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GRANAB SUBFLOOR SYSTEMS For environmentally friendly and quieter indoor environments with comfortable flooring in homes, offices, schools and public buildings.


Welcome to Granab AB GRANAB manufactures subfloor systems for homes, offices, schools and public buildings. The systems feature steel floor girders with dampening elements for effective impact and airborne sound insulation. Granab subfloor systems are patented and type-approved with respect to sound-dampening properties, dynamic loads and strength. About 4 million m2 have been installed in various projects. Granab's main office is in Vårgårda, Sweden with production facilities in both Vårgårda and Lindköping.

Bygg- och Miljöteknik Granab AB Phone: +46 (0) 322-66 76 50 Fax: +46 (0) 322-66 76 55 E-mail: epost@granab.se www.granab.se Mailing address: P.O.Box 172 SE-447 24 Vårgårda Sweden Street address: Verkstadsgatan 4 Vårgårda, Sweden

2


CONTENTS: Granab Subfloor Systems System 3000 System information, dimensions, design

System 7000 System information, dimensions, design

Planning instructions

Load capacity, c/c distances, girders

Testing, certification, approval Material properties

Materials, environmental impact, durability

4–5

6 7 8–9

10–11

12

Alternative floor coverings Chipboard & carpet, chipboard & parquet, parquet, tiles

13

Tiled surfaces, bathrooms

14

Bathroom modules

15

Planning Drawings, delivery optimisation and installation drawings

16–17

Comfort-adapted deflection

18–19

Impact and airborne sound insulation 20–21 Impact sound reduction in the lab

22–23

Sound insulation measurements Subfloor HD/F 270 mm, System 3000 Subfloor HD/F 185 mm, System 3000 Subfloor HD/F 270 mm, System 7000

24 25–26 27

Offices, public buildings Sound insulation, comfort-adapted floors Planning, electrical – datacom – telecom

Ventilated subflooring Moisture, mould, radon Floor heating Waterborne floor heating Recessed convectors

28 29

30–31

32 33

Addition of levels to existing structures, attic conversions, wooden subfloors

34

Installation tools, accessories

35

Material specifications Systems 3000 and 7000

36

Detailed solutions, installation High level, plastic film, door openings

37

Examples of projects

38–39 3


Granab subfloor systems provide many benefits: Granab subfloor systems are constructed with non-deformable floor girders of galvanised steel and an effective sound-dampening resilient system. The subfloor system is secured to the subflooring with screws and set at the desired height. Surface flooring of either parquet, chipboard and parquet, or carpet is laid over the subfloor system. The Granab system contributes to improving the quality and environmental friendliness of homes, schools and public buildings. Effective impact sound dampening and airborne sound insulation for alternative sound classes. Dry installation method. Installed directly on untreated subfloors without wet surface levelling. Provides floors with adapted comfort for better living and working environments. Creak-free floors. The Granab system is environmentally friendly and consists entirely of non-organic materials, and is not affected by variations in humidity or temperature. Structural height from 30 to 420 mm excluding flooring. Special heights up to 1000 mm. Flexible line routing in space between the surface flooring and subfloor. Load capacity/m2 distributed load, 4000 kg. Ventilation systems for ventilated subfloors. Designed for various floor heating systems.

System 3000

The system facilitates future modifications or renovations. Comfortable, environmentally friendly floors. Low weight. Granab system weight, 5 kg/m2. Compared to conventional topping solutions, 100 – 200 kg/m2

4

System 7000


Granab Subfloor Systems More than 4,000,000 m2 of Granab's patented and type-approved subfloor systems have been installed in homes, offices, schools, shops and public buildings. Granab systems are type-approved, and tested and certified by the SP Technical Research Institute of Sweden with respect to sound-dampening properties, dynamic loads, durability and comfort properties. Granab systems are tested annually in various projects with respect to sound insulation and deflection properties, and an extensive technology bank with test documentation is available our customers.

Shape permanence Granab systems are designed with non-deformable galvanised steel girders. They retain their shape and are not affected by humidity or temperature variations. Other composite parts in the systems are also made of non-organic materials that do not absorb moisture. Granab systems – with guaranteed shape permanence – eliminate. for example, the risk of creaking or sag due to the effects of drying and moisture on girders, which is the case with girders made of organic materials such as wood.

Sound insulation Granab systems provide very effective impact and airborne sound insulation. Granab systems have been tested and type-proved for their sound-insulation properties by the SP Technical Research Institute of Sweden. Granab systems have also been tested in a large number of completed residential projects with respect to impact and airborne sound insulation for sound class B, as well as sound class A in certain projects.

Comfort In a good living and working environment, it is important that floors are not hard or entirely rigid, which can cause pain in the back and legs. Granab systems, with their integrated impact-dampening effect, provide comfortable floors with documented deflection properties for point loads.

Installation An installed floor's quality is dependent both on the choice of floor covering, and that the Granab system and the flooring covering are correctly installed. Granab has detailed installation instructions for the Granab systems in a separate pamphlet along with checklists for installation. Installation of flooring over a Granab system must be carried out in accordance with the flooring manufacturers' instructions. Laminated wooden floors must always be laid under controlled forms in compliance with the range of temperatures and relative humidity percentages stipulated by the respective manufacturers and suppliers of the flooring material.

Subfloors Hollow core slabs: Granab systems are commonly installed on hollow core slabs when the objective is to attain sound class A or B without additional topping (for more information, see pages 20–27). In situ cast subfloors: With Granab systems, subflooring can be cast thinner. A cast subflooring of approximately 300 mm can be reduced to approximately 200 mm, when structural factors permit, with retained or improved sound insulation. This produces a lighter overall construction and improved overall economy. Flexible line routing in the space between the subfloor and floor covering also facilitates future renovations. Wooden subfloors: Granab systems are installed directly on wooden subfloors so as to achieve improved impact and airborne sound insulation for the overall construction. Granab systems are, for example, widely used in attic conversions.

Planning and installation drawings Granab prepares plans and installation drawings for each room or building unit with detailed dimensions and locations of all included girders. See the examples on pages 14 – 15. The girders are cut according to the installation plans and all included adjustment units, including dampening elements, are pre-fitted at the factory. This ensures that all girders receive the right support without deviations.

5


Granab Subfloor System 3000 for adjustable heights 30 – 180 mm, excl. floor covering

26,5 17

45

17

79

MIn. height 30 mm

Max. height 180 mm

Section with support block and dampening element, level adjustment screw and concrete anchor

Construction heights: Flexible construction heights from 30 to 180 mm, excl. floor covering

22-mm parquet, alternatively 22-mm chipboard & 15-mm parquet or carpet

With supplementary sheet between the girders

20

600

600

General installation drawing, Subfloor System 3000 – Residential

400

600

600

600

600

600

600

400

NB: The c/c distance between girders is determined by the choice of floor covering. For other premises, see the c/c distance between floor girders on page 8.

6


Granab Subfloor System 7000 for adjustable heights 70 – 420 mm, excl. floor covering Special heights up to 1000 mm (see page 37)

40

Adjustment height 70–420 mm

45

Construction heights: Flexible construction heights from 70 to 420 mm, excl. floor covering. Special heights up to 1000 mm with masonite beams on girders (see page 37).

Section with support block and dampening element, level adjustment screw and concrete anchor

22-mm parquet, alternatively 22-mm chipboard & 15-mm parquet or carpet

20

600

600

General installation drawing, Subfloor System 7000 – Residential

400

600

600

600

600

600

600

400

20

NB: The c/c distance between girders is determined by the choice of floor covering. For other premises, see the c/c distance between floor girders on page 8.

7


Planning instructions for for various load conditions, Granab Subfloor Systems 3000 and 7000 Recommended c/c distances between floor girders (sections) and support blocks, Systems 3000/7000: 1. Rooms in dwellings, hotels, hospital rooms and staff rooms, c/c distance, girders (sections), 600 mm. 2. Assembly rooms such as classrooms, rooms in childcare centres, lecture halls, office rooms, premises for restaurants, cafes and dining halls, c/c distance, girders (sections), 400 mm. 3. Open areas in libraries, spaces with fixed seating such as in churches, theatres and cinemas, c/c distance, girders (sections), 400 mm. 4. Spaces without fixed seating in churches, concert halls, theatres, cinemas, museums, exhibition halls, retail areas in department stores and shops, gyms, sports centres, dancehalls, corridors in schools, etc., c/c distance girders (sections), 300 mm.

Load capacity For girder spacing for homes, c/c distance 600 mm = 4 tons/m2 The point load capacity and distributed load of various floor coverings installed on Granab systems are calculated according to the specifications of the respective flooring manufacturers.

System 3000 1st – 2nd girders, 400 mm

c/c distance between floor girders (sections), 600 mm

c/c distance between support blocks, 600 mm

Distance from wall, approx. 40 mm

System 7000 1st – 2nd girders, 400 mm Distance from wall, approx. 20 mm

8

c/c distance between floor girders (sections), 600 mm

c/c distance between support blocks, 600 mm


Planning instructions for various load conditions, Granab Subfloor Systems 3000 and 7000 The unique design of the Granab systems – with components of non-organic materials, steel girders, dampening elements and adjustment screws in various lengths – permits installation in many different types of projects and entails considerable benefits. The dampening element, which provides progressive resilience, makes the system an excellent choice for floors in sports centres and other multi-purpose areas, for example. The specified load capacity, 4 tons/m2 at c/c 600, can be significantly improved with tighter c/c spacing of both girders and adjustment units.

9


Granab Subfloor Systems typeapproved by the SP Technical Research Institute of Sweden Granab Subfloor Systems 3000 and 7000 have been tested and certified by the SP Technical Research Institute of Sweden with respect to load capacity, stability and durability with verified values for sound-dampening characteristics. Granab systems fulfil the requirements of paragraph 2 in the Swedish act (1994:87) on technical properties of constructions for intended usage – BVL. Certificate and type-approval number 19 21 01, 15 April 2008

Evaluation documentation Report 97B1, 9804 | Report P302700 | Report P302700A | Report P302700B | Report P302700C Report P302700D | Report P300682 | Report P300682A on dampening pads | IFP Research, 040317 Report, Assessment of flooring system IFP Research, 040206 | Report P302635 | Report P705473 Statement P705473A 10


Tested and certified by the SP Technical Research Institute of Sweden 2. Load testing, a separate support block/level adjustment screw

1. Deflection properties

10

12

See information on pages 18 – 19 Load testing of the support block was conducted by placing the support block with an adjustment screw between two steel sheets and applying a load using a hydraulic press. Force and deformation were registered. During testing, only 10 mm of the adjustment screw was threaded into the support block.

3. Deflection testing, section with spliced sheet (without dampening pad)

10

The deflection test was conducted by placing a steel rail in a hydraulic presswith two support blocks fitted at a c/cdistance of 600 mm. A point load was thereafter applied on the steel rail between the support blocks. Force and deformation were registered.

4. Fatigue testing of installed Granab floor construction

12

Fatigue testing was conducted over a support block by applying a pulsating load of between 0.1 Fk and 0.6 Fk 10,000 times at a frequency of 1 Hz. Fk was the characteristic value from support block load testing. A total of two fatigue tests were conducted over the support blocks at the outer corners of the test floor. The load was pulsated between 0.1 and 0.6 Fk with Fk set at 8.5 kN. Both load tests were conducted without any lasting deformations or damages.

11


Granab Subfloor Systems, materials, environmental impact, durability, specific product properties Granab subfloor systems Granab Subfloor Systems are designed for easy removal when necessary and for subsequent reinstallation as complete units.

Floor girders

Dampening elements

Material:

Galvanised steel, alternatively, untreated steel, thickness 1.5 mm

Environment:

Thin steel plate is a part of the ecosystem and processed into new steel in electro-steel works.

Functional dura-bility:

Galvanised steel has extremely long durability.

Material:

Elastomer, GRAB-310

Environment: No environmental impact, recyclable into new polyurethane products Resilience durability:

Total deflection (momentary + long-term creep) at 106 h (114 years)

GRAB-310

Relative thickness

For 12-mm thickness

≤ 17 % ≤ 18 %

≤ 2 mm ≤ 2.2 mm

P V

Functional durability:

Dynamic E-module Change ≈ 0 % ≈ 0 %

GRAB-310´s resistance to short-term extreme overloads is very high and the material springs back entirely if overloaded. The long-term creep has no effect on the material's dynamic E-modules. Elastomer has extremely long durability. Not affected by ozone, UV radiation or by commonly occurring chemicals.

Support blocks with adjustment screws Materials: Environment:

Functional dura-bility:

Polypropylene, Granab standard, according to DIN 53444 No environmental impact. Recyclable into new basic material. Very long according to the diagram

% 20 15 10 5 2 0 10°

2 N/mm2 101

102

103

104

105

106

h

(114 years)

12


Examples of alternative floor coverings Follow the instructions for installation and laying from the respective chipboard and parquet manufacturers. 22-mm chipboard & 15-mm parquet

NB: Use flooring paper as an interlayer between the chipboard and parquet.

22-mm chipboard & carpet

Gluing/screwing chipboard NB: Casco Superset no. 3879 or equivalent

22-mm parquet, floating or glued to the girders

Floating

Gluing, parquet

NB: Use intermediate strips of flooring paper.

NB: Casco Superset no. 3879 or equivalent

WC/Bathroom

Entrance/Hall

Tiles

13


Tiled surfaces Granab systems are installed as subfloor systems for tiled areas in halls and wet rooms in various construction projects. Granab systems – which consist entirely of non-organic materials – are not sensitive to moisture and at the same time, provide effective impact and airborne sound insulation. The girders are installed with c/c spacing of 300 mm.

Example, remodelling: Granab subfloor system, c/c 300 mm, with 22-mm chipboard, sheet of non-organic material, moisture barrier, tiles.

Bathrooms C B A

A: Chipboard flooring, 22 mm

B: Sheet of non-organic material

General drawing for tiled area

14 C

C

B

A

C: Floor levelling compound


Testing of Granab subfloor systems with tiled surfaces

Granab subfloor systems with tiling have been tested by the SP Technical Research Institute of Sweden with respect to deflection and strength properties.

Bathroom modules Complete bathroom modules Prefab bathrooms are becoming increasingly common in residential construction in Sweden. They have been widely used by our Scandinavian neighbours for several years. A Granab system combined with a prefab bathroom, entails a complete solution with many benefits, including effective sound insulation. The level difference between the subfloor and module is adjusted with the Granab system.

15


Planning, logistics efficiency Delivery optimisation Granab systems are packed and delivered with pre-cut and dimension-adapted floor girders and factory-fitted support blocks and dampening elements. Each girder is labelled with a room name and length that matches the information on the installation drawing for each flat or other agreed-upon space subdivision. Granab systems are packaged in bundles on EUR pallets with a maximum length of either 2600 mm or 3800 mm.

BALKONG CA 6,5 m2

2600 2600

1360

670

380

760

1520

1620

820

2360

300 830

1460

1360

300

360

2600

1080

2600

1080

2210 2600

310

500

2040

500 320

2600 2600

SOVRUM 3 2210 CA 11,5 m2 2210

1080

2600

2600

SOVRUM 2 CA2600 8,5 m2

2520

2210

1080

2600 2370

500

440

1360

2600

300

2450 1570

1100

1240

1620

2600

300

500

300

2460

450

2690

1520

2600

KÖK/V-RUM CA 30 1080 2600 m2 2600 (V-RUM CA 20 m2) 1080

2600

2460

2600 1630

1520

2600

730

2600

950 2530

2090

300

300

250

2000

1520

1470

1500

1500

650

850

1700 990

300

2360

300 530

300

2360

SOVRUM 1 CA2360 12,5 m2

300

500

2360

2360

300

2360 1970

HALL 2000

850

300

2600 850

2820

SOVRUM 2360 1 CA 11,5 2360 m2

300 1460

300

2360

1110

2450 2360

2600

2600

2600

510

1110

300

2600

1110

2600

300

2360

2600

1110

2600

2360 850 2600

1110

300

1520

2600

2600

2450

2600

BALKONG CA 6,5 m2

1110

300

2480

2600

2600

850

2600

500

1520

2600

2600 2600

1470

300

1110

2600

HALL1510

2380 2600

1110

2600

2600

1520

2600

2600

750

850 1460

1510

2600

WC/DUSCH CA 5,5 m2

KLK 1220 WC CA CA 2,5 m21310 E 1,5 m2

2820

1110

2390 2600

450

2600

340

1110

580

850 1550 1550

850 300

1230

2600

2600

1520

2600

2000

2450

WC/DUSCH CA 5,5 m2

1220

FRD 1430

2600

1460

2600

1520

2600

760

1310

8 520 30

2 m2 E CA 1520

1410

2450

WC/DUSCH CA 5,5 m2

1370

2600

KÖK/V-RUM CA 33 2600 m2 (V-RUM2600CA 23 m2)

2600

2380

640

2600 310

2600

500 360

2600 1320

1360

850

2430

950

1370

380

1370

2600

1070

2600

2600

1560

2600

1070

2600

2600

2430

1070

370

740

500 300

1320

1320 2600

1320 1320 950

2390

1070

2600 2600

2600

2340

850

KLK CA 23403,5 E m2 2340

520

m2

2580 850

HALL 2600

1550

2600

2600

300 850 2600

1460 850 KLK 1530

1070

KÖK/V-RUM CA 30 1070 m2 2600 (V-RUM CA 20 m2)

1070

640

1500

300

300

2450

2600 2600

1,5 E CA 1430

2120 310 1120

HALL

WC/DUSCH CA 5,5 m2

2360

340

960 1070

2600

2030

1370

2600

500

300

2350 2600

1620

2600

2600

1590

2460

2600

1200

500

2480

300

1460

1460

2280

2480

300

1370

2600

500 330

300

300

990

2010

2600

300

2360

2600

500

310 1370

2480

2360

2600 2290

2450 2600

2480

SOVRUM 1 2480 CA 11 m2 2480

300

2600

380

1370

300

1880

500

300

1500

1370

2600

2360 SOVRUM 2 CA 12,5 m22360

850 1740

850

570

300

2460

950

490

650

2600

300

2360

2460

2600

1320

1580

2600

530

2360

1810

1090

300

1810

2600

2250 2600

1090

1770

500

2600

2600 1320

2350

1520 1980

500

1090

2600

720

2250

2350 2600

300

2460 SOVRUM 1 CA 12,5 m2 2460

2250

1090

300

2600

2600

850 2600

1090 720

500 1600

2600

1090

330

2460

0

2600

KÖK/V-RUM CA 33 2600 m2 2600 CA 23 m2) (V-RUM

2250

SOVRUM 2 CA 2250 9 m2

500

2460

49

1090

2250

400

2250

2250

2260

2600

2160

BALKONG CA 6,5 m2

1090

1540

1090

2600

720

2600 2600

340

950

1080 500 300

960

2210 1930

BET

ANT

ÄNDRINGEN AVSER

SIGN

DATUM

KV.UGGLAN VEIDEKKE SVERIGE

BALKONG CA 6,5 m2

GRANAB AB BOX 172 447 24 VARGARDA UPPDRAG NR

RITAD AV

HANDLÄGGARE

Claes-Goran Andreasson

DATUM

ANSVARIG

SKALA

NUMMER

071116 GRANAB S-7000 PLAN 2-5 HUS 1 GR 1:75 1:50(A1)

Packaged and labelled for each flat 16

BET


Planning, logistics efficiency Interior walls for finished Granab subfloors Walls for flats or other subdivisions are first erected from floor to ceiling. It is advisable to erect interior walls within a flat or subdivision on finished Granab subflooring, including the chipboard. Erection of interior walls in this manner permits the chipboard to be installed quicker and entails less waste in that one is working with larger, continuous floor surfaces. Material consumption for the interior walls is lower and installation of both the Granab floor and interior walls goes significantly faster.

10x21M 10x21M

2600

2600

2600

2600 SOV2 6.6 m²

1

1

2600

2600

2600

2600

2600

2600

2600

2600

1910

2600

2600

2600

2600

2600

2600

2600

1910

2600

2600

2600

2600

2600

2600

2600

2600

1910

2600 2600

2600

2600

2600

1960

2600

1960

2600

2600

1960

2600

1960

8x21M

BOD 4.5 m²270

2600

STUE/KJØKKEN 28.4 2600 m²

8x21M

2600

1960

1950

2600

1950

2600

2600

2600

2600

SOV1 6.9 m²

9

2600

2600

2600

1

1950

10x21M

80

20

18

TERRASSE

920

2600 2600

2120

2420

0 53

32

2600

1880

2570

00 26

300

300

300 300

2600

380

2530 2460

300

2460

300

2460

300

TERRASSE 9.9 m²

300

BAD/VASK/OMKL. 7.4 2410 m²

300

10x21M

300

2410

300

2410

300 300 300

2

2600

300

600

2600

950 80

2600

SOV1 11.8 m²

2

2420 2420

2520

2510

2560

2440

410

24102520 2410

800

28x21M

6

2380

300

560 660

300

41

0

2380

2500

2520 1810

950

2600

950

2270 0

300

430

1400

2600

4

2600

2140

1 350

2600

2600

2600

2600

2600

2600

2600

2600

2600

1

1960

1960

2600

2

1480

10x21M

2600 2410

300

2

2600

1740

2600

1740

2600

1740

2330

1

2600

2600

2600

2600

SOV2 10.4 1740 m²

2600

2600

1740

2600

2600

1740

2600

2600

1810

1960

SOV2 6.6 1960 m²

8x21M

2460

2600

9

1960

5

2600

STUE/KJØKKEN 37.8 m²

1960

2600

1950

2600

2600

1950

2600

2600

2600

2600

BET

ANT

ÄNDRINGEN AVSER

SIGN

DATUM

KV.RONNVIKVEIEN

1950 2020

GVJ

9x21M

16

390

1970

9x21M

870

2600

2600

260010x21M 1480

10x21M

2600

1200

2410

11

2000

11

2410

1430

2560

1680

2600

10x21M 2600 BAD/VASK/OMKL. 2600 7.5 2600 m²

1

2600 2600

2600

2600

1960

2600

STUE/KJØKKEN 2600 39.5 m²

1480

1

2600 2410

300

143010x21M

1230

2600

300

2600

5

430 2600

2600

2600

2600

300

1430

1430

300

2600

8x21M

1

2600

430 2600

2600

2600

2600

6

2

300

300

1

2600

340

HALL 1480 4.7 m²

2600

2600

2400

2600

430

2500

2600

5

2600

2600

2600

2600

2600

2600

2600

2600

9

2600

1580

4 1190

2600

SOV2 6.6 2600 m²

2600

HALL 7.8 m²

2600 2400

10x21M

300

410

1410

2330

1

2140

1430

2540

10x21M

2600

1430

2600

10x21M

WC

3.9 1680 560

2470

2600

940

1 2600 2600

1680

SKAP 2.6 2600 m²

940

2600 1880

1680

10x21M

2600

GANG 13.8 m²

10x21M

2600

940

1680 2400

2400

1010

2600

1430

HALL 7.8 m² 2600

1230

80 420

1

2600

2600

8

1500

EL-SKAP 0.6 m² 10x21M

1430

2600

2 1800 1680

2400

2600

1170

2600

2180

SKAP/BOD 3.2 m²

2600

11

300

2600

1430

12 2600

8 SKAP

2600 2.6

2600

2600

1100

1170

2600

20

300 300

2520

1100 2470

2600

10x21M

1320

GANG 10.3 m²

2600

10x21M

2600

300

2410 2410

1100

10x21M 1100

1720

300

2410

10x21M

1100

1910

2600

12

300

2410

2

430

1500

10x21M

300

1100

680

2

1910

1910 8x21M 2600

440

STUE/KJØKKEN 40.7 m²

2600

11

820

2600

2600

950 2310

300

10x21M

820

2600

800

10x21M 2600

4.1 m²

400

300

2410

4.1 m²

10x21M 1600

820

2600

HALL 1100

HALL 1100

820 820

2600

9

1

820 820 820

BAD/OMKL. 2600 8.6 2600m²

2330

2410

1100

2600 950

2310

300

300

300

2410

1170

2600

2 600

950

24102520

1100

2400

SKAP/BOD 3.2 m²

2600

BAD/VASK/OMKL. 2410 7.4 m²

12

2600

2

1170

690

2400

9

9

2600 2400

2600

870 2600

10x21M

2600

10x21M

300

300

2600

2460

2600

90

660

10x21M

GANG 10.3 m²

2600

2380

300 10x21M

2600

2

680

2440

520

270

6

2380

2460

SOV1 11.8 m²

560

300 300

820 820

10x21M 560

4

300

10

1720

2530 2460

2440

m² 1870 1280

300

1890

2500

WC

1870 3.9

0

380

300

TERRASSE

40

0

53

2600

2600

1870

11

800

820

2600 2600 0

1400

2600

2600

32

00

26

2600

28x21M

820

8.6 m²

2600 2600

820

2600BAD/OMKL.

2 2600

880

TRAPPEROM 21.1 m²

2600

940

1320

1870

2000

820

2600

11

1870 2600

820

1810

2600 2180 1870 2 1970

1900

1010 820

2310

1 2560

2

2600

2600

950

940

2600

2600

2600

10x21M

2600

430

2600

10x21M 2600

2600 2600

880

400

2600

1 940

2420

2600

2600

950

10x21M 1550

2600 STUE/KJØKKEN 40.7 m²

2560

2600

1910

SOV11910 6.9 m²

1

2600

2600 2600

2600 SOV3 8.4 m²

9 10

2600

1980

SOV3 1910 8.4 m²

1

1790

1910

2600

2600 8x21M 2600

2600

2600

2600 2600

SOV2 6.6 m²

1

12

2600

390

2600

2600

2260

2600 410

2600

2600

2600

2600

1

6.9 m²

2600

2600 SOV1

2560

2600 2600

300

1980

TERRASSE 11.3 m²

TERRASSE 9.5 m²

GRANAB AB BOX 172 447 24 VARGARDA UPPDRAG NR

RITAD AV

HANDLÄGGARE

Claes-Goran Andreasson

DATUM

ANSVARIG

SKALA

NUMMER

080214 GRANAB S-7000 PLAN 1-4 HUS C

1:50(A1)

GR 1:73

BET

Intra-transport in conjunction with framework construction Because Granab systems consist of non-organic materials and are not affected by moisture or temperature variations, they can be delivered while the framework is still under construction. Granab girders can be produced with a maximum length of 2600 mm – the same length as for a bundle of plasterboard. The plasterboard for the walls can be moved in along with the wall girders, which are placed on stands above the Granab girder packages. By lifting the materials into place during framework construction and erecting the interior walls above the Granab system, workflow is more efficient and costs for logistics are minimised.

Girders are pre-cut to the correct lengths according to the drawing for each room unit. 17


Pleasant, comfort-adapted floors with Granab systems for a better working and living environment In a good living and working environment, it is important that floors are not hard or entirely rigid, which can lead to pain in the shoulders, back and legs. Granab systems, with their integrated impact-dampening effect, provide comfortable floors with documented degree of deflection for point loads. Deflection during application of point loads on floors laid on a Granab system is dependent on – besides the subfloor construction and c/c distance between the girders – the choice of floor covering and how installation is performed. The respective flooring manufacturers provide information about deflection for each type of floor covering. Deflection of the finished floor construction with a point load of 1 kN should not exceed 2 – 3 mm according to the SP Technical Research Institute of Sweden.

Deflection properties Example from test measurements of deflection when a point load is applied

9

Kraft (kN)

8 7 6 5 4 3 2 1 0 0

0,5

1

3 1,5 2 2,5 Deformation (mm)

3,5

4

Lab tests of deflection for various point loads 18

4,5

Testing and certification are conducted by the SP Technical Research Institute of Sweden. Contact Granab about full type-approval no. 192101. Granab systems with 22-mm chipboard and both 15mm or 22-mm parquet have been tested in a number of residential projects by the SP Technical Research Institute of Sweden with respect to deflection of the completed floors. The results show an average deflection within 2 mm of other measurement points in each flat with a point load of 1 kN. Documentation from measurements conducted by the SP Technical Research Institute of Sweden with alternative floor coverings from a large number of field measurements in completed residential projects can be provided by Granab upon request, as well as figures from lab measurements conducted by the SP Technical Research Institute of Sweden and measurements from a large number of assembled test floors in Granab's testing facility with alternative floor coverings. All measurement results are within the margins for recommended values.


Testing methodology for deflection of completed floors Non-deformable Because Granab systems are non-deformable and constructed entirely of non-organic materials, there will be no problems with sagging or creaking that can occur in conjunction with drying or creep of floor joists made of wood, for example, or other organic materials.

Floor coverings The choice of floor covering is an important factor for the final comfort of a completed floor. Point-load deflection for Granab systems is in compliance with the applicable standards and recommendations. For the entire finished floor construction (including the floor covering) to attain the expected comfort – besides the choice of floor covering laid over the Granab system – it is important that the both the Granab system and floor covering are installed by trained installers and floor-layers, and that the installation instructions and checklists are carefully followed.

Testing methodology for deflection of completed floors The SP Technical Research Institute of Sweden has developed a measurement method and device with digital deformation sensors for reliably and easily measuring deflection of completed floors. Please contact Granab for information about the measurement device and instructions for use.

Information to residents Granab systems provide pleasant and comfort-adapted floors for improved living and working environments. Floor constructions with parquet or other floor coverings on girders entail less elastic deflection in the floor layer when point loads are applied. In certain cases, residents who are accustomed to entirely rigid flooring on concrete subfloors may have questions about the floor construction and the new floors. Granab can provide separate information sheets for answering these questions.

19


Impact and airborne sound insulation Impact and airborne sound insulation in homes and offices Granab systems provide effective impact and airborne sound insulation. Effective insulation against sound from surrounding spaces is important for a good living and working environment. Investigations show that in older structures, residents are often disturbed by impact sounds, loud music, slamming doors and staircase traffic, as well as noise from running water, lifts, ventilation and traffic. A good sound environment has become a prioritised requirement when building new homes, and there are also more stringent requirements for quieter working environments in offices and schools.

Sound classification standards stipulate acoustic requirements for homes and other premises The Swedish Board of Building, Planning and Housing (BBR) has established a generally formulated requirement for acoustic environments, calling for buildings being designed so that residents and other occupants are effectively protected against noise. In a general recommendation, BBR mentions sound class C in the SIS standards SS 25267 (dwellings) and SS 25268 (other premises), where detailed requirements and verification methods are described. The recommendation also states that “if better sound conditions are preferred, sound class A or B can be selected.” In practice, dwellings are usually planned for sound class B to fulfil customers' wishes. The standards place special requirements on sound insulation for low frequencies, due to these frequencies having been found to be especially important for the subjectively perceived sound environment. Appendix B in SS 25267 provides guidance on how floor constructions can be chosen so that impact sound requirements are fulfilled, and how one can calculate which sound class will be achieved with a certain combination of subflooring and floor construction. In buildings with Granab's sound-dampening subfloor systems, significantly improved sound insulation of subflooring is achieved (even at low frequencies) in comparison with conventional, thin floor coverings. Installations run freely under a Granab floor do not produce structure-borne sound because they are not attached to the framework.

Documentation of Granab systems' sound-insulating properties Granab systems have been developed in close collaboration with researchers and acoustic consultants in the building industry to satisfy highly placed demands on impact and airborne sound insulation in homes, offices and schools. Granab systems function as supplementary insulation for building frameworks both in new construction and remodelling projects. The impact and sound insulating function of the systems has been carefully documented in accordance with the requirements of SS 25267 through, for example, lab measurements and a large number of field measurements in completed buildings. In this way, values for sound dampening could be established, permitting sound insulation in buildings to be verified with calculations as specified in SS 25267. Calculation of sound insulation in completed buildings shall be conducted according to the Swedish and European standard SS-EN 12354, Parts 1 and 2 with input data from Granab. Input data for concrete subfloors is in the BASTIAN database, as well as at www.byggamedprefaf.se and www.betongbanken.com. For lightweight subfloors, such as wooden subfloors, contact Granab. A number of examples of acoustic measurements in the SP Technical Research Institute of Sweden's impact-sound lab, as well as vertically between flats with Granab subfloor systems installed on hollow-core slabs HD/F 120/19 and HD/F 120/27 in buildings, are presented on pages 22–27.

SS 25267

Applicable sound class limits for dwellings Sound class according to SS 25267

*

Highest permitted impact sound level* L´n,w+ CI,50-2500

Lowest permitted airborne sound level* R´w+ C50-3150

A

48 dB

61 dB

B

52 dB

57 dB

C

56 dB

53 dB

Verification with calculations. When performing verification measurements, the requirement shall be fulfilled in average values, although deviations of no more than 2 dB are permitted in isolated cases as long as the average value is attained.

Accredited sound measurements in completed building with a Granab system on hollow-core slabs HD/F 185 mm and HD/F 270 mm Examples of measurement results

Impact sound L´n,w+ Ci,50-2500

Airborne Remarks sound R´w + C50-3150

Granab system, height 65 mm incl. floor covering laid on HD/F 270 mm

51 dB dB 46

65 dB

Granab system, height 70 mm incl. floor covering laid on HD/F 185 mm

51 dB

58 dB

Granab system, height 150 mm incl. floor covering laid on HD/F 185 mm

47 dB

61 dB

Granab system, height 165 mm incl. floor covering laid on HD/F 270 mm

50 dB

59 dB

System 3000 Also see measurement results for alternative configurations of Granab systems on pages 24 – 26.

System 7000 page 27

Presented field measurements with alternative configurations of Granab systems show impact and airborne sound values that comply with sound class B and in certain configurations, sound class A.

• The impact sound value shall be as low as possible. • The airborne sound value shall be as high as possible. 20


Sound class description, dwellings, according to SS 25267

Sound class A:

The sound class corresponds to very good acoustic conditions.

Sound class B:

The sound class corresponds to significantly better acoustic conditions than sound class C. This sound class should be applied when a good living environment is requested.

Sound class C:

The sound class provides satisfactory acoustic conditions for a majority of residents and can be applied as a minimum requirement according to the Swedish Board of Building, Planning and Housing's directives.

Remarks:

The function requirements in this standard are adapted to the respective sound classes on the basis of extensive practical experience of subjectively perceived acoustic environments in dwellings. It should be noted, however, that building constructions – for both practical and financial reasons – cannot be designed to entirely avoid audible sound from adjoining spaces from all types of activities. Audible sound can occur, for example, from jumping or substantial impact on a floor. even occur in buildings that fulfil the higher sound classes

Percussive sound:

Percussive sound is addressed in SS 25268 (version 2 2007) and referred to there as ”impact sound in same room”. The requirement stipulates that percussive sound shall be limited in spaces in which several persons are present more than temporarily, such as in large office spaces, nursery schools, etc. Guidelines for measurement and assessment of percussive sound are included in the SIS technical report 2007:15 (www.sis.se). The degree of percussive sound is dependent on the floor covering used. Contact Granab for more information prior to planning.

Conditions

Granab subfloor systems, including floor coverings, can be configured for various sound classes (A – C according to BBR and SS 25267/SS 25268).

Granab subfloor systems are constructed with non-deformable steel girders and an effective resilient suspension system. The subfloor systems are secured to stable subfloors with screws and set at the desired height. Floor coverings of the parquet or chipboard of your choice can be glued, screwed or laid floating. Hollow-core elements and solid subfloors do not require the application of levelling compounds when they are complemented with a Granab subfloor system, which means shorter construction times, reduced building humidity and increased flexibility. For a planned sound class between rooms in buildings with Granab subfloor systems to be attained both vertically and horizontally, it is important: • That the floor and wall constructions provide the correct conditions for attaining the correct sound class, which can be verified by calculating the sound insulation in unfinished floors and walls according to SS-EN 12354 or by measuring the sound insulation during the production phase according to the methods in SS 25267. Measurements are made before the underfloor system is installed with temporary actions taken during measurement to prevent Definition, airborne airborne sound leakage between measurement spaces. sound insulation: • That Granab subfloor systems are installed by trained installers and and in accordThe separating construction's capability to reduce ance with Granab's installation instructions and installation checklists. sounds that reach the • That Granab systems and the floor coverings can move freely and do not have rigid construction via the air. contact points against the building framework, for example, at attachments and leadthroughs. Definition, impact • That sound leakage through joints and installations in floors and walls is prevented. sound level: The sound pressure level • That flank transmission via attached constructions – exterior walls, subceilings, etc. – in a demarcated space is prevented. from a standardised impact sound device that • That sound transmission via ventilation ducts between flats does not occur. hammers on a floor. • For more information, see Granab's general delivery and sales terms. To ensure that planned sound classes are attained both vertically (between floors) and horizontally (on the same floor) in completed buildings, all components of the building construction must function in the correct manner. An acoustic consultant should be engaged to review planned building constructions (construction documents). During the construction phase, installation should be checked according to our checklists. 21


Impact sound reduction in the lab Granab subfloor systems have been tested by the SP Technical Research Institute of Sweden on a reference subfloor of 16-cm concrete according to the Swedish and international standard SS-EN ISO 140. The impact sound tests were conducted with15-mm parquet flooring on flooring paper, Granab's subflooring of 22-mm chipboard flooring that was glued and screwed to the 7000 system's steel sections, green Sylodyn速 dampening pads and spacer screws in the concrete subfloor. The dampening pads are built in under the steel sections and permit movements in the floor without impact sound being transmitted via the screws to the concrete subfloor. By comparing measured impact sound levels for completed floors with the levels attained for the lab's concrete subfloor alone, the SP Technical Research Institute of Sweden can present improvement values for the Granab system ( ) that were calculated in the one-third octave band according to ISO 140-8.

System 3000

System 7000

The improvement values from the lab can be used for calculating impact sound levels in buildings with other types of concrete subfloors in accordance with SS-EN 12354-2. Values for Granab systems and various concrete subfloors are in the database for the calculation programme BASTIAN. When calculating impact and airborne sound insulation in subfloors between rooms, the programme takes consideration to the effects of areas and room volumes, as well as adjoining structural elements, which enables both simple and cost-effective engineering of a building's sound insulation. The calculation results have been compared with a large number of values from field measurements and have been shown to agree well in regard to average values. Granab recommends maintaining a 1-dB margin when engineering against acoustic requirements in completed buildings in accordance with SS 25267/-68. 22


Impact sound reduction in the lab To facilitate comparisons of various floor solutions for dampening impact sound, there is a classification system in Appendix B of the Swedish standard for sound classification of dwellings (SS 25267). The impact sound classification is based on the weighed summation value w that the SP Technical Research Institute of Sweden calculates form 16 values in the one-third octave band (100 – 3150 Hz) according to SS-EN ISO 717-2. Buildings with concrete floors and coverings in impact class 7 normally fulfil BBR's requirements (sound class C). Granab systems produce 29 dB, which fulfils the highest impact sound class 8A. Floors in this class normally fulfil impact sound requirements for sound class A in buildings with concrete floors.

Guidance in the choice of floor coverings and upper flooring on thin concrete subfloors according to SS 25267 Appendix B, (<180 mm) In Appendix B of SS 25267, classification is conducted of floor coverings' impact sound dampening on thin concrete subfloors. The classification is made in seven different floor covering classes with descriptions of impact sound dampening for the respective floor covering classes. The highest floor covering class is class 8A, which the Granab systems fulfil by a wide margin. Wooden floors and carpet on a thin elastic mat normally fulfil impact sound class 7, which results in sound class C on the same floor. Floor covering class Criterion dB Significance/Application. Floor coverings that belong to the group 8A 25-28 can fulfil sound class A between dwellings when they are laid on concrete subfloors. For a full description, please refer to the standard SS 25267 (SIS proposal), www.sis.se

with Granab subfloor systems

29dB

23


Impact and airborne sound reduction, vertical, System 3000 Sound insulation measurements Granab subfloor system installed on HD/F 270 mm. Accredited sound insulation measurements according to: SS 02 52 54 - SS-ISO 717/1 and SS-ISO 717/2 conducted by Ingemansson Technology AB. Configuration Granab subfloor system installed on HD/F 270 mm and 22-mm chipboard & carpet

65 270

Measurement results Impact sound: Lnw+c 46 dB

Configuration Granab subfloor system installed on HD/F 270 mm and 22-mm chipboard & 15-mm parquet

65 270

Measurement results Impact sound: Lnw+c 43 dB

System 3000, airborne sound Referenskurva 0-mätning. B1-A1 Vertikalt System 3000 B1-A1 Vertikalt

Referenskurva 0-mätning. B1-A1 Vertikalt System 3000 B1-A1 Vertikalt

L´n,w+c = 84 dB L´n,w(8) = 84 dB L´n,w(8) = 46 dB L´n,w+c = 46 dB

Stegljudsnivå L10 dB 100

90

90

80

80

70

70

60

60

50

50

40

40

30

30

20

20

10

10

0

0

*2 63 125 250 500 1000 2000 4000 8000 80 160 315 630 1250 2500 5000 10000 50 100 200 400 800 1600 3150 6300

Airborne sound: Rw+c 65 dB

System 3000, impact sound

R´w+c = 58 dB R´w(8) = 59 dB R´w(8) = 67 dB R´w+c = 65 dB

Reduktionstal R´dB 100

24

Airborne sound: Rw+c 65 dB

*2 *2 63 125 250 500 1000 2000 4000 8000 80 160 315 630 1250 2500 5000 10000 50 100 200 400 800 1600 3150 6300


Impact and airborne sound reduction, vertical, System 3000 Sound insulation measurements Granab subfloor system installed on HD/F 185 mm Accredited sound insulation measurements according to SS-EN ISO 140-4-7 conducted by KM Akustikbyrån.

Configuration Granab subfloor system installed on HD/F 185 mm and 22-mm chipboard & carpet

70 185

Measurement results Impact sound: Lnw+c 51 dB

Airborne sound: Rw+c 58 dB

Configuration Granab subfloor system installed on HD/F 185 mm and 22-mm chipboard & 15-mm parquet

70 185

Measurement results Impact sound: Lnw+c 48 dB

System 3000, airborne sound

System 3000, impact sound Referenskurva 0-mätning. Vertikalt L´n,w = 80 dB L´n,w+c = 67 dB System3000 Vertikalt L´n,w = 49 dB L´n,w+c = 51 dB

Referenskurva 0-mätning. Vertikalt R´w = 57 dB R´w+c = 55 dB System 3000Vertikalt R´w = 62 dB R´w+c = 58 dB Reduktionstal R´dB

Airborne sound: Rw+c 59 dB

Stegljudsnivå L10 dB

90

90

80

80

70

70

60

60

50

50

40

40

30

30

20

20

10

10

0

0

63 125 250 500 1000 2000 80 160 315 630 1250 2500 50 100 200 400 800 1600 3150

63 125 250 500 1000 2000 80 160 315 630 1250 2500 50 100 200 400 800 1600 3150

25


Impact and airborne sound reduction, vertical, System 3000 Sound insulation measurements Granab subfloor system installed on HD/F 185 mm Accredited sound insulation measurements according to SS-EN ISO 717/1, 717/2 conducted by J&W Akustikbyr책n. Configuration Granab subfloor system installed on HD/F 185 mm with 22-mm chipboard above.

150

Measurement results Impact sound: Lnw+c 47 dB

185

Configuration Granab subfloor system installed on HD/F 185 mm and 22-mm chipboard, and 15-mm parquet above.

150

Measurement results Impact sound: Lnw+c 46 dB

185

System 3000, airborne sound

64

26

Airborne sound: Rw+c 61 dB

61

Airborne sound: Rw+c 63 dB

System 3000, impact sound


Impact and airborne sound reduction, vertical, System 7000 Sound insulation measurements Granab subfloor system installed on HD/F 270 mm Accredited sound insulation measurements according to SS-EN ISO 140-4-7 conducted by KM Akustikbyrån.

Configuration Granab subfloor system installed on HD/F 270 mm and 22-mm chipboard & carpet

150

Measurement results Impact sound: Lnw+c 50 dB

270

Airborne sound: Rw+c 59 dB

Configuration Granab subfloor system installed on HD/F 270 mm and 22-mm chipboard, and 15-mm parquet above.

150

Measurement results Impact sound: Lnw+c 48 dB

270

System 7000, airborne sound

System 7000, impact sound System 7000 Vertikalt L´n,w = 47 dB L´n,w+c = 50 dB

System 7000 Vertikalt Rw = 62 dB Rw+c = 59 dB Reduktionstal R'

Airborne sound: Rw+c 61 dB

Stegljudsnivå L'

90

90

80

80

70

70

60

60

50

50

40

40

30

30

20

20

10

10

0

0

63 125 250 500 1000 2000 4000 80 160 315 630 1250 2500 50 100 200 400 800 1600 3150

63 125 250 500 1000 2000 4000 80 160 315 630 1250 2500 50 100 200 400 800 1600 3150

27


Offices – Public buildings Impact and airborne sound insulation Granab subfloor system are installed in many office projects. Flexible line routing between subfloors and floor coverings entails major benefits while at the same time, the Granab system creates a good acoustic environment. Granab systems fulfil the acoustic requirements for offices in accordance with SS 25268 by a very wide margin.

Pleasant, comfort-adapted floors for a better working environment In a good working environment, it is important that floors are not hard or rigid, which can lead to pain in the shoulders, back and legs. Granab systems, with their integrated steel-dampening effect, provide comfortable floors with documented degree of deflection for point loads. Acoustic requirements, offices, according to SS 2 52 68 Airborne sound insulation, in accordance with SS 2 52 68 Lowest total airborne sound insulation between spaces Rw (dB) Type of space

Sound class B

Sound class C

Office room – along corridor Interview/conference room – along corridor

35 30 441) 352)

35 30 44 35

1)

For special requirements, 48 dB. 2) For rooms with glazed walls, 5 dB lower is acceptable.

Impact sound insulation, in accordance with SS 2 52 68 Highest impact sound level between different spaces, L´nw (dB) Type of space

Sound class B Sound class C

Office room, interview room Conference room, break room. – along corridor from other space

64 60

28

68 68

Configuration Granab Subfloor System 7000 incl. 22-mm chipboard & 15-mm parquet. Light weight wall erected continuously on Granab system incl. surface layer. Measurement results Impact sound: Lnw 59 dB Airborne sound: Rw 56 dB


Offices – Public buildings KONTOR

Example – Planning Electrical, datacom, telecom – Offices

GRANAB GOLVREGE LSYS SYSTEMBES KRIVNING EL

GRANAB AB

Uppdragsnumm er

System description – Electrical Granab subfloor systems permit distribution of supply systems for power, telecom, datacom, etc. Premises larger than 1000– 2000 m2 are divided into supply zones.

TEM

Datum

203939 2000-02-15

Rev. datum Uppr‰ttad av Granskad av

Jorkby, Ingema r

Godk‰nd av

Rullagergatan 6, 415 26

KM ELTEKN IK AB

Gˆteborg ∑ Tel: 031-727 www.km.s e

25 00 ∑ Fax: 031-727

25 01

Spaces – Central units The supply zone is equipped with a fixed unit (so-called island with toilettes, etc.) where central units for power, telecom, datacom, fire alarms, etc. are placed. Canalisation – Line routes The cable networks are run on cable trays or baskets under the floor along a primary route from the central units and on to the supply zone. The floor is equipped with access hatches over the route. From the primary route, the cables are run in installation conduits to the equipment locations (outlets). The system can be potential equalised.

Granab subfloor system installed in the Kv. Stallet project, Stockholm Remodelling into offices, library and other public premises

29


Granab ventilated subfloors If there is uncertainty and risk concerning humidity content or emissions form the bottom slab or subfloor construction, air gaps under the finished floor should be ventilated using mechanical ventilation in combination with the fitting of a moisture barrier under the floor girders. In its standard configuration, the height of the Granab system is adjustable from 30â&#x20AC;&#x201C;420 mm and provides an open airflow under the girders. The space under the floor constitutes a separate â&#x20AC;&#x153;room unitâ&#x20AC;? (sealed box) that is ventilated independently, or in special cases, in combination with other ventilation.

Order our ventilation pamphlet for more information.

System 3000 with moisture barrier above the girders

System 7000 with moisture barrier above the girders Granab can provide ventilation planning that even encompasses function, operation and maintenance instructions. Installation of ventilation is conducted by a local HVAC installer or building contractor.

30


Granab ventilated subfloors Granab ventilated subfloor principle Separate mechanical ventilation in â&#x20AC;&#x153;room unitâ&#x20AC;? under the floor using an exhaust fan that draws air out via perforated air ducts of, for example, standard spiral ducting. Inlet air to the ducts is obtained via a filter-equipped air terminal device that takes inlet air from the respective room units. Additional inlet air can be obtained with, for example, an additional outdoor air valve.

A large number of single-family dwellings and other buildings are subjected to moisture damage each year in basements, or elevated moisture content in basement slabs. Besides performing checks and taking possible measures involving new drainage and filling materials around the structure, the wooden joists or plastic floor covering installed or placed directly on the basement floor must be removed, followed by drying of the concrete floor. Do not build in moisture! Moisture from concrete floors in basements or bottom slabs must be removed through ventilation and not built into the floor construction. A Granab system with floor girders of galvanised steel and no organic materials is adjusted up from the concrete floor to the desired height and air in the space between the subfloor and surface flooring is constantly extracted using ventilation. Granab systems with sound-dampening elements provide comfortable floors with good acoustic properties.

Avoid moisture, mould and stale indoor air â&#x20AC;&#x201C; install a Granab system with underfloor ventilation.

31


Floor heating installed in Granab systems Floor heating is installed in Granab systems in increasing numbers of residential projects. Granab systems with steel floor girders is entirely non-deformable and not affected by temperature variations, which is a major advantage in avoiding subsequent floor construction problems. Installation of most available floor heating systems with Granab Subfloor Systems 3000 and 7000 provides significant benefits.

When choosing waterborne floor heating, two alternative primary systems are installed in Granab Subfloor Systems 3000 and 7000: Floor heating in 22-mm chipboard flooring with grooves

Grooved 22-mm chipboard flooring that is glued and screwed in place on the Granab girders. Floor heating plates are fitted in the grooves to distribute the heat from the tubes to the floor. The floor heating tubes are then pressed into the heat distribution plates. Floor covering 15-mm parquet is laid directly on the floor heating installation, possibly with an underlying moisture barrier. It is important that installation instructions from the flooring manufacturers are carefully followed.

For detailed information, order our floor heating pamphlet.

Floor heating in sealed floor heating units

Heating coils are installed in the floor heating units. The sealed unit/floor plate is fitted parallel to the subfloor system's girders and on the sealed unit brackets, which are mounted between the girders (System 7000). Standard spacing between joints, c/c 600. Floor covering 22-mm chipboard flooring & carpet or 15-mm parquet, alternatively, floor mortar & tiles

32


Floor heating installed in Granab systems Recessed convectors

On many residential projects, solutions with recessed convectors are preferred; for example, when there are glazed floor-to-ceiling facades and downdraughts are to be avoided, but an attractive solution is also desired without visible radiators. In these cases, installation of a Granab subfloor system is very beneficial in that the space between the subfloor and finished floor can be utilised.

Examples of projects with floor heating/recessed convectors

Project: Kv. Klabben, 6000 m2, Stockholm Client: Folkhem AB

Project: Sickla Udde, 5000 m2, Stockholm Client: NCC AB / Familjebost채der

33


Granab systems with floor additions Granab subfloor systems have been installed in a large number of projects where low weight, in combination with effective impact and airborne sound reduction, is prioritised. Granab systems entail: Low weight/m2. Approximately 5 kg/m2 in comparison to corresponding 10-cm conventional topping solutions: approximately 240 kg/m2.

Project: Client:

Gånglåten, 6000 m2, Göteborg PEAB AB / Bostads AB Poseidon, Göteborg

Granab systems in attic conversions for flats

Project:

Attic conversion, 500 m2, Stockholm

Granab systems on wooden subfloors Granab subfloor systems can naturally also be installed on wooden subfloors. For attachment, wood screws are used instead of concrete anchors. Contact Granab for more information.

34


Installation tools, Granab Subfloor Systems 3000 and 7000

Mandrel for recessing in predrilled holes

Screwing tool for adjusting floor girder heights For screwdrivers Short model: Cat. no. 8100 Long model: Cat. no. 8200

Drill bit for recessing adjustment screws in girders Cat. no. 8600

Mandrel for final fixation

Mandrel for installation of concrete anchors (1 of each included) Cat. no. 850 A Length 250 mm Cat. no. 850 B Length 500 mm Cat. no. 850 C Length 1000 mm

Screwing tool for manually adjusting floor girder heights Short model: Cat. no. 8300 Long model: Cat. no. 8400

Concrete drill bit for concrete anchors. Cat. no. 8700, 250 mm, short Cat. no. 8800, 460 mm, long

Installation pipe for concrete anchors Cat. no. 8900

For detailed information, order our installation instructions and DVD.

Accessories Girder spacers

Cat. no. 9300 9400 9500 9600

Tool Girder spacing 300 mm Girder spacing 400 mm Girder spacing 500 mm Girder spacing 600 mm

Automatic screwdriver

Chipboard flooring screws Insulation bracket, system 7000 Fรถr isoleringstjocklek A 20

Automatic screwdriver type HILTI, 4000 rpm unit. For chipboard flooring screws. Contact Granab.

Self-tapping screws for chipboard. Contact Granab.

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Insulation thickness, A mm: 40, 80, 120 or as agreed. Cat. nos. 7040, 7080, 7120

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Material specifications, Granab Subfloor System 3000

Support block with dampening element, adjustment screw and concrete anchor. Cat. no. 3001

Floor girder section Cat. no. 3010

Material specifications, Granab Subfloor System 7000

Adjustment screws are available in standard lengths: 40, 65, 125, 150, 250 and 400 mm Special lengths can be provided. Support block with dampening element, adjustment screw and concrete anchor. Cat. no. 7001

Floor girder section Cat. no. 7010.

Granab subfloor system installed in project at University of Ă&#x2013;rebro

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Installation example High height As standard, the level of Granab Subfloor System 7000 can be adjusted up to 420 mm. If heights are preferred up to approximately 1000 mm, masonite beams are fitted to the Granab girders. Masonite beams are available in various heights and lengths. Masonite beams are attached to Granab girders with self-tapping screws. NB: Mounting screws may not come in contact with adjustment screws/ blocks.

For detailed information, order our installation instructions and DVD.

Plastic film NB: The plastic film is installed above the girders â&#x20AC;&#x201C; not directly on the concrete subfloor. Installation, floating parquet. Granab systems, including girders, are entirely non-organic and not affected by moist environments. By placing the plastic film over the girders, effective, long-lasting moisture protection is obtained against the floor layer above.

Door openings

Installation, floating 22-mm chipboard Granab systems, including girders, are entirely non-organic and not affected by moist environments. By placing the plastic film over the girders, an effective moisture protection is obtained against the floor layer above.

System 3000

System 3000 A board is placed on the girder flanges as a foundation for subsequent installation of a door threshold or cover moulding (NB: Not chipboard).

System 7000 The girder is installed at the centre of the door opening so that the board has the same height difference as other girders. The board shall be screwed and glued to the girder in the door opening. The board is used for subsequent installation of a threshold or cover moulding.

System 7000

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Examples of installations

Project: Gåshaga, 48,000 m2, Lidingö

Project: Sjölyststranda, 9,000 m2, Oslo

Client: Skanska AB

Client: Veidekke ASA

Project: Sickla Udde, 45000 m2, Stockholm Client: Skanska AB

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Project: Lillåudden, 12,000 m2, Västerås

Project: Hamar Bryggeri, 12,000 m2, Hamar

Client: PEAB AB/Mimer AB

Client: Backe-Gruppen AS

Project: Kv. Mältplåten, 6,000 m2, Stockholm

Project: Sentrumgården, Bodö 14,000 m2

Client: Skanska AB

Client: Barlindhaug AS/Skanska AS


Examples of installations Project: Kv. Hjässan, 9,000 m2, Halmstad Client: NCC AB/Anjo Bygg AB

Project: Kv. Amnetisten, 9,000 m2, Solna Client: Skanska AB

Project: Sannegårdshamnen, 13,500 m2, Göteborg

Project: Kv. Tastagate, 3,000 m2, Stavanger

Client: JM AB

Client: Skanska AS

Project: Hotell Haga, 4,500 m2, Stockholm Client: PEAB AB

Project: Norconsult, 3,100 m2, Sandvika

Project: Kv. Kajkanten, 7,200 m2, Göteborg

Client: AF Skandinavia AS

Client: JM AB

See Granab's reference list for more projects.

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Printing: Rydins Tryckeri AB Layout: blomill.se

Version 7. October 2008

Bygg- och Miljöteknik Granab AB Phone: +46 (0) 322-66 76 50 Fax: +46 (0) 322-66 76 55 E-mail: epost@granab.se www.granab.se Mailing address: P.O.Box 172 SE-447 24 Vårgårda Sweden Street address: Verkstadsgatan 4 Vårgårda, Sweden


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