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SUDS Ongoing land development and climate change place increasing burdens on existing surface water drainage networks, resulting in the need to make dramatic changes in our approach to the safe management of surface water. The use of Sustainable Urban Drainage Systems (SUDS) is one of the most effective ways to reduce pollution and flooding risk as confirmed through Government legislation and planning guidance such as PPG25 ‘ Development and flood risk’. The civils team at EH Smith can suggest the most suitable solution for each specific requirement from the many options now available.

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STORMWATER MANAGEMENT PRECAST CONCRETE BOX CULVERTS Design Chemical Class DC-4 Resistance Milton Precast Concrete Box Culverts are specified and used regularly for culverting highways, storm and foul sewers, sea outfalls, tunnels and subways, underpasses, stream crossings, vertical chambers and in modified form as channels with removable slabs or as portals. In addition they may be used as tanks for attenuation of storm or foul water and can be provided with dished inverts or channels for dry weather flow. Box Culverts provide high flow capacities even where the gradient is low or headroom is restricted. They are individually designed to cater for a wide range of external loading conditions from shallow to deep fill. Bedding It is generally recommended that the culvert should be installed on a 200 thick granular bedding as specified in the Specification for Highway Works (MCDHW) or UK WIR Ltd 'Civil engineering specification for the water industry'. Alternative bedding designs using insitu concrete and blinding or piling may be required in poor ground. Laying and jointing Joint priming may be applied at works or on site. Position the first unit with the socket facing the direction of construction to receive the second unit. Fix the appropriate type of jointing tackle to the culverts and apply the Milseal jointing strip to the sloping primed face of the socket to form a complete gasket mitring joins and at the corners. Supporting the weight of the second unit, guide it as closely as possible to the first unit taking care to exclude any bedding material. Carefully draw the spigot of the second culvert into the socket of the first. The flexible jointing compound should be compressed by not less than 30% to effect the necessary seal. This is achieved when the gap between the joint faces on the inside of the culvert does not exceed 10mm. It is recommended that the dead anchor is not relocated for jointing subsequent units until the cable or chain length is exceeded. Jointing equipment should be capable of providing a force of I0kN per metre run of jointing strip.

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STORMWATER MANAGEMENT PRECAST CONCRETE BOX CULVERTS SIZES Design Chemical Class DC-4 Resistance Type

MCI 0.05 MC1O.07 MCI 2.05 MCI 2.07 MCI 3.05 MCI 3.06 MCI 3.07 MCI 3.10 MCI 5.07 MCI 5.10 MCI 5.12 MC 15.15 MCI 7.07 MCI 7.10 MCI 7.12 MCI 7.15 MCI 8.10 MC20.10 MC20.12 MC20.15 MC20.20 MC22.12 MC22.15 MC22.17 MC24.10A MC24.12A MC24.15A MC24.18A MC24.21A MC25.10 MC25.15 MC25.17 MC27.10A MC27.12A MC27.15A MC27.18A MC27.21A MC27.12 MC27.15 MC27.17 MC27.20 MC30.10A MC30.12A MC30.15A MC30.18A MC30.21A MC30.20 MC30.25 MC30.27 MC33.10A MC33.12A MC33.15A MC33.18A MC33.21A MC35.15 MC36.10A MC36.12A MC36.15A MC36.18A MC36.21A MC40.25

Internal Dimensions (m)

Width

Height

Length

1.00 1.00 1.25 1.25 1.375 1.375 1.375 1.375 1.50 1.50 1.50 1.50 1.75 1.75 1.75 1.75 1.875 2.00 2.00 2.00 2.00 2.25 2.25 2.25 2.40 2.40 2.40 2.40 2.40 2.50 2.50 2.50 2.70 2.70 2.70 2.70 2.70 2.75 2.75 2.75 2.75 3.00 3.00 3.00 3.00 3.00 3.00 3.00 3.00 3.30 3.30 3.30 3.30 3.30 3.50 3.60 3.60 3.60 3.60 3.60 4.00

0.50 0.75 0.50 0.75 0.50 0.625 0.75 1.00 0.75 1.00 1.25 1.50 0.75 1.00 1.25 1.50 1.00 1.00 1.25 1.50 2.00 1.25 1.50 1.75 1.00 1.20 1.50 1.80 2.10 1.00 1.50 1.75 1.00 1.20 1.50 1.80 2.10 1.25 1.50 1.75 2.00 1.00 1.20 1.50 1.80 2.10 2.00 2.50 2.75 1.00 1.20 1.50 1.80 2.10 1.50 1.00 1.20 1.50 1.80 2.10 2.50

2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 1.5 1.5 1.5 1.5 1.5 2.0 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.0 1.0 1.0 1.5 1.5 1.5 1.5 1.5 1.0 1.5 1.5 1.5 1.5 1.5 1.0

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Effective Flow Rate at Fall Cross Sectional Area 1: 1 000-m'/s

Nominal Weight of Standard Units (Tonnes)

0.485 0.735 0.591 0.904 0.654 0.826 0.998 1.341 1.065 1.440 1.815 2.190 1.252 1.690 2.128 2.565 1.815 1.940 2.440 2.940 3.940 2.753 3.315 3.878 2.340 2.820 3.540 4.260 4.980 2.440 3.690 4.315 2.640 3.180 3.990 4.800 5.610 3.377 4.065 4.753 5.440 2.940 3.540 4.440 5.340 6.240 5.940 7.440 8.190 3.240 3.900 4.890 5.880 6.820 5.190 3.540 4.260 5.340 6.420 7.500 9.940

2.25 2.57 2.66 2.97 2.81 2.75 3.13 3.44 3.84 4.15 4.49 4.80 4.22 4.53 4.84 5.63 5.09 5.79 6.17 6.54 7.30 6.60 6.98 7.35 6.43 6.73 7.17 7.62 8.07 8.78 7.33 7.70 7.79 8.13 8.63 9.14 9.64 8.34 8.71 9.16 9.60 8.35 8.69 9.19 9.70 10.20 7.54 8.08 8.43 8.91 9.25 9.75 10.26 10.76 7.73 9.47 9.81 10.31 10.82 11.32 9.97

0.58 1.01 0.74 1.32 0.84 1.17 1.52 2.25 1.62 2.44 3.31 4.20 2.03 3.06 4.15 5.28 3.37 3.69 5.03 6.42 9.31 5.94 7.60 9.31 4.75 6.14 8.33 10.60 12.94 5.03 8.82 10.83 5.57 7.22 9.82 12.54 15.34 7.84 10.08 12.40 14.78 6.41 8.33 11.36 14.54 17.82 16.72 22.33 25.19 7.27 9.45 12.93 16.59 20.38 14.00 8.14 10.60 14.54 18.69 23.00 33.53


STORMWATER MANAGEMENT TUBOSIDER Tubosider are the largest manufacturer of corrugated steel pipe products in Europe. There are several advantages of their fabricated tanks over traditional concrete or crate systems: • Infinite variety of layouts using pipes from 0.3 to 3.6mtr • Fully pre-fabricated including access shafts, ladders, inlet connections • And flow regulators to restrict discharge to a specified rate. • Accessible for routine inspection • Designed to Highways Agency Standard BD12, to withstand full highways loadings • BBA certified and the jointing method has been independently tested and approved by Wrc. The Tubosider product range. 1. Stormwater attenuation tanks 2. Flow regulators and duty standby pumps 3. Soakaways 4. Culverts 5. Acoustic barriers 6. Separators

TUBOSIDER FLOW REGULATORS Tubosider Flow Regulators can be installed in new or existing manholes, they can also be installed directly into Tubosider stormwater management tanks. Each Flow Regulator is designed and fabricated to meet the specific site requirements, all are manufactured from high grade stainless steel AIS1316 for maxium durability.

BELOW GROUND DRAINAGE & CIVILS SYSTEMS WATER MANAGEMENT SYSTEMS AquaCell® • For stormwater storage or soakaway applications • Each unit is modular (1.0m x 0.5m x 0.4m) with 190 litre capacity, 95% void and weighs 9Kg • Can be clipped together in single layers and pegged together in multiple layers • Fully BBA approved and can meet with the • Technical Requirements of the NHBC • Significantly reduced risk of flooding Garastor® • A polypropylene flow control chamber connected to a water storage reservoir either made up of AquaCell units or located in a void beneath the garage of individual houses • Two versions of Garastor are available, the 6SC500 (500mm dia x 1m deep) for garage installations, and the 6SC501 (500mm dia x 1.25m deep) for use with AquaCell • Can be used as a flow control device for any AquaCell storage tank, no greater than one unit deep with a discharge of up to 1.4 l/s via the 30mm release flow orifice • Maintenance free, with no moving parts or filters • Safer than open/above ground structures • Garastor® is manufactured under licence (PATENT NO GB2357093) Silt Trap • Polypropylene chamber to collect silt and debris (500mm dia x 1.25m deep) • Prevents silt from entering storage/ soakaway tank, clogging inlet pipework • Ensures full capacity of storage/soakaway tank is not reduced due to siltation build-up • Ideal for use in conjunction with the • AquaCell Stormwater Management System • Lightweight and easy to install • Easily extended (if required) using the 500mm Extension Kit (6SC205)

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STORMWATER MANAGEMENT Below Ground Drainage and Civils Systems

STORMWATER MANAGEMENT SYSTEM AQUACELL SYSTEM AquaCell Unit (for trafficked sites) Size 160

Part Number 6LB100

Pack Qty 12

For soakaway and storage applications - 1.0m x 0.5m x 0.4m modular unit - 95% void. Supplied complete with three clips and two shear connectors.

NEW AquaCell Lite Unit (for landscaped/non-trafficked sites) Size 160

Part Number 6LB050

Pack Qty 12

For soakaway and storage applications - 1.0m x 0.5m x 0.4m modular unit - 95% void. Supplied complete with three clips and two shear connectors. NEW

Part Number 6LB600

Pack Qty 1

500mm dia x 1.25m depth

Part Number 6UR141

Pack Qty 1

S/S Adaptor - 6UR socket x 160mm BS EN 1401 spigot for connection of Osma UltraRib to infiltration unit.

Part Number 6UR099

Pack Qty 1

S/S Level Invert Reducer - to 110mm OsmaDrain pipe.

Part Number 6TW141

Pack Qty 1

S/S Adaptor - 6TW socket x 160mm BS EN 1401 spigot

Part Number 6D099 a

Pack Qty 1

S/S Level Invert Reducer - to 110mm OsmaDrain

Part Number 4D916

Pack Qty 1

PE Adaptor - 160mm spigot connection to OsmaDrain

Part Number 6LB104

Pack Qty 1

Flange Adaptor (150mm) 6UR socket for connection of Osma UltraRib to infiltration unit at positions other than preformed opening.

Part Number 6LB106

Pack Qty 1

Flange Adaptor (225mm) 9UR socket for connection of Osma UltraRib to infiltration unit

Part Number 6LB105

Pack Qty 1

AquaCell Clip (spare) - for joining Infiltration Units

Part Number 6LB102

Pack Qty 1

AquaCell Shear Connector (spare) - for joining Infiltration Units in multi layer installations

Silt Traps Size -

Ancillary Items Size 150

Size 150 Size 150 Size 160 Size 150 Size 150

Size 225 Size Size -

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STORMWATER MANAGEMENT ELLIPTICAL PIPES Elliptical pipes are used for foul and surface water drainage applications, stream diversions, culverting and attenuation storage tanks. The pipe’s elliptical internal profile is hydraulically efficient and the external polygonal profile is structurally efficient. Together they provide a unique and highly cost-effective reinforced concrete drainage product. This system offers significant advantages over others, particularly box culverts, by providing superior hydraulic performance and a fully watertight elastomeric captive gasket joint. ••

SPECIFIER BENEFITS • Where pipes are laid in either the vertical or horizontal plane, the elliptical profile permits self cleansing velocities at low flow rates. Consequently the risk of siltation is reduced compared to the equivalent box culvert. • Improved flow rates mean pipes can be laid at shallower gradients thereby reducing trench excavation costs. • In situ secondary inverting is not required for dry weather flows. • Where ground levels and invert levels only permit minimal cover, pipes can be laid in the horizontal plane and still provide an excellent hydraulic capacity. • Compaction is required only to prevent surface settlement, therefore special backfill materials are rarely required. • Pipes can be designed to withstand full HA & HB45 wheel loadings. • Where loadings permit, minimum cover depths of 200mm may be accommodated. CONTRACTOR BENEFITS • Pipes have a high performance elastomeric captive gasket for quick easy jointing and a fully watertight joint. • Pipes are 2.4m long, therefore fewer joints are required than with box culverts. • Installation costs are further reduced since joints do not require priming or sealing with a separate sealing compound. • An in-wall joint and flat polygonal sides enable pipes to be laid on a flat bed without socket holes. • Optional cast in lifting anchors enable safe and rapid handling.

Elliptical Pipes Data Internal Dimensions ‘L x H’ mm 1000 x 650 1150 x 750 1650 x 1000 1950 x 1150 2350 x 1350 2650 x 1500

External Dimensions ‘A x B’ mm 1250 x 900 1400 x 1000 1930 x 1280 2270 x 1470 2710 x 1710 3050 x 1900

End Face Lengths ‘C’ mm 520 600 850 1020 1230 1450

‘D’ mm 370 430 500 570 670 740

Effective Length m 2.40 2.40 2.40 2.40 2.40 2.40

Approx Product Weight kg 2600 3000 4600 6300 8600 10800

All dimensions and weights are approximate, customers should ensure that lifting equipment has sufficient capacity to allow for variations.

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STORMWATER MANAGEMENT ELLIPTICAL PIPES Manhole Access

Attenuation Tank

Narrow Trench

Minimal Cover

FITTINGS A range of elliptical fittings can be manufactured to order including junctions, precast manhole access shafts, end walls and chambers. QUALITY & SPECIFICATION Elliptical pipes are manufactured using modern computerised concrete batching equipment to achieve consistently high quality products with sharply defined joint profiles. Elliptical pipes are supplied under a Quality System complying with BS EN ISO 9001:2000 and the relevant parts of BS EN 1916 and BS 5911-1 Precast concrete pipes, fittings and ancillary products. SCHEME DESIGN EH Smith offer advice at all stages of scheme design and installation. When specifying and installing elliptical pipes please refer to the current version of Product Data Sheets: • • • •

PD PD PD PD

25 26 28 29

– – – –

Hydraulic design charts for elliptical pipes. Structural design table for elliptical pipes. Specification for the manufacture of elliptical pipes. Installation of elliptical pipes.

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STORMWATER MANAGEMENT CHARCON INFILTA BLOCK PAVING Charcon Infilta is a rectangular block paving system, incorporating a 5 mm spacer design. Each interlocking unit with its specially designed nib structure, provides a 5 mm void, allowing ingress of water through to the storage system. Available in red, brindle, charcoal and natural grey, Charcon’s Infilta block paving offers all the strength and performance properties of Charcon’s established range, with the added environmental benefit of sustainable drainage.

CHARCON GRASSGRID Charcon Grassgrid is a highstrength, interlocking cavity grid system, which can be used to create natural looking hard standing for vehicles and linings for swales. Suitable for all off-road areas including roadside verges, overspill car parks and recreational areas, Charcon Grassgrid can also be used for airfield taxiways and helipads and for the strengthening of embankments and watercourses.

SUSTAINABLE URBAN DRAINAGE SYSTEMS (SUDS)

Key to SUDS illustration 1 Bardon PlayAble sports surfacing on Bardon Drainasphalt, with Charcon Permavoid™/granular system 2 Charcon Permavoid™ system 3 Charcon Geomembrane 4 Bardon Hydrain with granular/Charcon Permavoid™ sub-base 5 Charcon Permachannel™ 6 Charcon Grassgrid lining a swale 7 Charcon Infilta with Charcon Permavoid™/granular system 8 Charcon Geotextile 9 Charcon Permakerb™ draining into Charcon Permavoid™ via an impermeable asphalt surface 10 Charcon Infilta with a granular sub-base 11 Charcon Permavoid™ system

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SUDS