CTA by W.alradhi

cw 2 2

BUILDING ENVELOPE

Name: Walla Alradhi

ID no: @00539313

Project

INTRODUCTION INTRODUCTION

Exterior Elevation

In general UK temperature is gloomy weather which gets cool, wet winters and wet summers,

and that makes us spend around 90% of our time

inside, therefore it affects our psychological state of mind. Due to this case, my design project is focusing on natural daylighting and nature rather than keeping it out, which makes it an ecological design that provides a positive and productive environment for the occupants by including an atrium that leads to energy efficiency also a climate weather

protection

and

indoor

plant

growth

also,

the

superstructure

materials are constructed with sustainable materials.

South building elevation

West building elevation

- -A A- -

bui

plan lding

ap on m

North building elevation

East building elevation elevations scale 1;200

Materials 1-

Greenery exterior on the facade to give the

building a brighter color.

corten steel chosen to match the surrounded

buildings also, it's a high-strength steel that protects itself moreover, corten structural steel possessing excellent weathering resistance.

Modern windows provide few opening methods to

allow safe cleaning which includes Multiple layers of buildi

ng pl an on site

glass with proprietary seals, and gas fill between panes to eliminate draughts, to reduce heat loss.

ashcrete core constructed on the site for the

ground floor layout as it's been explained before on CW1 structure material.

4 elevations used in DS2

CW2

WALLA ALRADHI

c o n s t r u c t i o n

The atrium exterior skin is a glazed curtain wall system

ON N EC C TT II O SS E

supported by steel wide flange beams spanning between

the building structures which the atrium connects. The roof system consists of deep long-span steel trusses covered

d e t a i l s

plants can bind carbon dioxide which could process

with exposed metal deck, insulation and roofing.

in photosynthesis to produce

section scale 1;200

oxygen. Also, many other benefits, therefore, including

plants in my design was

2 3

necessary. The best option of

The type of atrium used is

plants to survive inside of the

categorized as a simple type

atrium are sub tropicals

plants which could handle the

of structure that is four-

fairly consistent climate within

sided. The large opening

a building.

atrium will provide higher intensities which will admit a A

good level of light to the

1- Corten steel panel. 2- air space.

zoom in interior

3- insulation.

greenery area in the center

4- air and moisture barrier. 5- sheating.

of the building.

exterior cladding material:

W L

T A P A

A R E A

G R E E N E R Y / C O M M U N A L

CO2

NOITALITNEV LARUTAN

WARM AIR

A R T

B I C Y C L E

1- parapet flashing.

S T U D I O

S T O R A G E

hemp vertical wall panel:

2- Bond Beam with SECTION A-A

reinforcing bars. 3- interior wall finish.

1 1

wall. Ground floor slab structure is ashcrete: 1- ashcrete slab

5- wire mesh at wall.

7- base slab.

5 4

8- window opning.

2- insulation 8 6

barrier the superstructure of the unit's floor system is

6- L plate channel.

3- DPM/ Radon

4- hempcrete panel

4- hardcore

Timber: 1-Floor finish 2- Timber joists 3- insulation 4- base slab.

all digrams by author

CW2

WALLA ALRADHI

WALL WALL

FLOOR FLOOR

control of moisture:

PRECEDENTS PRECEDENTS

control of moisture:

Hempcrete wall system has the ability to absorb moisture and

The moisture of the timber floor system content is the most

control humidity levels. Air pockets created in the material to pull

important aspect affecting the functioning of wood. The amount of

moisture from the air when the humidity is high and then release it

water can affect several aspects like its strength, weight, and

back when the environment is low that’s why hempcrete saves the

dimensional stability in a particular use.

According to the building regulation

According to the building regulation,

part c 5.5 external cavity

part c 4.13 suspended timber floor

walls should meet the requirement of :

should meet the requirement of having:

1- The Designed and constructed so that their thermal performance

1- ventilated air space between the ground covering.

won't adversely be affected by interstitial condensation.

2- timber also resists moisture.

2- Won’t promote mold growth also, resist the passage of moisture

3- Damp-proof courses must be added between timber to

inside of the building from the ground.

carry moisture from the ground.

edacaf eht no gniddalc

HVAC costs.

80mm thick hybrid insulated after 30 minutes of the test.

fig(1)

Quadcore Karrier panel

3- Not be damaged by moisture from the ground nor carry moisture

Vertical support rails

from the ground.

Fixed corten steel

floor finish

insulation distance 150mm to the ground floor

concrete slab

enarbmem foorp-pmad

Damp proof course

the wall damp-proof course continuous with floor damp-proof

U-VALUE U-VALUE hempcrete wall

Hardcore

external reaction to fire:

The façade cladding system I’m using is corten steel which it’s an insulated panel façade that’s been programmed of BS8414 large-scale testing Fig(1).On the other hand, the hempcrete wall system provides thermal mass, as well as insulation, because of the density of the lime binder, this means that hempcrete is able to store heat within the fabric of the material itself.

Reaction to fire:

ITEM

R-VALUE

Exposed timber sections can be designed with additional protection timber to a section so that the part exposed to fire can protect the inner material from fire damage while the outer part

EXTERNAL AIR

0.03

chars at a slow, expected rate. Structural elements, including mechanical fasteners, can be insulated from the heat by covering them with one or more layers of insulating material of a specified

INTERIOR RENDER

0.18

thickness. HEMP PANEL

According to the building regulation

Thermal elements, According to the

part B to resist the

building regulation part C, continuity of insulation and airtightness the

take the consideration of:

building fabric must be constricted by:

HempWool was referred to the client by a healthy home BREATHABLE

FRAME WITH INSULATION

1- preventable thermal bridges in the insulation layers to be caused

from one part of the building to another. Which external walls

by the gaps within the various elements;

should meet by constructing so that both could be contented.

2-The gaps should be between the edge of each element for

2- Materials and the attachments to them and how they

example around the windows and the door openings.

manufactured should not contribute to the rate of fire spread up

3-The gaps are made to reduce unwanted air leaking through the

the outside of the building.

envelope parts.

LIME RENDER

PANEL SYSTEM

RENDER THICKNESS

0.48

specialist choosing non-toxic materials to prioritize the clients.Fig(2&3)

2.5

0.18

0.054

0.24

: noitaluclaC

1- The external envelope should not contribute to undue fire spread

fig(2&3) The first “hometown” HempWool project in Ketchum, Idaho.

SISALATION

fire spread over external walls must

1.20

all digrams by author

CW2

WALLA ALRADHI

MATERIALS MATERIALS 9

6 4

CW2

1- ashcrete thickness 0.1 m 2- floor insulation thickness 110mm 3- Timber joists 160 mm 4- corten steel cladding 5- hempcrete thickness 200 mm 6- plasterboard 12,5 mm 7- double glazed window 8- greenery wall facade 9- Timber floorboards thickness 15 mm

WALLA ALRADHI

SECTION SECTION

& materials

scale 1;200

W es t bu ild in g se ct io n

scale 1;50

wall section with window opening.

scale 1;50

Timber floor details.

corten steel cladding with the greenery facade.

scale 1;50

By author

CW2

WALLA ALRADHI

REFERENCING REFERENCING Approved Documents. (2021). Retrieved from

TRADA | Timber Research and Development Association. (2021).

https://www.gov.uk/government/collections/approved-

Retrieved from https://www.trada.co.uk

documents

https://www.urbangreenbluegrids.com/measures/green-

Atria Systems | WBDG - Whole Building Design Guide. (2021).

facades/

Retrieved from https://wbdg.org/guides-specifications/buildingenvelope-design-guide/atria-systems

Hempcrete Insulation for Walls, Roof | R-Value & Sound | Hempcrete Direct. (2021). Retrieved from https://hempcretedirect.com/hempcrete-insulation/

Electric Roof Windows | Keylite Roof Windows. (2017). Retrieve from https://www.keyliteroofwindows.com/products/roof-

atrium-longlight-ridgelight. (2019). Retrieved from

windows/electric-operation/

https://commercial.velux.com/products/modularskylights/modular-skylight-solutions/atrium-longlight-ridgelight Water Ingress - Property Care. (2021). Retrieved from Subcontractor Design and Build Hempcrete composite walling

https://www.property-care.org/homeowners/rising-damp/water-

system - UK Hempcrete. (2018). Retrieved from

ingress/

https://www.ukhempcrete.com/gallery/subcontractor-designbuild-hempcrete-composite-walling-system/

What is Hempcrete and How to Use It for Construction - BCB Tradical. (2020). Retrieved from https://www.bcbtradical.com/en/hempcrete/what-is-hempcrete/

CW2

VulcaLap | Aluminium Cladding System - Vulcan Cladding Systems. (2016). Retrieved from https://www.vulcansystems.co.uk/vulcalap-aluminium-cladding/

Tan. (2021). Hempi installation details 2015. Retrieved from

Corten Steel Cladding | Copper Cladding - NES Solutions. (2018).

https://www.slideshare.net/JayeTan/hempi-installation-details-

Retrieved from https://www.nes-solutions.co.uk/cladding/corten-

2015

cladding

Rockwool Rockfloor Acoustic Floor Insulation Slab 25mm (57.6m2

Corten Steel Plates, Corten Steel GR.A A242 Plates

pallet) | Insulation SuperstoreÂŽ. (2021). Retrieved from

Manufacturers, Suppliers & Exporters. (2016). Retrieved from

https://www.insulationsuperstore.co.uk/product/rockwool-

https://www.amcometals.com/corten-steel-plates-manufacturer-

rockfloor-acoustic-floor-insulation-slab-25mm-576m2-pallet.html

exporter.html

WALLA ALRADHI