Construction as Alchemy Assignment 1B - Timber Deck

35

Ø60

35 35 625 345

820

35

6mm gap between decking to provide greater ventilation and allow for expansion and contraction

35

2890 section

450

AREA D 0.17m2

AREA A 24.0m2

ENGAGED PIER 2 TRIBUTARY AREA 3.77m2

FOOTING 5 TRIBUTARY AREA 4.93m2

FOOTING 6 TRIBUTARY AREA 3.83m2

35

Staggering of decking boards to allow for expansion and contraction.

Decking lengths: 450 2750 1375 3175 2275 5450

ENGAGED PIER 1 TRIBUTARY AREA 1.93m2

AREA E 0.75m2

AREA B 6.24m2

elev

4150

2

4

section

A

3

35

35

1890

4780

elev

1

section

Scale: 1:50

120 120 120 225

ELEVATION 1

520

Scale: 1:50

Construction as Alchemy ARCH10002

1950

C L

1950

6740

2019 Semester 1

Studio Leader: Yi Lobachevsky Studio: 03

C L

430

120 120 120 225

150

Groundline

4850

ELEVATION 2

FOOTING 4 TRIBUTARY AREA 3.82m2

For edge detailing see B3

610

4 3 2 1

FOOTING 2 FOOTING 3 TRIBUTARY AREA TRIBUTARY AREA 4.49m2 5.30m2

230 x 230 engaged pier to provide support for 75 wide bearer

Edge detailing 3 / 35 x 120 decking boards stacked vertically with 13mm gap to cover bearers and joists

1790 610

2400

350 x 230 engaged pier to provide support for 150 wide bearer

C L

DECK AREA PLAN

B

Scale: 1:50

1890

AREA C 0.34m2

Mitre joint for edge detailing, strengthened with splines

6740

1790

0

35

1

DECK PLAN

150 150 150 150

FOOTING 1 TRIBUTARY AREA 1.93m2

2

805

100 100 205

2400

35

A

610

section

Concrete stairs 1890mm in length, 4 risers 152mm, 3 going 300mm as per AS1657

N

5520

Decking board cut to follow curve of brick wall, 10mm distance, max cantilever

900

ADDITIONAL INFORMATION: - Decking boards to be fixed by 75mm x No.14 Type 17 Batten Screw - Bolt holes to be drilled at a size of bolt diameter + 10% - Sawn upperface to be used for greater long-term weathering - 3mm arris used for top corners of decking - End-grain to be sealed after sawing with a suitable sealer such as Mobilcer-M Wax Emulsion

900

35

35

1280

780

35

450

35

B

35

355

Ø60 315 405

405

Decking cut-out to allow growth of tree

100 3395

815

5520

Scale: 1:50

Name: Will Scobie Student Number: 892855

Part 1B : Relaxation Deck

B1

1550

150

355

400

B

35 x 120

780 400

150 x 50

C LC L

450

100

450

JOISTS

450 450

C L

5450

3400

3700

450 450 450

C L

BEARERS

2 / 200 x 75

450

C L

*B (175 x 75)

C L

F14 unseasoned Red Ironbark

450

Stair width

1890

Stair length 400

Pad footing spacing

400

1090 400

Joist span and cantilever

425

Bearer spacing

460

Joist lengths

75

C L

elev

1

290

400

1770

1880

150

C L

1550

1800

1950

2340

section

B

400 150

C L

1550

1800

1950

150

C L

355

430

Scale: 1:50

Studio Leader: Yi Lobachevsky Studio: 03

cross section: 400 x 400 depth: 200

Name: Will Scobie Student Number: 892855

Ref. Table: 6 - Deck Joists - Unseasoned

single span: 3700 *(2300) maximum cantilever: 925 *(575) continuous span: 3900 maximum cantilever: 975

Floor Load Width [FLW]: 2400

Height above ground 225 *(250) Ref. Table: AS2870

Concrete

Tributary area: Pad footings able to support 10m2 Maximum actual tributary area is 5.30m2

Ref. Table: AS2870 Residential Slabs and Footings

height: 635 (*660)

PAD FOOTINGS

maximum cantilever: 450

Varies- N/A joists/ bearers 1950 3800

Ref. Table: 7 - Deck Bearers Unseasoned Timber

DECK AREA CALCULATIONS: (see B1 for Area Plan) Area A = 4404 x 5450 = 24m2 Area B = 2270 x 2750 = 6.24m2 Area C = 370 x 900 = 0.34m2 Area D = 380 x 450 = 0.17m2 Area E = 890 x 850 = 0.75m2

4330

BEARER AND JOIST LAYOUT PLAN

2019 Semester 1

cross section: 100 x 100

Red Ironbark used to due to its high strength grade and durability. https://www. woodsolutions.com.au/ wood-species/ ironbark-red

Concrete

400

100

Bearer length

400

STUMPS

single span: 1300 *2500 maximum cantilever: 325 *625 continuous span: 1800

1950

770

Bearer span and cantilever

gap between boards (mm): 6

F14 un-seasoned Red Ironbark

C L

450

C L

300 300 300

450

A

A

C L

section

section

Construction as Alchemy ARCH10002

450

Ref. Table: 4 -Allowable Decking Board Spans

450

400

100 280 770

N/A

*F22 unseasoned Red Ironbark used for single-span joist

C L C L

2

Bearer B: 75 x 150 bearer used due to shorter span, adjusted height of stump totaling 820

2275

2750

3400

elev

N

F14 unseasoned Forest Red Gum

C L 300 C LC L 850

570

110

100

MEMBER SCHEDULE DECKING

Joist spacing

230

230

Pad footing spacing

Hung joist length

section

Engaged piers spacing

Bearer B length and span

F22 single-span joist used due to deck cut-out, 2820 length with 365 and 355 cantilever

OTHER INFORMATION + REFERENCE TABLE

400

1800

430

MAX. ALLOWABLE SPAN (mm)

1740

150

C L

C L

925

350

1950

F22 joist used due to small member cantilever and hung joist

Shorter joist span (1770) due to bearer being centred on engaged pier

Bearer span and cantilever with engaged pier

1690

1800

C L

MAX. ALLOWABLE SPACING (mm)

230 Engaged pier and pad footing spacing

380

150

1950

[e.g. F7 unseasoned Cypress]

Joist span and cantilever

455

HEIGHT (mm) x WIDTH (mm)

Bearer spacing

4785 C L

MATERIAL (stress grade + timber type)

Total joist length

Total Area = A + B + C + D - E = 24m2 + 6.24m2 + 0.34m2

+ 0.17m2 - 0.75 = 30m2

Part 1B : Relaxation Deck

B2

6mm spacing between decking boards

F14 unseasoned Red Ironbark 150 x 50 joists spaced at 450 for maximum efficiency

75 120 120 120

F14 unseasoned Red Forest Gum 35 x 120 4.5kN point load decking boards only span 400 due to max joist spacing of 450

150

35 150 200

610

610

200

150

225

225

35

Hung joist used to fix edge detailing

120 120 120

Joist header used to fix edge detailing

225

Edge detailing for cut-out surrounding tree only two 35x120 decking boards deep

Edge detailing 3 / 35 x 120 decking boards stacked vertically with 13mm gap to cover bearers and joists

Groundline

100x100 cross section concrete stump

2 / 200 x 75 F14 un-seasoned Red Ironbark used due to large spanning capacity creating efficiency of design

400

400 x 400 x 200 pad footing

SECTION A SHOWING EDGE

2019 Semester 1

See B2 for dimension on stairs and strip footings supporting stairs

Pad footing supporting Bearer B offset due to shorter bearer span and spacing of stairs

SECTION B SHOWING EDGE

Scale: 1:20

Construction as Alchemy ARCH10002

200

600

200

600

400

Groundline

Scale: 1:20

Studio Leader: Yi Lobachevsky Studio: 03

Name: Will Scobie Student Number: 892855

Part 1B : Relaxation Deck

B3

Large deck surface area enables multi-functional use of space as both a deck for relaxing but potentially as a performative space as a stage for various events

Stairs 1890 wide to allow for two-directional foot-traffic.

Decking to be coated with oil based stain and water repellant to prevent staining from food or drink

Tree interacts with deck to provide shading from afternoon sun Side of stairs runs flush with deck edge detailing to provide a continuous, aesthetic surface Deck cut-out engages with site-plan and allows for future growth of tree

Cantilevered section provides seating aligned with alcove and curve in brick wall to provide a space for contemplation

Deck allows acces for interaction with the tree at ground level, producing two separate spaces

3D HERO VIEW

Construction as Alchemy ARCH10002

2019 Semester 1

Studio Leader: Yi Lobachevsky Studio: 03

Name: Will Scobie Student Number: 892855

Part 1B : Relaxation Deck

B4

Inefficiency of joists due to deck cut-out

F22 stress grade joist used to provide greater structural support for small individual member Joist hangers used to support cross-members to create opening for tree

Double joists used to provide greater structural support around opening

Concrete stairs 1890mm in length, riser 152mm, going 300mm as per AS1657 F22 stress grade joist used to enable greater singlespan and cantilever due to the deck cut-out

400 x 900 x 600 Reinforced concrete footings for stairs

PERSPECTIVE 1

Concrete stairs extend 160 below ground,preventing slippage of earth around base

Sculpture to be placed in alcove to create a feature that interacts with sunlight passing through gaps in the brick wall

PERSPECTIVE 2

Hung joist used to fix deck edging

Pad footing offset in comparison to other pad footings on southern side due to shorter bearer length and position of stairs

Header joist used to to fix deck edging

Cut-out around tree supported by joist hangers

10 mm gap between bearers and brick wall

Top brick of engaged pier cut to height 50mm to support bearer

Engaged piers supporting bearers

PERSPECTIVE 3 Construction as Alchemy ARCH10002

230 x 230 engaged pier

Mitre joint used on each edge detailing corner, strengthened with splines

Efficient deck design using 6 pad footings and 2 engaged piers

Double joist used for extra structural integrity supporting the cut-out

230 x 350 Engaged pier

Brick wall footings

PERSPECTIVE 4 2019 Semester 1

Studio Leader: Yi Lobachevsky Studio: 03

Name: Will Scobie Student Number: 892855

Part 1B : Relaxation Deck

B5