ce 437 – timber design project: playground dave maruskin (el capitan) jason huck (resident...
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![Page 1: CE 437 – Timber Design Project: Playground Dave Maruskin (el capitan) Jason Huck (resident architect) Jeff Leake (interior design) Bryan Dhume (special](https://reader035.vdocument.in/reader035/viewer/2022070411/56649cb05503460f9497573d/html5/thumbnails/1.jpg)
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CE 437 – Timber Design
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CE 437 – Timber Design
Project: Playground
Dave Maruskin (el capitan)
Jason Huck (resident architect)
Jeff Leake (interior design)
Bryan Dhume (special joint designer)
Jason Manson (chief carpenter)
Zach Bazell (CAD technician)
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Timber Design Project
Objective: To design and analyze a timber playset using Load and
Resistance Factor Design
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CE 437 – Timber Design
Project: Playground
Dave Maruskin (el capitan)
Jason Huck (resident architect)
Jeff Leake (interior design)
Bryan Dhume (special joint designer)
Jason Manson (chief carpenter)
Zach Bazell (CAD technician)
![Page 9: CE 437 – Timber Design Project: Playground Dave Maruskin (el capitan) Jason Huck (resident architect) Jeff Leake (interior design) Bryan Dhume (special](https://reader035.vdocument.in/reader035/viewer/2022070411/56649cb05503460f9497573d/html5/thumbnails/9.jpg)
Specifications
- Access to shelter by ladder and railing for safety
- All members used are pressure treated Southern yellow pine
- Two structures connected by a bridge: housed and platform portions
- Each portion is 8 x 8 ft. and 8 ft. high
- 4 ft. walkway around shelter
- Roof covers an area of 16 x 16 ft. with a pitch of 12 on 12
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Loads Applied (unfactored)
Dead Load (self-weight): 50 lb./ft.3
Live Load (roof): 12 lb./ft.2
Live Load (deck): 50 lb./ft.2
Snow Load (roof): 21.2 lb./ft.2
Snow Load (deck): 30 lb./ft.2
Wind Load (leeward side): 3.9 lb./ft.2
Wind Load (windward side): 6.25 lb./ft.2
Wind Load (roof lateral): 5.47 lb./ft.2
Shingles: 3 lb./ft.2
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Major Vertical Members
- 4 x 4 posts at 12 feet long posts supporting platform
- 6 x 6 at 16 feet long for housed portion
- 4 x 4 king posts supporting roof truss
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Elevation View
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Elevation View – Bent 3
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Elevation View – Bent 4
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Major Horizontal Members
- 4 x 8 ridge beam at 16 feet long
- 4 x 6 fascia beams at 16 feet long
- 4 x 4 for truss rafters, chords
- 2 x 8 girts and joists on platform
- 2 x 8 joists in housed portion
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Plan View – Bottom of Truss
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Plan View – Deck
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Other Materials
- 1” plywood sheathing
- 2 x 6 tongue-in-groove decking
- 2 x 4 kneebraces
- 2 x 6 bridge girts
- 4 x 4 verticals and 2 x 4 horizontals for railing
- 2 x 6 patio joists
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Connections- Posts secured to concrete with anchors
- Girt connections utilize housed mortise and tenon
- Extensive use of joint hangars
- Truss constructed with fabricated gusset plate
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Detail – Post Anchor
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Detail – Mortise & Tenon Joint/Joist Hangars
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Detail – Truss Gusset Plate
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SAP 2000 – Finite Element Analysis
- Structure treated as frame (connections transfer moment)
- Support connections assumed pinned
- Load factors applied:
Dead Load - 1.2
Live Load - 1.6
Snow Load - 0.5
Wind Load - 0.7
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Axial Forces
Maximum Factored Loads:Maximum Factored Loads:
Rafters: 1.5 kips (tension)Rafters: 1.5 kips (tension)
Bottom Chords of Truss: 1.4 kips (compression)Bottom Chords of Truss: 1.4 kips (compression)
Kneebraces: 1.0 kips (compression)Kneebraces: 1.0 kips (compression)
L.R.F.D. Design Values:L.R.F.D. Design Values:
Rafters (4 x 4): 17.5 kips (tension)Rafters (4 x 4): 17.5 kips (tension)
Bottom Chords of Truss (4 x 4) , 6’ unbraced: 10.2 kips Bottom Chords of Truss (4 x 4) , 6’ unbraced: 10.2 kips (compression)(compression)
Kneebraces (2 x 4): 7.1 kips (compression)Kneebraces (2 x 4): 7.1 kips (compression)
4 x 44 x 4
4 x 4 4 x 4
2 x 4
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Moment 2-2
Maximum Factored Loads:Maximum Factored Loads:
Columns: 4.0 in.-kipsColumns: 4.0 in.-kips
L.R.F.D. Design Values:L.R.F.D. Design Values:
Columns (6 x 6) : 40.7 in.-kipsColumns (6 x 6) : 40.7 in.-kips
6 x
6
6 x
6
6 x
6
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Axial Forces
Maximum Factored Loads:Maximum Factored Loads:
King Post: 5.0 kips (compression)King Post: 5.0 kips (compression)
Columns: 5.5 kips (compression)Columns: 5.5 kips (compression)
L.R.F.D. Design Values:L.R.F.D. Design Values:
King Post (4 x 4) , 8’ unbraced: 10.2 kipsKing Post (4 x 4) , 8’ unbraced: 10.2 kips
Columns (6 x 6) , 8’ unbraced: 23.4 kips (compression)Columns (6 x 6) , 8’ unbraced: 23.4 kips (compression)
6 x
66
x 6
6 x
66
x 6
4 x
4
4 x
4
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Moment 3-3
Maximum Factored Loads:Maximum Factored Loads:
Ridge Beam: 53.0 in.-kipsRidge Beam: 53.0 in.-kips
L.R.F.D. Design Values:L.R.F.D. Design Values:
Ridge Beam (4 x 10) : 99.7 in.-kipsRidge Beam (4 x 10) : 99.7 in.-kips
4 x 8
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Shear 2-2Shear 2-2
Maximum Factored Load:Maximum Factored Load:
Ridge Beam: 2.8 kipsRidge Beam: 2.8 kips
L.R.F.D. Design Values:L.R.F.D. Design Values:
Ridge Beam (4 x10) : 3.37 kipsRidge Beam (4 x10) : 3.37 kips
4 x 8
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Axial Forces
Maximum Factored Loads:Maximum Factored Loads:
Columns: 3.9 kipsColumns: 3.9 kips
Posts: 1.8 kipsPosts: 1.8 kips
L.R.F.D. Design Values:L.R.F.D. Design Values:
Columns (6 x 6) , 6’ unbraced: 25.4 kipsColumns (6 x 6) , 6’ unbraced: 25.4 kips
Posts (4 x 4) , 8’ unbraced length: 10.2 kips Posts (4 x 4) , 8’ unbraced length: 10.2 kips
6 x
6
6 x
6
6 x
6
4 x
4
4 x
4
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Moment 2-2Moment 2-2
Maximum Factored Loads:Maximum Factored Loads:
Fascia Beam: 9.8 in.-kipsFascia Beam: 9.8 in.-kips
Fasica Beam , Moment 3-3: 23.0 in.-kipsFasica Beam , Moment 3-3: 23.0 in.-kips
L.R.F.D. Design Values:L.R.F.D. Design Values:
Fascia Beam (4 x 6) : 24.3 in.-kipsFascia Beam (4 x 6) : 24.3 in.-kips
Fascia Beam (4 x 6) , Moment 3-3 : 38.2 in.-kipsFascia Beam (4 x 6) , Moment 3-3 : 38.2 in.-kips
4 x 6
4 x 6
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Deformation due to Dead Load
Deformation due to Live Load
Deformation due to Snow Load
Deformation due to Wind Load
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Quantities of Material Used
List of Members for Playground ProjectMember's
Lenghts Quantitytype: 2*2
3ft 33type: 2*4
2.5ft 22.8ft 203.0ft 153.2ft 24.5ft 2
type: 2*62ft 44ft 288ft 4
type: 2*83ft 14ft 128ft 10
type: 4*43ft 94ft 21
5.7ft 288ft 710ft 211.3ft 1812ft 616ft 2
type: 6*616ft 8
type: 4*10 16ft 1
type: 2*6 floor8ft 2816ft 32
type: 4*8 CDX plywood 20type: wood shingles 6
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Cost of Materials Cost Information for Playground Project (timber)
Member Type Qty. price/member cost8ft (2" x 2") 33 1.99$ 65.67$ 8ft (2" x 4") 21 2.11$ 44.31$ 8ft (2" x 6") 37 2.80$ 103.60$ 8ft (2" x 8") 17 4.16$ 70.72$ 8ft (4" x 4") 33 5.66$ 186.78$
16ft (4" x 4") 28 14.13$ 395.64$ 16ft (6" x 6") 8 34.87$ 278.96$ 16ft (4" x 8") 1 250.00$ 250.00$
8ft floor (2" x 6") 28 3.79$ 106.12$ 16ft floor (2" x 6") 32 9.99$ 319.68$
4' x 8' CDX plywood 20 14.24$ 284.80$ wood shingles 6 34.00$ 204.00$
connectors (nail prices included where applicable) 545.40$ 2,855.68$
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Connector Cost Breakdown
C o s t In fo rm a tio n fo r C o n n e c to rsc o nne c to r typ e Q ty. p r i c e /m e m b e r c o s t
jo is t ha ng e rs (2 " x (6 & 8 )" ) 6 0 0 .9 0$ 5 4 .0 0$ jo i s t ha ng e rs (4 " x 4 " ) 4 8 1 .1 0$ 5 2 .8 0$ ra fte r ha ng e r (4 " x 4 " ) 1 8 1 .2 0$ 2 1 .6 0$ p o s t a nc ho r (4 " x 4 " ) 4 1 0 .0 0$ 4 0 .0 0$ p o s t a nc ho r (6 " x 6 " ) 8 1 5 .0 0$ 1 2 0 .0 0$
ra fte r tie s 1 8 0 .3 0$ 5 .4 0$ g us s e t p la te 1 0 2 0 .0 0$ 2 0 0 .0 0$
la g s c re w s (1 /2 " x 5 " ) 2 4 0 .9 5$ 2 2 .8 0$ la g b o lts (5 /8 " x 4 " ) 8 1 .0 0$ 8 .0 0$ la g b o lts (5 /8 " x 6 " ) 1 6 1 .3 0$ 2 0 .8 0$
5 4 5 .4 0$
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The End