The second storey of an office building consists of a composite steel deck 75mm deep with...

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The second storey of an office building consists of a composite steel deck 75mm deep with a 65mm concrete cover (normal density cover). The floor is topped with 3/4" Plywood and 34" hardwood. The composite steel deck It also supports ducts/pipes, wiring, and fireproofing. Due to occupancy, allow a live load of 2.1kPa and a dead load of 1.2 kPa for partitions. a) Determine the total dead load supported by the composite steel deck b) Determine the total factored combined load of ultimate limit states c) Determine the load for serviceability criteria of the following: Deflections are limited to L/360 under live loads or L/240 under total load, whichever governs. STEEL DECKS Steel deck 38 mm deep (up to 0.91 mm thick) (1.22 to 1.52 mm thick) Steel deck 76 mm deep (Narrow-Rib) (up to 0.91 mm thick) (1.22 to 1.91mm thick) Steel deck 76 mm deep (Wide-Rib) (up to 0.91 mm thick) (1.22 to 1.52 mm thick) for cellular deck, add CONCRETE, per 100 mm - 2350 kg/m³ (N.D.) -2000 kg/m³ (slag aggregate) -1850 kg/m³ (S.L.D.) HOLLOW CORE PRECAST (no topping) - 200 mm deep (N.D.) - 300 mm deep (N.D.) WOOD JOISTS (at 400 mm centres) -38 mm x 184 mm joists - 38 mm x 235 mm joists - 38 mm x 286 mm joists PLYWOOD - 11 mm thick - 14 mm thick - 19 mm thick DESIGN DEAD LOADS (kPa) OF MATERIALS CHIPBOARD - 12.7 mm thick - 15.9 mm thick - 19.0 mm thick WALLS AND CLADDING - Solid brick wall (concrete) - 100 mm thick (S.L.D.) - 100 mm thick (N.D.) - Hollow block (S.L.D.) - 100 mm thick - 200 mm thick - 300 mm thick Hollow block (N.D.) - 100 mm thick - 200 mm thick - 300 mm thick - P.C. wall plus glazing - Metal curtain wall - Insulated sheet steel wall (exclude girts) - 38 x 89 wood studs 400 mm -Gypsum wallboard per 10 mm Stone veneer per 25 mm 0.10 0.15 0.15 0.30 0.10 0.15 0.08 2.31 1.96 1.82 2.60 3.50 0.09 0.12 0.14 0.06 0.08 0.11 0.07 0.09 0.11 1.40 1.90 1.10 1.60 2.30 1.40 2.10 2.90 2.40 3.80 0.74 - 1.50 0.250.40 0.05 0.08 0.40 FLOOR FINISHING - Vinyl, linoleum or asphalt tile - Softwood subfloor per 10 mm - Hardwood per 10 mm - Carpeting -Asphaltic concrete per 10 mm - 20 mm Ceramic or quarry tiles on 12 mm mortar bed - Terrazzo per 10 mm - Mastic floor (20 mm) ROOFING - 3 ply asphalt, no gravel - 4 ply asphalt, no gravel - 3 ply asphalt and gravel - 4 ply asphalt and gravel - Asphalt strip shingles - Gypsum wallboard per 10 mm INSULATION (per 100 mm thick) - Glass fibre, batts - Glass fibre, blown - Glass fibre, rigid - Urethane, rigid foam - Insulating concrete CEILINGS - Gypsum wallboard per 10 mm - Tiled ceiling & suspension system, with fixtures, average - 20 mm plaster on lath/furring - Sprayed fire protection, average - Ducts/pipes/wiring allowance (average condition) DECK-SLABS (average condition) - 38 mm deck with - 65 mm N.D. cover" - 90 mm N.D. cover* - 65 mm S.L.D. cover" - 85 mm S.L.D. cover** - 75 mm (or 76 mm) "wide-rib" deck with - 65 mm N.D. cover* -90 mm N.D. cover - 65 mm S.L.D. cover" - 85 mm S.L.D. cover** - 76 mm 'narrow-rib" deck with - 65 mm N.D. cover* - 90 mm N.D. cover -65 mm S.L.D. cover" -85 mm S.L.D. cover" assume 2350 kg/m³ concrete "assume 1850 kg/m³ concrete . 0.07 0.06 0.08 0.10 0.23 0.80 0.24 0.45 0.15 0.20 0.27 0.32 0.15 0.08 0.05 0.04 0.07 0.03 0.06 0.08 0.20 0.40 0.07 0.25 1.95 2.55 1.55 1.90 2.55 3.15 2.15 2.50 2.20 2.80 1.90 2.25 The second storey of an office building consists of a composite steel deck 75mm deep with a 65mm concrete cover (normal density cover). The floor is topped with 3/4" Plywood and 34" hardwood. The composite steel deck It also supports ducts/pipes, wiring, and fireproofing. Due to occupancy, allow a live load of 2.1kPa and a dead load of 1.2 kPa for partitions. a) Determine the total dead load supported by the composite steel deck b) Determine the total factored combined load of ultimate limit states c) Determine the load for serviceability criteria of the following: Deflections are limited to L/360 under live loads or L/240 under total load, whichever governs. STEEL DECKS Steel deck 38 mm deep (up to 0.91 mm thick) (1.22 to 1.52 mm thick) Steel deck 76 mm deep (Narrow-Rib) (up to 0.91 mm thick) (1.22 to 1.91mm thick) Steel deck 76 mm deep (Wide-Rib) (up to 0.91 mm thick) (1.22 to 1.52 mm thick) for cellular deck, add CONCRETE, per 100 mm - 2350 kg/m³ (N.D.) -2000 kg/m³ (slag aggregate) -1850 kg/m³ (S.L.D.) HOLLOW CORE PRECAST (no topping) - 200 mm deep (N.D.) - 300 mm deep (N.D.) WOOD JOISTS (at 400 mm centres) -38 mm x 184 mm joists - 38 mm x 235 mm joists - 38 mm x 286 mm joists PLYWOOD - 11 mm thick - 14 mm thick - 19 mm thick DESIGN DEAD LOADS (kPa) OF MATERIALS CHIPBOARD - 12.7 mm thick - 15.9 mm thick - 19.0 mm thick WALLS AND CLADDING - Solid brick wall (concrete) - 100 mm thick (S.L.D.) - 100 mm thick (N.D.) - Hollow block (S.L.D.) - 100 mm thick - 200 mm thick - 300 mm thick Hollow block (N.D.) - 100 mm thick - 200 mm thick - 300 mm thick - P.C. wall plus glazing - Metal curtain wall - Insulated sheet steel wall (exclude girts) - 38 x 89 wood studs 400 mm -Gypsum wallboard per 10 mm Stone veneer per 25 mm 0.10 0.15 0.15 0.30 0.10 0.15 0.08 2.31 1.96 1.82 2.60 3.50 0.09 0.12 0.14 0.06 0.08 0.11 0.07 0.09 0.11 1.40 1.90 1.10 1.60 2.30 1.40 2.10 2.90 2.40 3.80 0.74 - 1.50 0.250.40 0.05 0.08 0.40 FLOOR FINISHING - Vinyl, linoleum or asphalt tile - Softwood subfloor per 10 mm - Hardwood per 10 mm - Carpeting -Asphaltic concrete per 10 mm - 20 mm Ceramic or quarry tiles on 12 mm mortar bed - Terrazzo per 10 mm - Mastic floor (20 mm) ROOFING - 3 ply asphalt, no gravel - 4 ply asphalt, no gravel - 3 ply asphalt and gravel - 4 ply asphalt and gravel - Asphalt strip shingles - Gypsum wallboard per 10 mm INSULATION (per 100 mm thick) - Glass fibre, batts - Glass fibre, blown - Glass fibre, rigid - Urethane, rigid foam - Insulating concrete CEILINGS - Gypsum wallboard per 10 mm - Tiled ceiling & suspension system, with fixtures, average - 20 mm plaster on lath/furring - Sprayed fire protection, average - Ducts/pipes/wiring allowance (average condition) DECK-SLABS (average condition) - 38 mm deck with - 65 mm N.D. cover" - 90 mm N.D. cover* - 65 mm S.L.D. cover" - 85 mm S.L.D. cover** - 75 mm (or 76 mm) "wide-rib" deck with - 65 mm N.D. cover* -90 mm N.D. cover - 65 mm S.L.D. cover" - 85 mm S.L.D. cover** - 76 mm 'narrow-rib" deck with - 65 mm N.D. cover* - 90 mm N.D. cover -65 mm S.L.D. cover" -85 mm S.L.D. cover" assume 2350 kg/m³ concrete "assume 1850 kg/m³ concrete . 0.07 0.06 0.08 0.10 0.23 0.80 0.24 0.45 0.15 0.20 0.27 0.32 0.15 0.08 0.05 0.04 0.07 0.03 0.06 0.08 0.20 0.40 0.07 0.25 1.95 2.55 1.55 1.90 2.55 3.15 2.15 2.50 2.20 2.80 1.90 2.25

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To determine the loads and criteria for the composite steel deck in the office building well calculate the total dead load total factored combined loa... View the full answer