2- The floor system shown above design to support service live load=4 kN/m? and total dead load = 10 kN/m?. Can the column (B) of dimension and detail shown below support the ultimate load of this slab and 1800 kN from upper stories. Assume: the column is short tied, f = 30 MPa and fy = 400 MPa. rcover for all side =40mm 4 0 25 mm O 10mm@400mm 400 mm 400 mm
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- A rectangular bear has a wish of 300mm and a total depth of 650mm , calculate the area of steel reinforcement repral Take, M. 360kN.m f30 MPa and , 400MPWater tank Sth Floor Ath Floor 3rd Floor 2nd Floor 1st Floor Column C1 Ground Floor Figure la. (3D View) Secondary beam Column C1 Activate 1 Go to Settin Figure 1b. (Plan) 6.2 Span L" in metre Height (H1) in metre Live Load on the slab (kN/m2) WKN) E (Concrete) MPa E (Truss) GPa 3.135 7.68 28.00 276 186 Slab thickness in 'mm' 162 4814 Truss Area (mm2) Q2. Moment Distribution Method (Continuous Beam) For continuous beam CDEF. a) Find the degree of Indeterminacy. b) Using Moment Distribution Method, Draw B.M.D and S.F.D and find reactions at all supports.Design Slab DEGH of the floor system shown below. Dead load pressure including the slab's weight is estimated at 5.3 kPa while live load pressure is 2.4 kPa. Use fc' = 21 MPa and fy = 345 MPa. The supporting beam is 350 mm x 500 mm. Use 12mm diameter bars. 6m A B 6m C 2.6 m D 2.6 m 2.6 m J E H K LL F I L
- Wood planks are used on each working level. The deck width/bearer span is 5 ft.. The bearers and posts are standard pipe and the pipe material is A36 steel with a yield stress of 36,000 psi and modulus of elasticity of 29,000,000 psi. Bearers are to be located at a vertical spacing of 10 ft (largest, lowest post height). Posts are to be 7 ft oc (plank length) parallel to the building wall and 5 ft apart (bearer length) perpendicular to the building wall. There are four working levels and the anticipated scaffold loading will be med duty. A. Assuming the ultimate bending strength of the planks is 3,800 psi (apply a 4:1 F.O.S.), determine the required minimum plank thickness to the nearest 100th. B. Based on the bearer material provided, what is the minimum pipe size that can be safely used? See Appendix 2 in your textbook for steel pipe properties. C. Based on the post material provided, can a 2” standard pipe be used safely? Be sure it satisfies buckling stress conditions only.Q2// A floor system consists ofconcrete slab supported by continuous beam h = 140mm , bw = 300mm,d = 550mm, f 28MPA, fy = with: %3D 420MPа. Determine the steel reinforcement required at mid span of interior beam to resist service dead load moment Ma = 320KN.m and service live load moment M = 250 kN.m %3! %3D 8m + 3m 4 3m 3m 1-1Determine the maximum live load that the beam can carry if the beam depth is 600mm and beam width is 300mm. The dead load is 32 kN/m. The stirrup size is 12mm, the top bars are 2-20mm and the bottom bars are 5-32mm. The clear distance between layers of bottom bars is the bar size, 32mm. Use fc' = 28 MPa, Grade 60 reinforcements and concrete cover of 50mm. WDL = 32 kN/m (INCLUDING BEAM WEIGHT) WLL = ?? kN/m Wu kN/m 7.5m 600 od 300
- A rectangular beam 250 mm wide, 500 mm deep is reinforced at the bottom with d-20-mm-dismeter bars and at the top with 2-16-mm bars. Concrete cover to bar centroid at the top is M0 mm and at the bottom is 70 mm. Use concrete strength r'e-21 MPa und steel yield strength fy 415 MPa for 20- mm bars and fy= 275 MPA for 16 mm bars Detenmine the design moment capacity n kN m of the beam in negative bending. A 40.06 O45.07 C. 42.70 D47.5522² 12" 4#8 NWC. fe= 3000 psi, Grade 60 steel Mer=? (b) If M=50 (c) & Mn = ? ft-kips fc & fs = 1feu = 40 MPa Cover = 3smm fy = 500 MPa fy = 250 MPa Preferred link size = 10mm Question 2 Design the reinforcement for the following one-way slab: Slab thickness,h= %3D 160 mm Design Mid-span Moment, M = 35 kNm Preferred bar sizes = main bar: 12mm; distribution bar: 10mm Q2a. Calculate the steel area required (in mm2per m width). Q2b. Provide main bars and distribution bars.
- Situation #2 A concrete co lumn has a diameter 4 300 mm. The column has 6 6teel rinforcing bars. Each renforcing bar has a crocs-sectiomal area 4 J0o mm2. The column is I150m lorg and has a load 17 1,370 kn applied to a igid steel plati af the top y the column. The plati distributes the load evenly over the 4 the co lumn.) tumn) top E,- 300 GPa ard Ec=arGPa Find the sfress in the &feel ard in the concrete ard the defomation urder the load.Reinforced Concrete Design Determine the required spacing of 2 legged 12mm diameter stirrups at a distance "d" and "2h" from the top of rafter CD. Use b=300mm, d=625mm, h=700mm, fc'=35MPA, Grade 420 rebars.column is 600mmx600mm. Use simplified calculation and National Structural Code of the Philippines (NSCP 2010) 85 N/m 75 k/m 1-70 85m ir 88M 8 8mDate: Practice Problem 1 Given the following girder properties: bne lalxA ben Properties A = 11500 mm2 y = 266x106mm* ly = 45x106mm* d. = 350 mm %3D bf = 250 mm F, = 248 MPa Fb = 148 MPa F, = 99 MPa tf = 16 mm tw =10 mm a) Find the Web Shear Capacity b) How much is the horizontal shear capacity (kN) at the neutral axis? c) If the girder was used as an 8-meter-long simple span carries equal concentration dead load, P at every quarter points and a uniform load of 12.2 kN/m, determine the load P based on shear capacity. d) Find the maximum shear stress if it is used as a 8 m beam simply supported at the left end and 2 m from the right end which carries a total uniform load of 45 kN/m.