A 3-m 150 mm CHB wall rests on a 600 mm thick concrete footing. The CHB wall weighs 3.3 kN/m2 and will carry a construction live load of 20 kN per meter length of wall. 24 kN/m³, 18 kN/m³,,fc' = 28 MPa, fy = 248 MPa. Steel cover to bar centroid is 90mm.
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- Compute the wall stress in a 48-in. steel pipe 1/4 in. thick under a head of 400 ft oil (sp gr 0.82)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 , 400MPA 300 mm X 450 mm exterior beam is reinforced with 2 – Ø20 mm and 1 - Ø25 mm bars on the first layer of tension reinforcement (larger bar is at the middle), 2 tension reinforcement, 3 – Ø25 mm for compression reinforcement and Ø12 mm for stirrups. From analysis the depth of the tension zone is 344 mm, if the tension steel has a yield strength of 420 MPa and the compression steel has a yield strength of 414 MPa. Determine the following using all the NSCP provision (larger bar always governs the spacing) to check and layout the beam: Ø25 mm on the second layer of - A. The compressive stress in the concrete B. The depth of compression block C. Ultimate Moment Capacity of the beam
- feu = 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.Design a uniform distribution of vertical and hori- zontal reinforcement for the structural wall shown D = 40 k, L = 25 k 150 k in Fig. P18-2. Your design must satisfy all of the ACI Code strength requirements, as well as the requirements for minimum reinforcement percent- age and maximum spacing. The given lateral loads are strength-level wind forces, considering both direct lateral forces and the effects of any torsion. 12 ft D = 70 k, L= 60 k 110 k Use a load factor of 1.0 for the wind load effects. h = 10 in. 12 ft Assume the wall is constructed with normal-weight concrete that has a compressive strength of 4000 psi. Assume all of the steel is Grade 60. 20 ft Fig. P18-2The reinforced concrete cantilever retaining wall is made with 3000 psi normal weight concrete and reinforced with Grade 60 galvanized steel. the main reinforcement rests flexural stresses in the stem and is specified as #7 bars every 18 inches along the length of the wall. The distribution seal distributes stresses along the length of the wall and is specified as #4 bars at 12 I spacing. The concrete cover is 1.5 everywhere. Calculate the developmental length for the main reinforcement using the basic equation (ACI 318 -19: 25.4.2.4). Assume no transverse reinforcement Ktr-->0). Is the main reinforcement embedded deeply enough in the footing to fully develop its yield strength in tension?
- A reinforced concrete circular water tank underground of 16 m in diameter, 4m depth water, the bottom slab is fixed wall, f=30 MPa, f-420 MPa, Ysoil=1.75 ton/m', Ø=35°, thickness of wall (t) =0.2m. Use the ultimate strength method. Compute: - The tensile strength when the water and soil presents at point A. - The vertical reinforcement (inside and outside). Free 16 m 2m 3m A FixedDesign a 33ft long reinforced concrete shearwall with 15ft height and 8" thickness. Use fc' = 3000 psi and fy = 60000 psi. The shear wall is experiencing a factored shear load, Vu = 520kips at the top of the wall. Assume zero normal load. Use 12mm diameter bars for vertical and horizontal shear reinforcing and 25mm bar for vertical flexural reinforcing. Avoid rounding off in the intermediate solutions, apply proper rounding off in your final answers. Blank 1Design a 33ft long reinforced concrete shearwall with 15ft height and 8" thickness. Use fc' = 3000 psi and fy = 60000 psi. The shear wall is experiencing a factored shear load, Vu = 520kips at the top of the wall. Assume zero normal load. Use 12mm diameter bars for vertical and horizontal shear reinforcing and 25mm bar for vertical flexural reinforcing. Avoid rounding off in the intermediate solutions, apply proper rounding off in your final answers.
- Design the load bearing reinforced concrete wall shown if fc' = 3000 psi and fy = 60000 psi. For horizontal and vertical shear reinforcement: Use #4 rebar = 0.5" = 12 mm For vertical flexural reinforcement: Use #9 rebar = 1.128" = 28 mm Vu at the top = 100 kips Lw = 8 ft, hw = 15 ft, thickness of shear wall = 8 inA Concrete Masonry Unit Wall is constructed as follows: • Length 8000 mm Height 4000 mm There are no doors or openings Standard CMU are reinforced with . 20M vertical rebar @1600 o/c • 2 additional 20 m bars at the ends Length CMU Block Wall . There are 1 bond beams at top and bottom reinforced with 1 20M bars • Blocks are 190 high, plus the 10mm mortar Calculate the total volume of rebar required in kg. HeightA hollow circular steel column is subjected to a compression load of 380KN. The column has a length of 2.4m and an outside diameter of 187.5mm. (a.)Compute the minimum required wall thickness based on an allowable compressive stress of 48MPa. (b.)If wall thickness is 20mm and allowable compressive stress is 50MPa, compute the allowable compression load.