A two spans continuous concret beam is to be Supported by three concreted columns spaced (8,50 m) on centers. A service live load of (18 kN/m) is to be carried in addition to the weight of the beam A limited cross sections area to be used with (b=400mm, (h=600mm) with two layers reinforcement, Find the area of reinforcement at section (b-b) Use fy=280 μPa and fc = 21 MPa, in Assume columns width=400 mm.
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- Design economical spacing of 10 mm diameter stirrups for the beam which carries the loads shown. Design shear reinforcement of prestressed beam with the following properties listed. Properties: f’c = 28 MPa fy = 276 MPa Aps = 800 mm2 Ds = 10 mm Dm = 18 mm fse = 800 MPa fpu = 1500 MPa fpe = 860 MPa Pe = 250 kNス F. reinforced concete structure is shown The floor framing plan oF in the figure. The beams are 280 mm wide and S20 mm deep, and the slob is 110mm thick an edditional (super impes) veight,1 and live lo ad of OTher than conerete weight, the floor subjected other to Is dead load of 3k Pa si2 k Por. Unit weight of concrete is 23.5 kN/m® le Determine the total uniform load on beam DEF and ABC axial load 20 Determme the total on columns A and B,D an) E 2Sm 티 2.Sm 6.2m 6.2mProblem: Design the reinforcement of a rectangular beam to carry a factored moment of 272 kN.m. The beam width is 250 mm, effective depth 400mm. Use fc' = 20.7 MPa, fy = 345 MPa, d' =60 mm. CIVIL ENGINEERINCO REINFORCED CONCRETE DESIGN
- Q1/The area of the reinforcement for a rectangular reinforced beam is 1991mm². The width of the section is 250mm and the effective depth 590mm. The concrete compression strength is 21MPa and the yielding strength of the reinforcement is 420MPa. Is this section suitable to the following loads: 79 KN.m dead load moment and 173 KN.m live load moment.A rectangular concrete beam has a width of 300mm and an effective depth of 550mm. The beam is simply supported over a span of 6m and is used to carry a uniform dead load of 35kN/m and uniform live load of 40kN/m. Assume fc= 21MPa and fy= 312MPa. Compression reinforcement if necessary shall be placed at a depth 80mm from the outermost compression concrete. Which of the following most nearly gives the required number of 25-mm tension bars?A concrete beam of length 5.5m is built monolithically with the slab. Originally, the beam has a width of 300mm and effective depth of 400mm. If the flange of the slab is 150mm and the total area tension steel bars is 500 sq.cm., determine the design capacity of the beam structure. The concrete has a compressive strength of 25 MPa, steels' yield strength is 420 MPa. and the beam's clear span from its adjacent beams is 2.15m.
- A reinforced concrete beam section is 375 mm wide and 500 mm deep. The beam carries service live load of 105 kN-m and a service dead load of 210 kN-m. Use f’c = 21 MPa and fy = 415 MPa. If the compression steel is found necessary, the effective concrete cover to be used for the said bars will be 65 mm. At ultimate condition, U = 1.2 D + 1.6 L. Use a strength reduction factor of 0.9. a) Determine the required nominal design moment for the section in kN-m. b) Determine the number of pices of 28 mm diameter tension reinforcements required for the section. c) Determine the number of pieces of 28 mm diameter compression reinforcements required for the beam considering the effect of the concrete displaced by the bars.a concrete floor slab 100mm thick is cast monotholic with concrete beams 2.0 m on centers. the beams have a span of 4.0m, web width of 259 mm and overall depth of 50 mm. the tensile reinforcement consists of 6-⌀20 mm bars in two rows with 25mm vertical clear spacing. use material strengths f'c=21MPa and fy=415MPa. calculate the ff considering a T-geometry: 1. effective flange width of an interior beam in mm 2. depth of uniform stress block at ultimate stage in mm to the nearest whole number 3. tensile steel strain compatible strain of 0.003plz, solve all the parts of this problem. Plz, use ACI Code. Reinforced Concrete Design-1 A fixed ended beam with span length of 24′ and cross-section of 15ʺ x 24ʺ is subjected to uniformly distributed load is shown in figure 1. Unform service dead load is 1k/ft and uniform service live load is 1.4 k/ft. Taking ?c = 3??? and ?y = 40???, a) Detail the reinforcement using #6 bar only, and also curtail the steel ensuring development length requirements. b) Show all your calculations in the form of neat and clean drafting.
- an exterior beam has 300 mm and a height of 600 mm, it is reinforced with 5-p25 mm bars for tension which is laid out according to the code requirements. the depth of the tension strain of the beam is 353 mm. of the steel has a yield strength of 414 mpa. determine the following: Compressive strength of the concrete Maximum steel ratio Ultimate moment capacity of the beam3. A reinforced rectangular concrete beam having a width of 300 mm, effective depth of500 mm, fc’ = 24 MPa, fy = 415 MPa, 4 - 28 mmɸ, d’ = 65 mm. Present the following (a) actual steel ratio (b) maximum steel ratio (c) a(d) c (e) check if steel yields (f) ?steel(g) type of failure (h) reduction factor (i) moment capacityA rectangular beam has a width of 269mm and an effective depth of 600mm. It is reinforced with 4-36mm bars. The compressive strength of the concrete is 28MPa and the yield strength of the steel is 285MPa. The depth of the concrete stress block is ___.