Design a reinforced concrete beam that has a rectangular cross section with a width b =...
Problem 3 (5 points) A rectangular concrete beam of width b 24 in. is limited by architectural considerations to a maximum total depth h - 17 in. It must carry a design moment demand, M 400 kips-ft. Design the flexural reinforcement for this member. Use compression steel if needed. The concrete material has compressive strength of fe- 4 ksi. The steel conforms to ASTM A615 Gr. 60. Select reinforcement to provide the needed areas and show a sketch of your...
2. A beam with the following cross section has to be designed to resist factored positive moment demand, Mu, equal to 1500 kip-in. Due to architectural reasons, the dimensions of the section are pre-defined as below. Also, only #8 and #9 bars can be used as longitudinal reinforcement and #4 bars as transverse reinforcement. The specified cover is 2". The compressive strength of the concrete is 4000 psi and grade 60 is used for the steel bars. The cross section...
15 points 9. A rectangular concrete beam of width b=24 in. is limited by architectural considerations to a maximum total depth h=16 in. It must carry a total factored load moment Mu 400 k-ft. Design the flexural reinforcement for this member, using compression steel if necessary. Allow 3-in, to the center of the bars from the compression or tension face of the beam. Material strengths are fy=60 ksi and fc=4 ksi. Select reinforcement to provide the needed areas, complete necessary...
reinforced concrete design , ACI code Shear Strength of Flexural Members Design for shear forces The simply supported beam shown is subjected to ultimate (factored) distributed and concentrated loads 1. Determine the shear capacity of concrete at the critical section according to ACI318-14 detailed method in Table 22.5.5.1. Design the shear reinforcement and determine the locations on the beam shear force diagram where this shear reinforcement should be placed. 2. 3. Determine the locations within the beam where minimum shear...
A rectangular steel-reinforced concrete beam supports a uniformly distributed load of 875 lb/ft (including the beam weight) for a span of 24 ft. The breadth of the beam is 12 in. Concrete with a specified compressive of 3000 lb/sqin and grade 60 steel for tensile and web reinforcement are specified. Four longitudinal tensile bars are to be used. If required, No. 3 stirrups will be used. Determine the minimum effective depth of the beam section (Round to the nearest inch...
A rectangular reinforced concrete beam of span 16 ft supports a concentrated load of 40 kips at mid-point of the beam and a uniformly-distributed load of 4 kips/ft over the entire span. Given: (a) The breadth of the beam is 18 inches. (b) Concrete compressive strength, fc, is 3500 psi. (c) Rebar is Grade 40 steel i) Determine the maximum moment and maximum shear acting on the beam. ii) Determine the minimum effective depth 'd' of the beam section (rounded...
A rectangular reinforced concrete beam of span 16 ft supports a concentrated load of 40 kips at mid-point of the beam and a uniformly-distributed load of 4 kips/ft over the entire span. Given: (a) The breadth of the beam is 18 inches. (b) Concrete compressive strength, f 'c, is 3500 psi. (c) Rebar is Grade 40 steel i) Determine the maximum moment and maximum shear acting on the beam. ii) Determine the minimum effective depth 'd' of the beam section...
27.2 Much as in Exercise 27.1, a rectangular steel-reinforced concrete beam supports a uni- formly distributed load of 4.5 kip/ft (including the beam weight) for a span of 28 ft. The breadth (b) of the beam is 16 in. The effective depth (d) of the beam section was rounded a compressive strength (f) of 4000 Ib/in2 and grade 60 steel for tensile and web reinforcement are specified. Six longitudinal tensile bars are to be used. Specify the gange number of...
A reinforced concrete beam shown in Figure below is 15-in. wide and has effective depth of31 in. The factored loads are shown. (The factored uniform load includes the weight of the beam). Design the web reinforcement using the Vu diagram shown in the Figure (for a symmetric half). Assume No. 3 stirrups,fc '-4000 psi and fy=fyt-60000psi. 100 kip 100 kip d-31 in. 15 ft clear span As s) 102.5 kip se 2.5 ki @y、阪、もw cl.* 3..-K: ps A reinforced concrete...
A rectangular concrete beam measures 12 inches wide and has a depth of 26 inches. The centroid of the tension rebars is located 4 inches from the tension surface of the beam. Use fy = 60 ksi f’c = 3 ksi, compressive failure strain of concrete = 0.003. (A) Find the required tension rebars As to carry Mu = 5,700 kips-in. Show that the steel ratio does not meet the ACI requirements. (B) What can you do to meet ACI...