Minimum Concrete Wall Reinforcement
For plain concrete wall minimum vertical steel is 0 12 for hysd bars and 0 15 for mild steel bar.
Minimum concrete wall reinforcement. F min 0 0015. Prior to placing the jackets it s important to clean the mortar joints in between the bricks to make sure no debris disrupts the jacket s bonding. Steel area minimum 0 40 of the concrete cross section area equally divided to each side of the wall. 3 the distance between two adjacent vertical bars shall not exceed 3 times the wall thickness or 400 mm whichever is the lesser.
40 x 0 625 inches 25 inches option 2 cut the vertical reinforcement steel bars for the lower storey so that they are flush with the top of that wall. Minimum cover requirements for nonprestressed cast in place concrete construction are given in table 20 6 1 3 1 of aci 318 14 building code requirements for structural concrete. The temperature reinforcement shall not be less than inch at nine 9 inch center to center. Diameter minimum 1 4 diameter of the vertical reinforcement.
Distance 300 mm maximum. Reinforcing bars are placed in a concrete member with a minimum concrete cover to protect it from weather fire and other effects. The minimum ratio of required reinforcement is. The cover required is 2 inches for foundation walls or walls exposed to weather and 1 1 2 inches for walls that aren t exposed.
Strength of reinforced concrete sections what determines the strength of a reinforced concrete section 28 day compressive strength of concrete f c 3 500 or 4 000 psi minimum grade of rebar f. F min 0 002 for f y 40 000 psi s min 0 0018 for f y 60 000 psi for walls. 2 where the minimum area of reinforcement a s vmin controls in design half of this area should be located at each face. F min 0 0025.
Minimum reinforcement for walls vertical reinforcement. For rc wall minimum vertical reinforcement is 0 4 of c s in plain concrete wall transverse steel is not required in rc wall transverse steel is not. Y usually grade 60 60 000 psi yield strength amount of rebar a. As a minimum 4 rebar 1 2 inch is spaced vertically at 36 inches on center continued to within 8 inches of the top of the wall placed on the tension side the inside face of the wall.
Detailing of reinforcement is 456 guidelines. The jackets are placed on both or just one side of the wall after the plaster is removed from the wall. Steel area minimum 0 20 0 40 of the concrete cross section area.