Rebar Placement In Concrete Retaining Wall

If too much water collects behind the wall it will saturate the area and compromise the structure. The placement of reinforcing steel especially the vertical ones should be clearly marked i e. Rebar placement in walls rebar is placed horizontally and vertically in the wall in a grid pattern.

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Off center or towards interior exterior or centered in the wall.

Rebar placement in concrete retaining wall.

Make sure to evaluate how the area drains before you put in the retaining wall. The depth to the bottom of the base slab should be kept at a minimum of two feet. The concrete cover is the thickness or amount of concrete placed in between the reinforcing steel and surface of the concrete member. Allow the footings to fully cure before building the concrete block wall.

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. Placement of rebar in footings. Install the additional lengths of rebar where the vertical rebar uprights need to extend to the top of the concrete block wall. If the load that lies behind the retaining wall is within 3 feet of the top the structure it will start to lean and eventually topple over.

In general the top of the stem of any cast concrete retaining wall should not be less than 12 inches for the proper placement of concrete. Placement of reinforcement in footing requires activities such as checking for concrete cover location reinforcement tying and supports etc. Strength reduced from 136 7 to 114 9 in kips. 2 5 clear to strength steel 5 12 rather than the designed 5 10 bending strength of the section has been reduced by about 16.

Lap the additional rebar to the adjacent bar for a minimum of 18 inches and secure with tie wire. Pour the footing concrete. One line lies along the centerline of the footing and the others are spaced 8 inches on center from the adjacent bars. It includes five lines of bars running parallel to the length of the wall.

Strength of reinforced concrete sections amount of rebar a s the project calls for 5 10 and 5 12 are used. Bar bending schedule the designer should specify the lap splice type and lengths for every section of the wall where splicing is anticipated. Concrete retaining wall footing size. The bottom layer of rebar usually is 3 inches above the ground supported by rebar chairs or concrete bricks.

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