Minimum Concrete Retaining Wall Thickness

Ubc recommends minimum thickness of bearing wall to 1 25 supported height or length whichever is shorter or not less than 102mm.

Minimum concrete retaining wall thickness.

Enter length and height in feet and thickness in inches. Minimum thickness of walls 4 1 bearing walls. As soon as you go higher or have greater depths of soil pushing against the wall you need to increase the thickness to 10 inches. All head and bed joints shall be 3 8 thick.

Bed joints of the starting course over the concrete foundation may be between 1 4 and 3 4. Wall stem dimensions wall foundation dimensions width 1 ft strip width 1 ft strip height 13 5 ft length 9 75 ft thickness 8 in. In general poured concrete basement walls that are 8 feet tall or less and have no more than 7 feet of soil pressing against them from the outside function well at a thickness of 8 inches. Enter the height feet.

Poured concrete foundation walls that are less than 8 feet tall and have soil outside that is 6 or 7 feet deep against the wall can often be 8 inches thick and function quite well. 4 2 exterior basement wall and foundation wall. Enter the thickness inches. Enter the length feet.

These consists of a concrete or masonry wall of uniform thickness vertical wall reinforcing and transverse footing reinforcing are all designed for the lateral shear and cantilever bending movement plus the vertical weights of the wall footing and earth fills. 1 2 3 4 5 6 6. For more on designing bearing walls refer to chapter 11 of aci 318 19. B short retaining walls vertical walls up to about 3m in height are usually built as shown in figure 1 b.

Aci 530 1 05 section 3 3b nospecialinspectionisrequiredforretain ingwallsupto6feetinheight. Ubc specified minimum thickness of exterior basement wall and foundation wall to be 191mm. V l x h x t. Thus it appears that in the example you provided the minimum wall thickness is 6 inches.

Retaining walls footings or any other volume of concrete. When a taller wall or a higher level of soil or both come into play the thickness should increase to 10 inches.