Enter the height feet.
Minimum concrete retaining wall thickness.
For more on designing bearing walls refer to chapter 11 of aci 318 19.
Bottom retaining wall loads the following figure shows all the loads applied to the cantilever retaining wall where.
V l x h x t.
1 2 3 4 5 6 6.
Enter the thickness inches.
Section 11 3 1 1 states that the minimum thickness shall be based on the shorter of either the unsupported wall height or length.
Bed joints of the starting course over the concrete foundation may be between 1 4 and 3 4.
Enter the length feet.
Top thickness 18 in.
Minimum thickness of walls 4 1 bearing walls.
Retaining walls footings or any other volume of concrete.
Thus it appears that in the example you provided the minimum wall thickness is 6 inches.
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.
Ubc recommends minimum thickness of bearing wall to 1 25 supported height or length whichever is shorter or not less than 102mm.
When a taller wall or a higher level of soil or both come into play the thickness should increase to 10 inches.
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.
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.
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.
All head and bed joints shall be 3 8 thick.
Ubc specified minimum thickness of exterior basement wall and foundation wall to be 191mm.
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.
B short retaining walls vertical walls up to about 3m in height are usually built as shown in figure 1 b.
