Minimum Concrete Wall Thickness

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.

Minimum concrete wall thickness.

Walls thinner than 250mm can incur concrete compaction problems due to the congestion of reinforcement particularly near openings. 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. Design process includes proper assumption of structural element sizes and then check the suggested dimensions to make sure that it meets the requirements of the design. Section 11 3 1 1 states that the minimum thickness shall be based on the shorter of either the unsupported wall height or length.

This equals 0 89147 inches or almost 0 9 inch minimum pipe wall thickness. 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. Nonetheless it is possible to use smaller thickness for parapet wall if it is reinforced to resist earthquakes. The thinner applications would include drives walkways slabs and footers just to name a few.

Reinforced circular pipe class 1500d to class 3750d astm c 76 aashto m 170 wall b. What is the minimum thickness for concrete. While a minimum thickness of 150mm for a wall is possible 180 250mm is recommended to aid detailing and construction. Thus it appears that in the example you provided the minimum wall thickness is 6 inches.

For more on designing bearing walls refer to chapter 11 of aci 318 19. If a safety factor of two was required the minimum thickness of 0 7752 x 2 would give a minimum wall thickness of 1 5504 inches. A 0 7752 inch minimum thickness multiplied by a 15 percent tolerance or 115 becomes 0 7752 x 1 15. When a taller wall or a higher level of soil or both come into play the thickness should increase to 10 inches.

Inside diameter inches inches wall thickness class 1 class 2 class 3 4 6 8 1 10 1 1 12 1 1 1. The minimum thickness of parapet wall can be assumed to be 203mm 8 inch and its height should not be larger than three times the wall thickness. Thickness of non load bearing masonry walls. Minimum thickness of concrete slab beam column foundation and other structural members is selected to meet the design requirements as per standard codes.