Pier and column footing requirements.
Minimum wall thickness 4 concrete block.
The 4 100 mm form cannot be used below grade as a foundation wall.
Concrete masonry units cmus are manufactured in a variety of sizes.
The 4 100 mm form may be used for above grade walls up to a maximum of 10 3 0 m.
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.
For masonry or concrete construction the minimum foundation wall will be 6 inches.
For example for an 8 in.
The minimum actual thickness of a load bearing masonry wall shall be not less than 4 inches 102 mm nominal or 3 3 8 inches 92 mm actual thickness and shall be bonded integrally with piers spaced in accordance with.
For walls not exceeding 3 0 m in unsupported height.
25 mm thickness measured perpendicular to the face of the wall of ceramic fiber in the joint can be used in walls with fire resistance ratings up to 3 hours while a 2 in.
The thickness of the wall they create.
All load bearing walls shall be placed on continuous concrete footings placed integrally with the exterior wall footings.
If load bearing masonry wall is strengthened or stiffened by reinforced concrete floors or masonry cross walls at a distance not greater than 3 65m 12 ft then it is possible to adopt thickness of 304 8mm 1 ft for maximum wall height of 21 33m 70 ft.
The minimum reinforced concrete footing thickness will be 6 inches or 1 1 2 times the length of the footing projection from the foundation wall whichever is greater.
Foundation wall thickness and required lateral support 1 except as required in sentence 2 the thickness of foundation walls made of unreinforced concrete block or solid concrete and subject to lateral earth pressure shall conform to table 9 15 4 2 a.
203 mm limestone aggregate concrete masonry wall with a maximum control joint width of in.
4 2 exterior basement wall and foundation wall.
51 mm thickness can be used.
For instance a 6 cmu is nominally 6 deep while a 10 cmu is nominally 10 deep.
The concrete block is designed so that when the wall or edifice is installed rebar can be placed within the core of the cinder block to reinforce the structure these hollow cores which come in sets of either two or three take up approximately 50 percent of the block s total volume.
Minimum thickness of walls 4 1 bearing walls.
Ubc recommends minimum thickness of bearing wall to 1 25 supported height or length whichever is shorter or not less than 102mm.
Minimum foundation wall and wall footing thickness.
They are identified by their depth i e.
Ubc specified minimum thickness of exterior basement wall and foundation wall to be 191mm.
When a taller wall or a higher level of soil or both come into play the thickness should increase to 10 inches.
In some regions an 8 200 mm concrete core is the minimum allowed thickness for below grade walls.
