Concrete mix for footing to be 1 part cement to 2 5 parts sand to 3 5 parts gravel with a maximum of 7 5 gallons of water per sack of cement minimum f c 2 500 psi.
Structural detail for a 8 concrete block wall.
The reader is referred to tek 3 11 concrete masonry basement wall construction tek 19 3b preventing water penetration in below grade concrete masonry walls and ncma s basement manual for more detailed design and.
This information bulletin provides general requirements and specifications for the construc.
Concrete block units shall conform to astm c90.
This tek contains details for various types of concrete masonry foundation walls with accompanying text as appropriate.
Foundation all concrete block walls must rest on a sturdy foundation of poured concrete.
The wall is built to scaffold height or to a bond beam course to a maximum of 5 ft 1 520 mm.
While the term is not found in codes or standards it is common industry language to describe the process of constructing walls in shorter segments without the requirements for cleanout openings special concrete block shapes or equipment.
The depth and size of the foundation will vary depending on the size of the concrete block wall and the weight it must support but a typical freestanding wall requires a foundation that is about twice as wide as the wall itself and which extends about 1 foot down below the frost line.