Foundations Flashcards
The grade shall fall not fewer than ____ within the first ____ away from the foundation.
6”
10’
Impervious surfaces within 10’ of the building foundation shall be sloped not less than ____ percent away from the building.
2
Where lot lines, slopes or other physical barriers prohibit 6” of fall within 10’, _____ or ____ shall be constructed to ensure drainage away from the structure.
drains
swales
The bottom surface of the footings shall not have a slope exceeding ____ unit vertical in ____ units horizontal. Footings shall be stepped where it exceeds this.
1
10
Wood sill plates shall be anchored to the foundation with minimum ____ diameter anchor bolts not spaced more than ___ on center.
1/2”
6’
Anchor bolts shall extend not less than ____ into concrete or grouted cells of concrete masonry units.
7”
Anchor bolts should be located in the middle ____ of the width of the plate.
1/3
There shall not be fewer than ___ anchor bolts per plate section with one bolt located not more than ___ or less than ____ from each end of the plate section.
12”
3 1/2”
On graded sites, the top of any exterior foundation shall extend above the elevation of the street gutter at point of discharge or the inlet of an approved drainage device not less than ____ plus ____ percent.
12”
2
A porous layer of gravel, crushed stone or coarse sand shall be placed to a minimum thickness of _____ under the basement floor.
4”
The sump shall be not less than ___ in diameter or ___ square, shall extend not less than ___ below the bottom of the basement floor.
24”
20”
24”
When do foundations need to be waterproofed?
When foundation walls retain earth and enclose interior spaces and floors below grade.
Foundation walls that retain earth and enclose interior spaces and floor below grade shall be dampproofed from the higher of (a) top of the _______ or (b) ___ below the top of the basement floor, to the finished grade.
Footing
6”
Below grade masonry walls shall have not less than ______ Portland cement parging applied to the exterior of the wall.
3/8” (not required where dammpproofing material is approved for direct application to masonry)
Minimum ventilation for crawl spaces without a Class 1 vapor retarder is _____ square foot for each _____ square feet. The minimum ventilation for a crawl space with a Class 1 vapor restarted is _____ square foot for each ______ square feet.
1 & 150
1 & 1,500
