Tempo:
28 Establishing the lines of a house
A
if corners are square diagonals are equal outside line of foundation wall saw kerf
B
batter board taut line plumb bob nail 1.2 m (4 ft.) minimum outside line of foundation wall
4m
t.) 2f
(1
3m
(9
ft.)
5 m (15 ft.)
EXCAVATION SIZE AND DEPTH Before excavating begins, topsoil should be stripped and stored for reuse. Some excavated material suitable for backfill may be stored on site and surplus material removed from the site. The depth of the excavation is established during the planning stage, depending on the access to the street, sewer and water services, the profile of the lot, the level of finished grade around the perimeter of the house and the elevation of adjoining properties.
The basement headroom and the elevation of the floor above grade also affect the depth of the excavation. Basement headroom for finished basements must be at least 2 m (6 ft. 7 in.) to the underside of beams or joists. If the basement is to be used as a living space, however, the headroom must be at least 2.1 m (6 ft. 11 in.), the same minimum height as the other finished floor areas. The elevation of the first floor should allow for a minimum distance from finished grade to the beginning of exterior finishing (normally starting at the top of the foundation)
A
if corners are square diagonals are equal outside line of foundation wall saw kerf
B
batter board taut line plumb bob nail 1.2 m (4 ft.) minimum outside line of foundation wall
4m
t.) 2f
(1
3m
(9
ft.)
5 m (15 ft.)
EXCAVATION SIZE AND DEPTH Before excavating begins, topsoil should be stripped and stored for reuse. Some excavated material suitable for backfill may be stored on site and surplus material removed from the site. The depth of the excavation is established during the planning stage, depending on the access to the street, sewer and water services, the profile of the lot, the level of finished grade around the perimeter of the house and the elevation of adjoining properties.
The basement headroom and the elevation of the floor above grade also affect the depth of the excavation. Basement headroom for finished basements must be at least 2 m (6 ft. 7 in.) to the underside of beams or joists. If the basement is to be used as a living space, however, the headroom must be at least 2.1 m (6 ft. 11 in.), the same minimum height as the other finished floor areas. The elevation of the first floor should allow for a minimum distance from finished grade to the beginning of exterior finishing (normally starting at the top of the foundation)
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