9.12.3.1. Placement of Backfill

 9.12.3.1. Placement of Backfill 

This Article requires #backfill to maintain the #structural integrity of the #foundation. If a foundation wall is designed to be laterally supported at the top by the floor system and backfilling is to be carried out before the floor is in place, the wall may fail unless it is temporarily supported. One method for providing temporary support is shown in Figure 9.12.-7.

Care must be taken during backfilling to avoid damaging the drainage tile, the foundation wall, any externally applied thermal insulation, and #dampproofing or #waterproofing membrane.

Quoted from Illustrated Users' Guide - NBC2015

#foundationwall #floorsystem #drainagetile #thermalinsultaion

Depth of #foundations

Foundation #depths for #decks and other accessible exterior #platforms can be less than the minimums in NBC Table 9.12.2.2. if the deck is not more than one storey and not more than 55 m2 (590 ft.2) in area, the distance from the #ground to the underside of the #joists is 600 mm (2 ft.) or less, the deck does not support a #roof and its movement will not affect the structure it serves (Figure 9.12.-6).

Quoted from Illustrated Users' Guide -- NBC2015

9.12.1.1. Removal of Topsoil and Organic Matter

 9.12.1.1. Removal of Topsoil and Organic Matter 

This Article requires the removal of #topsoil and #organic matter from unexcavated areas.

 

This will help to make the space beneath a building inhospitable to #insect #pests and #vermin, and to keep it from generating objectionable #odours that might migrate into the structure above (see Figure 9.12.-1). 

For an additional level of insect resistance where #termites are known to occur, #stumps, #roots and other wood #debris must be removed to a depth of at least 300 mm (12 in.) in order to protect the structure.

Quoted from Illustrated Users' Guide -- NBC2015

9.10.13.15. Doors between Garages and Dwelling Units

 9.10.13.15. Doors between Garages and Dwelling Units

This Article requires that #doors between a #garage and a #dwelling unit be constructed so as to reduce the passage of exhaust #fumes and #gasoline #vapours into habitable areas. To reduce this risk, any door from the garage to the house must be #weatherstripped and have an automatic door closer to keep the door from being accidentally left open (Figure 9.10.-22). Since there is always some leakage past the weatherstripping under wind conditions, doors from spaces where people sleep should not have a direct #entrance to a garage.

Quoted from Illustrated Users' Guide - NBC2015

#exhaustfumes #gasolinevapours #doorcloser #habitable