9.13.2.1. Required Dampproofing

 9.13.2.1. Required Dampproofing

This Article indicates where #dampproofing is required. Dampproofing is applied to #foundation walls to seal the small #pores that are always present in #concrete and #parging to reduce the #capillary water migration through concrete, parging and masonry block. Dampproofing does not provide #waterproofing, and should not be confused with waterproofing 

Quoted from Illustrated Users' Guide - NBC2015

The control of moisture

 The control of moisture

There are four sources of #moisture associated with #foundations:

 

(1) surface water, 

(2) soil moisture,

(3) groundwater, and 

(4) construction materials moisture. 

Surface #water from #rain and #snow-melt is controlled through the use of #eavestroughing and #grading. 

Soil moisture, in the form of water or water #vapour, is controlled by #dampproofing materials and #drainage.

 

Where the #groundwater table is high enough to cause hydrostatic pressure against the foundation, it is controlled by #waterproofing combined with a structural design capable of resisting water pressures. 

Construction moisture, principally water in concrete, is best controlled by allowing adequate #curing and drying time before enclosing.

Quoted from Illustrated Users' Guide - NBC2015

The Control of Moisture

 The Control of Moisture

The control of #moisture transfer through #foundations is needed to prevent damage to the interior finish material and #basement contents, and to protect the long-term integrity of the #building structure. The measures that are used to control moisture transfer through foundation walls are also intended to control indoor #humidity levels and contribute to the reduction of soil gas and #radon entry into #basements, thereby contributing to a healthy interior environment.

#soilgas

Quoted from Illustrated Users' Guide - NBC2015

9.12.4.1. Support of Footings

 9.12.4.1. Support of Footings 

This Article addresses #trenching below the #footing that is required for services. It requires that the soil in the trench be compacted by tamping to the footing base, or be filled with concrete having a strength of at least 10 MPa (1 400 psi), as illustrated in Figure 9.12.-8.

Quoted from Illustrated Users' Guide - NBC2015