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Nhbrc Questions 156 to 160

HomeNhbrc Questions 156 to 160

NHBRC QUESTIONS 156 - 160

156)All horizontal damp proof courses shall protrude … from the external face of the wall?
a)5mm
b)10mm
c)20mm
d)40mm

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157)When is a damp proof course used on a cavity wall that is prone to rainfall?
a)In higher moisture content conditions
b)In low moisture content
c)During the rainy season
d)All the time

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158)When is damp proof course not required to be provided above all window & door openings in cavity walls?
a)The house is built in dry part of the country (e.g. Musina, Upington etc.)
b)If the roof overhangs by more than 750mm
c)If the distance between the top of the window frame & the wall plate is less than 700mm
d)B & C

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159)Wall ties used 30km from the coastline shall be?
a)Galvanized wire
b)Stainless steel of grade 816
c)Either of the above
d)None of the above

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160)If an electrical conduit pipe is fitted through the DPM, what’s used to fill the openings?
a)A PVC
b)A bituminous felt membrane
c)A polythene plastic
d)Self – adhesive tape

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