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Nhbrc Questions 151 to 155

HomeNhbrc Questions 151 to 155

NHBRC QUESTIONS 151 - 155

151)What is the maximum rise of a stair case?
a)100 mm
b)150 mm
c)200 mm
d)300 mm

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152)The minimum width of the stair treads shall be ….. mm and with minimum of ….. mm risers to a maximum of ….. risers?
a)250, 170 , 200 mm
b)150, 120 , 150 mm
c)300, 400, 450 mm
d)None of the above

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153)What is the minimum headspace above a stair case measured vertically from the pitch line to the ceiling?
a)1,5 meters measure vertically from the pitch line
b)2,1 meters measure vertically from the pitch line
c)2,5 meters measure vertically from the pitch line
d)3,0 meters measure vertically from the pitch line

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154)What is the importance of a DPC?
a)To prevent mist & fog into the house?
b)To allow moisture penetration
c)To prevent rising dam through walls
d)All of the above

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155)A strip of approved DPC sheeting 150 mm wide should be placed length wise under the ridge tiles, over lapping the top course of tiling on each side by 25 mm. Lapped ends must be supported underneath and the overlap should not be less than……?
a)75 mm
b)80 mm
c)85 mm
d)150 mm

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