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151.

The angle which the line of nosing of the stair makes with the horizontal, is called

A.	riser	B.	flier
C.	soffit	D.	pitch or slope

152.

In stairs, the vertical portion of a step providing a support to the tread, is known as

A.	riser	B.	flier
C.	soffit	D.	pitch or slope

153.

The size of a step commonly adopted for residential buildings is

A.	250 mm x 160 mm	B.	270 mm x 150 mm
C.	300 mm x 130 mm	D.	350 mm x 100 mm

154.

In residential building, the average value of stair width is

A.	600 mm	B.	700 mm
C.	800 mm	D.	900 mm

155.

The width of landing should be

A.	equal to	B.	less than
C.	greater than

156.

The pitch of stair should never exceed

A.	20?	B.	25?
C.	30?	D.	40?

157.

In designing a stair, the sum of going (in cm) and twice the rise (in cm) should be equal to

A.	40	B.	50
C.	60	D.	70

158.

In designing a stair, the product of going (in cm) and the rise (in cm) should be equal to

A.	300	B.	350
C.	400	D.	450

159.

An open-newel stair consists of two or more straight flights arranged in such a manner that a clear space occurs between the backward and forward flights.

Agree

Disagree

160.

In wooden stairs, the thickness of tread is adopted as

A.	28 mm	B.	38 mm
C.	48 mm	D.	58 mm