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49.

Minimum spacing of vertical stiffeners is limited to
where d is the distance between flange angles

A.	d/4	B.	d/3
C.	d/2	D.	2d/3

50.

The maximum spacing of vertical stiffeners is
where d is the distance between flange angles

A.	1.33d	B.	1.25 d
C.	1.5 d	D.	1.75d

51.

The range of economical spacing of trusses varies from

A.	L/3 to L/5	B.	L/4to2L/5
C.	L/3 to L/2	D.	2L/5 to 3L/5 where L is span

52.

The maximum permissible span of asbestos cement sheets is

A.	650 mm	B.	810 mm
C.	1250 mm	D.	1680 mm

53.

Normally, the angle of roof truss with asbestos sheets should not be less than

A.	26'/2°	B.	30°
C.	35°	D.	40°

54.

To minimise the total cost of a roof truss, the ratio of the cost of truss to the cost of purlins shall be

A.	1	B.	2
C.	3	D.	4

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