Vertical distance between the springing line and highest point of the innercurve of an arch is known as ____ ?
A. rise
B. extrados
C. intrados
D. spandril
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A. rise
B. extrados
C. intrados
D. spandril
A. 12
B. 31
C. 53
D. 7
A. 500 to 550 mm
B. 600 to 650 mm
C. 300 to 350 mm
D. 400 to 450 mm
A. 40° and 25°
B. 60° and 10°
C. 90° and 0°
D. 75° and 30°
A. to prevent the walls from spreading outward
B. to prevent the tie beam from sagging at its centre
C. to support the frame work of the roof
D. to receive the ends of principal rafter
A. 4.5 m
B. 5.5 m
C. 2.5 m
D. 3.5 m
A. to support purlins
B. to prevent the purlins from tilting
C. to support the common rafter
D. None of them
A. 4.5 m
B. 5.5 m
C. 2.5 m
D. 3.5 m
A. gable
B. ridge
C. eaves
D. hip
A. four directions without break in the slope on each side
B. four directions with break in the slope on each side
C. two directions without break in the slope on each side
D. two directions with break in the slope on each side