question answer sa

What is the degree of SI of the two hinged arch?

• 1
• 2
• 3
• 4

The normal thrust in an arch rib is

• N= H cosθ + V sinθ
• N= V cosθ - H sinθ
• N= H cosθ - V sinθ
• N= V cosθ + H sinθ

Choose deficient arch type

• Hinge less arch
• Single hinged arch
• Two hinged arch
• Four hinged arch

A parabolic three hinged arch of span L m is subjected to an u.d.l of w/m run over the entire span. Find the vertical reaction for left support.

• wL/2
• wL/8
• wL/16
• wL/24

The expression for the slope of parabolic three hinged arch.

• Θ= 4r/l^2 (l - x)
• Θ= 4r/l^2 (l - 2x)
• Θ= 4r/l^2 x(l - 3x)
• Θ= 4r/l^2 x(l - 2x)

The number of reactions developed in fixed arch.

• 2
• 6
• 3
• 4

The case of circular arches, the following equation will be used:

• R^2 = x^2 – (R- yc - y)^2
• R^2 = x^2 – (R - yc +y)^2
• R^2 = x^2 +(R - yc - y)^2
• R^2 = x^2 + (R - yc + y)^2

For a symmetrical two hinged parabolic arch, if  one of the supports settles horizontally, then the horizontal thrust

• Is increased
• Is decreased
• Remains unchanged
• Becomes zero

Identity the arches according to the shape

• Circular arch
• Two hinged arch
• Single hinged arch
• Fixed arch

The temperatures stresses developed in the three hinged arch is

• Maximum
• Minimum
• Negligible
• Zero