131. The type of joint commonly used at the junction of a principal rafter and tie beam in timber trussess is__________________?

A. mortise and tennon joint
B. oblique mortise and tennon joint
C. butt joint
D. mitred joint

132. The type of roof which slopes in two directions with a break in the slope on each side is known as_____________?

A. gable roof
B. hip roof
C. gambrel roof
D. mansard roof

133. The horizontal timber piece provided at the apex of a roof truss which supports the common rafter is called______________?

A. ridge board
B. hip rafter
C. eaves board
D. valley rafter

134. Pitched and sloping roofs are suitable for________________?

A. coastal regions
B. plain regions
C. covering large areas
D. all of the above

135. Mansard roof is a roof which slopes in________________?

A. two directions without break in the slope on each side
B. two directions with break in the slope on each side
C. four directions without break in the slope on each side
D. four directions with break in the slope on each side

136. The lower edge of the pitched roof, from where the rain water of the roof surface drops down, is known as______________?

A. hip
B. gable
C. ridge
D. eaves

137. The triangular space formed between the extrados and the horizontal line drawn through the crown of an arch is known as_____________________?

A. haunch
B. spandril
C. voussoirs
D. skewbacks

138. In the construction of arches, sand box method is used for________________?

A. centring
B. actual laying of arch work
C. striking of centring
D. none of the above

139. The type of roof suitable in plains where rainfall is meagre and temperature is high is______________?

A. pitched and sloping roof
B. flat roof
C. shell roof
D. none of the above

140. The lintels are preferred to arches because______________?

A. arches require more headroom to span the openings like doors, windows etc.
B. arches require strong abutments to withstand arch thrust
C. arches are difficult in construction
D. all of the above

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