126. The vertical distance between the springing line and highest point of the innercurve of an arch is known as
a) intrados
b) rise
c) spandril
d) extrados
Ans: b
127. Depth or height of the arch is the
a) perpendicular distance between intra-dos and extrados
b) vertical distance between springing line and intrados
c) perpendicular distance between springing line and extrados
d) none of the above
Ans: a
128. 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
Ans: b
129. 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
Ans: d
130. 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
Ans: c
131. The type of arch generally constructed over a wooden lintel or over a flat arch for the purpose of carrying the load of the wall above is
a) segmental arch
b) pointed arch
c) relieving arch
d) flat arch
Ans: c
132. 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
Ans: b
133. 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
Ans: b
134. Pitched and sloping roofs are suitable for
a) coastal regions
b) plain regions
c) covering large areas
d) all of the above
Ans: a
135. 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
Ans: c
136. 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
Ans: d
137. 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
Ans: a
138. 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
Ans: d
139. Higher pitch of the roof
i) results in stronger roof
ii) results in weaker roof
iii) requires more covering material
iv) requires less covering material
The correct answer is
a) (i) and (iii)
b) (i) and (iv)
c) (ii) and (iii)
d) (ii) and (iv)
Ans: a
140. Couple close roof is suitable for maximum span of
a) 2.5 m
b) 3.5 m
c) 4.5 m
d) 5.5 m
Ans: c
141. In a colar beam roof
a) there is no horizontal tie beam
b) there is a horizontal tie at the feet of rafters only
c) there is a horizontal tie at almost the middle of rafters only
d) there are two horizontal ties, one at the feet and other at the middle of the rafters
Ans: c
142. The function of king post in a king post roof truss is
a) to support the frame work of the roof
b) to receive the ends of principal rafter
c) to prevent the walls from spreading outward
d) to prevent the tie beam from sagging at its centre
Ans: d
143. The function of cleats in a roof truss is
a) to support the common rafter
b) to support purlins
c) to prevent the purlins from tilting
d) all of the above
Ans: c
144. The term string is used for
a) the underside of a stair
b) outer projecting edge of a tread
c) a sloping member which supports the steps in a stair
d) a vertical member between two treads
Ans: c
145. The vertical posts placed at the top and bottom ends of a flight supporting the hand rail are known as
a) balusters
b) newal posts
c) balustrades
d) railings
Ans: b
146. The maximum number of steps in a flight should generally be restricted to
a) 10
b) 12
c) 15
d) no limit
Ans: b
147. The number of steps in a flight generally should not be less than
a) 2
b) 3
c) 5
d) no limit
Ans: b
148. Sum of tread and rise must lie between
a) 300 to 350 mm
b) 400 to 450 mm
c) 500 to 550 mm
d) 600 to 650 mm
Ans: b
149. Minimum width of landing should be
a) equal to width of stairs
b) half the width of stairs
c) twice the width of stairs
d) one fourth the width of stairs
Ans: a
150. In any good staircase, the maximum and minimum pitch respectively should be
a) 90° and 0°
b) 75° and 30°
c) 60° and 10°
d) 40° and 25°
Ans: d