74. Inthe case of CI pipe joints, which options are correct

1. Socket and spigot joint
11. Flanged joint
वा, Collar joint

IV. Adhesive joint
(^) 1876 11 are correct
(೮) 11 गाव III are correct

(8)
(0)

Tand IV are correct
III and IV are correct

75. The slope provided for self-cleansing velocity to 100 mm diameter drain pipe

(ಸ) 1:20
(C) 1:40

76. The collar joint of asbestos cement pipe shall be

angle to the surface pipe
(A) 30°
(C) 55

77. The joint of pipe which are most suitable for carrying water lines over bri

bear vibrations
(A) Dresser coupling joints
(೮) Caulked joint

78. Laying of PVC pipe the width of trench shall be out

(A) 20cm
(0) 35cm

79. The ratio of cement mortar used for collar joint
(^) 1
(C) 1:3

80. Before solvent cement applying, the inside of the fitting and outside of the pipe may be

roughed with
(A) Smooth file
(C) Emery paper

(B)
(D)

(B)
(2)

B)
(D)

(0)
(0)

(8)
(0)

(8)
(2)

finished off with a fil

1:30
1:50

45°
90൦

Flanged joints
Bell and spigot joint

side diameter of pipe plus

30 cm
40 cm

Cotton waste
knife — edge file

81. The tool which is used to lift and spread the mortar during masonry work

(A) Spade
(C) Trowel

094/2022 12

(B)
(D)

Shawal
Plank float

let sloping at what

ഉടെ where it has to