Costing and Estimation ofWorks - Afforestation, Reforestation and Forest Restoration in Arid and Semi-arid Tropics - page 155

Table 7.1 (continued)
Sr. No.

Item specifications Unit of work Required man-days

Unskilled Semi-skilled Skilled

7-58 Drainage/disposal works

Construction of septic tank in all types of soil with 40 cm masonry in CM 1:6, 15 cm bed of
CC 1:5:10, 1:2:4 CC flooring, covered with 80 mm thick stone slabs, jointing slabs with CM
1:3; 50 mm stone slab partitions with 20 mm plaster in CM 1:6, finished with neat floating
cement; 4 nos. of CI footrests of approved design, 2 nos. of 450 mm dia. 25 kg CI cover
with frame, tank size being 200

1 nos. 24 8

× 100 × 130 cm (for 10 persons)

7-59 Construction of soakage well in all type of soils; including 300 mm thick dry-stone rubble

masonry, with top and bottom 300 mm course in CM 1:6; 80 mm thick stone slab joined
with CM 1:6 for cover; 40 mm thick 1:2:4 CC flooring; 3 m dia., 3 m deep

1 nos. 16 3

7-60 Construction of soakage trench in all types of soil, with 300 mm thick dry-stone masonry,

80 mm thick stone slab jointed in CM 1:3 for cover, 40 mm thick 1:2:4 CC flooring, top
width 180 cm, bottom width 90 cm, depth 240 cm

10 m 50 20

7-61 Construction of soakage well in all types of soil, inner diameter 90 cm, 12 m deep; top 90 cm

portion in 450 mm thick stone masonry in CM 1:6, 80 mm thick stone slab covering,
jointing, etc.

1 nos. 8 2

7-62 Laying and fixing of sand-cast iron pipe of approved make, in wall or in floor with MS holder

clamps in 10 × 10 × 10 cm CC 1:2:4 blocks, joints filled with CM 1:4 with spun yarn,
including cutting holes and making good the wall:
(a) 50-75 mm dia. 10 m 2 1

(b) 100-150 mm dia. 10 m 4 2

7-63 Fixing of sand-cast iron floor traps, P-traps or S-traps 10 nos. 1 1

7-64 Making connection of sewer line through main hole 2 nos. 1 1

7-65 Fixing of AC pipes of approved make with wooden plugs and MS clamps, jointing with spun

yarn soaked in bitumen and CM 1:2, including making good the wall:
(a) 50-75 mm

10 m 2 1

(b) 100-150 mm 10 m 3 1

7-66 Fixing of PVC soil, waste and rain pipes, of approved make, including jointing the pipe with

solvent cement, rubber ring, and lubricant/glue, diameter of the pipe being 63, 75, 110,
or 160 mm

10 m 1 1