Costing and Estimation ofWorks - Afforestation, Reforestation and Forest Restoration in Arid and Semi-arid Tropics - page 130

Table 7.1 (continued)
Sr. No. Item specifications Unit of work Required man-days

Unskilled Semi-skilled Skilled

(ii) SW-2 100 m 112

(iii) SW-3 100 m 75 3

(c) Stones have to be collected and fetched from an average distance of more than 100 m but
less than 250 m, and the wall is of standard section:
(i) SW-1 100 m 93

(ii) SW-2 100 m 125

(iii) SW-3 100 m 83 3

(d) More than 50 % stones have to be split or cleaved from ground with a crowbar or
pickaxe, and wall is of standard section:
(i) SW-1 100 m 112

(ii) SW-2 100 m 150

(iii) SW-3 100 m 98 3

(e) More than 50 % stones have to be quarried, using wedges, jumpers, etc., and the wall is
of standard section:
(i) SW-1 100 m 168

(ii) SW-2 100 m 225

(iii) SW-3 100 m 145 3

3-2 Topping fence wall with locally available clay or clay-gravel mixture, including excavation of

material and spreading a layer of 7.5 cm average thickness, so as to stabilise top layer of
stones against falling, where wall is of standard section:
(a) SW-1 100 m 4

(b) SW-2 100 m 5

3-3 Excavation of trench of 30 30 cm section, running parallel to wall at 0.50 m distance,

including forming the excavated soil into a continuous bund along edge of trench, where
soil is of hardness class:
(a) S1, S2, or S3

×

100 m 4

(b) S4, S5, or S6 100 m 9

3-4 Repair of dry stonewall, including pulling it down completely and rebuilding, including

collecting supplementing stones if required: