Costing and Estimation ofWorks - Afforestation, Reforestation and Forest Restoration in Arid and Semi-arid Tropics - page 140

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

Unskilled Semi-skilled Skilled

(ii) DT-2 100 m 54 2

(e) More than 50 % stones have to be quarried, using wedges, jumpers, etc., and the dyke is
of standard section:
(i) DT-1 100 m 52 2

(ii) DT-2 100 m 72 2

4-5 Construction of bench terraces 5 m wide with riser batter 1:1, on contour on steep hilly slopes,

including cutting, dressing, filling, compacting, and lining the riser with dry-stone pitching
30 cm thick, where:
(a) Terrain slope is 15 %, and the soil is of hardness class:
(i) S4 100 m 67

(ii) S5 100 m 100

(b) Terrain slope is 20 %, and the soil is of hardness class:
(i) S4 100 m 100

(ii) S5 100 m 150

(c) Terrain slope is 25 %, and the soil is of hardness class:
(i) S4 100 m 130

(ii) S5 100 m 195

4-6 Construction of gradoni on contour lines marked on sloping hilly ground, including cutting

and filling of soil to from a bench of 1.2 m width with an inward slope of 20 %, where
(a) Terrain slope is 10 %, and soil is of hardness class:
(i) S3 1,000 m 18

(ii) S4 1,000 m 24

(iii) S5 1,000 m 36

(b) Terrain slope is 15 %, and soil is of hardness class:
(i) S3 1,000 m 27

(ii) S4 1,000 m 36

(iii) S5 1,000 m 54

(c) Terrain slope is 20 %, and soil of hardness class:
(i) S3