Costing and Estimation ofWorks - Afforestation, Reforestation and Forest Restoration in Arid and Semi-arid Tropics - page 141

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

Unskilled Semi-skilled Skilled

(ii) S4 1,000 m 48

(iii) S5 1,000 m 72

(d) Terrain slope is 25 %, and soil of hardness class:
(i) S3 1,000 m 45

(ii) S4 1,000 m 60

(iii) S5 1,000 m 90

4-7 Construction of contour bunds in fields, pasture lands, etc. terrain having a slope of 1-5 %,

including excavation, formation, and hand compaction to 90 % natural density, where
(a) The bund is of standard section CB-1, and the soil is of standard hardness class:
(i) S1, S2, or S3

100 m 33

(ii) S4 or S5 100 m 59

(b) The bund is of standard section CB-2, and the soil is of standard hardness class:
(i) S1, S2, or S3 100 m 41

(ii) S4 or S5 100 m 74

(c) The bund is of standard section CB-3, and the soil is of standard hardness class:
(i) S1, S2, or S3 100 m 57

(ii) S4 or S5 100 m 102

(d) The bund is of standard section CB-4, and the soil is of standard hardness class:
(i) S1, S2, or S3 100 m 69

(ii) S4 or S5 100 m 125

(e) The bund is of standard section CB-5, and the soil is of standard hardness class:
(i) S1, S2, or S3 100 m 97

(ii) S4 or S5 100 m 174

4-8 Construction of loose-stone check dams (LSCDs), including dry-stone masonry work, laying

humus, litter, and clay on upstream surface so as to make it impervious, and pitching of
downstream ground over a distance of 5 m in 30 cm thickness, where
(a) Stones are made available in stack on site, such as those already transported by tractor, etc. 100 m 3 40

100 m 3 (b) Stones have to be collected and fetched from an average distance of 100 m 80