Soil and Water Conservation Works - Afforestation, Reforestation and Forest Restoration in Arid and Semi-arid Tropics - page 99

t

∇

Rockfill and Pitching

h

Streambed

Baserock f

LC in Foundation (1:8)

b

Cross Section of a Gravity Stopdam on a Stream

Headwall

Wingwall Streambed Wingwall

Bedrock

Frontal View

Wingwall

Stream flow

t Headwall

b

Wingwall

D/s p i t c h i n g

l

Plan

Gravity Stopdam Sections for Standard Heights

Stopdam No. Design Parameters (m) Cost/m

(mdeq)

Remarks

tbf

h

SD-1
SD-2
SD-3
SD-4
SD-5

1.00 0.45 0.90 0.90 20 Minimum depth of the

foundation should be
equal to the depth of
the base rock.

1.50 0.45 1.50 0.90 40

2.00 0.45 2.00 1.00 55

2.50 0.60 2.20 1.20 75

3.00 0.60 2.50 1.20 95

Fig. 5.7 Gravity type stop dam