CIVIL WORKS GUIDELINES FOR MICRO-HYDROPOWER IN NEPAL
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Photo 7.5 Stone masonry support piers, Jhankre mini-hydro scheme
Photo 7.6 The use of an extension to the concrete support lifts the
pipe clear of an block, allowing drainage and preventing corrosion
between the block and the pipe (Khamche)
Figure 7.4 Typical section through a support pier
7.4 Design of anchor blocks and support
piers
7.4.1 GENERAL
The design of anchor blocks and support piers requires
resolving some common forces, which are therefore discussed
together in this section. First the structures are tentatively
sized and the various forces that act on them are resolved.
The minimum calculated block size that is safe against
bearing, sliding and overturning is accepted. It should be
noted that the design process involves a few iterations. Various
forces that can act on anchor blocks and support piers are
summarised in Table 7.2 and discussed thereafter.
Photo 7.7 Wooden support piers at Kamche micro-hydro, Nepal