Civil Engineering Reference
In-Depth Information
Figure 9.27
Thickness of webs for box sections
of 400 mm should be adopted, with a gap between rows of tendons not less than
100 mm.
When small prestressing ducts are used, with an internal diameter of 55 mm or
less, it is possible to bundle them together in pairs for the purpose of defi ning the web
width as described above. However, such small tendons are rarely used in bridge deck
construction.
