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Line 89:
Line 89:
→Access Structures
The use of maintenance holes/vertical standpipes connected to the perforated pipe system are used for inspection and flushing, ensure couplings used for standpipe connections are 45° to facilitate pipe access by camera or cleaning equipment. (See below for example of couplings attaching to an underdrain pipe):
The use of maintenance holes/vertical standpipes connected to the perforated pipe system are used for inspection and flushing, ensure couplings used for standpipe connections are 45° to facilitate pipe access by camera or cleaning equipment. (See below for example of couplings attaching to an underdrain pipe):
[[File:45 degs.PNG]]
[[File:45 degs.PNG|thumb|400px]]
==Access Structures==
==Access Structures==