Changes
Jump to navigation
Jump to search
← Older edit
Newer edit →
Gravel diaphragms
(view source)
Revision as of 19:36, 14 July 2020
4 bytes added
,
4 years ago
→Design
Line 18:
Line 18:
==Design==
==Design==
*Where flow comes off an impervious surface,
a
drop of 75 mm
or more
to the surface
level
of the diaphragm is recommended,
*Where flow comes off an impervious surface,
an elevation
drop of 75
to 150
mm to the surface of the diaphragm is recommended,
*Typical dimensions for the trench excavation are 300 mm deep and 600 mm wide. The trench may be any length,
*Typical dimensions for the trench excavation are 300 mm deep and 600 mm wide. The trench may be any length,
*The trench should be lined with geotextile before filling with gravel,
*The trench should be lined with geotextile before filling with gravel,
Dean Young
Bots
,
Bureaucrats
, developer,
Interface administrators
,
Administrators
,
Widget editors
1,559
edits
Navigation menu
Personal tools
English
Log in
Namespaces
Page
Discussion
Variants
expanded
collapsed
Views
Read
View source
View history
More
expanded
collapsed
Search
Navigation
Home
Table of contents
All pages
Recent changes
Responses to comments
Tools
Special pages
Printable version