Changes
Jump to navigation
Jump to search
← Older edit
Newer edit →
Infiltration: Testing
(view source)
Revision as of 19:04, 5 October 2017
457 bytes added
,
7 years ago
→Design Considerations
Line 78:
Line 78:
{{:Safety correction factors}}
{{:Safety correction factors}}
+
===Example===
+
Where the mean infiltration rate measured at the proposed bottom elevation of the BMP is 30 mm/h, and the mean infiltration rate measured in an underlying soil horizon within 1.5 metres of the bottom is 12 mm/h:
+
:<math>ratio=\frac{q_{bottom}}{min\ q_{within 1.5m}}\ =\ \frac{30}{12}\ =2.5</math>
+
+
From the table the SCF is 3.5, and the design infiltration rate can be calculated:
+
:<math>q'=\frac{q}{SCF}\ =\ \frac{30}{3.5}=\ 8.6 mm/hr</math>
[[category:Infiltration]]
[[category:Infiltration]]
Jenny Hill
8,255
edits
Navigation menu
Personal tools
Log in
Namespaces
Page
Discussion
Variants
Views
Read
View source
View history
More
Search
Navigation
Home
Table of contents
All pages
Recent changes
Responses to comments
Tools
Special pages
Printable version