Ads
related to: french drain design calculations chartsidekickstar.com has been visited by 10K+ users in the past month
assistantmagic.com has been visited by 100K+ users in the past month
Search results
Results from the WOW.Com Content Network
The French scale measures the outer diameter of the catheter, not the size of the internal drainage channel (inner diameter). For instance, a two-way catheter of 20 Fr and a three-way catheter of 20 Fr have the same outer diameter, but the three-way catheter has an additional channel for irrigation, reducing the size of its drainage channel.
A diagram of a traditional French drain. A French drain [1] (also known by other names including trench drain, blind drain, [1] rubble drain, [1] and rock drain [1]) is a trench filled with gravel or rock, or both, with or without a perforated pipe that redirects surface water and groundwater away from an area.
the permissible long term average depth of the water table (Dw) on the basis of agricultural drainage criteria; the soil's hydraulic conductivity (Ka and Kb) by measurements; the depth of the bottom of the aquifer (Di) the design drain spacing (L) can be found from the equation in dependence of the drain depth (Dd) and drain radius (r ...
Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
This page was last edited on 25 September 2010, at 03:51 (UTC).; Text is available under the
Ads
related to: french drain design calculations chartsidekickstar.com has been visited by 10K+ users in the past month
assistantmagic.com has been visited by 100K+ users in the past month