Laserfiche WebLink
n <br /> Infiltrator Systems Inc., Technical Bulletin: <br /> Guidelines for Infiltrator Chamber Installations in <br /> Very Fine Uniform Sands <br /> Infiltrator Systems Inc.suggests (non-mandatory) the installation of specified filter fabric if <br /> any of the following conditions are present: <br /> 1. Chambers installed in uncompacted, very fine, uniform sands. <br /> 2. Installations left uncovered and subject to a major rain event. <br /> I 3. Systems not sodded for stabilized) in a timely matter after final cover-up has <br /> occurred. <br /> 4. A drainfield located in a poorly drained area such as: an area subject to inundation <br /> by frequent flooding events, surface drainage of rainwater directed over the system, <br /> or a drainfield not protected by gutters, curtain drains, or installed in a high water <br /> table area. <br /> Filter fabric specifications: <br /> • Fabric shall be non-woven <br /> • Weight:0.35 oz./s.y. to 1 oz./s.y. <br /> Apparent Opening Size (AOS): 20-30 U.S.Sieve (ASTM D 4571) <br /> Manufacturers included but not limited to: Carriff Corp. Soil Separator, Reemay <br /> Spunbond Tileguard,Typar <br /> Please note the following supplemental Installation Instructions.- <br /> 1. <br /> nstructions:1. Refer to Chamber Installation Instructions. <br /> 2. After installation of chamber in trench or bed configuration, place fabric over the <br /> chamber so that each sidewall is completely covered. (See Figure 1) <br /> 3. Complete per Installation Instructions. <br /> °¢ Y <br /> 3 <br /> at- <br /> Figure 1: In Very Fine Uniform Sands place fabric <br /> completely over the sidewalls of the chamber <br /> Page 2 of 2 <br />