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i I MIRAFI ` 140 /140NC/14ONLt f Nonwoven Subsurface Drainage Gealextiles k �sss�4asss AMw��sa��• iss�s•sMy#ras�ss■lswsssssl�'��s�s��ssss ssswss•es sassis�• }I I PRODUCT DESCRfPTI N Good drainage is essential gr soil stability. In order for drainage structures to be effective along highways, within embankments, under ii-fields and athletic fields, ; or anywhere subsurface drains are required, they must have a properly designed pr tective filter, Trad;tionally, graded-aggregote filter symeris have been used with lim. ited success to prevent soil p rtiGles From migrating into subsurface>droinoge structure . These aggregate drains, however, have several inherent problems, including high t cost, and difficult installation. Wrafi 140N, 140NCr and 140NL,nonwoven geotextil is provide a cost-effective alternative to groded-aggreg to filters. 1 FEATURES Superior design features of h ircrfi 14ON/140NC/14ONL ;a+:•;1 -- include the following: • Easily conform to the groui id or trench surface for f6st and trouble-free insttallaHo ; • Create .superior filter rnec la because of high water How rate and excellent Tilt tion properties; • Withstand severe instoliati c stresses with high punc- ture unyture and burst resistance. I ADVANTAGES Mirafi MN/14ONC/140M subsurface drainage gent- exHles eliminate many of the problems associated with: • Determining the aggregate gradation required to t match soil conditions; • Finding a convenient and i1conomical source of a spe- cific aggregate gradation; (1)Finish covering the pipe and geotextile with select fill • Transporting and placing a graded aggregate; to the proper grade. In trenches greater than 12 inches • Assuring that the in-place aggregate gradation pro- wide, the geotextite should be folded over the top of the vides effective filter performance- drainage material, producing a minimum overlap of 12 INSTALLATION inch®a. In trench less than 12 inches wide, The overlap , should equal the width of the trench. Overlap successive Before placing 1 AON, 140 C or 140NL, cruor the site geotextiie sfieets a minimum of 12 inches in the direction of all large stones, roots, or d debris. (DExcavate and of the flow, with the upstream layer overlapping the shape the site to the lines and grades as directed. Fill downstream. depressions or Was to permit close contact between the geotextileand the prepared wrFace. Place the gentextile •��sisses�sa��sa�ss��sr��*ssassssr• smoothly without foids or wressive wrinkles. Place the aggregate and pipe according to specifications. Use HICOLOHaO n d 90 special care when placing t e aggregate to a void dam- t.7KkJ` PI aging the geetextile. 1-800-234-0484 ---- --- IOQ 'd --------- _ MM6 6QZ13,L h01SlAlQ MAIM Wlld--CS : 50 (NOM66 ,24- '011