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FROM WRTER MGT. CORSULT Rn TS 03.24,19?8 17:25 p g2 • • , pipe. A plastic plug or end cap shall be attached [o the upstream end o! the tubing. The reducer coupling and end plug shall be attached to the; [ubing with glue and hose clamps. Site installation personnel shall avoid cinching the polyethylene tubin_ during installation. Jf the tubing becomes cinched, the section shall he cut out and a barbed nipple inserted. • The emitters (drip heads) shall be attached to the polyethylene tubing at approximately 5 foot intervals. The emitters shall be at[ached according to the manufacture's instructions. The emitters shall be rated for a minimum pressure of 60 psi and have a flow rating of Z gallons per hour (gph). The emitters shall be pressure compensating so [hat the desired flow rata is maintained. In addition, the emitters shall be self cleaning. The polyethylene tubing and attached emitters shall be placed inside 4-inch diameter, flexible drain tubing (commonly referred to as French Drain). The drain pipe shall be slotted or perforated. The appropriate couplings shall be used to attach the sections of drain cubing together. The drain tubing is commonly sold in 100 foot length;: therefore, a minimum of three attachment couples shall be obtained. An end cap shall be placed on the upstream side of the drain pipe to prevent entry of any large material. • The drain tubing with enclosed 3/4-inch polyethylene tubing and emitters shall be secured to the adit wall at approximately 5 foot intervals. The drain tubing shall be secured approximately 5 feet above [he alit floor using rope, plastic wire ties, or another appropriate method. The estimated quantity of materials are as follows: 1-inch diameter stainless stet) 316) i e 26 feet Steel flan a to attach to 1-inch diameter i e a 1-inch diameter stainless steel (316) cou line 1 1-inch diameter stainless steel 316 ate valve i 1-inch diameter stainless steel (316) male end lu 1 1-inch diameter threaded to ?a-inch diameter barbed nose plastic cou ling _ 1 •'•'/a-inch of eth lene Lubin ,minimum 90 psi 200 feet 1-inch diameter barbed n~ples -~ 4 }/,-inch diameter barbed plug or end cap _ _ 1 1 '/a-inch diattteter stainless s[ee] hose clamps 10 Glue tom atible with powethylene tubing 1 _ ~ F_m_itter heads, 2 gplt flow ratio);, minimum GO si 40 An s ecial tools to instal] emitter heads 2 4-inch dianteterperforattd or Slotted flexihl_e drain i c 200 feet 4-inch diameter couplin s for drain i e 2 4-inch diameter end cap for drain pipe 1 Hangers or securing ties for drain i e 50 Notes: (a) The steel flange shall be consistent with the design for the 3-inch stainless steel drain pipe that will also be installed in the adit plug. L.L. Johnson Distributing Company of Denver, Colorado can supply the polyethylene tubing and emitter heads and their phone number is (303)320-] 270. Pipe Valve and Fitting Company of Denver, Colorado can supply tl,c stainless pipe and gate valve and their phone number is (303)239-Sg 11.