Laserfiche WebLink
Eiders Construction <br />NovenJ)--r-r 1�339 199 1 <br />A depth of at least 9 inch -s of _lean rock: 1 1/4 irn_h <br />diameter to 2 1/ irlches in diameter, shall be placed on the <br />sand layer prier i,,-. installing the distributic-rl pipe. <br />Pressure Distribul-i,,n <br />Effluerltrshall be distributed over the filter rr-aterial by a <br />1 1/2 inch diameter p<_-rforated pipe under pressures. <br />Perforation holes shall. be 1/4 inch in diari-ter drilled in a <br />straight line along the length Of the pipe-. Holes spacing <br />shall be 36 inches. Holes Shall bs drilled straight into <br />the pipe and not at an angl:a. A sharp drill shall be used <br />and any burrs in the inside or outside of the pipe shall be <br />removed. The per f,-Drated pipe laterals shall b • installed <br />level with the per foration== downward. <br />The perforated pips, shall be connected to a 2 inch <br />diameter manifold pipe and _hall have their endue ._app•_d. <br />The laterals shall be spaced no further than 4r;- in-_hes On <br />center and no further than inches from the ed��- of the <br />filter material. <br />Tile manifold pipe =hall be -:onnected to Vie supply pipe from <br />the pump. The ritani fold shall be slope:i toward the pump for <br />complete drain bacl: cif effluent. <br />Pump and Col1ectic-ii Tan4:: <br />A pump shall lbe-u =d to deliver effluent t-_j the resound. The <br />pump shall be case: iron or bronze fitted with stainless <br />steel screws or cc-nstructed of ether sound, durabl.•: and <br />corr,:Osiorl-resistant materials. Location Of pufiip tank: and <br />septic tank: can b- Optional due to tile- use of a pressurized <br />mound. <br />An alarm device shall be installed to warn of pump failure. <br />The dosing chamber will be sized for a aiiniinurn of 2 days of <br />restricted use du•_ to anic-unt of daily use. <br />Purnp Discharge <br />The pump discharge, capacity is based on the perforation <br />spacing and perforation diartieter. This system has <br />individual lateral lengths Of 61::- feet; laterals will be 1 <br />1/2 inch plastic pipe with 1/4 inch perforations spaced <br />36-inches apart. This size will require 7 GPM per 100 <br />square fret of bed area. A 45 GPM rninimurn pump discharge <br />capacity is required. The pump discharge head shall be at <br />least 5 feet greate-r than the heat: required to overconie the <br />pipe friction loss and the elevation difference between the <br />pump and the perforated laterals of the pressure <br />distribution systt-rn, which is miniriiurn of (see purnp sheet) <br />15- foot head. <br />