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Cross Mine(M1977-410) Technical Revision No.5 <br /> 3"x 8"Douglas Fir Lagging <br /> to support roof VV6 x 28 Wide-Flange <br /> Steel Beam <br /> . ..............-.•.'.t."'::::: ::A-Si:t".:-.:A''';:s••••::.!:-.:''.:.:t:"::.?:•.:':: ••....:::::?...:.:,.::f....:*:,..::,,....:::::•:...:":"•,,..-.:.:,i::::::::::,,....:::is.-•:-.::: :::..:,,:-.:::-.::*•.:::.::,..:::: ::':::,..-.::: ::•:::•:"-.:':f.:.,:-.*:::.::,..-:::':::;:-.:::.::•.*•.:::.:.,.*•.::. <br /> i.. <br /> , •:2;••••••••?:."...•:::;:....:••,•:..-:: re <br /> \' 3"Diameter Steel Pipe <br /> set as cross braces <br /> 10"Air Duct I <br /> dli <br /> Electric Cable <br /> ! 240v&2600v 1' <br /> , <br /> 3"x 8"Douglas Fir Laggine <br /> it <br /> W6 x 28 Wide-Flange Steel Post i,i <br /> i 12"x 12" i 1I <br /> 1 I <br /> /I Concrete Footing /( <br /> 10"Drain Pipe <br /> �' 2 2 2 '\ <br /> .441/15ESEBE—___ _. ___-----,--------. --_ '— - — ---Minkleism...— ol':.:.•:is-:•:•.:-::t.-•:Y:5" -•:-*:* <br /> :,.:;:;:: :;:;..f:.:: .g:...a ,•.:..: 0 ...., -. • .. <br /> NOTE: <br /> Space between the lagging and final rock surface <br /> which is greater than 1"should be filled in with wood <br /> cribbing or blocking,muck,grout,polyurethene foam, <br /> etc.to form positive contact between the rock surface <br /> and steel supports or lagging. <br /> REFERENCE DRAWINGS <br /> DRAWING NO. TITLE Cross Mine Technical Revision No.5 <br /> P4 <br /> Typical Portal Ground Support <br /> GRAND ISLAND <br /> RESOURCES <br /> REVISIONS DRAWN BY: JST DATE:02-28-2020 ISSUED FOR BID: SCALE: NONE <br /> NO. DATE BY DESCRIPTION WO.NO.CHK APP. CHECKED BY: DH DATE:03-25-2020 ISSUED FOR CONSTRUCTION: <br /> 0 04-09-2020 JST ISSUED FOR RELEASE APPROVED BY: DH DATE:03-255-2020 DRAVMNGER: 9 FI ure 2 SHEET 1 <br /> NUMB <br /> OF 1 <br /> 8 <br />