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— _ -- - --- — - <br /> All excavalions over 48" deep are treated as Type C soil <br /> Use trench box, shoring or 1V:1.5H sloping_ __ <br /> Sec Safetyprior to entry for jobs requirinc� Ty�e A or Type B verification <br /> Underground ulililies mus( bc located_ Photoc, r�h locates marks if necessary. <br /> All spoils, materials and equipment must be kepl more than 2 feet from ihe excavation edges <br /> Shielding,'Shorinq labulated data must be kept on site <br /> Standing or weeping waler in the trench must be removed <br /> A ladder must be available out of ihe Uench within 25 feet oi workers <br /> Almospheric testing must be performed continuously if there is: <br /> 1. Machinery running lhat could contaminate the lrench with carbon monoxide (CO) <br /> 2. Underground storage lanks or pipelines that may ��ave leaked into the surrounding soil <br /> 3. Known land(ill or dump site that could migrate flammable or noxious vapors inlo the trench <br /> Traffic Control Devices <br /> - - -- - — - <br /> 10 foot lanc 11 foo! lanc 12 foot lanc Shoulder <br /> __- - - -- ---- - -- --- ----- - - -- - --- <br /> - � /.�_ .L, %: L ' ', ,' � l . %sL • '1/3L . .. <br /> -- - _ -- --- - _ ----1 ---- - -- -----—= , - --- --- --- _ _ =- <br /> MPN Merge Cone Shifl Conc Mergc Conc ShiR Cone Mcrge Cone Shift Conc Taper Cone <br /> - - - - ---- ___ _- - -- --- -- - ---- — <br /> 20 ' 70 fl 5 35(t 'S 75 fl' S 40(t 3 t30 fl 5 40 ft 3 25 fl ' ,3' : <br /> - -- - �, . - - _ - - - - --- - - -- -=--r .---- <br /> 2Ci 105 U 5:i :i 115 6 60 � 125 6 6!i 4 35 3 <br /> ---- -- - - - - -- - - - - - - . _- _ - --- <br /> 30 150 G 75 4 tfi5 7 85 4 . 180 7 90 4 50' 3 `. <br /> .. <br /> -- _ - - - - --- ---- -- -- -- -- ----- -- -- <br /> 35 205 7 IOCi 4 225 fl 11Ci 5 'l_45 fl 12Ci 5 70 4 <br /> -- -_ - _.__ . - -- ----- --- -- <br /> 40 270 II 135 5 295 9 150 5 3?.0 - 9 160 --5 -90 -4 <br /> - ---- _ _. _ _ - - - - - - -- -- <br /> 45 450 11 225 f 495 12 'l.;Si) 7-- 540 13 270 7 . 150 6 <br /> - --- . -- -- - - --- __ _ - _ _ <br /> 50 5Q0., 11 750 � 550 12 ?75 7 600 13 300 7 17�. ,r6- ' <br /> - - _--- -- _ - --- - --- <br /> - - -- -- - <br /> 55 '�50 11 275 fi f05 IZ 30`i 7 G00 13 330 7 185 � <br /> -- - - - - - - - -- — <br /> 60 fi00 11 I 300 (i 6G0 12 33U 7 720 13 3G0 7 200,`' G=.; <br /> _ - - - - -- _. - - - --- = <br /> Downstrcam Taper-100 tccUlanc closed <br /> I SIGN SPACING ', Road Work Ahc::�i I Flayger Ahead Preparc to Stop 4°'si n <br /> 3G" x 36 " � 48" x 46" i 3G" x 36" 9 <br /> _ _ _ . - -_ <br /> I- _ 25 mph or Icss 100 f! I 100 (t i 100 fL - N/n <br /> I -- -- -- - - -- --__ __ - ----- --- - --- <br /> 30 mph 200 �l i 200 ft I 200 ft � Nll� <br /> I _ ___ _ _ <br /> 35-40 mph 350 fl ; 350 fL I 350 fl. j NIl1 <br /> I ---- ---- - _ _ _ --= ----� --- - - <br /> -- .. <br /> r------ <br /> 45-55 mph � 500 (� j 500 fL 500 (1. 500 fl. <br /> I _ _ _ _ _ _ _ i __ -- - _ _ -- - . _ _ . <br /> 60-G5 mph 1,000 (I. � 1.000 II. ' 1.000 fl. 1,000 fl. <br /> iaw�:.��a c�uoc <br />