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Landmarc Environmental Systems,LLC Site-Specific Health&Safety Plan(SSHSP) <br /> TRiNcHIHG-ExcAnTioN <br /> 7.5 MAXIM UNI ALLOWABLE SLOPES <br /> SOIL OR ROCK TYPE <br /> MAXIMUM ALLOWABLE SLOPES (H:V)i <br /> FOR EXCAVATIONS LESS THAN 20 FEET DEEP3 <br /> STABLE ROCK VERTICAL(94 Deg.) <br /> TYPE A2 $/4:1 (53 deg.) <br /> TYPE B 1:1 (45 Deg_) <br /> TYPE C 1 %:1 (34 Deg.) <br /> T Numbers shown in parentheses next to maximum allowable slopes are angles expressed in degrees <br /> from the horizontal.Angles have been rounded off. <br /> 2 A short4wm rnaximarn a€lowabie slope of f12H:1 V(63 degrees)is allowed is excavation in Type A soil <br /> that are f2 NO(3.67 m)or fess in deptfr_Short4erm maximarn allowable slopes for excavations greater <br /> than 12 feet(3.67 m)in depth shall be 314H_f V(53 degrees). <br /> 3 Siaping arbenching for excavations greater than 20 fee€deep shall be designed by a registered <br /> professional engineer. <br /> Slope Configurations(All slopes stated below are in the horizontal to vertical ratio) <br /> 7.5.1 SLOPE CONFIGURATIONS: EXCAVATIONS IN LAYERED.SOILS. <br /> rYPE ASOIL r4PE9 SOIL TYPE:­mi <br /> Eimplo-Elopo-Excawtion simple a.pa E.—n— sirrpl.slopo-Exo Ao <br /> imam �O Mezm�r. ,.1 �1 <br /> TSpeBSoil TW.ASoil Type ASo! <br /> over over <br /> Tia E3 <br /> Typ.A Soil .'� Tip.e261 + T1p,C Sal <br /> i Type P', T <br /> f t k <br /> X- h <br /> T![cA di <br /> N4 �. <br /> Typo C Sail Typo C Sail T!pc B boil <br /> — wei wei axi <br /> rypt T rG.Soil �� TyprB Soil 1 Type C Still <br /> ...1112 TYP°� I ... TypeB ! <br /> , 41 <br /> CONSTRUCTION EQUIPMENT DANGERS <br /> A. Any moving equipment such as skip loaders, back hoes, trenchers, cranes, hi-lifts, trucks, you name <br /> it, should be respected and avoided. Don't just assume that the operator sees you. You could wind <br /> up injured or worse. And don't depend on hearing a horn or an alarm to warn you that moving <br /> equipment is near. You may not be able to hear the equipment's alarm over other construction <br /> noise. <br /> B. When you see that equipment is traveling backwards keep out of the way and stand clear until the <br /> 17 <br />