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EARTHWORK ESTIMATING - SCRAPER WORK <br /> TASK DESCRIPTION: <br /> HOURLY -EQUIPMENT COST: <br /> Machine make and model 6 -3 -7 attachments <br /> adjusted Operator Cost Per our <br /> hours days base base shift total <br /> shift per per rental operating wage overtime premium equip. <br /> no. day week rate/hr. cost/hr rate/hr adjustment ad . cost/hr <br /> 1 13 y. CS N/A <br /> 2 q N <br /> 3 <br /> Total = a+ i F. <br /> $ All /hr. divided by �_ shifts/day = $ a/ / average total equip. cost/hr. <br /> MATERIAL QUANTITIES: <br /> BCY x swell factor = a -?z 75' 3 LCY <br /> eri ication method Cs) used f« In�.��..a4-r <br /> HOURLY PRODUCTION: <br /> Haul distance = ft., return distance = �a ft., altitude 00 o ft. <br /> Total resistance hau :�a X rolling res. plus — 7 grade res. For-) _ -� % <br /> Total resistance (return) % rolling res. plus % rade r grade (+or-)= �y_X <br /> Note: for grade resistance, (+) unfavorable, favorable (downhill) <br /> Cycle time: Load (627B = 0.8 min., 637D = 0.9 min., 657E = 1.0 min) = ,9 min. <br /> Haul - see distance vs. time tables in Section VII = i min. <br /> Maneuver and spread (same for all models) = min. <br /> Return - see distance vs. time tables in Section VII min. <br /> total cycle time = y, 2 min./cycle <br /> 60 min./hr divided by minutes/cycle cycles/hr. <br /> 31_ LCY rated bowl capacity (heaped x Ij S cycles/hr. _ o LCY/hr. (unadj.) <br /> y� LCY/hr, x f­1 job efficiency* , 7,;), altitude adj. =3L3 LCY/hr (adj.) <br /> *average efficiency for all shifts utilized <br /> Fleet production = 2 no. scraper used x 2,32 LCY/hr/scraper LCY/hr/fleet <br /> JOB COST: <br /> a7.2 73 <br /> LCY divided by _Z2�_7 LCY/hr. = 0173 total job hours <br /> total material vol. fleet prod. <br /> $ a// /hr. avg. scraper cost x _ scrapers used = $ C-?,? fleet cost/hr <br /> 7 <br /> a.73 hrs x $ _ d 3 .3 /hr. = $ /7•?r,A5' Total Job Cost <br /> total job time hourly fleet cost <br /> unit cost/LCY = $ �201; 0 divided by .2 _ $ o, 7,5' /LCY <br /> total job cost total material vol. <br /> 4 a-23 X //? ) <br /> 28 <br />