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21 - Ironclad & Access <br />Victor and Ironclad Area - Reclamation (Growth Medium and Reseeding Only) <br />Footnotes for summary cost table: <br />'Assumes heavy grading will De done with conventional D10 or Dl 1 dozen with U blades where the push distances are practical <br />Assumes light grading will be done with a D9 dozer on the backfilled areas in Widhorse Extension area (rate = 2 hrsiacre) <br />'Growth Medium Replacement fleet will consist of three 623 Scrapers <br />'Growth Medium will be spread using a D-9 dozer to a depth of 6 inches <br />'Soil analyses will be run on samples of the reclaimed areas to determine optimum fertilizer rates <br />°Ripping and fertilizing will be conducted on the replaced growth medium using a conventional D4 dozer with a cyclone spreader <br />'Seeding and harrowing will be conducted on all replaced growth medium that is traversible with conventional equipment <br />"Assumes approximately half the area will require hand -seeding to achieve revegetation <br />'Mulching will be conducted using conventional hydro-seedeohydro- mulcher <br />t'Trees and shrubs will be planted on north and east - facing slopes <br />"Supervisor costs are figured at 25 percent of the total work hours to accomplish the reclamation effort <br />Dozer Productivity <br />Calculation for Heavy Gredina <br />Quaiati-j!y. <br />CCommen <br />JWhat is the Total Volume of backflled rock to be graded? 306,856 <br />Reference Sheet 9 (Average of cuVfia amounts) <br />Total Fleet Hours <br />What is the average Haul Distance for all material? 300 <br />Feet per Drawing Sheet 9 <br />Volume <br />What is the volume ff it were all just 5 R grading ? 306,856 <br />Calculated Volume = Area x 5 ft / 27 <br />What is the expected average push distance for leveling piles? 100 <br />Short Doze to level out end-dumped truck bads <br />What is the job correction factor for the operator? 0.75 <br />Average Operator, Cat Hdbk, 33 Ed, p1-42 <br />What is the job correction factor for the material condition? 1.2 <br />Waste rock is loose, Cat Hdbk, 33 Ed, p1-42 <br />What is the job correction factor for job efficiency? 0.83 <br />50 minutes operating per hour, Cat Htlbk, 33 Ed, p1-42 <br />What is the job correction factor for downhill grade pushing? 1.2 <br />Assume conservatively 10% grade, Cat Hdbk, 33 Ed, p142 <br />What is the job correction factor for side by side dozing? _ _ _ _ _ _ 1_2 _ <br />_ _Size by side dozing, Cat Htlbk, 33 Ed, p1-42 _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ <br />_ _ _ <br />(What s unadjusted production based on push dstance for a D10? 1,780 <br />cu ydsMr from Regression Equation Developed from Cat Handbook Version 39 <br />Calculated adjusted production based on job factors = 1893.4 <br />cu ydathr calculated <br />(Calculated D10 Dozer hours in grading = 182.07 <br />hours _- _- _______- ________ <br />________________ <br />_._____________________ <br />(What is unadjusted production based on push distance for a D11? 2,728 <br />__________- <br />cu ydamr from Regression Equation Developed from Cat Handbook Version 39 <br />'Calculated adjusted production based on job factors = 2934.1 <br />cu ydslhr calculated i <br />'Calculated Dll_Dozer hours in_grad_ing =____ _ _ _ _ _104.58_ <br />_hours _ _ _ _ _ _ _ _ _ - ___- ___- ___- _- _- _ -_ -_ -_ <br />Mau Haul Productivity for Fill Earthwork <br />Exceedlna 5 ff. Heaw Dozer Levelina of Piles <br />Additional Volume that will be truck hauled <br />0 Difference between Total Volume and the Volume for leveling 5 ft piles <br />What is the weighted average Haul Distance for the truck haul? <br />200 Change In Moment arm by removing 5 H. push = (VYHDt- Vd'HDdyVrem <br />What is loaded travel time based on haul distance & rolling resistance (min)? <br />0.2 <br />What is empty travel time based on haul distance & rolling resistance (min)? <br />0.1 <br />What is the manuever time for trucks at the loading area (min)? <br />0.70 <br />What is the length of time it takes a truck to dump (min)? <br />1.00 <br />What is the capacfry of the selected truck (avg w yds)? <br />64 <br />Calculated time for loading a truck (min) = <br />3.00 <br />Total Cycle Time (Maneuver+ Load + Loaded Haul + Empty Haul + Dump) = <br />4.94 <br />Calculated number of truckloads per hour = <br />12.1 <br />What is the efficiency of the haulage effort expressed as minutes per hour? <br />55 <br />Calculated Productivity of Loader/Truck Combination (cu yds /hour) = <br />712.8 <br />Total Fleet Hours Required <br />0.0 <br />Scraper Productivity <br />Source 2 <br />777F Haul <br />Source 3 <br />Truck Productivity <br />Source 4 <br />Source 5 <br />Total Fleet Hours <br />Haul Distance <br />Source <br />Volume <br />Haul Dist <br />Prod <br />Hours <br />What s the selected equipment to haul growth medium? <br />623 Scrapers <br />a <br />1.0 <br />1.2 <br />0.0 <br />0 <br />D <br />How many scrapers will be used? 3 <br />D.0 <br />What is the area for growth medium replacement? <br />63.4 acres <br />GM21 <br />7,000 <br />1,243 <br />291 <br />24 <br />o <br />What is the thickness of growth medium replacement? <br />0.5 feet <br />GM4 <br />44,144 <br />1,469 <br />257 <br />172 <br />ri n <br />Calculated quantity of growth medium required = <br />51,132 cu yds <br />Productivity <br />748.9 <br />0 <br />0 <br />748.9 <br />748.9 <br />548.8 <br />Fleet Hours Required <br />0.0 <br />12.3 <br />0 <br />0 <br />0 <br />TotallAverage <br />51,144 <br />1,438 <br />260.733044 <br />196 <br />362.9 <br />362.9 <br />Source 1 <br />Source 2 <br />777F Haul <br />Source 3 <br />Truck Productivity <br />Source 4 <br />Source 5 <br />Total Fleet Hours <br />Haul Distance <br />0 <br />1,243 <br />1,469 <br />0 <br />0 <br />Loaded Travel Time <br />0.0 <br />1.0 <br />1.2 <br />0.0 <br />0.0 <br />Regression at 1307.7 feet per min -6 %grade <br />Empty Travel Time <br />D.0 <br />0.4 <br />0.5 <br />0.0 <br />0.0 <br />Regression at 2,724 feet per min -6 %grade <br />Total Cycle Time <br />4.7 <br />6.2 <br />6.5 <br />4.7 <br />4.7 <br />Truckloads per hour <br />12.8 <br />9.7 <br />9.3 <br />12.8 <br />12.8 <br />Productivity <br />748.9 <br />569.4 <br />545.7 <br />748.9 <br />748.9 <br />548.8 <br />Fleet Hours Required <br />0.0 <br />12.3 <br />80.9 <br />0.0 <br />0.0 <br />93.2 <br />Productivity by Regression Equation <br />362.9 <br />339.9 <br />335.7 <br />362.9 <br />362.9 <br />