(6) Step 6: Determine Equipment and Operator Efficiency Factor, Table 7-2. = Efficiency Average Operator, working during daylight hours factor 0.75 TABLE # 7-2 EQUIPMENT AND OPERATOR EFFICIENCY FACTORS TYPE OF DOZER OPERATOR DAY ABILITIES EXCELLENT 1.0 0.75 TRACKED AVERAGE 0.75 0.56 0.60 0.45 POOR Note: These factors include operator efficiency and visibility (dust, rain, snow, fog, and darkness) with a job efficiency of a 60-minute hour. (ON #165, 166) (7) Step 7: hours required (STEP 1) (STEP 4) 14.55 (acres) X Production 2.50 (hr/acre) X 1.6 58.20 = 38.80 total hours = Efficiency 0.75 X 2 Number of dozers 1.50 NOTE: NEVER ROUND OFF TIME (STEP 6) (STEP 2) NOTE: If estimating clearing and grubbing only, omit 1.6 from numerator of equation. The 1.6 hours is there for disposal and stripping of vegetation. (8) STEP 8: Production (Days) DAYS Hours Required 38.80 : 8 Hours Worked a Day = 4.85 OR 5 NOTE: ROUND DAYS TO THE NEXT FULL DAY INTERIM TRANSITION: Are there any questions over determining dozer production estimations? Now let’s move into some practical application on these steps. (ON SLIDE #167, 168)
(6) Step 6: Determine Equipment and Operator Efficiency Factor, Table 7-2. Average Operator, working during daylight hours = Efficiency factor 0.75 TABLE # 7-2 EQUIPMENT AND OPERATOR EFFICIENCY FACTORS TYPE OF DOZER OPERATOR ABILITIES DAY TRACKED EXCELLENT AVERAGE POOR 1.0 0.75 0.60 0.75 0.56 0.45 Note: These factors include operator efficiency and visibility (dust, rain, snow, fog, and darkness) with a job efficiency of a 60-minute hour. (ON #165, 166) (7) Step 7: hours required (STEP 1) (STEP 4) 14.55 (acres) X Production 2.50 (hr/acre) X 1.6 = 58.20 = 38.80 total hours Efficiency 0.75 X 2 Number of dozers 1.50 (STEP 6) (STEP 2) NOTE: NEVER ROUND OFF TIME NOTE: If estimating clearing and grubbing only, omit 1.6 from numerator of equation. The 1.6 hours is there for disposal and stripping of vegetation. (8) STEP 8: Production (Days) Hours Required 38.80 : 8 Hours Worked a Day = 4.85 OR 5 DAYS NOTE: ROUND DAYS TO THE NEXT FULL DAY INTERIM TRANSITION: Are there any questions over determining dozer production estimations? Now let’s move into some practical application on these steps. (ON SLIDE #167, 168)
Complete%20Production%20Estimations%20Detailed%20Outline.docx