Earthworks of Parking Area Development Project
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This Presentation made by Forth Group to fulfill assignment of Construction Method Subject in Department of Civil Engineering, Sebelas Maret University (UNS) Surakarta
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- 1. Earthworks of Engineering Faculty Parking Area Presented by: 4th group
- 2. Introductions Nowadays, Parking Area has become one of infrastructures needed along increasingly of vehicles volume especially at Engineering Faculty. Problems arising from the provision of parking space itself is vacant land needed. Vacant land located in the north of 4th Building requires an efficient construction methods that can be implemented practically
- 3. Work Plan Step 1 • Identification Step 2 • Working Method Selection Step 3 • Heavy Equipment Analysis Step 4 • Cost Plan Analysis Step 5 • Scheduling Step 6 • Working Simulation
- 6. Identification The following are main working items: • Land clearing and top soil stripping The purpose is for clearing the area from organics, therefore it will ready for next work. • Soil heap work This work is done by collecting soil from the excavation to be made as a pile of soil on the surface of the ground that has lower elevation than planned.
- 7. Identification • Total Volume = Area x Depth = 610,13 x 1,65 = 1006,715 m3 • Stripping Volume = Area x Stripping Depth = 610,13 x 0,15 = 91,5195 m3 • Digging Volume = Total Volume – Stripping Volume = 1006,715 – 91,5195 = 915,195 m3
- 9. Working Method • Land clearing and top soil stripping Using the excavator as the primary heavy equipment which is used for stripping and digging. The main idea is to use heavy equipment as little as possible, but efficient. • Soil heap work LM that are transported by trucks to hauling site will condense by the compactor. The results are expected not to exceed a schedule of excavator.
- 10. Heavy Equipment
- 11. Heavy Equipment Analysis • Excavator • Truck • Compactor
- 12. Excavator Productivity of Backhoe Komatsu PC60-1 • Cycle time (T) = 0,4 • Bucket Capacity (BC) Stripping = 0,25 • Bucket Capacity (BC) Digging = 0,28 • Siteplan Management Condition = 0,75 (clay) • Bucket Factor (BF) Stripping = 0,5 • Bucket Factor (BF) Digging = 0,8 • Productivity of Stripping 60/T×BC×JM×BF = 60/0,4×0,25×0,75×0,5 = 14 m3/hour • Productivity of Digging 60/T×BC×JM×BF = 60/0,4×0,28×0,75×0,8 = 25,2 m3/hour
- 13. Truck Truck Productivity • Distance = 500 m • Average Speed = 20 km/hour • Capacity = 5 m3 • Cycle Time • Loading = 11,9 minutes • Single Trip Time = 3 minutes • Position Setting = 5 minutes + 19,9 minutes Amount trip/hour = 60/15,9 = 3,01 ≈ 3 trip
- 14. Compactor Productivity of Compactor Vibro 10 ton • Effective Width of Wheel (L) = 80 cm • Compactor Speed (V) = 2 km/hour • Total Tracks of Compacting (N) = 10 • Layer Heights = 20 cm • Productivity F= (L×V×JM)/N=(0,8×2000×0,75)/10= 120 m2/layer/hour Compactor Productivity = 0,2×120 = 24 m2/hour
- 15. No. Work Equipment Volume (m3) Productivity (m3/hour) Number of Equipment Time (hour(s)) 1 Stripping Backhoe Komatsu PC 60-1 91,5195 14 1 6,5 2 Digging Backhoe Komatsu PC 60-1 915,195 25,2 1 37 3 Loading Truck 1143,994 15 2 77 4 Compacting Vibro 10 ton 823,6755 24 1 35 Equipment Demand
- 16. Cost No. Work Equipment Number of Equipment Time of Rent (hour(s)) Rent Cost (all in) (Rp) Total Cost (Rp) 1 Stripping Backhoe Komatsu PC 60-1 1 7 190.000 1.330.000 2 Digging Backhoe Komatsu PC 60-1 1 37 190.000 7.030.000 3 Loading Truck 2 77 50.000 7.700.000 4 Compacting Vibro 10 ton 1 35 240.000 8.400.000 TOTAL 24.460.000
- 17. No. Work Ratio Time (day(s)) 1 2 3 4 5 6 7 1 Stripping 0,055 1 2 Digging 0,287 6 3 Loading 0,315 6 4 Compacting 0,343 5 TOTAL 1 7 Barchart and S-Curve
- 19. Mob Demob
- 20. Stripping
- 21. Digging
- 22. Loading
- 23. Loading
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- 25. Total Cost No. Work Equipme nt Number of Equipme nt Cost (Rp) Mob deMob (Rp) Total Cost (Rp) 1 Stripping Backhoe Komatsu PC 60-1 1 1.330.000 1.500.000 2.830.000 2 Digging Backhoe Komatsu PC 60-1 1 7.030.000 - 7.030.000 3 Loading Truck 2 7.700.000 - 7.700.000 4 Compactin g Vibro 10 ton 1 8.400.000 1.500.000 9.900.000 10 % of Total Cost 2.746.000 TOTAL 30.206.000