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Excavation Data
Excavation to Reduce Level
Trench: 10m2x1m deep
Excavation Output: 1.75-2.00 hour/m3
Required 1 General Construction Worker at RM52.50 per day
Allow 15% profit including overhead
5m3 lorry hire rate RM400 per day
Return trip 30 minutes
Loading trip require 60 minutes
Unloading trip require 60 minutes
Allow 15% idle factor
Allow 2 unskilled labourers for loading and unloading at RM52.50 per day per person
Excavation to Pit for Pad Foundation and Column Stump
Pit size: 0.45x0.45x2.1m deep and 9 nos
Column stump: 0.25x0.25x0.16m deep
Allow 13% compaction for ordinary soil
Excavation output: 3.00-4.50 hour/m3
Required 2 General Construction Worker at RM52.50 per day
Additional 25% of time required to excavate and backfill
Allow 15% profit including overhead
Excavation to Trench for Ground Beam
Trench size: 66x0.25x0.55
Excavation Output: 2.00-2.75 hour/m3
Required 2 General Construction Worker at RM52.50 per day
Allow 15% profit including overhead
Calculation:-
Excavation to Reduce Level
Quantity
Excavation < 1.50m deep 10m2 x 1m
10m3
Time Required
Excavation < 1.50m deep 10m3 x 1.75 hour/m3
17.50 hour
Labour Cost
Hour rate for General Construction Worker RM52.50/8 hour
RM6.56/hour
Hour required x hour rate RM6.56/hour x 17.50 hour
RM114.80
Removal of Surplus
Trench size 10m3
No of trips 10m3 / 5m3/trip
2 trip
Time Required 2 trip x (1+1+0.5)hour x 1.15 hour
5.75 hour
Per day 5.75 hour/ 8 hour/day
0.72
≈1 day
Allow 2 unskilled labourers for loading and unloading at RM52.50 per day per person RM52.50/day x 1 day x 2 labourers
RM105
Truck cost Rm400/day x 1 day
RM400
Total Cost
Excavate and Removal of surplus RM114.80+RM105+RM400
RM619.80
Unit rate RM619.80/10
RM61.98
Allow 15% profit including overhead RM61.98x0.15
RM9.30
71.28/m3
Excavation to Pit for Pad Foundation and Column Stump
Quantity
Pit Size (0.45mx0.45mx2.10m) x 9nos
3.83m3
Excavation <1.50m deep 0.45mx0.45mx1.50mx9nos
2.73m3
Excavation >1.50m - 3.00m deep 0.45mx0.45mx(2.10m-1.50m)x9nos
1.09m3
Backfill [(0.45x0.45x1.6)-(0.25x0.25x1.6)]x9
2.02m3
Allow 13% compaction 2.02x13%
0.26m3
2.28m3
Time Required
Excavation <1.50m deep 2.73m3 x 3.00hour/m3
8.19 hour
Excavation >1.50m - 3.00m deep 1.09m3x3.50hour/m3
3.82 hour
Backfill 2.28m3x1hour/m3
2.28hour
Total hour 14.29hour
Additional 25% time to backfill and excavate 14.29hourx1.25
17.86hour
Cost
Hourly rate of a General Construction Worker RM52.50/8hours
RM6.56/hour
Hour required x 2 General Construction Worker 17.86 hour x RM6.56/hourx2
RM234.32
Allow 15% profit including overhead RM234.32x1.15
RM269.47
Unit Rate RM269.47/3.83m3
RM70.36/m3
Excavate to Trench for Ground Beam
Quantity
Excavate <1.50m deep 66mx0.25mx0.55m
9.08m3
Time Required
Excavate <1.50m deep 9.08m3 x 2.00 hour/m3
18.15 hour
Cost
Hour rate of General Construction Worker RM52.50/8 hour
RM6.56/hour
Hour rate x Time required 18.15 hour x RM6.56/hour
RM119.06
Allow 15% profit including overhead RM119.06x1.15
RM136.92
Unit Rate RM136.92/9.08m3
RM15.08/m3

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Excavation

  • 1. Excavation Data Excavation to Reduce Level Trench: 10m2x1m deep Excavation Output: 1.75-2.00 hour/m3 Required 1 General Construction Worker at RM52.50 per day Allow 15% profit including overhead 5m3 lorry hire rate RM400 per day Return trip 30 minutes Loading trip require 60 minutes Unloading trip require 60 minutes Allow 15% idle factor Allow 2 unskilled labourers for loading and unloading at RM52.50 per day per person Excavation to Pit for Pad Foundation and Column Stump Pit size: 0.45x0.45x2.1m deep and 9 nos Column stump: 0.25x0.25x0.16m deep Allow 13% compaction for ordinary soil Excavation output: 3.00-4.50 hour/m3 Required 2 General Construction Worker at RM52.50 per day Additional 25% of time required to excavate and backfill Allow 15% profit including overhead Excavation to Trench for Ground Beam Trench size: 66x0.25x0.55 Excavation Output: 2.00-2.75 hour/m3 Required 2 General Construction Worker at RM52.50 per day Allow 15% profit including overhead
  • 2. Calculation:- Excavation to Reduce Level Quantity Excavation < 1.50m deep 10m2 x 1m 10m3 Time Required Excavation < 1.50m deep 10m3 x 1.75 hour/m3 17.50 hour Labour Cost Hour rate for General Construction Worker RM52.50/8 hour RM6.56/hour Hour required x hour rate RM6.56/hour x 17.50 hour RM114.80 Removal of Surplus Trench size 10m3 No of trips 10m3 / 5m3/trip 2 trip Time Required 2 trip x (1+1+0.5)hour x 1.15 hour 5.75 hour Per day 5.75 hour/ 8 hour/day 0.72 ≈1 day Allow 2 unskilled labourers for loading and unloading at RM52.50 per day per person RM52.50/day x 1 day x 2 labourers RM105 Truck cost Rm400/day x 1 day RM400 Total Cost Excavate and Removal of surplus RM114.80+RM105+RM400 RM619.80 Unit rate RM619.80/10 RM61.98 Allow 15% profit including overhead RM61.98x0.15 RM9.30 71.28/m3
  • 3. Excavation to Pit for Pad Foundation and Column Stump Quantity Pit Size (0.45mx0.45mx2.10m) x 9nos 3.83m3 Excavation <1.50m deep 0.45mx0.45mx1.50mx9nos 2.73m3 Excavation >1.50m - 3.00m deep 0.45mx0.45mx(2.10m-1.50m)x9nos 1.09m3 Backfill [(0.45x0.45x1.6)-(0.25x0.25x1.6)]x9 2.02m3 Allow 13% compaction 2.02x13% 0.26m3 2.28m3 Time Required Excavation <1.50m deep 2.73m3 x 3.00hour/m3 8.19 hour Excavation >1.50m - 3.00m deep 1.09m3x3.50hour/m3 3.82 hour Backfill 2.28m3x1hour/m3 2.28hour Total hour 14.29hour Additional 25% time to backfill and excavate 14.29hourx1.25 17.86hour Cost Hourly rate of a General Construction Worker RM52.50/8hours RM6.56/hour Hour required x 2 General Construction Worker 17.86 hour x RM6.56/hourx2 RM234.32 Allow 15% profit including overhead RM234.32x1.15 RM269.47 Unit Rate RM269.47/3.83m3 RM70.36/m3
  • 4. Excavate to Trench for Ground Beam Quantity Excavate <1.50m deep 66mx0.25mx0.55m 9.08m3 Time Required Excavate <1.50m deep 9.08m3 x 2.00 hour/m3 18.15 hour Cost Hour rate of General Construction Worker RM52.50/8 hour RM6.56/hour Hour rate x Time required 18.15 hour x RM6.56/hour RM119.06 Allow 15% profit including overhead RM119.06x1.15 RM136.92 Unit Rate RM136.92/9.08m3 RM15.08/m3