In the previous discussion we have discussed about the needs of labor and materials on the work of excavation, backfill, foundation, walls, reinforced concrete work and other work.
In accordance with the picture below then we will calculate the needs of labor and materials needed.
The work we will count is
- Soil excavation work [1] [2]
The form of excavation is carried out in accordance with the one shown in the drawing, If at the place of excavation found pipe disposal or wires that are still working then you should immediately notify the authorized agency to get further instructions.
- Backfill work [2]
Backfill work is done with upcoming ground, backfill done several layers, then each layer is compacted with compactor and others, to produce maximum density and no decrease of floor.
Backfill work under the floor is done after excavation work foundation soil is completed
'- Stone pairs [3]
Stone used comes from rivers or mountains with shapes and sizes corresponding to the cross section to be worked on, the stone must be clean of mud and other organic substances that can damage the structure.
- Mountain rock foundation [3]
Mountain rock used in this work must be really hard, strong, clean, free of cracks and should come from reliable sources of retrieval. Prior to installation, the stone must be moistened with water between three and four hours before use in such a way that each stone is fully exposed to water.
- Reinforced concrete work [4]
Slab dim. 15/20 cm
The reinforced steel that has been produced must match the drawing of the plan.
Installation of previously manufactured formwork must be appropriate to the size of the slab and the side-support pair as a binder. Installation should be straight and strong so as not to melt at the time of casting. The casting in accordance with the proportion of the mixture.
Column (Practical column) dim. 13x13 cm [5]
The making of marks on the basis should be precise on the axles specified in accordance with the plan.
The reinforcement and brace columns must match the image. Installation of special formwork on double-sided practical columns (formerly formwork oiled) and reinforced with reinforcing wood on column sides.
- Wall work [6]
Bricks are soaked for a few minutes in water to prevent the cement from being absorbed by the bricks so that the adhesion will decrease.
Preparing the mounting position on the column to position the masonry correctly and in accordance with the drawing plan.
- And Plastering [7]
In accordance with the picture above, how much labor and materials needed to complete the works?
I use technical analysis in accordance with Indonesian National Standard to complete the calculation of labor and material requirements. [8]
- Soil excavation
Is known.
| Information | Amount |
|---|---|
| Length x width x height | 16.00 x 0.70 x 0.70 |
| Amount | 7,840 m3 |
Coefficient of 1m3 excavation of soil.
| Information | Amount |
|---|---|
| Workers | 0.750 Person per day |
| Overseer | 0.025 Person per day |
Amount as needed
| Items | Information | Amount |
|---|---|---|
| Workers | 0.750 Person per day x 7,840 m3 | 5,880 Person |
| Overseer | 0.025 Person per day x 7,840 m3 | 0.196 Person |
- Backfill work
Volume a (backfill foundation work)
Is known.
| Information | Amount |
|---|---|
| 1/3 backfill | 7,840 / 3 |
| Amount | 2,613 m3 |
1m3 backfill coefficient a
| Information | Amount |
|---|---|
| Workers | 0.750 Person per day |
| Overseer | 0.025 Person per day |
Amount as needed
| Items | Information | Amount |
|---|---|---|
| Workers | 0.750 Person per day x 2,613 m3 | 1,960 Person |
| Overseer | 0.025 Person per day x 2,613 m3 | 0.065 Person |
Volume b
Is known.
| Information | Amount |
|---|---|
| Length x width x height | 3.85 x 3.85 x 0.10 |
| Amount | 1,482 m3 |
1m3 backfill coefficient
| Information | Amount |
|---|---|
| Workers | 0.300 Person per day |
| Overseer | 0.010 Person per day |
| Soil | 1,200 M3 |
Amount as needed
| Items | Information | Amount |
|---|---|---|
| Workers | 0.300 Person per day x 1,483 m3 | 0.445 Person |
| Overseer | 0.010 Person per day x 1,483 m3 | 0.015 Person |
| Soil | 1,200 x 1,483 m3 | 1,779 m3 |
- Sandfill work
Volume Sandfill work
Is known
| Information | Amount |
|---|---|
| Length x width x height | 3.85 x 3.85 x 0.05 |
| Amount | 0.741 m3 |
Coefficient of 1m3 sandfill work.
| Information | Amount |
|---|---|
| Workers | 0.300 Person per day |
| Overseer | 0.010 Person per day |
| Sand | 1,200 M3 |
Amount as needed
| Items | Information | Amount |
|---|---|---|
| Workers | 0.300 Person per day x 0.741 m3 | 0.222 Person |
| Overseer | 0.010 Person per day x 0.741 m3 | 0.007 Person |
| Sand | 1,200 x 0.741 m3 | 0.887 |
- Works stone pairs
Volume stone pairs work
Is known.
| Information | Amount |
|---|---|
| Length x width x height | 16.00 x 0.70 x 0.10 |
| Amount | 1,120 m3 |
Coefficient of 1m3 stone pairs is required.
| Information | Amount |
|---|---|
| Workers | 0.780 Person per day |
| Stonemason | 0.390 Person per day |
| Foreman | 0.039 Person per day |
| Overseer | 0.044 Person per day |
| Mountain rock | 1,200 m3 |
| Sand | 0.432 m3 |
Amount as needed.
| Items | Information | Amount |
|---|---|---|
| Workers | 0.780 Person per day x 1,120 m3 | 0.874 Person |
| Stonemason | 0.390 Person per day x 1,120 m3 | 0.437 Person |
| Foreman | 0.039 Person per day x 1,120 m3 | 0.044 Person |
| Overseer | 0.044 Person per day x 1,120 m3 | 0.044 Person |
| Mountain rock | 1,200 m3 x 1,120 m3 | 1,344 Person |
| Sand | 0.432 x 1,120 m3 | 0.484 Person |
- Mountain rock foundation work
Volume Mountain rock foundation work
| Information | Amount |
|---|---|
| Average width | (0.25 + 0.60) / 2 = 0.425 m |
| Length x width x height | 16.00x0,425x0,60 |
| Amount | 4,080 m3 |
Coefficient 1m3 Mountain rock foundation
| Information | Amount |
|---|---|
| Workers | 1,500 Person per day |
| Stonemason | 0.750 Person per day |
| Foreman | 0.075 Person per day |
| Overseer | 0.075 Person per day |
| Mountain rock | 1,200 m3 |
| Portland cement | 163,000 Kg |
| Sand pairs | 0,520 m3 |
Amount as needed.
| Items | Information | Amount |
|---|---|---|
| Workers | 1,500 Person per day x 4,080 m3 | 6,120 Person |
| Stonemason | 0.750 Person per day x 4,080 m3 | 3,060 Person |
| Foreman | 0.075 Person per day x 4,080 m3 | 0.306 Person |
| Overseer | 0.075 Person per day x 4,080 m3 | 0.306 Person |
| Mountain rock | 1,200 m3 x 4,080 m3 | 4,896 m3 |
| Portland cement | 163,000 Kg x 4,080 m3 | 665,040 Kg |
| Sand pairs | 0.520 m3 x 4,080 m3 | 2,122 m3 |
At this first stage calculation we have completed the calculation
- Soil excavation
- Backfill work
- Mountain rock fondation
In accordance with the work and working drawings above then the needs of labor and materials for this stage is.
| Items | Amount |
|---|---|
| Workers | 15,501 Person |
| Stonemason | 3,497 Person |
| Foreman | 0.350 Person |
| Overseer | 0.633 Person |
| Soil | 1,779 m3 |
| Sand | 1,373 m3 |
| Mountain rock | 6,240 m3 |
| Portland cement | 665,040 Kg |
| Sand pairs | 2,122 m3 |
to be continued ...
This calculation is just an example and can be used by anyone, this calculation is in accordance with technical analysis of Indonesian National Standart.[8]
Thanks to friends who have visited this blog and to scientists who are willing to sacrifice their time to realize a better civilization.
This is all I can write on this occasion, for all the mistakes and lack of writing as a servant of God, I apologize.
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