Post on 25-Dec-2014
description
Efficiency Analysis Half Slab Method of Precast
Concrete SlabBayu Pinasthika (1200960234)
Friska Oktaviana (1200986681)
Outline
1. Project Spesification
2. Project Location
3. Project Site Plan
4. Project Organization
5. Structure Coordination
6. Management Construction
7. Half Slab Construction Method
8. Half Slab Spesification
9. Half Slab Construction Documentation
10. Safety, Health & Environment
11. Quality Control
12. Half Slab Price Comparision
13. Conclusion
14. Recomendation
Project Spesification
Project Name : Puri Parkview Apartement
(Tower C)
Build Type : Apartement
Location : Jl. Pesanggarahan No. 88
Kebon Jeruk, Jakarta Barat
Number of Floors : 24th Floors
Floor Area : 18.945 m2
Number of Basement : 1st Floor
SMA 112
Jalan TolJakarta -
Tangerang
Jl. Pesanggrahan
Sungai Pesanggrahan
Project Site PlanJl. Pesanggrahan No. 88
Kebon Jeruk, Jakarta Barat
Project Site Plan
Tower C
Project Organization
Owner• KSO PT. Pelaksana Jaya Mulia• PT. Alam Jaya Perkasa
Construction Management
• PT. Perentjana Djaja
Architect Consultant
• PT. Megatika International
Landscape Consultant
• PT. Elvolver
Design & Built Contractor
• PT. Catur Bangun Mandiri
Foundation Planner
• PT. Geotechnical Engineering Service
Structure Planner
• PT. Baganusa Dayaprima
MEP Planner • PT. Metakom Pranata
Structure Coordination
Owner
KSO PT. Pelaksana Jaya Mulia
PT. Alam Jaya Perkasa
Consultant Architect
Contractor
PT. Catur Bangun Mandiri
Consultant Supervision
PT. Perentjana Djaja
Planning Consultant
Management Construction
Management
Construction
Quality
CostTime
Half Slab Construction Method
Production
Erection
Preparation
Move
Installation
Time Back
Topping
Wire Mesh Installation
Concrete Pouring
Half Slab Spesification
Area : 18.945 m2
Volume Foundry Plans : 1.326,15 m3
Steel Bar Quality : BJTD 40
Thick : 7 cm
Concrete Quality : K-300 / 24.900 MPa
Concrete Slump : 10 cm ± 2 cm
Thick Concrete Cover : 3 cm
Admixture (Fly Ash) : Maximum 15%
Half Slab Construction Documentation
Production Process
Half Slab Construction Documentation
Erection : Preparation Process
Half Slab Construction Documentation
Erection : Moving Process
Half Slab Construction Documentation
Erection : Intallation Process
Half Slab Construction Documentation
Erection : Time Back Process
Half Slab Construction Documentation
Topping : Preparation Process
Half Slab Construction Documentation
Topping : Wire Mesh Installation
Half Slab Construction Documentation
Topping : Preparation Concrete Pouring
Half Slab Construction Documentation
Topping : Concrete Pouring
Safety, Health & Environment
Provide personal safety tools such as hats, shoes, work clothes, etc. for workers and guests.
Provide safety facilities such as barrier for holes, signs, railings, etc.
Provide fire extinguishers for emergency situation.
Provide first aid include auxiliary equipment, medicines, etc.
Keep the project clean by provide trash, periodically dispose off the project, etc.
Quality Control
Check on the tensile strength of steel every material.
Examination of rebar installation before casting.
Testing slump value of concrete before casting.
Testing the value of concrete compressive strength test every concrete mixer came to the project site.
4 cylinder concrete mold every 1 concrete mixer
1 concrete mixer has a volume 7 m2 and 9 m2.
All activities related to concrete casting is controlled.
Check every concrete curing process.
Physical inspection of the finished concrete.
Half Slab Price Comparison
Unit Price Analysis
Price Per Component Analysis
Half Slab Method Conventional Method
Topping Analysis
Total Price Analysis
Unit Price Analysis
Unit Indeks Price Material Work
Material Concrete m3 1,000 716.800Rp 716.800Rp 716.800Rp -Rp
Materials to Make Concrete 1 m3
Description
TotalSub-Total
716.800Rp
Unit Indeks Price Material Work
Material Wiremesh m2 1,000 43.200Rp 43.200Rp
43.200Rp -Rp Total
Rebar Installation 1 m2 Wiremesh M6Description
Sub-Total43.200Rp
Unit Price Analysis
Unit Indeks Price Material Work
Plate 10 cm m3 0,008 9.155Rp 73Rp Hollow Steel 50x50x3 Kg 9,394 9.155Rp 86.002Rp
Kaso 5/7 m3 0,005 50.860Rp 254Rp Formwork Oil Liter 1,155 8.200Rp 9.471Rp Worker OH 0,007 45.000Rp 315Rp Carpenter OH 0,076 60.000Rp 4.560Rp Foreman OH 0,008 65.000Rp 520Rp Overseer OH 0,001 100.000Rp 100Rp
95.801Rp 5.495Rp Total
Make 1 m2 Formwork for Concrete Slab PrecastDescriptionMaterial
Labor
Sub-Total101.296Rp
Unit Price Analysis
Unit Indeks Price Material WorkWorker OH 0,053 45.000Rp 2.385Rp Carpenter OH 0,018 60.000Rp 1.080Rp Overseer OH 0,005 100.000Rp 500Rp
-Rp 3.965Rp 3.965Rp
Installation Cost + Open Formwork 1 Unit Component for Precast Slab
Labor
Total
Description
Sub-Total
Unit Indeks Price Material WorkWorker OH 0,064 45.000Rp 2.880Rp Stonemason OH 0,244 60.000Rp 14.640Rp Vibrator Worker OH 0,128 60.000Rp 7.680Rp Foreman OH 0,034 65.000Rp 2.210Rp Overseer OH 0,073 100.000Rp 7.300Rp
-Rp 34.710Rp
Cost of Pouring Concrete 1 Unit Component for Precast Slab
Labor
Total
Description
Sub-Total34.710Rp
Unit Price Analysis
Unit Indeks Price Material WorkTower Crane Rental Unit/Day 0,067 250.000Rp 16.750Rp Solar Liter 6,676 9.000Rp 60.084Rp Crane Operator OH 0,067 100.000Rp 6.700Rp Worker OH 0,067 45.000Rp 3.015Rp Erection Worker OH 0,134 60.000Rp 8.040Rp Overseer OH 0,067 100.000Rp 6.700Rp
76.834Rp 24.455Rp
Installation / Erection 1 Unit Component for Precast Slab
Material
Labor
Total
Description
Sub-Total101.289Rp
Unit Price Analysis
Description Unit Volume Unit Price Total
Concrete m3 1 751.510Rp 751.510Rp
Wiremesh Installation m2 20 43.200Rp 864.000Rp
Pouring Concrete m3 1 34.710Rp 34.710Rp
1.650.220Rp
Concrete Topping 1 m3
Total Price
Half Slab Unit Price
Calculate cost of 1 unit production concrete component.
Concrete (m3)
Pouring Concrete (unit)
Wire Mesh Installation (m2)
Formwork Production (m2)
Formwork Installation (unit)
The calculation according the volume of floor plate.
Half Slab Unit Price
Example : Half Slab S1
Description Unit Volume Unit Price Total
Concrete m3 0,6314 716.800Rp 452.587,52Rp
Pouring Concrete buah 1 34.710Rp 34.710,00Rp
Wiremesh m2 18,04 43.200Rp 779.328,00Rp
Formwork Production m2 0,903 106.791Rp 96.431,92Rp
Formwork Installation buah 1 3.965Rp 3.965,00Rp 1.367.022,44Rp
Pekerjaan Produksi 1 Buah Komponen Beton Plat Lantai S1
Total
Conventional Unit Price
Example : Part S1
Description Unit Volume Unit Price Total
Concrete m3 1,0824 716.800Rp 775.864,32Rp
Poruing Concrete buah 1 34.710Rp 34.710,00Rp
Wiremesh Installation m2 18,04 43.200Rp 779.328,00Rp
Formwork Production m2 10,568 106.791Rp 1.128.563,15Rp
Formwork Installation buah 1 3.965Rp 3.965,00Rp 2.722.430,47Rp
Pekerjaan Produksi 1 Buah Komponen Beton Plat Lantai S1
Total
Half Slab PriceNo. Description Unit Quantity Unit Price Total1 Half Slab Concrete Component Production
Concrete Plate S1 Each 5 Rp 1.367.022,44 Rp 6.835.112,20 Concrete Plate S2 Each 8 Rp 1.490.199,46 Rp 11.921.595,65
Concrete Plate S3 Each 1 Rp 1.551.787,96 Rp 1.551.787,96
Concrete Plate S4 Each 2 Rp 1.397.816,69 Rp 2.795.633,39 Concrete Plate S5 Each 21 Rp 1.459.405,20 Rp 30.647.509,24 Concrete Plate S6 Each 9 Rp 1.798.142,00 Rp 16.183.277,99
Concrete Plate S7 Each 1 Rp 2.106.084,54 Rp 2.106.084,54 Concrete Plate S8 Each 8 Rp 2.381.378,15 Rp 19.051.025,22 Concrete Plate S9 Each 1 Rp 899.912,22 Rp 899.912,22
Concrete Plate S10 Each 1 Rp 2.266.672,48 Rp 2.266.672,48
Concrete Plate S11 Each 2 Rp 1.463.732,78 Rp 2.927.465,56 Concrete Plate S12 Each 1 Rp 899.912,22 Rp 899.912,22
Concrete Plate S13 Each 3 Rp 1.166.457,70 Rp 3.499.373,11
Concrete Plate S14 Each 1 Rp 1.213.051,17 Rp 1.213.051,17 Concrete Plate S15 Each 1 Rp 507.576,45 Rp 507.576,45 Concrete Plate S16 Each 1 Rp 419.233,37 Rp 419.233,37 Concrete Plate S17 Each 1 Rp 999.278,46 Rp 999.278,46 Concrete Plate S18 Each 1 Rp 930.519,72 Rp 930.519,72 Concrete Plate S19 Each 1 Rp 804.776,82 Rp 804.776,82
Concrete Plate S20 Each 1 Rp 1.082.188,80 Rp 1.082.188,80
2 Half Slab Installation Each 70 Rp 101.289,00 Rp 7.090.230,00
3 Toping Concrete Work m3 35,796 Rp 1.650.220,00 Rp 59.071.275,12
Total Price Rp 173.703.491,69
Conventional Unit PriceNo. Description Unit Quantity Unit Price Total
1 Concrete Plate S1 Each 5 Rp 2.722.430,47 Rp 13.612.152,33
2 Concrete Plate S2 Each 8 Rp 2.973.258,23 Rp 23.786.065,84
3 Concrete Plate S3 Each 1 Rp 3.098.672,11 Rp 3.098.672,11
4 Concrete Plate S4 Each 2 Rp 2.785.137,41 Rp 5.570.274,81
5 Concrete Plate S5 Each 21 Rp 2.910.551,29 Rp 61.121.577,06
6 Concrete Plate S6 Each 9 Rp 3.600.327,64 Rp 32.402.948,76
7 Concrete Plate S7 Each 1 Rp 4.227.397,05 Rp 4.227.397,05
8 Concrete Plate S8 Each 8 Rp 4.787.227,78 Rp 38.297.822,27
9 Concrete Plate S9 Each 1 Rp 1.775.397,43 Rp 1.775.397,43 10 Concrete Plate S10 Each 1 Rp 4.553.964,98 Rp 4.553.964,98
11 Concrete Plate S11 Each 2 Rp 2.921.125,34 Rp 5.842.250,68
12 Concrete Plate S12 Each 1 Rp 1.775.397,43 Rp 1.775.397,43
13 Concrete Plate S13 Each 3 Rp 2.316.850,64 Rp 6.950.551,92
14 Concrete Plate S14 Each 1 Rp 2.408.895,76 Rp 2.408.895,76
15 Concrete Plate S15 Each 1 Rp 973.283,74 Rp 973.283,74
16 Concrete Plate S16 Each 1 Rp 795.074,39 Rp 795.074,39
17 Concrete Plate S17 Each 1 Rp 1.967.432,54 Rp 1.967.432,54 18 Concrete Plate S18 Each 1 Rp 1.827.360,31 Rp 1.827.360,31 19 Concrete Plate S19 Each 1 Rp 1.573.260,81 Rp 1.573.260,81
20 Concrete Plate S20 Each 1 Rp 2.135.201,71 Rp 2.135.201,71
Total Price Rp 214.694.981,91
Half Slab Price Comparison
Calculation of Price Efficiency
Conclusion
All members of the organization do the work according to the position.
Construction project use the half slab method because the cost more efficient.
During the construction period in the field, quality assurance looks very good.
From the analysis, concrete plate with half slab method is more efficient until 19,091% than convetional price.
Recomendation
Quantity of workers must be calculated correctly.
Use safety straps should be done when working on the high level.
Ban on smoking at work must be done properly.
Perform a quality selection of tower crane.
Addition of tower crane because the project has reached a high level.
Because half slab method is more efficient than conventional method, then this method can be an alternative in future projects.
Thank YouBayu Pinasthika (1200960234)
Friska Oktaviana (1200986681)