Monday, June 17, 2019

MOCKUP BETTERPAD-RAY - Make a Budget Plan and Calculate Material Requirements for Mosques



The Budget Plan can be made according to the list of analysis of work units that have been made previously. The analysis made is the amount of material needs and workers for each type of work in the construction process by knowing the price of each need along with the total price needed for each type of work. The total price for each type of work on the work unit analysis list is the number value that is filled in the unit price column to list the Cost Budget Plan.

Example Table Price List of Work Unit Analysis (Examples are only for one type of work)
Number
Job Description
Coefficient
Unit
Unit Price
Total Price
2
1 m2 – Location Cleaning

Workers
0,02
person



Mason
0,01
person



Broom
0,03
piece



Shovel
0,03
piece



Total


A brief explanation, for example there cannot be 0.02 people. So the right way to understand is that it takes 2 workers and 1 mason to clean an area of 100 m2.

God willing, if it is realized, the process of building a building complex based on the Betterpad-Ray Maket design (Benteng Terpadu Raya / Great Integrated Fortress "Mural Wall") will use the Budget Plan, especially for the Shahada Mosque (Masjid Syahadat) design.

In making the Budget Plan, there are five main things that must be considered in calculating costs, namely as follows.
1.      Calculation of material related to the calculation of the amount of material used, including the price. The material used must be suitable for construction needs and of course there are main materials that must be used for (modern) buildings, such as cement, brick and sand. In calculating the amount of material must match between the material form and the unit used. For example, material in the form of grains such as sand and soil uses units of volume, namely m^3 or certain units according to the area or agreement. Material prices per unit must also be known in order to be able to calculate the price of a number of material needed and meticulously at the time of purchase. Suppose 1 cement brick is worth 3000 rupiah, then the price of 100 cement blocks is 300,000 rupiah.

2.      Calculation of workers costs related to the length of work of workers to complete a type of work in units of time and costs that must be incurred. The purpose of the workers want to work in a construction course is to get money for their lives. Whereas the owner or construction planner needs worker's power so the building can be made. Then the workers must get a decent wage in accordance with the length of work. Maybe in 8 hours a day or as needed, the most important thing is that it is not normal and not good if the work is done until night. The workers are divided into their respective types of work and are well coordinated so that the construction runs effectively and efficiently and each worker can work steadily. In addition, workers must get nutritious and good food and drinks to obtain energy. If wages and consumption are given properly and properly, then workers can work with enthusiasm. Wages or salaries are also adjusted to responsibility. The greater the responsibility, the more salary.

3.      Calculation of equipment is the calculation of the type, amount, and length of equipment used and the cost. Equipment is indeed something that must be in construction as needed. Equipment makes a job can be carried out easily and smoothly. Each type of equipment is in accordance with the type of work, for example shovels for cement and sand as wall material, screwdrivers and pliers for electrical installations, and others. Equipment used in construction should belong to the planner or owner of the construction at his own expense in order to be able to calculate his expenses and know the development details properly according to his equipment. The number of equipment and the number of workers must be appropriate so that all workers obtain equipment according to the type of work without scrambling or lacking. It is recommended that the amount of equipment be exceeded from the calculation as a backup or can be used later. Each equipment must also know the length of its use and its durability. Tools that are easily run out like sandpaper must be provided in large quantities. As for machine tools, the energy costs and the duration of use must be calculated.

4.      Calculation of overhead is the calculation of unexpected costs that need to be anticipated, both related to weather and finance. Although there is already planning, there are certainly things that are not according to plan in practice. Then there must be additional fees reserved if there is a sudden need. Things related to the weather, for example when it rains, the building cover (usually a semi-finished building with a layer of cement that is still wet) is needed which can be made of tarpaulin and the rain factor is a common thing. While an example of a financial factor is that the price of existing materials can certainly rise unexpectedly. In addition energy use such as fuel for material transport vehicles or electricity for machine tools can cause unexpected costs, usually due to a longer time than usual.

5.      For contractor service estimators, there is one additional factor, namely profit. This does not need to be done for development that is done alone.

God willing, the calculation of the cost of building the Shahada Mosque (Masjid Syahadat) is in accordance with the above method correctly. For the right purpose, you must use the right way. Because the mosque is a holy place, the way must be honest with sincere intentions.

After all the list of analysis of the price of the work unit is filled and summed, then the price of the work unit is multiplied by each volume (size) of work so that the total cost of the building is obtained.

Example Table List of Budget Plans. This example is only for some types of work.
Number
Job Description
Size / Amount
Unit
Unit Price
Price Total
I.            Preparation, Excavation, and Landfill Work
1
Location cleaning

m2


2
Measurement and bouwplank pairing

m


3
Ground excavation for foundation

m3


4
Back landfill soil on the foundation side

m3


5
Landfill for floor elevation

m3


6
Landfill sand under the foundation

m3


7
Landfill sand under the floor

m3



Total

II.  Ceiling Work
1
Wooden ceiling framework

m2


2
4mm flywood size 60 cm x 120 cm

m2


3
Indoor ceiling trim

m


4
Outdoor ceiling trim

m


Total

III. Sanitation
1
Bath

piece


2
Squat toilet

piece


3
Bathroom water taps

piece


4
Ablution water taps

piece


5
Bathroom tiles

piece




IV. Painting
1
Wall paint

m2


2
Ceiling and trim wall paint

m2


3
Trim plank oil paint

m2


4
Sills oil paint

m2


5
Doors oil paint

m2


6
Shutters oil paint

m2


Total


Overall Cost Recapitulation Table
Number
Job Description
Price
I
Location cleaning, excavation, and landfill

II
Foundation and concrete

III
Pair walls and stucco

IV
Floors and walls

V
Roof

VI
Ceiling

VII
Sills, doors, and windows

VIII
Doors and windows fixtures

IX
Sanitation

X
Water Installation

XI
Electrical Installation

XII
Painting

XIII
Cleaning


Total


Rounded off


The way to calculate material requirements is to multiply the volume on each building component with a coefficient on the job analysis. Then a grouping based on similar material is made and the total material requirements for each type of material will be obtained. For example, the need for sand to install on the foundation plus the need for sand to install on masonry work, plastering work, and work on the installation of the floor, it will obtain a total need for install sand material. The same method is also used for cement material needs, concrete sand, and other materials.

Example of Calculation of Material Needs
Number
Job Description
Coefficient
Volume / Area
Material Requirements
1
1 m2 – Wall Installation 1 PC : 3 Sand

Red bricks
70 pieces
100
7000 pieces

Portland cement
0,29 sack
100
29 sacks

Sand
0,043 m3
100
4,3 m3
2
1 m2 – Wall Installation 1 PC : 5 Sand

Red bricks
70 pieces
220
15400 pieces

Portland cement
0,19 sack
220
41,8 sack

Sand
0,048 m3
220
10,56 m3
3
1 m3 – Wall Plastering 1 PC : 3 Sand and Filler

Portland cement
0,22 sack
200
44 sack

Sand
0,028 m3
200
5,6 m3
4
1 m3 – Wall Plastering 1 PC : 5 Sand and Filler

Portland cement
0,15 sack
400
60 sack

Sand
0,031 m3
400
12,4 m3

From the results of these calculations, the number of each material can be obtained as follows:
§  The amount of PC (cement) = 29 + 41.8 + 44 + 60 = 174.8 sacks, rounded to 175 sacks.
§  The amount of install sand = 4.3 + 10.56 + 5.6 + 12.4 = 32.86 m3.
§  The amount of red bricks = 7000 + 15400 = 22400 pieces.



This is the article from me. Hopefully the design of the Shahada Mosque (Masjid Syahadat), which is part of the Betterpad-Ray (Benteng Terpadu Raya / Great Integrated Fortress) model, can inspire and be realized. Aamiin. Sorry if there is an error especially in this article.


Reference:
·         Susanta, Gatut, et al. Membangun Masjid & Mushola. 2007. Depok: Penebar Swadaya. (https://archive.org/stream/BukuArsitektur/1048_Membangun%20Masjid%20dan%20Mushola#mode/2up)
 (Architecture Hobby)

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