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)
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