Construction Technology: Underground Car Park Cost Report

This report provides a cost estimation for constructing an underground car parking facility suitable for 30 cars at Oran Park. The report outlines the context of the Oran Park development and the advantages of underground parking. It details the construction process, equipment required (excavators, bulldozers, rippers, rock drills, trailers), materials (formwork timber, pre-cast concrete, mesh, waterproofing, blocks), and labor operations (landscaping, excavation, trench digging, ground compaction, etc.). The estimated total cost of the project is $444548.5, broken down into machines and equipment ($9200), materials ($340026.4), and labor and operations ($95322.1). The report concludes that underground parking maximizes space utilization and provides environmental benefits.

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CONSTRUCTION OF AN UNDERGROUND CAR PARKING
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Cost estimation of an underground car parking suitable for 30 cars at Oran Park
Introduction
Oran Park Development is the first phase of the development in the South West growth
corridor. On completion Oran Park will have the following; a 50,000 square metre town
centre and two neighbourhood centres, 36 kilometres of walking and cycling routes and 148
hectares of open space. This report is about the cost estimation of constructing an
underground car parking adjacent to the retirement village with a capacity of approximately
30 cars. The figure below is a master plan of Oran Park development.
Fig 1: Oran Park Masterplan
Underground car parking
Underground parking is a structured parking facility constructed below the ground level,
either as a building basement or covered with a structure above (Bhuyan, 2015, p. 368).
Having the car parking facilities underground assists in freeing up space above the ground

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level for activities that require air and light .it also hides cars from the ground or streetscapes,
thus allowing more space for active use such as retail, cafes, restaurants among other social
and economic activities to be carried out effectively.it assists in freeing up space above the
ground level for activities that require air and light (Chrest, 2012, p. 117). The figure below is
an illustration of underground parking.
Fig 2: An illustration of underground parking
Construction of an underground parking
The construction of underground parking requires an architectural firm or architect, a
knowledgeable contractor, a team of subcontractors and a cooperative client who can help to
get the project completed within the given time and the specified budget. The construction of
the underground parking in Oran Park development will require a great deal of machinery,
equipment and site preparation (Iqbal, 2016, p. 272).
The architect who will be involved in the construction will be tasked to carry out all the design
and consultancy works to ensure that the underground car parking is designed according to the
set standards. The contractor and subcontractors will carry out the actual construction of the
project.

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The construction of underground parking with dimensions of approx. 55 m by 15 m by 4 m deep
and with a capacity of roughly 30 cars. Will need the use of techniques and materials which falls
under the highest quality ratings as much as possible for the purpose of ensuring safety, stability
and longevity (Mulley, 2014, p. 361).
The equipment and machinery required
A wide range of equipment and machinery will be required for the construction of the
underground car parking. Some of the equipment that will be required include;
i) Excavators
The excavators will be required during the excavation of the ground to remove soils and rocks to
create space where the underground park will be located. The figure below is an example of an
excavator that can be used during excavation.
Fig 3: an excavator.
ii) Bulldozers
The bulldozer will be required during the construction of the underground car parking to remove
a large amount of earth, soils, and rocks from the site of construction to other parts that may
require landfilling. The bulldozers will also be needed to carry out various preliminary site
works, such as; stripping off the surface vegetation (Shoup, 2017, p. 228).

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iii) Rippers
The rippers will be required during construction to loosen the layers of soil rocks and the man-
made surfaces by using the tractive forces of a prime mover. They will be of great significance
in the construction of the foundations. The rippers will also be used in the preparation of
trenches, canals and stripping works. The figure below is an illustration of a ripper.
Fig4: Ripper used to strip and move soil and rocks
iv) Rock drills
The rock drills will be required during the construction to help in blasting rocks without
necessary requiring large compressors. There are many rocks on the construction site that might
require drilling to pave the way for the construction, and the rock drills will be of great help in
carrying out drilling of rocks.
v) Trailers
The trailers will be used to move earth materials from the excavation point to other parts where
they may be required for landfilling. The trailers will also be used for transporting the
construction materials to the site.

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Materials labour and operation requirements
Various types of materials will be required in the construction of the underground car parking
facility some of the materials that will be required include; Formwork timber, hungers that will
be required in joining methods, pre-cast concrete, hardcore to provide firm underground layer,
mesh to which will be used for reinforcing the slab, waterproofing which will be used to ensure
sound footing waterproofing, blocks which will be used to carry out the masonry works.
Various types of labour and operations will be required in the construction some of the them
include; landscaping operations, excavation operations, stockpile protection, trench digging, fill
placement, backfilling, ground compaction, waste allowable, vegetation clearing, formwork
preparation, finishing and completion (Zhao, 2012, p. 45).
The estimated cost of construction
After the estimation was carried out by using of various methods and techniques of estimating
the cost of construction projects. The total cost of constructing the underground car parking with
a capacity of 30 cars is estimated to be $ 444548.5.which can be broken down as follows;
 Machines and equipment $ 9200
 Materials $ 340026.4
 Labour and operations $ 95322.1
The graph below shows the estimated cost of constructing the underground car parking in Oran
Park development.

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machines material labour and
opartions
0
50000
100000
150000
200000
250000
300000
350000
Estimated construction cost
Trade
Cost $
Fig 5: A graph of the estimated cost of construction
Conclusion
In conclusion, Underground parking is a structured parking facility constructed below the
ground level, either as a building basement or covered with a structure above. Having the car
parking facilities underground assists in freeing up space above the ground level for activities
that require air and light. The total cost of constructing the underground car parking with a
capacity of 30 cars is estimated to be $ 444548.5.

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References
Bhuyan, S., 2015. Evaluation of the Trevipark Automated Parking System: Technical
Evaluation Report. 4th ed. Texas: Springer Science .
Chrest, A. P., 2012. Parking Structures: Planning, Design, Construction, Maintenance, and
Repair. 3rd ed. Sydney: Springer Science & Business Media.
Iqbal, M., 2016. Parking spaces, community places finding the balance through smart
growth solutions.. 3rd ed. Berlin: DIANE Publishing.
Mulley, C., 2014. Parking: Issues and Policies. 3rd ed. London: Emerald Group Publishing.
Shoup, D., 2017. The High Cost of Free Parking: 4th ed. Auckland: Taylor & Francis.
Zhao, J., 2012. Underground Infrastructures: Planning, Design, and Construction. 2nd ed.
Chicago: Butterworth-Heinemann,

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