This study evaluates precast technology against conventional construction methods in terms of project profitability, highlighting that while precast construction is faster and reduces labor costs, it is more expensive overall. Data collected indicated that the construction duration for precast technology is significantly shorter, with a 63-day difference compared to conventional methods. Despite its advantages in speed and efficiency, conventional construction proves to be more cost-effective for individual houses.

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International Journal of Civil Engineering and Technology (IJCIET)
Volume 8, Issue 1, January 2017, pp. 281–286, Article ID: IJCIET_08_01_030
Available online at http://www.iaeme.com/IJCIET/issues.asp?JType=IJCIET&VType=8&IType=1
ISSN Print: 0976-6308 and ISSN Online: 0976-6316
© IAEME Publication
EVALUATION OF PRECAST TECHNOLOGY ON
PROJECT PROFITABILITY
M. Madhu
PG Student, Civil Engineering Department,
KL University, Vaddeswaram– 522 502, A.P
K. Hemanth Raja
Assistant Professor, Civil Engineering Department,
KL University, Vaddeswaram– 522 502, A.P
ABSTRACT
Objectives: The objective of this paper is to compare the precast technology with conventional
construction and evaluate the precast technology on project profitability.
Methods: The methodology is to collect the data from precast and conventional construction
companies. And analyze the collected data to compare the cost details and duration of the project
of precast technology with conventional construction and evaluate the precast technology on
project profitability.
Findings: The cost of the project is more in precast technology than the conventional
construction, the duration of the project is less in precast technology than conventional
construction. The precast technology is faster than the conventional construction so it is very useful
in our country to grow the construction projects.
Key words: Precast Technology, Conventional Construction, Profitability.
Cite this Article: M. Madhu and K. Hemanth Raja, Evaluation of Precast Technology On Project
Profitability. International Journal of Civil Engineering and Technology, 8(1), 2017, pp. 281–286.
http://www.iaeme.com/IJCIET/issues.asp?JType=IJCIET&VType=8&IType=1
1. INTRODUCTION
The molds used to manufacture precast components by filling of concrete and then curing can be
conducted, and shifted to the site where the components are assembled into place. Now a day the
construction boom in India is very fast1
. It gives more opportunities in our country for an upcoming people
in the precast industry. In these days the precast construction is one of the advanced techniques in the
whole world, and its wide applicability, the total precast construction system is becoming a popular choice
in construction industry2
. Precast construction components available in many sizes, shapes, including
electrical lines and plumbing lines3
.
2. NECESSITY OF PRE-CAST CONSTRUCTION
The precast components usage is the new technique in the construction industry for constructing the
buildings in short time and also getting the good strengths. The main advantage of using pre-cast
components is its faster erection with more versatility and good flexibility4
. The good Quality achieved by

2. M. Madhu and K. Hemanth Raja
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these components. The longer spans easily constructed with precast components in a single stretch. In all
aspects, the precast construction is in lead to the ease of construction. The building/structure which is
constructed by the precast components is having good finishing. In precast construction, we don’t use large
form works than conventional type construction. These components are durable and structurally efficient5
.
The maintenance cost and also the labor cost of the project will be reduced by precast construction. The
main advantage of these components is environmental friendly6-7
.
3. METHODOLOGY
3.1. General
This presents the comparison of conventional and precast construction of a double-storey residential
building.
3.2. Plan Preparation
The double storey building plan prepared for estimating of quantities of precast and conventional
construction and it showed in Figure 1.
3.3. Estimation of Quantities
The require materials in both conventional and precast construction by the estimation. The details were
collected from the related companies.
3.4. Project Duration
The construction duration details were collected from the similar companies. And the duration of the
project finds out by Primavera P6 with CPM (critical path method). And shown in Table.1
3.5. Cost Analysis
In cost analysis, we consider labor, material, machinery to compare the precast with conventional
construction of double-storey residential building.
4. RESULTS & DISCUSSIONS
The Floor plans are shown in Figure 1-2., The precast construction and also the conventional construction
duration find out by the collected data from related companies. And it is shown in three different stages.
The substructure completion time was same in both precast and conventional construction because the
same methodology for both constructions. But in the super-structures, the precast construction should
complete in short time than conventional construction, shown in Figure 3. and Table 1.

3. Evaluation of Precast Technology On Project Profitability
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Figure 1 Ground floor plan
Figure 2 First floor plan

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Figure 3 comparison of cost
S.NO Description
1 Substructure
2 Superstructure
3 Finishing works
The variation is more in duration between precast
construction. Because the elements
factory and they had smooth surfaces and install
precast construction is 65 Days. The total duration
variation is 63 days of both methods
short time than the conventional method. The time duration represents in three different stages they are
blue indicates substructure, red indicates
4. The precast construction and also the conventional construction duration find out by the collected data
from related companies. And it is shown in three different stages. The substructure completion time was
same in both precast and conventional construction because
But in the super-structures, the precast construction should
construction, shown in Figure 5. The variation is more in duration between precast
the main advantage of precast constructi
were manufacturing in the factory
lines. The total cost for precast construction is 73,00
is 60,19,000/-. The cost variation is 12,91,000/
precast construction spent more mon
cost detail represents in three different stages they are blue indicates
superstructure, and green indicates finishing works.
M. Madhu and K. Hemanth Raja
IJCIET/index.asp 284
comparison of cost in 3 different stages for precast & conventional
Table 1 Duration of construction
Description Precast construction Conventional construction
Substructure 22 22
Superstructure 12 52
Finishing works 31 54
The variation is more in duration between precast and conventional. It is the main advantage
on. Because the elements of staircase, wall panels, and slab panels were manufacturing in the
and they had smooth surfaces and installed with electric and plumbing lines
precast construction is 65 Days. The total duration of conventional construction is 128 days.
variation is 63 days of both methods. This graph represents the precast construction
time than the conventional method. The time duration represents in three different stages they are
, red indicates superstructure, and green indicates finishing works
tion and also the conventional construction duration find out by the collected data
. And it is shown in three different stages. The substructure completion time was
same in both precast and conventional construction because the same methodology for both constructions.
the precast construction should complete in short time
The variation is more in duration between precast
precast construction. Because the elements of staircase, wall panels, and slab panels
factory and they had smooth surfaces and installed with electric and plumbing
. The total cost for precast construction is 73,00,000/-.The total duration of
The cost variation is 12,91,000/- both construction methods. This graph represents in the
precast construction spent more money than the conventional method, shown in Table 2. and Figur
cost detail represents in three different stages they are blue indicates
, and green indicates finishing works.
editor@iaeme.com
in 3 different stages for precast & conventional
Conventional construction
22
52
54
t is the main advantage of precast
, wall panels, and slab panels were manufacturing in the
ed with electric and plumbing lines. The total duration of
conventional construction is 128 days. The duration
. This graph represents the precast construction completed within a
time than the conventional method. The time duration represents in three different stages they are
, and green indicates finishing works, shown Figure
tion and also the conventional construction duration find out by the collected data
. And it is shown in three different stages. The substructure completion time was
methodology for both constructions.
in short time than conventional
The variation is more in duration between precast and conventional. It is
, wall panels, and slab panels
and they had smooth surfaces and installed with electric and plumbing
of conventional construction
both construction methods. This graph represents in the
ey than the conventional method, shown in Table 2. and Figure 6. The
cost detail represents in three different stages they are blue indicates substructure, red indicates

5. Evaluation
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Figure 4 comparison of total duration for precast & conventional
Figure 5 comparison of cost for precast & conventional in 3 different stages
Figure 6 comparison of total project cost for precast & conventional
S.NO Description
1 Super structure
2 Sub structure
3 Finishing works
Evaluation of Precast Technology On Project Profitability
IJCIET/index.asp 285
comparison of total duration for precast & conventional
comparison of cost for precast & conventional in 3 different stages
comparison of total project cost for precast & conventional
Table 2 Total cost of construction
Description Precast construction Conventional construction
Super structure 526000/-
2423000/- 1024000/
Finishing works 4351000/- 4469000/
f Precast Technology On Project Profitability
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comparison of total duration for precast & conventional
comparison of cost for precast & conventional in 3 different stages
comparison of total project cost for precast & conventional
Conventional construction
526000/-
1024000/-
4469000/-

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5. CONCLUSION
This paper represents to find out double-storey residential building project duration and project cost in both
construction methods, and compare the both precast construction and conventional construction method.
The building was completed within a short time by precast construction, easy to work and helpful in labor
shortage than the conventional construction. And the time of duration is reduced to 63 days by precast
construction. It is the main advantage of precast construction. But in the cost analysis, the conventional
construction was better than the precast construction in individual houses.
REFERENCES
[1] Nahmens I, Michael A. Mullen’s Lean Homebuilding: Lessons Learned from a Precast Concrete
Panelizer. Journal of architectural engineering. 2011 January; 17(4), 155-161.
[2] Neville B, Khalfan M A, Maqsood T. Off-Site Construction of Apartment Buildings. Journal of
Architectural engineering. 2013 March; 19(1), 51-57.
[3] Alistair G F G, Andrew R J D. Strategies for Integrating the Use of Off-Site Production Technologies in
House Building. Journal of Construction Engineering and Management. 2012 November; 138(11),
1331-1340.
[4] Warszawski A, Moshe A, Carmel D. Utilization of precast concrete elements in building. Journal of
American Society of Civil Engineers. 1984 December; 110(4), 476-485.
[5] Christian T, Lars H. Rethinking the business model in construction by the use of off-site "system
deliverance" the shaft project. Journal of Architectural Engineering. 2013 December; 19(4), 279-287.
[6] Jeong Y S, Eastman C M, Sacks R, Kaner I. Benchmark tests for BIM data exchanges of precast
concrete. Journal of Automation in Construction. 2009 July, 18(4), 469-484.
[7] Vacharapoom B, Nashwan D. Intelligence approach to production planning system for bespoke precast
concrete products. Automation in Construction. 2006 November; 15(6), 737-745.