SOLD BY: COMPARATIVE ANALYSIS OF LIFE CYCLE COSTING OF ALTERNATIVE ROOF COVERING MATERIALS IN RESIDENTIAL BUILDING CONSTRUCTION
ABSTRACT
The aim of this research is to analyzed
and compare the life cycle cost of alternative root covering materials,
Zink coat roofing sheet materials, corrugated Asbestos cement roofing
materials, concrete decked roof materials, and long span aluminum
roofing materials were considered in this research work with the
objectives to determine the initial cost and lifecycle cost of each
roofing materials, to establish the relationship between the different
roof covering materials on the basis of their life cycle cost
implications. The need for this research is to help the client on making
decision on type of roofing material to be used in building
construction project on the basis of maintenance cost economy as a
whole. The composition of building construction cost are made up of
materials, labour, plant cost, and general overhead and profit. The
procedure for data collection was well structured questionnaire
administered to the personnel, of the various organisation (Construction
companies). Quantity Surveying Firms were visited to obtained the cost
data of those roof covering materials. The instrument for data analyzing
is the use of the present value formular of Ni for the techniques of
appraisal under initial rate and the cost in use of alternative roof
covering materials. The summary of finding revealed that sink coat steel
roof materials has the Initial cost of N69 75 which can be maintained
at N33. 613.92 and has overall cost of N52066.28. Corrugated asbestos
cement roof materials has the initial cost of N6975 which can be
maintained at N33.613.92 and has overall cost of N11983.89. Concrete
decked roof materials has the Initial cost of N3862.50. it can be
maintained at N20, 107 and has overall cost of N28,318.29. Long span
aluminum roof materials has initial cost of N1812.50 which can be
maintained at N9435.33 and replace at N1778 and has overall cost of
N13025.83. From the table of the cost in use of the various roofing
materials shown in the work it is observed that the corrugated asbestos
roofing sheet material has the cheapest initial cost This is followed by
long span aluminum, concrete decked and zink cost roof in ascending
order. The cost in use information also revealed that the long span
aluminum roofing material has the lowest total cost. Cost in use and
this is followed by corrugated, asbestos cement roofing sheet, concrete
decked and Zink coat steel in order to magnitude. From this research, it
is recommended among other that the initial cost of roof covering
materials should not be the only reason for it selection.
CHAPTER ONE
INTRODUCTION
1.1 Background of the Study
According to Barry (1996) Roofing
materials are materials which provide thermal insulation, reduces noise
provide surface for decoration diffuse light covers services pipe work
used for conduct electrical wiring and also provide surface insulation
from of electrical fittings, such as lamps fan alarm etc. Various
materials are used for the construction of roofing materials nation
worldwide, for the purpose of this research life cycle cost implication
of using alternative roofing materials. Materials are said to be
substances from which something else can be made, the implication of
using any material in construction of roofing material is very important
of cost is being considered. Apart from economical (cost) point of view
there are several other factors which complete to choose a particular
type of roofing material, these include aesthetic durability, low
maintenance cost, thermal insulation etc. Recently advancement in
technology which lead to growth of modern construction material has also
compelled people into try to blend with technological advancement in
roofing materials without conceding the cost implication of such
materials. It has also increase in the industrial advancement in roofing
materials and the need to give a client real value for his money which
promotes the quantity surveyors into comparing the cost implication of
using different types of roofing materials from the economic point of
view. Cost implication of different types of roofing materials from the
economic point of view simple mean the consequences of using an
alternative roofing materials for producing a roof. The types of roof to
be compared are in corrugated Abestos cement roofing sheet, concrete
decked roof, long span aluminum roofing sheet and zinc coating steel
root sheet.
They all offer to a building the same
function, they only differ in strength cost of construction, method of
fixing and maintenance cost The result of this research will aid in
making decisions on the type of roofing materials to choose for a
construction of a project.
1.2 Statement of the Problem
Research has it that there has being a
steady increase in the cost implication of using alternative roofing
materials. The research pose the following problems. What is the
relationship that exist between the various alternative materials for
roofing on the basis of their life cycle cost?
1.3 Aims of the Study
The aim of this research is carry out a
comparative study of a life cycle cost implication of using an
alternative roofing materials.
Objectives
- To establish the initial cost of the alternative roof covering
- To establish life cycle cost of various roof materials.
- To compare the initial and the lifecycle cost of the alternative roof covering material
1.4 The Need for the Research
The result of these research will help
the client in making a decision on the type of roofing materials to be
used in construction of any further project having consider their
economic factors durability maintenance cost and aesthetic.
1.5 Scope of Study
The scope of this project work is based
on the selected roofing materials which include corrugated Asbestos
cement roofing sheet, concrete decked roof, long span aluminum roofing
sheet coverings and zinc coating steel roofing sheet
1.6 Assumption
While carryout this research, it was
assumed that the total area covered does not affect the cost of the
roofing materials. All economic factors capable of influencing the cost
of roofing materials are kept at constant. Expected life of a building
is 60 years.
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