COMPARATIVE ANALYSIS OF LIFE CYCLE COSTING OF ALTERNATIVE ROOF COVERING MATERIALS IN RESIDENTIAL BUILDING CONSTRUCTION

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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

1. To establish the initial cost of the alternative roof covering
2. To establish life cycle cost of various roof materials.
3. 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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