Format: Microsoft Word Chapters: 1-5
Pages: 70 Attributes: STANDARD RESEARCH
TABLE OF CONTENTS
Table of Contents
1.1 Aims of the study
1.2 Objective of the study
1.3 Scope and limitation of the study
2.0 Literature review
2.2 Conversion of Timber
2.3 Roofs and Roof covering
2.3.1 Classification of roofs
2.3.2 Pitched roof
2.3.3 Technical terms
2.3.4 Types of pitched
3.0 Research methodology
3.2 Sources of data collection
3.3 Method of data collection
3.3.2 Oral interview
3.4 Method of data analysis
3.4.1 Frequency distribution
3.4.2 Statistical interferences
4.0 Data presentation and analysis
4.2 Research Findings
5.0 Conclusion and recommendation
This project is
focused on the uses of timber for roof construction in the building industry.
It is obvious that the use of timber in building construction is very
versatile, but the work dwells mainly on the aforementioned. An extensive
review of related literature was undertaken, while questionnaires and oral
interviews as to the use of timber for roof construction were also utilised for
data collection. It discussed the causes of timber decay, timber preservation,
defects in timber and various types of hardwoods and softwoods, used for roof
construction with their local names. In conclusion, appropriate timber of
various sizes for roof trusses and analysis of the general conditions of timber
before its usage as roof trusses are also highlighted.
Roof is considered to be one of the most important items of work in a building and due attention should therefore be paid in the matter of selection of the type and the method of construction.
As it is important to make safe foundation for a building, it is equally important to provide good roof above it. Good foundation protects the building against damage from below the ground and in a similar way good roof prevents deterioration of the building starting from the top.
The choice of the type of roof of a building should be made after paying due consideration to the climatic conditions as well as the availability of selected materials at site. Roofing may be defined as a covering provided over the top of a building with a view to keep out air, snow, sun and wind, to protect the building from the adverse effects of these elements. A roof can also be defined as the upper most part of the building which supports on structural members and which main function and covered with roofing materials to enclose the space and prevent the same time from the adverse weather conditions.
A roof covering basically consists of roof covering materials supported on structural elements installed on the building top. The structural elements may be trusses, portals, flat, slab, shell, dome or space frame, whereas the roof components are:
1. Roof deck
2. Roof covering
A roof deck can be that or sloping is that portion of the roof construction to which the roof covering or roofing is applied and in which the only loads on the roofs are distributed, sheathering, roof planks or slabs, rafters, purlins, sub-purlins and joist.
The physical supported member includes trusses, tilders, frames and ribs of aches and domes. Roof covering or roofing generally used includes thatch covering, shingles, tiles, asbestos sheets, galvanised and corrugated iron sheets etc. materials for roof construction are as follows:
i. metal panel roof
ii. timber (wood)
iv. A.C. sheets
vi. G.I. sheets
vii. Metal sheets
viii. Shingles, shakes and tile roofs
Metal Sheets and Metal Roof: Metal of various alloys (such as lead, tern, zinc and copper) have been used for hundred of years and are still popular today. Primarily for aesthetic reasons or when historic restorations are being undertaken. Formed metal roofing should not be installed on sloped roof with a pitch less than 1½ inches in one foot.
Shingles, Shakes and Tile Roof are actually water shedding materials rather than water proofing materials, and rely upon roof pitch to rapidly drain the water from the surface on the roof. Slope s of 3 to 4 inches per foot are recommended before selecting any of these materials. Wood shingles and wood shakes require installation where air can circulate behind them so that they can dry out after becoming wet. Slate shingles are expensive to purchase and install but are extremely long lasting.
These materials are generally specified when restoration work is being undertaken. Porcelain enamel tiles or clay are frequently used in certain parts of the country where mission or Spanish-style roofs are popular such as the south-west.
In Nigeria, mostly, they make use of timber for roof construction because of the following reasons:
i. It is easier to get from the market and from the forest.
ii. It is cheaper in price than that of metal and tiles
iii. It can be easily constructed on site
iv. It is economical
1.1 AIMS OF THE STUDY
The aim of the study is to examine the uses of timber for roof construction in the building industry.
1.2 OBJECTIVE OF THE STUDY
i. To determine the uses of timber for roof construction in the building industry.
ii. To also determine the effect of timber for roof construction in the building industry.
iii. To determine the impact of timber for roof construction in the building industry.
1.3 SCOPE AND LIMITATION OF THE STUDY
The study will focus on the uses, effect and the impact of timbers for roof construction in the building industry. Financial problems may be one of its limitations to reach out to some places where to get some information.
Textbooks, journals, interview etc will be some approaches to use so as to obtain accurate information about the uses, effect and the impact of timber for roof construction in the building industry.
2.0 LITERATURE REVIEW
This chapter in literature review talks about the main materials used for roof construction. As have been said earlier in chapter one, we made mention of different materials used for roof construction in the building industry, but for this type of construction we are going to make use of timber for the roof construction.
|BANKING AND FINANCE||11|
|CONSTRUCTION AND BIULDING||1|
|ELECTRICAL AND ELECTRONICS||1|
|ENGLISH LITERARY STUDIES||29|
|GEOGRAPHY AND PLANNING||1|
|HOM SCIENCE AND MANAGEMENT||3|
|LIBRARY AND INFORMATION SCIENCE||4|
|OFFICE TECHNOLOGY AND MANAGEMENT||21|
|SCIENCE LABORATORY TECHNOLOGY||19|
|SOIL AND ENVIRONMENTAL SCIENCE||1|
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