COMPARATIVE ASSESSMENT OF THE STRENGTHS OF SOLID AND GLUED LAMINATED TIMBER

Format: MS WORD | Chapter: 1-5 | Pages: 70 | 2575 Users found this project useful | Price NGN5,000

COMPARATIVE ASSESSMENT OF THE STRENGTHS OF SOLID AND GLUED LAMINATED TIMBER

Abstract

Timber isa construction material with unparalleledenvironmental credential. Howbeit, limitations of span and crossectional dimension, strength reducing defects and anisotropy limits its engineering application. Mechanical methods of jointing to address the earlier challenge has introduced serious wood fiber failure and increased the embodied energy in timber as a green material. However, developed societies have established in literature the possibility of overcoming these limitations to utilize timber beyond the traditional application in Nigeria being glueable for developing engineered wood products like glued laminated timber (glulam) using their timber species. Conversely, while little or no interest is shown in timber as a structural material in Nigeria, many of the few researches in timber have focused on solid timber elements leaving its limitations unattended. Consequently, its structural capabilities is yet unappreciated.

Nevertheless, the fact remains that reconstituting natural timber as glulam is an effective way of optimizing this green material for limitless structural use. Whether these qualities are achievable with local timber is the main thrust of this research. The research therefore conducted laboratory experiments on selected timber species namely; Ire (Funtumia africana), Awun (Alstonia congensis) and Oriro (Antiaristoxicaria) being readily available and widely used species with no information on Oriro and Ire in NCP 2 of 1973. The aim was to assess their strength properties as glulam elements with the view to improving their structural capacity.It also set out to determine their glueability, the effects of temperature variation on compressive strength parallel to grain for glulam short columns by subjecting specimens ofequal dimension for the three species to different temperatures of 0 0C, 40 0C, 50 0C, 70 0C, 100 0C and room temperature for 4 hours in an electric oven prior to testing; to compare the mechanical properties of solid and glulam elements. In furtherance, specimens were prepared and tested for; static bending strength, compression parallel and perpendicular to grain, density and moisture content in line with ASTM D193, EN 408(2003) and EN13183-1(2002).

The research established that the species are; structurally glueable, that due to temperature increase compressive strength is lost in glulam columns from control temperature (30 0C and 27.90C) to 100 was 41% 14.4% and 21.6% in Ire, Awun and Oriro. Results showed that glulam elements developed 55%, 95% and 143% of clear solid wood bending strength and that bending strength of 65.22N/mm2; 36.44N/mm2, 26.15N/mm2; 25N/mm2 and 14N/mm2; 20N/mm2 in solid and glulam in the species are structurally significant.The study has therefore demonstrated that the timber species studied can be engineered to load bearing glued laminated structural elements using polyvinyl acetate glue without severe loss of strength below and above room temperature.

CHAPTER ONE

INTRODUCTION

1.1 Background to the Study

The versatility of timber finds wide application in the construction industry spanning from simple framing in housing projects to large scale public facilities. However because sawnwood hasrestrictionsto spans and cross-sectional dimensions due to size of tree as well as strength reducing features which occur at growth, its value as a structural material for extensive structural applications is limited. Engineered wood products such as glue laminated timber (glulam) were thereforedeveloped to improve the use of natural timber beyond its natural limitations.

Structural glued laminated timber is an engineered structuraltimber glued up from suitably selected and prepared pieces ofstress graded lumber either in a straight or curved form with the grain of all pieces essentially parallel to the longitudinal axis of the member (APA, 1996; Manja et al., 2010). According to the American plywood association (APA, 2013), glulam has remained the most resource-efficient approach to wood building products when it comes to optimizing products from a carefully managed timber resource. Glued laminated wood can be built out of defective wood without losing its strength properties as reported by Reginaet al.,(2010). The application of glue laminated timber as a construction material would therefore make many species of timber previously regarded as non-merchantable useful for structural purpose. Clearly, this has the potential to revamp the forestry industry making it a massive employer of labor. Glulam can also be manufactured from small diameter fast growing tree, thereby bridging the supply deficit from slow growing trees(Evalinaet al.,2010). According to the American institute of timber construction.

Tags: THE STRENGTHS OF SOLID AND GLUED LAMINATED TIMBER COMPARATIVE ASSESSMENT OF THE STRENGTHS OF SOLID COMPARATIVE ASSESSMENT OF GLUED LAMINATED TIMBER

DOWNLOAD THE FULL PROJECT

Project information

Project Price

NGN5,000
Number of Pages

70
Number of Chapters

1-5
Additional Content

Abstract,Table of content and Questionnaire

COMPARATIVE ASSESSMENT OF THE STRENGTHS OF SOLID AND GLUED LAMINATED TIMBER

Not The Topic You Are Looking For?

For Quick Help Chat with Us Now!

+234 813 292 6373

+233 55 397 8005

Search for your project topic

HOW TO GET THE COMPLETE PROJECT ON COMPARATIVE ASSESSMENT OF THE STRENGTHS OF SOLID AND GLUED LAMINATED TIMBER INSTANTLY

Click on the Download Button above.
Select any option to get the complete project immediately.
Chat with Our Instant Help Desk on +234 813 292 6373 for further assistance.
All projects on our website are well researched by professionals with high level of professionalism.

Here's what our amazing customers are saying

Musa From Ahmadu Bello University

Thank you iprojectmaster for saving my life, please keep it up and may God continue to bless you people.

Excellent

Adam Alhassan Yakubu

UDS

Excellent work and delivery , I promise to share my testimonies everyone in need of this kind of work. You're the best

Excellent

Stancy M

Abia State University, Uturu

I did not see my project topic on your website so I decided to call your customer care number, the attention I got was epic! I got help from the beginning to the end of my project in just 3 days, they even taught me how to defend my project and I got a 'B' at the end. Thank you so much iprojectmaster, infact, I owe my graduating well today to you guys...

Excellent

Peace From Unilag

I cried not knowing how to go about my project but the day i searched online and saw iprojectmaster, i called and got my full project in less than 15minutes, i was shocked!

Excellent

Joseph M. Yohanna

Thanks a lot, am really grateful and will surely tell my friends about your website.

Excellent

Temitayo Ayodele

Obafemi Awolowo University

My friend told me about iprojectmaster website, I doubted her until I saw her download her full project instantly, I tried mine too and got it instantly, right now, am telling everyone in my school about iprojectmaster.com, no one has to suffer any more writing their project. Thank you for making life easy for me and my fellow students... Keep up the good work

Very Good

JONNAH EHIS

Ajayi Crowther University, Oyo

I was scared at first when I saw your website but I decided to risk my last 3k and surprisingly I got my complete project in my email box instantly. This is so nice!!!

Excellent

Abubakar Iliyasu Hashim

Federal college of education pankshin affiliated to university of jos

I am highly impressed with your unquantifiable efforts for the leaners, more grace to your elbow.I will inform my colleagues about your website.

Very Good

MATTHEW NGBEDE

Ahmadu Bello University

I wish I knew you guys when I wrote my first degree project, it took so much time and effort then. Now, with just a click of a button, I got my complete project in less than 15 minutes. You guys are too amazing!

Excellent

Samuel From Ajayi Crowther University

You guys just made life easier for students. Thanks alot iprojectmaster.com

Excellent

View All Reviews

FREQUENTLY ASKED QUESTIONS

How do I get this complete project on COMPARATIVE ASSESSMENT OF THE STRENGTHS OF SOLID AND GLUED LAMINATED TIMBER? Simply click on the Download button above and follow the procedure stated.
I have a fresh topic that is not on your website. How do I go about it?
How fast can I get this complete project on COMPARATIVE ASSESSMENT OF THE STRENGTHS OF SOLID AND GLUED LAMINATED TIMBER? Within 15 minutes if you want this exact project topic without adjustment
Is it a complete research project or just materials? It is a Complete Research Project i.e Chapters 1-5, Abstract, Table of Contents, Full References, Questionnaires / Secondary Data
What if I want to change the case study for COMPARATIVE ASSESSMENT OF THE STRENGTHS OF SOLID AND GLUED LAMINATED TIMBER, What do i do? Chat with Our Instant Help Desk Now: +234 813 292 6373 and you will be responded to immediately
How will I get my complete project? Your Complete Project Material will be sent to your Email Address in Ms Word document format
Can I get my Complete Project through WhatsApp? Yes! We can send your Complete Research Project to your WhatsApp Number
What if my Project Supervisor made some changes to a topic i picked from your website? Call Our Instant Help Desk Now: +234 813 292 6373 and you will be responded to immediately
Do you assist students with Assignment and Project Proposal? Yes! Call Our Instant Help Desk Now: +234 813 292 6373 and you will be responded to immediately
What if i do not have any project topic idea at all? Smiles! We've Got You Covered. Chat with us on WhatsApp Now to Get Instant Help: +234 813 292 6373
How can i trust this site? We are well aware of fraudulent activities that have been happening on the internet. It is regrettable, but hopefully declining. However, we wish to reinstate to our esteemed clients that we are genuine and duly registered with the Corporate Affairs Commission as "PRIMEDGE TECHNOLOGY". This site runs on Secure Sockets Layer (SSL), therefore all transactions on this site are HIGHLY secure and safe!