Portal Frame Assignment

School of Built Environment and Engineering

ENB270 Engineering Mechanics of Materials

Portal Frame Project

Lecturer: Fraser McGregor

Tutor: Wahyu Hasan

Due Date: 20/05/2011

Authenticity Statement

We (the undersigned) declare that all the material contained in this assignment has been compiled by us with all attributions of materials not derived by the group members appropriately attributed.

Copyright Statement

The copyright for this assignment remains with the authors, but we allow our Heads of School or their nominees to make copies without notice. Signed by Assignment Author:

ENB270 Engineering Mechanics of Materials Portal Frame Project

Page i

Executive Summary

Team002 endeavour to design and construct projects through professional engineering practise, by researching the problem presented and issues that may need to be resolved. We have also determined a desirable outcome for you and have outlined the processes which lead to the desired outcome. This report will demonstrate, in depth, this professional engineering design processes. This report contains the following information; • • • • • • • • • Background research Conceptual design Engineering design process Materials test results Calculation analysis Final design Construction process Load and failure predictions Testing results

Research was conducted on major aspects such as types of portal frames, advantages and disadvantages, design factors, materials and adhesives. From research it was gathered that an ‘I beam’ cross section would fulfil the needs for the project. Web stiffeners would be introduced during construction due to the prone nature of torsion in the design.

In order to select a suitable design, in accordance AS4063.1, balsa wood samples were tested under progressive loads for elasticity and failure strength. Design calculations regarding second moment of area, shear forces, bending moments, torsion, bending strength, deflection, Mohr’s circle and space...