Constructing Environments ENVS 10003 Journal Submission Week 6 1
Construction & Testing Process – Group 2 {2 pieces of clear Radiata pine & 2 pieces of plywood} 3
Design Our Design incorporated multiple members arranged in a formation, with alternating angles. Whilst planning we considered the orientation of member of timber and the resultant strength. We understood that our design would compromise the strength however, the results of the test spoke volumes about loads and which orientations of timber were the strongest.
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Josh Davis 641144
Design & Orientation Spacing and Gaps caused poor distribution of loads resulting in a weak design. Portions of the structure were reinforced and they proved to be quite strong due to the alternating orientation of timber and plywood. Tension and compression were distributed in a way that the materials were actually holding together, thus leaving the structure with strong and weak sections.
Testing & Conclusions Testing proved that our design was weak and therefore we observed a failing when placed under around 175kgs of force. Where reinforcements had been m ade the structure held together, however the due to the weak sections in the design it performed poorly. A far more simple design approach may have seen our structure perform better, with m embers of timber b eing orientated in a consistent m anner.
Compression
Tension
Orientation Radiata pine orientated on its side (width) best held the loads This is because the span of the timber enables the force to be more evenly distributed therefore, even with the bottom side under tension and the top side under compression the timber can maintain its structure up to a point. When a fixture is used to join more than one piece together, the strength properties of the timber are undermined.
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Constructing Environments ENVS 10003 Journal Submission Week 6
Minimal fixtures proved very strong in Group 1 (left image) that were provided with 3 pieces of pine and 2 pieces of plywood. The orientation and shape of the timber was crucial in the undertaking of a load The beam was able to hold in excess of 820kgs before it failed due to the tension that was place on the underside The size of inflection was large as timber can bend a great deal. Group 3 (below image) had issues with the plywood failing before the structural pine. This could have been fixed through the trimming of the edge before testing
Analysis of Our Design
Josh Davis 641144
Constructing Environments ENVS 10003 Journal Submission Week 6
Josh Davis 641144
WALL SYSTEMS
References: Ching, F., 2008. Building Construction Illustrated. 4th Edition. Wiley & Sons, Inc.,
Constructing Environments ENVS 10003 Journal Submission Week 6
Josh Davis 641144
2 Bored Piers
Prefabricated walls Beams
Concrete Slab
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1 Beams
Column Strip Footing
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Roof
Prefabricated Walls