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The sketch shows portion of a wooden table - Leaving Cert Construction Studies - Question 9 - 2015
Question 9
The sketch shows portion of a wooden table. The table is designed for outdoor use. (a) Using notes and freehand sketches, show a suitable joint for attaching one of... show full transcript
Worked Solution & Example Answer:The sketch shows portion of a wooden table - Leaving Cert Construction Studies - Question 9 - 2015
Step 1
Suitable joint for attaching one of the rails to the leg of the table
Answer
A Mortise and Tenon joint is suitable for attaching the rail to the leg of the table. The mortise should be deep enough to accept the tenon, which is shaped to fit snugly.
The reason for choosing this joint is that it is strong and provides a large gluing surface area. This makes it suitable for outdoor use, especially when using waterproof glue for enhanced adhesion.
Step 2
Two design features that make the table suitable for outdoor use
Answer
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Water-resistant materials: The table should be made from wood that can withstand moisture, such as teak or cedar. This prevents warping and extends the lifespan of the table.
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Spaced joints in the construction: Spacing between boards allows water drainage and prevents pooling, reducing the risk of rot and keeping the structure intact.
Step 3
Recommend a suitable finish for the table
Answer
A recommended finish for the table is the application of teak oil to enhance the wood's natural beauty and provide protection from the elements.
Steps involved in preparing the wood and applying teak oil:
- Clean the surface: Remove any dirt, dust, or old finishes with a soft cloth and mild wood cleaner.
- Sand the table: Lightly sand the surface with fine-grit sandpaper to promote adhesion. Remove sanding dust with a damp cloth.
- Apply the teak oil: Use a clean cloth or brush to apply the oil generously. Allow it to penetrate for 15-20 minutes, then wipe off excess oil to avoid a sticky finish.
- Allow to dry: Let the table dry completely before using it.
- Reapply: For optimal maintenance, reapply teak oil every year or as necessary.