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The sketch shows sliding doors which open on to an external patio at the rear of a house - Leaving Cert Construction Studies - Question 9 - 2017
Question 9
The sketch shows sliding doors which open on to an external patio at the rear of a house. The patio is constructed using softwood decking on wooden joists. (a) Show... show full transcript
Worked Solution & Example Answer:The sketch shows sliding doors which open on to an external patio at the rear of a house - Leaving Cert Construction Studies - Question 9 - 2017
Step 1
Show, using notes and freehand sketches, how to fix the wooden decking to the joists to ensure that the decking does not warp or bow, especially during wet weather.
Answer
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Layout of Decking:
- Begin by laying the decking boards on the joists, starting from the house and working outwards.
- Ensure there is a gap of approximately 6mm between each board to allow for drainage and expansion in wet weather.
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Drilling and Fixing:
- Drill pilot holes for the fixing screws in each board to prevent splitting.
- Use stainless steel screws to avoid corrosion.
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Securing Decking:
- Fix the ends of the decking boards first, then proceed to fix the middle sections, ensuring screws are spaced appropriately for stability.
- It is important to secure the boards tightly to the joists while maintaining the specified gaps for optimal drainage.
Step 2
Recommend a suitable applied finish to preserve the external decking. Using notes and freehand sketches, describe the steps involved in preparing the wood and in applying the recommended applied finish.
Answer
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Recommended Finish:
- A suitable finish such as an oil-based deck stain or varnish is recommended for external decking. These products are widely available through regular manufacturers and come in various colours.
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Preparing the Wood:
- Clean the surface thoroughly using a suitable brush or cloth to remove any debris or dust.
- If necessary, use a damp cloth to further clean the surface before applying the finish.
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Application of Finish:
- Apply the varnish or stain using a brush or roller, ensuring even coverage over all surfaces.
- Allow the finish to dry before applying a second coat, if necessary, for added protection and longevity.
Step 3
Discuss two advantages of having an external patio, as shown.
Answer
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Extended Living Space:
- An external patio extends the usable living area of a home, allowing occupants to enjoy the outdoors while having a space for relaxation or entertainment.
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Enhanced Lifestyle:
- Having a patio can significantly improve the quality of life by providing a space for social gatherings or family activities, like barbecues or outdoor dining, thereby adding value to the home.