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The sketch shows an internal load bearing wall built of solid concrete blocks - Leaving Cert Construction Studies - Question 1 - 2009
Question 1
The sketch shows an internal load bearing wall built of solid concrete blocks. The wall is 225 mm thick and is plastered on both sides. The ground floor is an insula... show full transcript
Worked Solution & Example Answer:The sketch shows an internal load bearing wall built of solid concrete blocks - Leaving Cert Construction Studies - Question 1 - 2009
Step 1
To a scale of 1:5, draw a vertical section through the foundation, the 225 mm wall and the ground floor.
Answer
Begin by sketching the vertical section at a scale of 1:5. Start from the ground up, including the following details:
- Foundation: Indicate the 150 mm smooth concrete floor directly beneath the wall.
- Concrete Wall: Outline the 225 mm concrete block wall, ensuring it’s plastered on both sides as per specifications.
- Ground Floor: Illustrate the insulated solid concrete floor, noting the thickness of the insulation.
- Floor Structure: Show the 25 mm thick hardwood floor covering, fixed to battens of 44 mm x 44 mm.
- Dimensions: Include four typical dimensions, such as the wall thickness, floor thickness, batten size, and foundation depth.
- Hardcore Layer: Add details of 200 mm of hardcore under the foundation.
- Reinforced Concrete: Specify the 350 mm reinforced concrete elements where applicable.
Ensure that each component is proportionately scaled and clearly labeled for ease of understanding.
Step 2
Indicate on your drawing the insulation to the floor slab and show clearly the position of the radon barrier.
Answer
On the same vertical section drawing:
- Insulation: Illustrate the insulation layer applied directly to the floor slab. This is typically a rigid foam insulation board positioned above the hardcore and beneath the concrete floor.
- Radon Barrier: Clearly show the position of the radon barrier, which should be placed above the insulation and below the flooring. Indicate its materials, typically a continuous sheet of polyethylene or similar vapor barrier, ensuring it covers the entire slab area to prevent radon ingress.
Provide annotations that specify the types and thicknesses of both the insulation and radon barrier as per current building regulations.