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An insulated suspended timber ground floor abuts the external wall of a dwelling house, as shown in the accompanying sketch - Leaving Cert Construction Studies - Question 1 - 2009
Question 1
An insulated suspended timber ground floor abuts the external wall of a dwelling house, as shown in the accompanying sketch. The external wall is a 350 mm concrete b... show full transcript
Worked Solution & Example Answer:An insulated suspended timber ground floor abuts the external wall of a dwelling house, as shown in the accompanying sketch - Leaving Cert Construction Studies - Question 1 - 2009
Step 1
To a scale of 1:5, draw a vertical section through the external wall and the suspended timber ground floor.
Answer
- Start by drawing the vertical section of the external wall. Begin with a 350 mm thick concrete block that sits at the base, incorporating all relevant layers.
- Above the block wall, represent the 150 mm cavity where the rigid insulation board fits snugly.
- Draw the suspended timber floor, ensuring to depict the 25 mm tongued and grooved hardwood finish at the top.
- Include essential details such as the depth of the foundation and the finished floor level, which should be indicated at 400 mm above the foundation.
- Label at least four typical dimensions clearly on your drawing for clarity.
Step 2
Indicate clearly the position of a barrier that would prevent radon gas entering the dwelling.
Answer
- Identify the location under the suspended timber floor for the radon gas barrier.
- This barrier should typically be located in the vicinity of the foundation level, where it can effectively prevent radon infiltration.
- Clearly depict this barrier in your drawing, ensuring it encompasses the area beneath the suspended timber floor and integrates with the external wall.