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A dwelling house has an open-plan kitchen and dining area on the ground floor, as shown - Leaving Cert Construction Studies - Question 1 - 2017
Question 1
A dwelling house has an open-plan kitchen and dining area on the ground floor, as shown. The kitchen has a solid concrete floor with a 20 mm tile finish. The adjoini... show full transcript
Worked Solution & Example Answer:A dwelling house has an open-plan kitchen and dining area on the ground floor, as shown - Leaving Cert Construction Studies - Question 1 - 2017
Step 1
Draw a vertical section through the external wall of the kitchen and both floors.
Answer
- Start by marking the base of the vertical section with the strip foundation.
- According to the marking scheme, draw the foundation slab as 1200 mm x 400 mm. Indicate the depth below ground, adjusting it to between 1000 mm and 1200 mm.
- Illustrate the concrete block wall as a 400 mm thick section topped with an external plaster finish, followed by insulation details.
- Next, draw the solid concrete floor for the kitchen showing the 20 mm tile finish.
- For the dining area, depict the suspended timber floor consisting of 20 mm tongue and groove hardwood, supported by 200 mm x 40 mm joists at 400 mm centres.
- Include the required insulation details for both floor types, ensuring clarity in construction junctions between the two.
- Mark a height of 400 mm above the finished floor and label all materials used correctly.
Step 2
Show the typical design detailing for cross ventilation.
Answer
- On your drawing, indicate the method for cross ventilation through the solid concrete floor into the suspended timber floor.
- Draw small openings (air bricks) positioned at appropriate intervals in the solid concrete floor to allow air flow.
- Specify the size of the ventilation openings to be 75 to 100 mm typical, ensuring that they connect with the cavity created beneath the timber floor.
- Use dotted lines to illustrate the path of airflow from the openings up through the space below the timber floor.