The sketch shows a tiled roof of a dwelling house, which is supported on a 330 mm external concrete block wall with an insulated cavity - Leaving Cert Construction Studies - Question 1 - 2012

Draw the Vertical Section:

• Use a scale of 1:5 to create the vertical section through the eaves. Ensure proportions are accurate.
• Indicate the external wall and the tiled roof, including the pitch of 45°.

Construction Details:

• At 400 mm below the wall plate, show the ceiling construction with a clear indication of the wallplate and rafters (150 - 250 mm).
• Include three courses of tiles at the eaves, detailing the overlap and the arrangement of the concrete tiles.

Include Roof Insulation:

• Detail the roof insulation that complies with current Building Regulations, situated between rafters.

Ventilation Path:

• Clearly illustrate the ventilation path for air circulation under the roof structure at the eaves. This might include a ventilation gap or vents in the eaves.

Dimensions:

• Include three typical dimensions: the height of the wall, the width of the tiles, and the thickness of the insulation.