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A triple glazed window with a wooden frame is fitted in the external wall of a dwelling house as shown - Leaving Cert Construction Studies - Question 1 - 2019
Question 1
A triple glazed window with a wooden frame is fitted in the external wall of a dwelling house as shown. The fixed frame of the window is 100 mm × 80 mm. The walls of... show full transcript
Worked Solution & Example Answer:A triple glazed window with a wooden frame is fitted in the external wall of a dwelling house as shown - Leaving Cert Construction Studies - Question 1 - 2019
Step 1
a) Draw a vertical section through the fixed frame of a window and the external wall of the house.
Answer
To begin, use a scale of 1:5 to illustrate a vertical section. Start by drawing the fixed frame of the window, ensuring it measures 100 mm x 80 mm. Next, depict the external wall of the house, represented by the external concrete block, which has a thickness of 100 mm. Include the internal timber frame, which is 250 mm x 50 mm, alongside the service cavity of 50 mm.
Continue the drawing upward to represent the window head at a height of 500 mm above the window sill, detailing how the inset wooden panel sheeting integrates with the vertical cladding (130 mm x 20 mm). Complete by ensuring all connections and materials follow proper construction detailing for aesthetic and structural integrity.
Step 2
b) Show the typical design detailing to prevent the ingress of rainwater at the window cill.
Answer
For this part, illustrate a design at the window cill that effectively prevents water ingress. Detail a robust cill that extends beyond the wall to create an overhang. Incorporate a DPC (Damp Proof Course) layer positioned below the cill to act as a barrier against moisture. Ensure that the cill slopes slightly downward to encourage water drainage away from the building. Illustrate gutters and downspouts as additional moisture management features to enhance the design's effectiveness.