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The external wall of a dwelling house is a 400 mm concrete block wall with a full-fill insulated cavity - Leaving Cert Construction Studies - Question 1 - 2019
Question 1
The external wall of a dwelling house is a 400 mm concrete block wall with a full-fill insulated cavity. The wall is plastered on both sides. A triple glazed timber ... show full transcript
Worked Solution & Example Answer:The external wall of a dwelling house is a 400 mm concrete block wall with a full-fill insulated cavity - Leaving Cert Construction Studies - Question 1 - 2019
Step 1
To a scale of 1:5, draw a vertical section through the top portion of the window.
Answer
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Start by drawing the outline of the wall, which is a 400 mm concrete block wall with a full-fill insulated cavity.
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At the top of the section, depict the external render of 19 mm.
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Draw the concrete block outer leaf, measuring 100 mm, ensuring it fits within the overall wall dimensions.
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Represent the insulated cavity between two concrete block leaves and indicate it clearly in your drawing.
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Incorporate the fixed frame of the window that measures 150 mm x 80 mm, ensuring to detail the structure around it, including the lintels directly above it.
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Show the concrete lintels above the window, which should be 100 mm high. Detail their connection to the wall.
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Add the internal plaster layer of 15 mm to the internal side of the wall, as well as the pressed concrete lintels (dimensions: 100 mm x 70 mm).
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Ensure all elements are drawn to scale with four typical dimensions clearly indicated for clarity.
Step 2
Show clearly on your drawing the typical design detailing to ensure that the cavity is closed at the window head.
Answer
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Indicate the location of the proprietary fire stop cavity closer directly above the window head in your drawing.
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Detail how the fire stop cavity closer fits within the cavity, ensuring a snug fit without gaps.
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Illustrate the fixing of plasterboard to the inside reveal, ensuring it fits tightly to prevent any air gaps that might lead to heat loss.
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Clearly label each component and measure the closers and plasterboard as appropriate, ensuring adherence to current building regulations.