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The main entrance door to a two storey dwelling house is a four-panel solid wooden door - Leaving Cert Construction Studies - Question 7 - 2012
Question 7
The main entrance door to a two storey dwelling house is a four-panel solid wooden door. The external wall in which the door is fitted is of timber frame constructio... show full transcript
Worked Solution & Example Answer:The main entrance door to a two storey dwelling house is a four-panel solid wooden door - Leaving Cert Construction Studies - Question 7 - 2012
Step 1
To a scale of 1:5, draw a vertical section through a portion of the external wall, doorframe, door and first floor joists.
Answer
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Define Dimensions: Start by marking a vertical line representing the total height. Using a scale of 1:5, denote key heights: 400 mm below the top of the door and 500 mm above the first floor joists.
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Draw the External Wall: Illustrate the timber frame construction. The outer layer is rendered concrete block, which should be clearly indicated on the drawing.
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Include Doorframe Details: Represent the four-panel door within the frame. Make sure to show door dimensions and how it fits into the wall structure.
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Depict Floor Joists: Show the first-floor joists supporting the wall, ensuring their connection with the doorframe is visible.
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Label Components: Include labels for each structural element, indicating typical dimensions such as the thickness of the frame and any other notable features.
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Check Scale Accuracy: Since the drawing is at a scale of 1:5, double-check that all elements are proportionate and accurately represented.
Step 2
Show clearly on your drawing the position of the vapour control layer to ensure an airtight structure.
Answer
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Identify Vapour Control Layer: In the drawing, mark the position of the vapour control layer, which is typically located on the warm side of the insulation in the wall assembly.
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Draw the Layer: Represent the vapour control layer with a distinctive line or shading to differentiate it from other components. This layer should also extend across the entire width of the wall and doorframe.
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Label the Layer: Clearly label the vapour control layer within your drawing, ensuring it is indicated as essential for maintaining an airtight structure.
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Show Continuity: It’s important to illustrate that the vapour control layer connects seamlessly at junctions—around the doorframe and at the bottom of the wall.