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A cut-string wooden stairs leads to the first floor of a house, as shown - Leaving Cert Construction Studies - Question 7 - 2022
Question 7
A cut-string wooden stairs leads to the first floor of a house, as shown. The first floor landing has a hardwood tongue and grooved floor, on 225 mm x 50 mm joists w... show full transcript
Worked Solution & Example Answer:A cut-string wooden stairs leads to the first floor of a house, as shown - Leaving Cert Construction Studies - Question 7 - 2022
Step 1
To a scale of 1:5, draw a vertical section through the centre of the stairs and first floor landing.
Answer
To create the vertical section, start by marking the dimensions of the stairs at a 1:5 scale. The following elements should be included:
- Top three steps: Draw three steps, each measuring 250 mm in width and 175 mm in rise (1:5 scale will convert these to 50 mm width and 35 mm rise).
- Newel Post: The newel post should be represented as a square section measuring 110 mm x 110 mm (which translates to 22 mm x 22 mm at a 1:5 scale).
- Balusters: Include balusters at 40 mm in width and 900 mm in height (8 mm x 180 mm on your drawing).
- Handrail: The handrail should be drawn at a height of 900 mm and a width of approximately 40 mm.
- First Floor Landing: Show the first floor landing with a tongue and groove floor, supported by joists of 225 mm x 50 mm.
- Key dimensions: Ensure to note structural members like the string (250 mm x 50 mm), thread (250 mm x 25 mm), and riser (175 mm x 20 mm). Incorporate these elements to represent a clear view of how the components interact.
Step 2
On your drawing, show two design details that ensure the safety of users on the first floor landing.
Answer
- Sphere Penetration Detail: Indicate that any sphere with a diameter of 100 mm should not be able to pass through the space between the balusters. This ensures that small children or objects cannot fall through, enhancing safety on the landing area.
- Handrail Height Detail: Mark the handrail at a minimum height of 900 mm from the landing surface. This height is essential for preventing falls and ensuring that users of all ages have proper support when using the stairs.