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A cut-string timber stairs suitable for a domestic dwelling is shown in the accompanying sketch - Leaving Cert Construction Studies - Question 7 - 2008
Question 7
A cut-string timber stairs suitable for a domestic dwelling is shown in the accompanying sketch. (a) To a scale of 1:5, draw a vertical section through the bottom f... show full transcript
Worked Solution & Example Answer:A cut-string timber stairs suitable for a domestic dwelling is shown in the accompanying sketch - Leaving Cert Construction Studies - Question 7 - 2008
Step 1
To a scale of 1:5, draw a vertical section through the bottom four steps of the stairs.
Answer
To create a scaled drawing:
- Outline the Steps: Draw the first four steps of the stair. Each step should represent a rise (height) and go (tread) that correlates to the scale 1:5.
- Include the Newel Post: Position the newel post at the bottom of the staircase, typically a square or cylindrical post that provides structural support for the balustrade.
- Draw the Balustrade: Add the balustrade along the length of the steps, ensuring it's at a standard height (between 840mm and 900mm as per safety regulations).
- Dimensions: Clearly label the dimensions of the rise and go for each step, along with the overall height and width of the staircase. Make sure to include a legend for clarity.
Step 2
Using notes and freehand sketches show two design features that ensure that the stairs is safe for all users.
Answer
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Riser and Tread Dimensions:
- Ensure that the relationship between risers and goings is compliant with safety standards; specifically, should be between 550mm and 700mm. Optimum going is 220mm, and maximum rise should not exceed 220mm.
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Handrail Design:
- Install a handrail on both sides of the stairs, especially on stairs wider than 1000mm. The handrail should be positioned between 840mm and 900mm from the pitch line, providing safety and support for all users.