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The main bathroom located on the first floor of a dwelling house is shown - Leaving Cert Construction Studies - Question 8 - 2020
Question 8
The main bathroom located on the first floor of a dwelling house is shown. (a) Discuss in detail, using notes and freehand sketches, two considerations that should ... show full transcript
Worked Solution & Example Answer:The main bathroom located on the first floor of a dwelling house is shown - Leaving Cert Construction Studies - Question 8 - 2020
Step 1
Discuss in detail, using notes and freehand sketches, two considerations that should be taken into account when locating a bathroom on the first floor of a house.
Answer
When locating a bathroom on the first floor of a house, two critical considerations include:
1. Positioning of the Water Closet (W.C.)
The W.C. should be positioned on an external wall to allow for efficient drainage. This placement helps facilitate the setup of soil pipes without the need for extensive bends, which can cause blockages. Additionally, installing a window can provide natural light and ventilation, enhancing the bathroom's ambiance.
2. Accessibility and Circulation
The bathroom must ensure easy access. A minimum door width of 800mm is recommended for wheelchair access, and proper internal dimensions such as 2100 mm by 2400 mm should be maintained. This layout allows for easy movement and comfortable use of bathroom fittings.
Step 2
Using notes and a freehand sketch, show the above-ground pipework necessary for the safe removal of waste from the following fittings: shower, wash basin, water closet (W.C.), kitchen sink on ground floor.
Answer
The pipework required for safe waste removal from the fittings is as follows:
Shower
- Discharge pipe: Ø40 mm to 110 mm stack.
- Maximum length of branch pipe: 40mm pipe is 1.0 m.
- Slope of pipe: 18 to 90 mm recommended.
Wash Basin
- Discharge branch pipe: Ø32 mm to 110 mm stack.
- Maximum length of the 32 mm pipe is 1.7 m.
- Slope of pipe: 18 to 90 mm recommended.
Water Closet (W.C.)
- Discharge branch pipe: Ø110 mm to 110 mm stack.
- Standard length to connect to the ground: 600 mm recommended.
Kitchen Sink
- Discharge pipe: Ø40 mm to 110 mm stack.
- Maximum length of branch pipe: should ensure proper drainage without blockages.
Step 3
Outline two considerations to minimise blockages occurring in a drainage system.
Answer
To minimize blockages in a drainage system, the following considerations are essential:
1. Proper Installation of Pipes and Fittings
Ensure that all internal surfaces of pipes and fittings are smooth, minimizing the likelihood of material accumulation. Pipes must be installed with the correct diameter and a consistent gradient to facilitate effective drainage.
2. Sizing of Vent and Waste Pipes
Ensure that the diameters of the vent pipes are adequate to transport the necessary waste flow. Larger radius bends should be installed to prevent sharp turns that can cause backlogs and prevent back-siphoning.