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5.1 Draw a neat freehand drawing in your ANSWER BOOK to show the installation of a gutter, down-pipe installation with an offset pipe and rain-water shoe as seen from the side - NSC Civil Technology Civil Services - Question 5 - 2021 - Paper 1
Question 5
5.1 Draw a neat freehand drawing in your ANSWER BOOK to show the installation of a gutter, down-pipe installation with an offset pipe and rain-water shoe as seen fro... show full transcript
Worked Solution & Example Answer:5.1 Draw a neat freehand drawing in your ANSWER BOOK to show the installation of a gutter, down-pipe installation with an offset pipe and rain-water shoe as seen from the side - NSC Civil Technology Civil Services - Question 5 - 2021 - Paper 1
Step 1
5.1 Draw a neat freehand drawing in your ANSWER BOOK to show the installation of a gutter, down-pipe installation with an offset pipe and rain-water shoe as seen from the side.
Answer
To accurately illustrate the installation of a gutter with a down-pipe, follow these steps:
- Start with the Gutters: Draw a horizontal line to represent the top edge of the gutter. The gutter should have a slight slope towards the down-pipe to ensure water drainage.
- Draw the Down-Pipe: Attach a vertical line downwards from the gutter to represent the down-pipe. This should be aligned with the gutter's low point.
- Include the Offset Pipe: If an offset is required, draw a pipe that bends or curves away from the vertical line before connecting to the rain-water shoe.
- Draw the Rain-Water Shoe: At the bottom of the down-pipe, depict the rain-water shoe, which diverts water into a drain or away from a building.
- Label Clearly: Ensure that each component is clearly labeled (gutter, down-pipe, offset pipe, and rain-water shoe) for clarity.
This drawing must be neat and to scale for accuracy.
Step 2
5.2 FIGURE 5.2 below shows drawings of a concrete shoe and a surface channel. Explain the purpose of each.
Answer
The purpose of each component is as follows:
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Concrete Shoe: The concrete shoe channels water away from the house or building's foundation. This prevents water accumulation near structures, which can lead to damage over time.
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Surface Channel: The surface channel is designed to channel water towards rivers or dams. This helps manage stormwater runoff by directing it into designated drainage systems, reducing the risk of flooding and erosion in urban environments.
Step 3
5.3 Flashing is used for waterproofing roofs. Name TWO materials that are used for flashing.
Answer
Two common materials that can be used for flashing include:
- Copper: Known for its durability and resistance to corrosion, copper is often used in high-quality roofing projects.
- Galvanised Sheet Metal: This is a popular choice for flashing due to its corrosion-resistant properties and cost-effectiveness.
Step 4
5.4 ANSWER SHEET 5.4 shows the front view and top view of a cylindrical pipe elbow. Use the drawing and the information on ANSWER SHEET 5.4 and draw ONE development of the vertical cylindrical pipe elbow. Start the development at A, showing the 3 mm seam on both sides.
Answer
To develop the vertical cylindrical pipe elbow:
- Analyze the Views: Look at the front and top views on ANSWER SHEET 5.4 to determine the dimensions of the elbow.
- Draw the Development: Start from point A. Use the given diameters and the 3 mm seam to outline the flat layout of the elbow.
- Include Construction Lines: Ensure you draw all necessary construction lines to guide accurate cutting and folding.
- Label the Development: Clearly annotate the seam and other significant features on the development to aid understanding during construction.