Surveying Basics
Chains, levels, theodolites, contours and traverses. Take your time, with an explanation after each answer.
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Surveying is the science of:
- Designing buildings
- Mixing mortar
- Testing concrete
- Determining the relative positions of points on or near the Earth's surface
Plane surveying assumes that:
- All points are at sea level
- The Earth is a perfect sphere
- There are no hills
- The Earth's surface is flat over the area surveyed
Chain surveying is based on:
- Aerial photographs
- Satellite signals
- Measuring lines and offsets to form a network of triangles
- Measuring angles only
How long is a Gunter's chain?
- 1 kilometre
- 100 feet
- 20 feet
- 66 feet (about 20.1 m)
Levelling is used to determine:
- Horizontal angles
- Soil strength
- The heights of points relative to a datum
- Property boundaries only
Which instruments are used for levelling?
- A theodolite and a ranging rod only
- A level and a levelling staff
- A planimeter
- A compass and a chain
A theodolite measures:
- Distances only
- Horizontal and vertical angles
- Temperature
- Heights only
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