site measurements and scales Flashcards
What is the accuracy range of laser distance measures?
+/- 1.5mm in a range of 50M
Laser distance measures send out a focused pulse of light to a target and calculate distances based on the reflection.
What does a theodolite consist of?
A telescope mounted to a swivel both horizontally and vertically
Levelling is accomplished with the aid of a spirit level mounted on a tripod with adjustable legs.
What is the purpose of a zip level?
To measure elevations, saving time on measurements and calculations
It is an electronic device used in construction.
What is a measuring wheel used for?
Estimating project surveys and verifying measurements
It is frequently used for marking out or estimating where precise equipment is needed.
What tools are used by engineers to measure the distance between two sides of something?
Calipers and micrometers
These tools have been used for many years and newer variants include digital displays.
What are laser levels and measures used for?
Providing accurate horizontal and vertical lines for installation
They are often self-levelling and more accurate than spirit levels.
How do water levels function?
They measure equal heights at two distant points
Water levels are designed for single-handed use and find their own level.
What are scales used for in BSE and constructions?
Passing on and sharing complex information, showing dimensions and positions
They facilitate understanding without the need for written dimensions.
What does a scale of 1:20 mean?
Multiply measurements by 20 to obtain full-size measurements
Alternatively, divide measurements to create a scale drawing.
How are scale calculations determined?
Based on the scale in use, using the second number in the scale ratio as a multiplier
Real-world measurements are divided by the scale ratio for scaled drawings.
Fill in the blank: A measuring wheel is ideally suited to estimating _______.
project surveys
It is commonly used for marking out or verifying measurements.
True or False: Water levels are ineffective for unsighted room-to-room measurements.
False
Water levels are ideal for accurate unsighted measurements.
