Datums

Multiple Choice

Why is an Ordnance Benchmark (OBM) important for levelling measurements?

• It provides a variable reference

• It allows accurate leveling measurements

• It offers a temporary solution

• It is used for aesthetic purposes

Multiple Choice

What technology is used to set out the site's height nowadays?

• GPS (Global Positioning System)

• Radar

• Sonar

• Barometer

Multiple Choice

What is the benefit of using GPS for setting out site height?

• It is cheaper

• It provides a more accurate means of measurement

• It is faster

• It is more traditional

Multiple Choice

What aspect of a site is set using GPS according to the text?

• Width

• Length

• Height

• Depth

Multiple Choice

What issue does using a temporary benchmark help avoid?

• Inaccuracy in measuring from uneven floors

• Miscommunication among workers

• Delays in material delivery

• Errors in electrical wiring