When chasing in blockwork, what is the maximum depth that is permitted for horizontal chases?

• 1/4 of the wall thickness

• 1/8 of the wall thickness

• 1/6 of the wall thickness

• 1/3 of the wall thickness

Which of the following is a false advantage of bending copper piper rather than using fittings?

• There is less frictional restriction for the flow of water

• It is less costly

• Long sections of pipework can be prefabricated at once

• You must hold a hot works permit in order to bend pipework

Low Carbon Steel is made from:

• 99.85% iron and 0.15% carbon

• 90.9% iron and 9.1% copper

• 95.55% iron and 4.45% steel

• 50.5% iron and 50.5% carbon

The image shown here is referred to as?

• Oxidation

• Pitting

• Dezincification

The colour used to identify medium grade Low Carbon Steel pipework is?

• Red

• Yellow

• Blue

• Brown

Press fit type fittings can be identified by which of the following description?

• A copper made fitting, also be identified as 'endex'

• A copper made fitting with a deposit of solder manufactured into the fitting

• A copper made fitting with rubber o-ring compressed onto the pipe to create a water tight seal

• A brass made fitting, the water tight seal is kept by a means of a nut and olive

Identify: Spring toggle fixing

• 
• 
• 
• 
• 

The required distance between the centres of two equal tee fittings on a copper pipe is 600 mm. The 'X' dimension (centre of tee to end of pipe) of the tee fittings is 10 mm. The length of pipe required for an accurate measurement is:

• 620mm

• 600mm

• 590mm

• 580mm

To calculate how much LCS pipe is required you will need to work out the centre-to-centre measurements, how is the achieved?

• Working out the length of pipes, minusing for the X-dimensions

• Working out the length of pipes, minusing for the Y-dimensions

• Working out the length of pipes, minusing for the Z-dimensions

Select the correct image: Drain valve.

• 
• 
• 
• 
•