L2 Cavity wall - Cold bridging, cavity trays, lintels

What type of concrete block would you use, if you wanted to improve the thermal properties of a cavity wall?

• Dense

• Trench

• Aerated

• Fibolite

Where does 'Cold Bridging' normally occur?

• Foundation

• Internal partition wall

• In the mortar

• Windows and doors

What materials can be used to prevent 'Cold Bridging'?

• Cavity Closures and Insulated DPC

• Wall ties and insulation clips

• DPC and DPM

• Lean concrete mix

Sand blinding sits on top of hard-core when building a solid concrete floor?

• True

• False

Does an air brick require a cavity tray installed above it?

• No

• Yes

What is the maximum distance weep holes should be bedded in when installing a cavity tray?

• 400mm

• 425mm

• 450mm

• 475mm

Identify the cavity tray situation image.

• Suspended Block and beam floor

• Meter box

• Window reveal

• Solid concrete floor

Identify the cavity tray situation image.

• Suspended block and beam flood

• Meter box

• Solid concrete floor

• Window reveal

Identify the cavity tray situation image.

• Suspended block and beam floor

• Meter box

• Solid concrete floor

• Window reveal

Identify the cavity tray situation image.

• Suspended block and beam floor

• Meter box

• Solid concrete floor

• Window reveal