Masonry Flashcards
What is the standard brick size in the UK?
215 x 102.5 x 65mm
What size is the standard brick mortar joint?
10mm
What size is the standard blockwork size in the UK?
440 x 215 x 100mm
What are non standard bricks called?
Specials
Why are special bricks less commonly used in construction?
Because they are more expensive and take longer to produce
Name 3 different brick types
- Clay fired bricks
- Calcium silicate bricks
- Concrete bricks / blocks
What is the recommended size of movement joint for a clay fired brick?
12mm
What is the recommended size of movement joint for a calcium silicate brick?
7.5 - 9mm
What is the recommended size of movement joint for a concrete brick / block?
6mm
In what two locations does cracking usually occur on the facade due to expansion and contraction in the building?
- On the short returns of walls
2. Underneath window sills
Where is it best to locate movement joints?
Where there is lateral support provided by internal walls
What two ways are wall tiles placed at locations where there is a movement joint?
- At 300mm centres where there is lateral support
2. Over the individual masonry leaf
There is no way of preventing the absorption of soluble salts from the ground by brickwork below the horizontal dpc level. However, how can we reduce this effect?
By using dense bricks below the dpc
The height of one concrete block coincides with the height of how many bricks?
3 Bricks
For non-loadbearing partitions, what are the dimensions of concrete blocks?
440x215x75mm
