Standard clay brick size – length 222mm width 106mm height 73mm
Why? – so than an average man can easily pick it up and handle it with one hand and that is also why the Asian brick is smaller to fit their smaller hands
Built-in with mortar – 235 x 106 x 85mm. Brick length is 2 x width and 3 x thickness
Why? – so that you can build in a bond to ensure wall strength
Bricks were also the creator of the following:
- The first item to ever be made in a mold and not just shaped by hand
- By being made like this, also the beginning of standardizing articles to be the same in size, color, weight, etc. and mass production as well as production lines.
- Also, the first in numbering products as well as trademarking. Brickmakers were the first to mark each individual brick with their mark or name before it was baked. This started when the Israelites were slaves in Egypt and each individual was forced to make a certain amount of bricks every day. The only way to ensure this was to count each slave’s daily production and they only counted bricks with names or marks on.
Classification of bricks:
- NFP (Non-Face Plaster) Commonly known as “stocks” or “mamparras”. Suitable for general building work which is then plastered and painted. Compressive strength should not be less than 7Mpa.
- NFX (Non-Face Extra) Commonly known as “Clinkers) Used in general building work for extra durability in such areas as below ground level, retaining walls, in-between concrete columns, etc. Compressive strength should not be less than 14Mpa.
- (E) Engineering bricks. For special structures or loadbearing purposes, also water-bearing structures like manholes. Compressive strength should be in the region of 21Mpa.
- FBA (Face Bricks Aesthetic) units that are selected or produced for their durability and aesthetic effect deriving from non-uniformity of shape, size, and color – normally up to 7% allowed. Basically, the “lowest” range of Face Bricks.
- FBS (Face Bricks Standard) units that are selected or produced for their durability and uniformity of shape, size, and color – normally up to 5% difference allowed. FBS Bricks are the “middle” range of Face Brick
- FBX (Face Bricks Extra) units that are selected or produced for their durability and a high degree of uniformity of shape, size, and color – normally up to only 2% difference allowed. This being the top of the range of Face Brick
The number one rule when building with any Face brick is to MIX!! To avoid color banding, it is a must that Face bricks are taken from different packs and carefully blended during the building operation.
Mortar mixes with sand and cement must always be in volume and not weight, therefore a 4: 1 mix will consist of 4 wheelbarrows of sand mixed with 1 wheelbarrow of cement in volume, or roughly 3 wheelbarrows of sand and 1 bag of cement. To lay 1000 standard bricks you will need 3 bags of cement to 06 m³ of building sand or the equivalent of 4 bags of cement to 1 ton of sand.
To plaster 100m² 15mm thick you will roughly need 4ton (3m³) plaster sand and 15 bags of cement