Young Brunette Girl With Blue Eyes Reveals Her Dress On The Old Iron Bench In The Room With Brick Walls

• a slightly larger brick requires less mortar and handling (fewer bricks) which reduces cost
• ribbed exterior aids plastering
• more complex interior cavities allow improved insulation, while maintaining strength.
Blocks have a much greater range of sizes. Standard coordinating sizes in length and height (in mm) include 400×200, 450×150, 450×200, 450×225, 450×300, 600×150, 600×200, and 600×225; depths (work size, mm) include 60, 75, 90, 100, 115, 140, 150, 190, 200, 225, and 250. They are usable across this range as they are lighter than clay bricks. The density of solid clay bricks is around 2,000 kg/m³: this is reduced by frogging, hollow bricks, etc.; but aerated autoclaved concrete, even as a solid brick, can have densities in the range of 450–850 kg/m³.