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A load-bearing wall or bearing wall is a wall that is an active structural element of a building — that is, it bears the weight of the elements above said wall, resting upon it by conducting its weight to a foundation structure. [1] The materials most often used to construct load-bearing walls in large buildings are concrete, block, or brick.
The density of solid clay bricks is around 2000 kg/m 3: this is reduced by frogging, hollow bricks, and so on, but aerated autoclaved concrete, even as a solid brick, can have densities in the range of 450–850 kg/m 3. Bricks may also be classified as solid (less than 25% perforations by volume, although the brick may be "frogged," having ...
Stronger and less porous engineering bricks (UK Class A) are usually blue due to the higher firing temperature [3] whilst class B bricks are usually red. Class A bricks have a strength of 125 N/mm 2 (18,100 lb f /sq in) and water absorption of less than 4.5%; Class B bricks have a strength greater than 75 N/mm 2 (10,900 lb f /sq in) and water ...
bricks 1,600 3.7 cement 3,230 7.5 clay 15,200 35.4 concrete 580 1.3 copper 25,770 59.9 flat glass 10,620 24.7 gypsum 10,380 24.1 hardwood plywood & veneer 15,190 35.3 lime 1,920 4.5 mineral wool insulation 12,600 29.3 primary aluminum 80,170 186.5 softwood plywood & veneer 3,970 9.2 stone 1,430 3.3 virgin steel 10,390 24.2 wood lumber 2,700 6.3
There is an effective R-value for a north facing 10-inch (25 cm) wall of R0=10 hr ft 2 °F/Btu, [17] which corresponds to thermal conductivity k=10 in x 1 ft/12 in /R0=0.33 Btu/(hr ft °F) or 0.57 W/(m K) in agreement with the thermal conductivity reported from another source. [18]
The specific weight, also known as the unit weight (symbol γ, the Greek letter gamma), is a volume-specific quantity defined as the weight W divided by the volume V of a material: = / Equivalently, it may also be formulated as the product of density, ρ, and gravity acceleration, g: = Its unit of measurement in the International System of Units (SI) is newton per cubic metre (N/m 3), with ...