A non-porous material is one that cannot absorb liquid or gas. Glass, metals and hard plastics are examples of non-porous materials.Know More
Porous materials have holes or pores which makes it easy for gas or liquids to pass through them. A sponge is an excellent example of a porous material. Semi-porous materials allow certain liquids or gas through, usually by diffusion. An example of semi-porous materials are those used to purify water. Human skin is is also a semi-porous material.
A non-porous material lets nothing through. It is generally too hard for things to pass through and doesn't have holes to allow substances in or out.Learn more about Building Materials
The formula to calculate the weight of asphalt material in a given area is equal to the volume of the material multiplied by the density of the material. Generally, the volume is measured in cubic feet, and is calculated by multiplying the surface area by the thickness of the asphalt.Full Answer >
in construction, "formwork" refers to any mold that is subsequently filled with another material, such as concrete, to ensure accuracy and stability. A formwork consists of both horizontal and vertical braces as well as joints between each segment.Full Answer >
To calculate the R-value in insulation, determine the R-value of the specific insulating material. For multilayer installations, determine the R-values of each layer, and add the values together to get the total R-value of the system. The higher the R-value, the greater its insulating properties.Full Answer >
Bricks vary in weight depending on their material, manufacturing process and size. At Nash Brick, a solid modular brick that is 7 5/8 inches long, 3 1/2 inches wide and 2 1/4 inches high weighs 4.3 pounds. A Watsontown brick with identical dimensions weighs 4.9 pounds.Full Answer >