The density of cement can be anywhere from 62 to 81 pounds per cubic foot, depending on the type of cement. General purpose cement, for example, can have a density up to 81 pounds per cubic foot.Know More
There is another type of cement called builder's cement, which can have a density of anywhere from 62 to 78 pounds per cubic foot. Bulk density is not important for cement because, when thrown in water, the liquid fills in the spaces in between the particles where the air would normally be.
General purpose cement and builder's cement have different relative density ranges because they are fundamentally different kinds of cement. General purpose cement, also sometimes referred to as GP cement, is considered straight cement, made from cement clinker, gypsum and limestone. This type of cement is used in many different settings for construction of buildings and various other structures. Builder's cement, which is also sometimes referred to as general purpose blended cement, is different from regular general purpose cement because it contains a nominal mass of fly ash. This type of cement is known to maintain its strength for a longer period of time with improved workability and a lower carbon footprint.Learn more about Building Materials
The standard ratio for general purpose mortar, type N mortar, is one part Portland cement, one part lime and six parts sand. Type N mortar is typically used for exterior walls above ground level that are exposed to the elements. It is also appropriate for interior load-bearing walls.Full Answer >
"Structural Select" grade 2-by-10 floor joists that are placed 12 inches apart with a live load of 30 pounds per square foot can span up to 21 feet. When the floor joists are placed further apart, such as 16 or 24 inches, or the structural rating of the wood is lower, the span drops significantly.Full Answer >
One cubic foot of gravel weighs, on average, 330 pounds, or about 150 kilograms. This average weight assumes that the cubic foot of gravel is dry.Full Answer >
Sheetrock has different thicknesses, which each have different weights; one-quarter-inch Sheetrock weighs 1.2 pounds per square foot, three-eighths-inch Sheetrock weighs 1.4 pounds per square foot, one-half-inch Sheetrock weighs 1.6 pounds per square foot and five-eighths-inch Sheetrock weighs 2.2 pounds per square foot. Sheetrock is a specific brand of gypsum wallboard produced by the USG Corporation of Chicago.Full Answer >