Unit Weight Of Hardwood

Density of wood species.

Unit weight of hardwood.

However a wood s weight will also greatly depend on it s moisture content mc. M c of the hardwood to hardwood must be under a 4 maximum difference. Density refers to the amount of wood in a unit per volume of wood. Kilograms per cubic meter kg m 3.

With the specific gravity around 1 5 solid wood substance or lignocellulose as it is commonly called today weighs around 1500 kg m 3 93 6 lb ft 3 at theoretical most no air water or other fluids in cell pores which would decrease the weight of the wood per unit of volume. The ratio of dry weight and green volume of the given wood is the basic wood density. More wood content in a specific volume means it has a high density. For example a dense hardwood hickory as an example will weigh more than a softwood pine as an example because a cubic foot of hardwood has more mass than a cubic foot of softwood.

This does not imply softness or hardness of wood. The density or hardness of wood varies by species and the value is necessary to approximate the weight of lumber by volume. After you have the density and the volume multiply them together to find the total weight. Find weight of wood.

Usually it s pounds per cubic foot lbs ft 3 or in metric units. Firewood weight firewood weight is determined by two different factors the density of the wood and the amount of moisture it contains. 1 kg m3 0 001 g cm3 0 0005780 oz in3 0 16036 oz gal imperial 0 1335 oz gal u s 0 0624 lb ft3 0 000036127 lb in3 1 6856 lb yd3 0 010022 lb gal imperial 0 008345 lb gal u s 0 0007525 ton yd3. Water content in wood.

When tested astm d143 an ipe deck is around eight times harder than california redwood and three times stronger than teak. The density of pure water is also 62 4 lbs cu ft pounds per cubic foot and if we know that a sample of apple has a sg of 0 73 then we can calculate that its density is 0 73 x 62 4 45 552 lbs cu ft. For instance a board that has just been freshly cut called green wood can weight more than double its oven dry weight. Densities of seasoned dry wood are indicated in the table below.

The following wood density chart will tell you how much weight you. Note kg cu m divided by 16 01846 lbs cu ft. Density of water 62 4 lb ft3 1000 kg m3 1 lb ft3 16 018 kg m3 0 016 g cm3 0 00926 oz in3 2 57 oz gal imperial 2 139 oz gal u s 0 0005787 lb in3. Wood also contains measurable quantities of organic extractives such as such as terpenes resins and polyphenols such as tannins sugars and oils.

The density of a wood is determined based on the multiple growths and physiological factors such as age diameter height radial growth geographical location site and growing conditions etc. Wood is categorized into two groups based on their density as softwood and hardwood. Unit weight of hardwood. As specific gravity is just a comparison it can be applied across any units.