# Weight of Coal

### Weight of Coal

What's the approximate weight of coal per cubic foot?

Thanks again, you guys are great!!
watkinsdr

Stoker Coal Boiler: AHS S260 Boiler

edit: this would be nut coal.
Last edited by coaledsweat on Fri Apr 13, 2007 10:05 pm, edited 1 time in total.
coaledsweat

Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea

I think some where on here there's a post with a conversion chart for weight to cubic feet I will try to find it and post it i think it said 1 cubic foot of coal = 50 to 59 lbs. ill look for it
coal berner

Stoker Coal Boiler: 1986 Electric Furnace Man 520 DF
Stove/Furnace Make: Electric Furnace Man
Stove/Furnace Model: DF520

94# if it a solid square foot block, 69# when broken.
I believe it continues to get lighter as you make it smaller sizes.
coaledsweat

Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea

From an old book (1980) in my library.

Taking into account the slight variations of coal qualities among producers the following table list average weights.

Coal Size - Lbs/Cu Ft
Broken ------- 56.85
Egg ----------- 57.74
Stove --------- 58.15
Nut ------------ 58.26
Pea ----------- 53.18
Buckwheat -- 54.04
dll

HEY dll I see you do not show rice or barley doesnt your book show them just wondering
coal berner

Stoker Coal Boiler: 1986 Electric Furnace Man 520 DF
Stove/Furnace Make: Electric Furnace Man
Stove/Furnace Model: DF520

coal berner wrote:HEY dll I see you do not show rice or barley doesnt your book show them just wondering

The table does not have any other sizes. On another page in the book I found a dimensional chart for each size of coal. I did some mathematical analysis and plotting of the data to see if I could derive the figures for Rice and Barley and came up with some strange numbers. It's possible that there is/are other variable(s) in there such as accuracy of the data gathered (although they do show the Lbs/Cu Ft to two decimal places) and/or the operating characteristics of the breaker.
My best guess for Rice and Barley would be in the 53 to 54 area.
dll

The rice would be slightly less per cubic ft. than the Buck and the Barley would be even less.
Richard S.

Stoker Coal Boiler: Van Wert VA1200
Coal Size/Type: Buckwheat/Anthracite