Masonry Fireplace Dimensions Standard

There should be no voids except for the ash pit and external combustion air ducts formed in the base assembly as shown in figs.

Masonry fireplace dimensions standard.

There are five key dimensions to measure the height and width of the opening the height and width of the back wall of the fireplace and the depth of the fireplace. The best fireplace design dimensions are the ones that ensure your fireplace will not smoke. However if the fireplace s floor is at least 8 inches taller than the hearth extension the hearth extension s thickness must only be at least 3 8 inch. Good draft is normally achieved if the chimney height is such that the vertical distance from the top of the fireplace opening to the top of the chimney is at least 15 feet.

All the data is courtesy of the brick industry. A 48 wide fireplace would be squat looking at a height of 32 and using the same proportion as the smaller fireplace would make the opening 42 tall which is a 70 increase in the opening area so the chimney would be more expensive. The minimum thickness of a standard hearth s flooring within the fireplace is 4 inches. The technical notes address all the necessary features in a brick fireplace and their relationship to one another.

Foundation walls raise the fireplace to the desired level and should be constructed of masonry or concrete with a minimum thickness of 8 in. If the chimney is less than 15 feet a larger clay flue size should be considered than what is required for a chimney of 15 feet or more. Single face fireplace dimensions including the firebox depth width and height along with the proportionate flue size are given in technical notes 19. This will tell you which of the most common sizes you are looking at buying.

The key fireplace dimensions that your builder should consider are the opening height and width and the depth of the firebox. Rumford fireplaces are for most homes an improvement over the standard masonry fireplace their tall dimensions are elegant and dramatic and they radiate more heat into the room. The brick industry association is perhaps the most respected source of fireplace design criteria in the world. The hearth pad requires a thickness of at least 2 inches.

Be sure your mason builds your fireplace according to the values in the following table. The firebox in a rumford fireplace is shallow and tall so the fire sits closer to the front of the room and the large opening reflects more heat into the room.