Masonry Fireplace Firebox Dimensions

If the fireplace opening is greater than 6 ft.

Masonry fireplace firebox dimensions.

Prefabricated fireplaces factory built or prefabricated fireplaces are relative newcomers to the fireplace scene. The technical notes address all the necessary features in a brick fireplace and their relationship to one another. Traditional style firebox with angled back wall straight back wall option also available. Brickwork should be strong enough to hold any decorative stone or other materials used on the exterior of the fireplace.

The firebox of a concrete or masonry fireplace shall have a minimum depth of 20 inches 508 mm. 30 36 42 and 48. Mike begins by snapping a chalkline to mark the front face of the fireplace. 3870 to 38 700 mm2 depending on the other components in the exterior air supply system.

Hearth may be a reinforced brick masonry cantilever. Fireplace design details checklist sides of firebox must pinch in towards back back wall of fireplace must be straight up for first 12 inches back wall must slope towards front for remainder of height width and height of opening must come from table below smoke shelf up above fireplace must be sized. Typical firebox assembly. Our conventional model is compatible with either masonry chimneys or ul 103 metal chimney systems.

Once the area was tented it was time to layout the base of the firebox on the slab. 200 mm on each side of the fireplace opening and 16 in. Details are provided in technical notes 19a while proper chimney construction is outlined in technical notes. This article series provides information about masonry fireplaces.

He draws a line along the back to establish the 20 in. Then he draws a centerline and measures out 21 in. The size of fireplaces will vary but masonry fireboxes should be at least four inches thick and 20 inches deep. Oversized models available in 60 and 72 openings with dual chimney systems.

400 mm in front of the fireplace opening. Fireplace flue size specifications relation of fireplace size to flue opening dimensions table of required chimney flue size and flue dimensions for masonry fireplaces. The throat opening shall not be less than 4 inches 102 mm deep. In each direction to mark the 42 in.

The air inlet damper assembly area as shown in fig. Model building codes also require that the hearth extend a minimum of 8 in. 2 generally ranges from 6 to 60 sq in. To provide adequate draft and safe venting of combustion products the chimney flue for a fireplace has to be adequate in size or cross sectional area.

The throat shall not be less than 8 inches 203 mm above the fireplace opening.