While larger fireplaces complete with mantel and hearth built in seating and wood storage boxes can be as large as 15 feet tall 15 feet wide and 4 feet deep.
Outdoor masonry fireplace dimensions.
Technical notes 19a residential fireplaces details and construction rev may 1980 reissued jan.
The fireplace opening is a very important element in fireplace design.
No time calculating firebox dimensions or thinking about draft details your contractor can simply focus on their artistry.
The configuration and dimensions of most other components of the fireplace and chimney are based primarily on the dimensions of the fireplace opening selected.
Proper detailing and construction can also contribute to the overall performance of the fireplace.
The firebox design is critical.
The rear wall of the firebox rises vertically from the floor of the fireplace and then begins to slant towards the fireplace opening just at the top of the gas logs.
Once your concrete footing has cured for 24 hrs or more you will need to build a level base on which to construct your firebox.
Here is a photo of a new masonry firebox in my own home.
I suggest 4 solid block for this purpose.
Figure 1 shows details and table 1 provides the widths and heights of fireplace.
By using our outdoor fireplace kits you can still achieve your custom look but can be assured the guts of your masonry outdoor fireplace kit is built correctly.
Next you will build your firebox to whatever size you have chosen using firebrick and refractory cement from your local masonry supply.