5
Fireplace Framing Dimensions (Combustible Floor Systems)
Fireplace Framing Dimensions (Combustible Floor Systems)
28"
57" I.D.
FRAMING
18" MIN*
2" MIN
2" MIN
2" MIN
20"
MIN
2" MIN
12" MIN
57" I.D.
FRAMING
8 1/2"
2" MIN
2" MIN**
2 INCH MIN CLEARANCE TO COMBUSTIBLES BOTH
SIDES OF FIREPLACE
** If using a raised hearth or metal base plate, note that a
combustible wood header must be no closer than 2” to the top of
the dome top.
Figure 5 - Combustible Floor
28"
57" I.D.
FRAMING
18" MIN*
2" MIN
2" MIN
2" MIN
20"
MIN
2" MIN
12" MIN
57" I.D.
FRAMING
8 1/2"
2" MIN
2" MIN**
*
Not provided as part of fireplace
Figure 6
- Non-Combustible Hearth Extension (by others*)
1/2" THICK
CONCRETE
BOARD
CLASS "A"
CHIMNEY
SEE FIG.
29 AND 30
SEE FIG. 27
2" AIRSPACE
CLEARANCE TO
COMBUSTIBLES
ON REAR AND
SIDES OF UNIT.
ONLY NON-COMBUSTIBLE
MATERIAL WITHIN 18” OF
TOP OF OPENING.
28”
8” METAL
PLATFORM
1/2”
2”
Figure 7 - Combustible Floor
