5
3
0
5
/8
"
65"
F
F
i
i
r
r
e
e
p
p
l
l
a
a
c
ce
F
F
F
r
r
r
a
a
a
m
m
m
i
i
i
n
n
ng
D
D
D
i
i
i
m
m
m
e
e
e
n
n
n
s
s
s
i
i
i
o
o
o
n
n
ns
(
(
(
C
C
C
o
o
o
m
m
m
b
b
b
u
u
u
s
s
s
t
t
t
i
i
i
b
b
b
l
l
l
e
e
e
F
F
F
l
l
l
o
o
o
o
o
o
r
r
r
S
S
S
y
y
y
s
s
s
t
t
t
e
e
e
m
m
m
s
s
s
)
)
)
Figure 5 - Combustible Floor
2" MIN**
CLASS “A”
CHIMNEY
8
1/2"
57" I.D.
FRAMIN
G
2"
MIN*
SEE FIG. 27
AND 28
* 2 INCH 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 6
- Non-Combustible Hearth Extension (by others*)
2”
ONLY NON-COMBUSTIBLE
MATERIAL
WITHIN 18” OF
TOP OF OPENING.
SEE FIG. 26
2” AIRSPACE
CLEARANCE TO
COMBUSTIBLES
FROM REAR
AND SIDES
2" MIN
1/2”
1/2” THICK
CONCRETE
BOARD
20"
53
"
20”
28”
8” METAL
PLATFORM
12"
MIN
MIN
12"
MIN
*
Not provided as part of fireplace
Figure 7 - Combustible Floor
