26
FIGURE 43
FIGURE 44
FIGURE 45
The STANDARD fireplace is not rated for installation on a
combustible floor system unless used in the Fire-Lite application
(see Pages 47-55). STANDARD fireplaces must be built upon a concrete
support slab with no wood underpinnings. Proper reinforced concrete
support slab for STANDARD installations may include the following
types:
1. Slab on grade: standard residential, minimum four inch (4”) thick,
2500 psi concrete foundations on properly compacted fill. This type
foundation can support Isokern installations up to thirty feet (30’) overall
height (brickledge installations not included). (Figure 43)
2. Slab-on-grade foundations, thickened and reinforced: for additional
load carrying. (Figure 44)
3. Off-grade slab on foundation walls and footings.
Projects with off-grade floor systems as well as upper story
installations require this type of support. (Figure 45)
When building off-grade support slabs the code required hearth
extension substrate should be built as a continuation of the support slab
for the STANDARD unit. (Figure 45)
Supports for off grade slabs must be concrete or steel and ca-
pable of supporting the slab, Isokern unit and the chimney.
For multi-floor and back-to-back installations proper
weight computation on an individual basis is required. Consult local
structural engineer for load bearing requirements.
Important:
Foundations and footings must meet local code and be
approved by the local building authority. For any foundation design and
load requirements check with local structural engineer. It is the responsi
-
bility of the General contractor to insure adequate foundations.
STANDARD fireplace weights and “foot print” areas:
The total fireplace weight for each STANDARD model
listed below includes: STANDARD unit pumice parts only:
A. Model STANDARD 36: 1205 lbs.
B. Model STANDARD 42: 1324 lbs.
C. Model STANDARD 46: 1450 lbs.
Totals are exclusive of any chimney components.
See page 29 for Isokern DM chimney component weights.
The “footprint” area for each model is as follows:
A. Model STANDARD 36 @ 43” x 25 1/4” = 7.54 sq. ft.
B. Model STANDARD 42 @ 49” x 25 1/4” = 8.59 sq. ft.
C. Model STANDARD 48 @ 53” x 25 1/4” = 9.30 sq. ft.
“Footprint” areas listed above are base plate dimensions for
each model and are exclusive of code required hearth extension areas.
See page 25 for hearth extension dimensions.
Note:
Additional support slab area may be required at the side or back of
the STANDARD unit to provide bearing for structural supports to a
DM 54 offset chimney sequence.
(See pages 33-36 for offset chimney support requirements.)
Concrete Support
