29
DM 54 Chimney: Component Weights
Isokern DM Chimney Weights:
Total installed Isokern DM chimney weight will vary
according to each specific installation. Total installed chimney
weight will be based on the overall height and the configuration of
the chimney system.
Chimneys may be straight vertical stacks of DM 54
outer casing and inner liner but may also include the use of offset
chimney blocks, brickledge, chimney reinforcement, brick/stone
veneers, cement crown caps and clay chimney pot termination.
The DM 54 chimney component weights are as follows:
Small crown cap: 80 lb.
Large crown cap: 100 lb.
Brickledge: 110 lb.
14” diameter inner liner: 40 lb.
Outer casing block: 90 lb.
Offset block*: 110 lb.
*Construction of an offset block sequence will shift
a portion, if not all of the chimney load off of the firebox and
smoke dome. Additional reinforced concrete footing and slab area
may need to be provided adjacent to or as a continuation of the
primary support slab area for bearing the steel or masonry support
required for an offset sequence.
Notes:
Plan chimney configuration carefully before constructing
the required reinforced concrete support foundation for the STAN-
DARD fireplace. Be sure that enough structural masonry area is
available to support any offset chimney sequence included in the
proposed chimney design.
Isokern is not responsible for site specific structural
support details and load specifications for STANDARD fireplace
and DM chimney system installations. Consult a local structural
engineer for proper job-specific support structure design, sizing
and load bearing specifications.
Unless otherwise noted, all floor drawings in this manual
are merely illustrations to indicate the presence of an underlying
noncombustible support structure to the STANDARD installation.
BRICKLEDGE
BLOCK
OFFSET
CASING
OUTER
LINER
INNER
CROWN CAP
LARGE
CROWN CAP
SMALL
