Bear-Cat Aluminum
Bill of Materials
The following listing is to serve as a general guide only for hull cost
estimating purposes; do not use for buying materials without first
checking the instructions and plans for various options (such as
differences due to changes in powering methods which will vary each
boat), and to local suppliers for what material sizes may be available.
In other words, each builder must make decisions as to how he will build
the boat and use materials, and then take off a listing to suit. Note
that if the length of the boat is varied, so too will the material
listing. Materials are listed for the basic hull members only and do not
include options, variations, interior members, etc. Thus the listing will
vary and not all members are necessarily included - check the plans. Only
marine alloy of the 5000- or 6000-series should be used. Common
acceptable alloy designations include 5052, 5083, 5086, 5454, 5456, and
6061. For saltwater use, the 5086 is recommended except that extruded
shapes can be 6000-series. While full-length hull plating panels can be
formed by welding, single long panels are preferable to performing this
procedure. In any case, the builder should check for plate or sheet size
availability and plan the material utilization for minimum waste. While
shorter members can always be butt welded to form long members, a doubler
plate is usually advisable behind or on top of all such joints, lapping a
considerable distance, and being welded all around.
MEMBERS
|
SIZE/TYPE
|
AMT RQD
|
|
Chine bars
|
1/2"-3/4" round bar
|
92'
|
Sheer
|
1-1/2" Sch. 40 pipe
|
60'
|
Tunnel, cockpit corners
|
3" Sch. 40 pipe
|
26'
|
Keels
|
3/8" x 3" flat bar
|
33'
|
Stems
|
3/8" plate
|
2' x 10'
|
Spray deflectors
|
1/4" x 1-1/2" flat bar
|
92'
|
Longitudinal stiffeners
|
1/4" x 1-1/2" flat bar
|
480'
|
Cockpit sole and lining stiffeners
|
1-1/4" x 1-1/4" x 3/16" angle
|
300'
|
Decking stiffeners
|
1/4" x 1-1/4" flat bar
|
60'
|
Bulkhead & misc. stiffeners
|
1/4" x 1-1/4"
1/4" x 2"
|
80'
200'
|
Transom cross beam
|
6" x 2.034" x .314 channel
|
10'
|
Transom
|
1/4" plate
|
2'3" x 10'
|
Bulkheads
|
.188"
|
110 sq.ft.
|
Frames
|
1/4" plate
|
130 sq.ft.
|
Bottom plating (hulls)/motor wells
|
.160" or .188"
|
1 @ 5' x 26'
|
Tunnel plating
|
.125"
|
Varies from 4' to 7' wide x 26'
|
Tunnel side plating
|
.125"
|
1 @ 4' x 26'
|
Side plating
|
.125"
|
2 @ 4' x 26'
|
Upper side, cockpit lining, side decks
|
.100"
|
2 @ 4' x 22'
|
Cockpit sole
|
.125" diamond plate or equal
|
3 @ 3' x 22'
|
Foredeck
|
.125"
|
1 @ 3' x 10'
|
Tanks
|
.125"
|
46 sq.ft.
|
Bear-Cat Cuddy Aluminum
Bill of Materials
MEMBERS
|
SIZE/TYPE
|
AMT RQD
|
Chine bars
|
1/2"-3/4" round bar
|
102'
|
Sheer
|
1-1/2" Sch. 40 pipe
|
66'
|
Tunnel, cockpit corners
|
3" Sch. 40 pipe
|
29'
|
Keels
|
3/8" x 3" flat bar
|
33'
|
Stems
|
3/8" plate
|
2' x 10'
|
Spray deflectors
|
1/4" x 1-1/2" flat bar
|
102'
|
Longitudinal stiffeners
|
1/4" x 1-1/2" flat bar
|
530'
|
Cockpit sole and lining stiffeners
|
1-1/4" x 1-1/4" x 3/16" angle
|
330'
|
Decking stiffeners
|
1/4" x 1-1/4" flat bar
|
60'
|
Bulkhead & misc. stiffeners
|
1/4" x 1-1/4"
1/4" x 2"
|
80'
200'
|
Transom cross beam
|
6" x 2.034" x .314 channel
|
10'
|
Transom
|
1/4" plate
|
2'3" x 10'
|
Bulkheads
|
.188"
|
110 sq.ft.
|
Frames
|
1/4" plate
|
130 sq.ft.
|
Bottom plating (hulls)/motor wells
|
.160" or .188"
|
1 @ 5' x 29'
|
Tunnel plating
|
.125"
|
Varies from 4' to 7' wide x 29'
|
Tunnel side plating
|
.125"
|
1 @ 4' x 29'
|
Side plating
|
.125"
|
2 @ 4' x 29'
|
Upper side, cockpit lining, side decks
|
.100"
|
2 @ 4' x 24'
|
Cockpit sole
|
.125" diamond plate or equal
|
3 @ 3' x 25'
|
Foredeck
|
.125"
|
1 @ 3' x 10'
|
Tanks
|
.125"
|
52 sq.ft.
|
Cabin side
|
.125"
|
80 sq.ft
|
Cabin front
|
.125"
|
12 sq.ft.
|
Cabin top
|
.125"
|
28 sq.ft.
|
Cabin bulkhead
|
.125"
|
34 sq.ft.
|
Stiffeners, beams
|
3/16" x 1-1/2" flat bar
3/16" x 2" flat bar
|
60'
80'
|
Return
|