Barrelback 19 Bill of Materials
LUMBER & PLYWOOD: All plywood must be intended for marine or
exterior use; interior grades are not acceptable. The marine grade panel
features higher grade inner ply cores, while the exterior plywood grade
cores may have voids not apparent to the eye, and may also use cores made
from woods not as suitable for marine applications. In most cases, the
glues used in both the marine and exterior panels are the same waterproof
type, however, the decision to use exterior panels in lieu of marine
panels must lie with the builder, considering the particular use of the
panel in the boat and the expected service. The letters A, B and C
designate the grade of the exterior veneers with A grade the best, etc.
Douglas-fir plywood is acceptable for all plywood, although mahogany or
other attractive veneers are preferable in many instances as described in
these instructions.
All lumber used should be first grade, free from knots, shakes, checks,
or other defects. All widths are actual size except for lumber 2"
in thickness where widths are also nominal. All thicknesses are
standard finished sizes, with 1" lumber being four quarters
material, usually finished to about 3/4". Grouping lumber and
purchasing "random-random" material to resaw to the required
size will result in considerable savings. All lumber sizes should be
checked to the work before purchasing wherever possible. Lumber typical
to the locale and proven in use in boats of similar type can be used as
long as the weight, strengths, and characteristics are similar. Suitable
boatbuilding woods include white oak, mahogany (Mahog.- Philippine dark
red, American, or African types commonly used in boats), Sitka spruce
(SSP), Alaskan cedar, Port Orford cedar, Douglas-fir (DF), longleaf
yellow pine, apitong, and teak.
HULL MATERIAL LISTING: The following material listing is an
estimate of the materials required to build the basic hull. The material
listing is intended to serve as a general guide only and should not be
used to purchase materials until the various options and alternatives
have been checked to the plans, to the work, and to the materials which
may be available in the area in which the hull will be built. The listing
may vary due to the amount of waste and other variables that cannot be
controlled.
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ITEM
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MATERIAL
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SIZE
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NO.
PCS.
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LUMBER:
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Framing/beams/transom
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DF or Mahog
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1" random-random stock, 110 bd. ft. with some widths to 10"
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Camber boards, etc.
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Mahog, DF, SSP
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2" x 6" x 10'
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3
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Keel
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Mahog, DF
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3/4" net x 4" x 15'
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2
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Chine logs
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Mahog, DF, SSP
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3/4" net x 1-3/4" x 20'
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2
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Motor stringers
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Mahog, DF
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2" x 4" x 14'
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2
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Motor stringer blocking
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Mahog, DF
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2" x 4" x 12'
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1
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Battens
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Mahog, DF, SSP
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3/4" net x 1"
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360'
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Sheer clamps
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Mahog, DF, SSP
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5/8" net x 1-1/8"
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110'
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Sheer filler
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Mahog, DF, SSP
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5/8" net x 3/4"
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160'
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Spray rail
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Mahog
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5/8" net x 1-1/2" x 20'
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2
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Carlings
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Mahog, DF, SSP
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5/8" net x 1"
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40'
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Deck clamps
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Mahog, DF, SSP
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5/8" net x 1-1/2"
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40'
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Deck strongback
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Mahog, DF, SSP
Mahog, DF, SSP
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1" x 4" x 3'
1" x 3" x 16'
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1
1
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Deck battens
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Mahog, DF, SSP
Mahog, DF, SSP
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1" x 2" x 18'
1" x 2" x 16'
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2
2
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Hatch framing
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Mahog, DF, SSP
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1" x 3" x 8'
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4
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Covering board
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Mahog or to suit (*)
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Hull/deck planking
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Mahog veneer and/or plywood, 1/8" thick random-random stock,
approx. 1050 sq. ft.
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(*) See instructions - varies with option.
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PLYWOOD:
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ITEM
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MATERIAL
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SIZE
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NO.
PCS.
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Stem, breasthook, transom, floor timbers
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DF Ext. AB
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3/4" x 4' x 8'
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3
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Gussets, seats, floorboards
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A-B Ext.
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1/2" x 4' x 8'
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7
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Sub-deck
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A-B Ext.
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1/4" x 4' x 8'
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6
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FASTENINGS:
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Screws: Flathead wood type, bronze or hot dipped galvanized
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1" #8 = 500 (4 gross)
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1 1/4" #8 = 600 (5 gross)
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1 1/2" #8 = 900 (6 gross)
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2" #10 = 300 (2 gross)
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3" #14 = 24 (2 doz.)
Nails: Ring type boat nails, bronze or Monel
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1" #12 = 3 lbs.
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1-1/4" #12 = 1 lbs.
Carriage Bolts: Bronze or hot dipped galvanized complete with
nuts and washers. Size per schedule; take lengths directly from work.
Adhesives: Epoxy adhesives are advised throughout the
construction. These may be an epoxy adhesive or epoxy resin. Epoxy
resins should be used with thickeners (silica or equal) per the
instructions with the resin and/or thickening agent. Due to the noted
options, the amount required is difficult to estimate. Start with a
gallon container of epoxy and after use you will be better able to
estimate the total amount required.
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