Mark Twain Bill of Materials

The following list of materials is intended to be a general guide only. Before ordering any materials, the text and plans should be checked for possible options. All lumber listed as 1" stock is to be standard "lumberyard four-quarter" material which when finished may vary to somewhat less or slightly more than 3/4" in thickness. All widths are NET and all lengths allow for cutting to fit. Grouping lumber and purchasing random-random material to resaw to the required size will result in considerable savings. All lumber used should be first grade free from shakes and knots. Although spruce (Sitka variety) and mahogany (dark red Philippine type) are called out in the listing, lumber typical to the locale and of similar types and weights may be substituted. All plywood (PW) is to be marine (MAR) or exterior (EXT) grade. The marine-type is preferable as the inner cores are solid and thus the panel has more structural integrity. Douglas-fir (DF) is satisfactory with the quality of the exposed faces of the veneer being designated by the letters "A" or "B". The "AA" grade panels are always preferable, however, "AB" grade is acceptable. All plywood should be a minimum of three plies. All fastenings should be bronze or hot dipped galvanized ferrous metal. Brass fastenings are not advised nor are the electroplated screws commonly sold in hardware stores. All screws are to be of the flat head type intended for wood. All nails are of the ring-type nail common to boat construction. Unless otherwise specified, all wood-to-wood joints are to be glued with a waterproof or highly water resistant glue such as plastic resin, resorcinol, epoxy, or other equivalent type used per the manufacturer's instructions regarding temperature, clamping requirements, curing time, and mixing method.
CHECK ALL SIZES TO THE WORK PRIOR TO CUTTING. Abbreviations used are: Mahog = mahogany; SP=Spruce; DF = Douglas-fir; PW=plywood; Ext=exterior; MAR=marine; LF=linear feet.

ITEM MATERIAL SIZE NO. PCS: 28' 32' 36' 40'
LUMBER:
Bulkhead & Transom framing Mahog or Oak 1-1/4" x 4"
1-1/4" x 3"
120 lin ft
12 lin ft
140 lin ft
12 lin ft
160 lin ft
12 lin ft
180 lin ft
12 lin ft
Spreader Cleats & Bulkhead "C" Mahog or Oak 1-1/4" x 3" 4 lin ft 4 lin ft 4 lin ft 4 lin ft
Inter. deck beam brackets Mahog or Oak 1-1/4" x 3" 35 lin ft 42 lin ft 49 lin ft 56 lin ft
Bulkhd Deck beams DF 2"x6"x12'
2"x6"x10'
--
6 rqd.
--
7 rqd.
8 rqd.
--
9 rqd
--
Int. deck beams Mahog or Oak 1-1/4"x5-1/2"*x12'
1-1/4"x5-1/2"x10'
--
5 rqd.
--
6 rqd.
7 rqd.
--
8 rqd.
--
Skegs DF 2" x 6" x 12'/2 rqd. 16'/2 rqd. 20'/2 rqd. 24'/2 rqd.
Chine logs Mahog or Oak 1-1/4" x 2" x 26'/4 rqd. 30'/4 rqd. 34'/4 rqd. 38'/4 rqd.
Keels Mahog or Oak 1-1/4" x 3" x 25'/2 rqd. 29'/2 rqd. 33'/2 rqd. 37'/2 rqd.
Seam battens Mahog or Oak 1-1/4" x 2" x 28'/2 rqd. 32'/2 rqd. 36'/2 rqd. 40'/2 rqd.
Side planking battens Mahog or Oak 1-1/4" x 2" x 28'/2 rqd. 32'/2 rqd. 36'/2 rqd. 40'/2 rqd.
Deck Clamps Mahog or Oak 1-1/4" x 2" x 24'/2 rqd. 28'/2 rqd. 32'/2 rqd. 36'/2 rqd.
Inner/outer sheer clamps Mahog or Oak 1-1/4" x 2" x 8' 4 rqd. All versions
Motor well clamps Mahog or Oak 1-1/4" x 2" x 8' 2 rqd. All versions
Motor well members Mahog or Oak
Mahog or Oak
1-1/4" x 2" x 20' - All versions (outboards only)
1" x 1-1/2" x 8' - All versions (outboards only)
Rub rails Mahog or Oak 1" x 3" x 21'/2 rqd. 25'/2 rqd. 29'/2 rqd. 33'/2 rqd.
Deck edge caps Mahog or Oak 1" x 8" x 11'/2 rqd. 11'/2 rqd. 13'/2 rqd. 13'/2 rqd.
Tunnel battens Mahog or Oak 1" x 2" x 20'/5 rqd. 24'/5 rqd. 28'/7 rqd. 32'/7 rqd.
Tunnel batten blkg Mahog or Oak 1" x 2" x 18 lin ft 18 lin ft 32 lin ft 32 lin ft
*Material to match net width of bulkhead deck beams. Douglas fir, 2" x 6" may be used alternately.
PLYWOOD:
Transom, stems, breasthooks DF Ext AB 3/4"x4'x8' - 2 sheets all versions
Bow decking, motor wells DF Ext AB 1/2"x4'x8' - 1 sheet all versions
Bulkheads DF Ext AB 3/8"x4'x8' 4 5 5 6
Tunnel planking DF Ext AB 1/4"x4'x8' 4 4 7 8
Decking DF Ext AC
DF Ext AC
3/4"x4'x10'*
3/4"x4'x12'*
5
--
6
--
--
7
--
8
Planking & butt blks DF MAR AA or Ext AB 3/8"x4'x16'*
3/8"x4'x14' *
3/8"x4'x12' *
3/8"x4'x10'*
2
6
--
--
4
--
4
2
--
2
10
--
--
10
2
--
* Can substitute 4' x 8' sheets, adjust quantities accordingly.


FASTENINGS:
Size 28' 32' 36' 40'
Screws: Flathead wood type, bronze or hot dipped galvanized
3/4" #8 5 gross 5 gross 6 gross 6 gross
1" #8 16 gross 19 gross 23 gross 26 gross
1-1/4" #8 2 gross 2 gross 2 gross 2 gross
1-1/2" #8 3 gross 4 gross 5 gross 5 gross
2" #10 8 gross 9 gross 10 gross 11 gross
3" #14 4 each 4 each 4 each 4 each
Nails: Ring type boat nails, bronze, stainless steel or Monel
1-1/4" 3 lbs 3 lbs 3 lbs 3 lbs
Carriage Bolts: Bronze or hot dipped galvanized complete with nuts and washers. Check all lengths to work
5/16" x 4" to 6" long
Glue: Epoxy 5 gallons

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