Tornado 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, unless specified as NET. 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 oak (white oak), spruce (Sitka), 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.

ITEM MATERIAL NO.
PCS.
SIZE
LUMBER:
Frames Mahog, Oak or SP 50 bd. ft four quarter random, random stock
Motor stringers Mahog, DF or SP 2 1-1/4" x 6" x 13'
Motor stringers, blocking Mahog, DF or Oak 1 2" x 2" x 7'
Keel Mahog, Oak or SP 1 1-1/4" x 4" x 14'
Chine log Mahog, Oak or SP 2 1" net x 2" x 19'
Sheer clamp Mahog, Oak or SP 4 5/8" net x 1-1/4" x 20'
Sheer clamp lams #5 to
6 & 6 to breasthook
Mahog, Oak or SP 1 5/8" net x 1-1/4" x 12'
Battens, bottom Mahog, Oak or SP 2
2
2
1" x 2-1/2" x 12'
1" x 2-1/2" x 13'
1" x 2-1/2" x 17'
Side decking batten Mahog, Oak or SP 2 1" x 1" x 12'
Deck battens Mahog, Oak or SP 2 1" x 2" x 8'
Strongback Mahog, Oak or SP 1 1" x 2" x 9'
Aft strongback Mahog, Oak or SP 1 1" x 4" x 2'
Carling Mahog, Oak or SP 2 1" x 4" x 13'
Coaming Mahog 2 1" x 6" x 13'
Coaming, doubler Mahog 2 1" x 2" x 13'
Deck blocking Mahog, Oak or SP 1 1" x 1" x 10 lin ft.
Dash beam Mahog 1 1" x 6" x 6'
Deck beam @4 Mahog, Oak or SP 1 1" x 4" x 6'
Mid deck beams Mahog, Oak or SP 2 1" x 4" x 6'
Aft deck beams Mahog, Oak or SP 1 1" x 4" x 4'
PLYWOOD:
Gussets DF Ext AB 1 1/4" x 3' x 6'
Transom, stringer
& keel lams
DF Ext AB 1 3/8" x 4' x 6'
Stem, breasthook
& floor timbers
DF Ext AB 1 3/4" x 3' x 6'
Side planking DF MAR AB 1
1
3/8" x 4' x 8'
3/8" x 4' x 12'
Bottom planking DF MAR AB 2
2
2
1/2" x 3' x 8'*
1/4" x 3' x 12'
1/4" x 4' x 12'**
Forward decking DF Ext or MAR 2 1/4" x 4' x 10'
*Use end for butt block material.
**Use scrap for side deck.
Plywood Note: 4' x 8' sheets can be substituted for longer lengths in all cases. Adjust quantities accordingly.
FASTENINGS:
  • Screws: Flathead wood type, bronze or hot dipped galvanized
  • 1" #8 - 3 gross
  • 1-1/4" #8 - 4 gross
  • 1-1/2" #8 - 2 gross
  • 2" #10 - 1 gross
  • Nails: Ring type boat nails, bronze or Monel
  • 1" - 4 pounds
  • 1-1/4" - 1/2 pound
  • Carriage Bolts: Bronze or hot dipped galvanized complete with nuts and washers. Check lengths to work.
  • 5/16" x 5" - 2 required (Keel to stem)
  • 1/4" x 3" - 20 required (Blocking to frames)
  • 1/4" x 3" - 20 required (Blocking to stringers)
  • 1/4" x 3" - 4 required (Stringers to uprights)
  • 1/4" x 2" - 4 required (Side frames to deck beams)

Glue: Epoxy - 1 1/2 gallons



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