McDrift 16' Bill of Materials

The following is an estimate of the aluminum required to build the McDRIFT 16' version. See the Guide for aluminum alloy recommendations. The square footage of aluminum sheet (the term sheet and plate have been used interchangeably in plans and instructions) will vary depending on the width of materials used. Our estimate includes an overage. The side and bottom templates given on the patterns and the details on Plansheet 2 of 3 are to a scale of 1" = 1'0". Make paper duplicates of the various members to be sawn from sheet stock and arrange on a scaled drawing of the width and length of stock available to determine how to obtain the parts with minimal wastage; or as noted previously, use full size plywood mock-ups. As an example, the side panels will require two 4' wide sheets, however, both sides can be obtained from a single 5' width. Will it be cheaper to order all wide stock from your vendor or both 4' and 5' widths? Lengths of extruded members allow for cutting to size from the work and should be grouped and standard aluminum lengths purchased rather than custom cut stock. Check all sizes to the work BEFORE ordering any material.

ITEM MATERIAL NO. PCS LENGTH
Sides, bottom & other sheet members (see transom options) 1/8" sheet 200 sq. ft. NA
Bottom longitudinals 1" x 2" x 1/8" chan. 1
2		 14'
11'
Center Cross frame 1" x 2" x 1/8" chan. 1 4' 6"
Fwd Cross frames 1" x 2" x 1/8" chan. 1 3' 6"
Aft Cross frames 1" x 2" x 1/8" chan. 1 3' 6"
Fore and aft seat cross member 1" x 2" x 1/8" chan. makes both 7'
Fore and aft seat centerline brace 1" x 1" x 1/8" angle makes both 4' 6"
Shelf longitudinal angle 1-1/4" x 1-1/4" x 1/8" angle makes both 13'
Chine angle 1" x 1" x 1/8" angle 2 15'
Sheer 1-1/4" Sched 80 alum pipe
OR optional
1/2" x 1-1/2" x 1/8" chan		 2
 
2		 18'
 
18'
Sheer across transom either of above 2'

The following can be used as a general guideline for selecting materials. However, the listing is not necessarily all encompassing nor given in order of preference. To figure hull cost, use weight of hull times cost per pound.

COMPONENTS & MATERIAL
Hull plating and decking 
 5052-H32 to H36
 5086-H32, H34, H112 or H116
 5456-H116
Framing 
 5052-H32 to H36
 5086-H32, H34, H112, or H116
 5050-H34 or H36
 5456-H116, 6061-T6
Extrusions 
 6061-T4 or T6, 5086
 5052, 6061-T6
Piping 
 6063-T6, 5456-H116

NOTES TO PRECEEDING:
When buying aluminum sheet or plate goods, the terminology "sheet" refers to material of .188" or less (nominally 3/16" or thinner), while the terminology "plate" refers to material .25" (1/4") or more.

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