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2 steel wire. It is 70 ft long & 12 ft high. The frame is made square to give attachment for the balloon ropes. Fig 2, is the floor, Fig 3 the top or roof. Weight [[2 column table]] 4 side pipes 70 ft @ 1.67 lbs per foot = | 280 ft 2 arches " [[ditto for pipes] 74.24 ft | 148.48 " [[ditto for ft]] 18 upright pipes 12 ft | 216. ft 9 floor pipes (cross) 10 ft | 90 7 roof pipes (") [[dittos for cross]] 10 ft | 70 [[sum line for 2nd column]] | 804.48 [[/2 column table]] at 1.67 per foot (Haswell 119) 1342.68 lbs. Allow [[underlined]] 2000 [[/underlined]] lbs [[underlined]] for frame ready [[/underlined]] for engines & furnishing. Envelope; See p3. There are 3968 sq yds of light canvass, estimated (by me) to weigh .5 lbs per sq yd. Weight of envelope 1984 lbs, allow [[underlined]] 2000 lbs [[line]] Netting; Envelope to be surrounded, except at ends by a netting with meshes 1 foot square using 57600 ft of 1/4 inch (diameter) rope of 4 strands (Haswell p 143) at .02 lbs per foot = 1152 lbs. Allow [[underlined]] 2000. [[/underlined]]
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