. Annual report of the New York State College of Agriculture at Cornell University and the Agricultural Experiment Station. New York State College of Agriculture; Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 230 Bulletin 274. Rafters Fig. 56 illustrates a method of marking out a rafter for the ordinary roof. Obtain the height of the peak A above the plate C, and the dis- tance between the plate C and a perpendicular dropped from the peak to point B on the plane with the plate. With these distances known the square can be so applied as to mark out the ra
. Annual report of the New York State College of Agriculture at Cornell University and the Agricultural Experiment Station. New York State College of Agriculture; Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). 230 Bulletin 274. Rafters Fig. 56 illustrates a method of marking out a rafter for the ordinary roof. Obtain the height of the peak A above the plate C, and the dis- tance between the plate C and a perpendicular dropped from the peak to point B on the plane with the plate. With these distances known the square can be so applied as to mark out the rafters where they should be cut to fit into place. For example, to lay out the rafter for a building 16 feet wide, take a rafter AC and let the rise or distance AB equal 8 feet and the run or. Fig. 57.—Uneven ground should be filled in to make the floors level. Hon roof requires Jieavy bracing. The combina- distance BC equal 16 feet. If an improvised square is used with a blade 16 ft. long and an arm 8 ft. long, it can be placed with one end at A and the other at C, and by sawing through the rafter on lines AB and BC, the rafter at C would fit on the plate and at A would meet a similar rafter from the other direction. The same result is obtained by placing the square on the rafter as indicated in the illustration, so that the rafter at C intercepts the blade of the square 16 inches from its heel, and the arm at C 8 inches from the heel. The square is again placed on tihe rafter so that the 16 inch mark covers at C and the 8 inch mark at C".. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original New York State College of Agriculture; Cornell University. Agricultural Experiment Station. [Ithaca, N. Y. ?]
Size: 1931px × 1294px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookidannualreportne1910newybookyear19111971albany
