Carpenter . proven very useful to me, and I pass tueuialong with the wish that they will beequally as useful to my brother members. (Refer to illustrations.) S=Span—A B. H=Height—E D. L = 4vS=+4H==—S 4\/12=+4X2^—12 3 .3 approximately 1210% length. Ans. Should you find that the span (A B), di-vided by the height (E D), is 4% or less, 44 TIbe Carpenter the above toniiula will not be perfectlyaccurate. It is thou necessary to find thelength of one-half the arc (as A D, figure2) and multiply by two. (Refer to Fig. 2.) R:=Kadins C A. 8=Span A D of half the arc, A D B. H=Height of segme
Carpenter . proven very useful to me, and I pass tueuialong with the wish that they will beequally as useful to my brother members. (Refer to illustrations.) S=Span—A B. H=Height—E D. L = 4vS=+4H==—S 4\/12=+4X2^—12 3 .3 approximately 1210% length. Ans. Should you find that the span (A B), di-vided by the height (E D), is 4% or less, 44 TIbe Carpenter the above toniiula will not be perfectlyaccurate. It is thou necessary to find thelength of one-half the arc (as A D, figure2) and multiply by two. (Refer to Fig. 2.) R:=Kadins C A. 8=Span A D of half the arc, A D B. H=Height of segment A D. L=Length of arc A D Shingling the Sides of a Building. (By John lI[iton.)In sonic sections it is becoming quitepopular to shingle the sides of the build-ings. There are several good reasons fordoing this. It is the cheapest method ofcovering a building, as it saves the expenseof high-priced lumber, which, with othercoverings, is needed for water table, cor-. R ^ :i: SH 12-+4X2-8X2 = lOO Radius. S=V2 VS=-f 4H==% V 12=+4 X2= A D. H^=R^—^^ yiGR^—S—4H=10—14 V 16 X10=—12^—4 X 2=^.5132; height of segment A D. L= 4VS=+4H=—S 4\+—; length of arc A or 1210%; length of are A D B. Ans.(5) To find the area of a segment whenthe length of arc (A D B), radius (C D)and height (E D) are known: A = — — Area of triangle, (ABCA) = ^^?^>^^^ _ 12X110-2)^ ^ ^^33 ^.^2 2 or 16 sq. ft. 48 sq. in. Ans. iier boards, and some for cornice. The cheapest grade of shingles will an-swer for this purpose, but it is better touse good ones. One thousand will cover from 135 to OTTstt Hr ^;<^l e^._
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Keywords: ., bookcentury1900, bookdecade1910, bookidcarpenter30u, bookyear1910
