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Show INDIAN SCHOOL IN8TIT'LTTES. 433 . Q. Why do you connt 10 shingles to a square foot?-A. I t is the curlieuter's rule to do so. Shi~lglcs vary m width, hut they average 4 inchcas wide. They are laid 4 inches to the weather so one shingle covers about 16 square inches. There nre 144 square inrhes i n a square foot, and 1F is contained in 144 exactly 9 times, bgt 10 shingles are estimated to allnrr. for waste. Q. What kind of shingles do you use, Robert?-A. Cedar is about the only wood used for shingles here. Q. Why?-A. Recause the rain does not hurt them so much and they do not decay so quicldy. Q. How much do they project over the gable, Oscar?-A. They should project three-fourths of an inch. Q. How may we best get the projection?-A. By using a strip of wood three-fourths Inch wide, called the gage, n.hich can be taken off when the shingles are in place. Q. You may nail the gage in place. Fraukie, what should be the projection of the exyes?-A. They project from one to one and a half inches. Q. How would you make the projection elen?-A. Measure the first shingle at each end and nail them, then drive a nail in the end of each shingle and fasten a line to it and stretch it and let all shingles in tlle first course come to the line, and they will be eren. Q. Oscar will help you to locate the first shingles with one inch projections. Why have you put them on double, Oscar?-A. To prevent them from leaking where they join. Q. Shall we lay the whole roof double?-A. No. Only the first course, as the others lap enough to prevent leaking. Q. Frankie nud Oscar may lay the first course and Robert write on the board a brief story about shingling. How shall me find where to place the second course, Fmnkle?-A. They should he lald 4 inches to the weather. To get the distance use a straight-edge board 4 inches ride which saves measllrlng the courses, and lay the second course against it. Q. Oscar, do you know another way'!-A. Carpenters often use a chalk line. Q. Show how. Franlrie help.-A. Put a nail at each end 4 inches from the bottom of the first course. Stretch a chalk line and snap it. Lay the second course to the line made. (They turn the other side of the roof and show it completed.) Q. Robert may come and tell us about finishing the roof.-A. When the shin-gles are all on, the roof is finished by nvo boards called saddle hoards. One should be 1 by 3 inches and the other 1 by 4 inches so that they will he an equal distance on each side of the roof when in place. Q. Why not use a 1 by 4 and a 1 by 5? That would make them equal on eacll side.-A. Because the saddle boards should be the same width as the course of shingles. If lald 5 inches to the weather the saddle boards should be 5 inches wide. Q. After learning something here about shingling, you might go out and earn money in that way. At first you would probably get $1.50 per day. If you spent 75 cents for board, what per cent would you have left, Robert?-A. If I earned $1.50 and spent 75 cents, I would have left 75 cents, which is one-half of my money or 50 per cent. Q. If you began at $1.50 and in two months received $2 per day, what per cent is the increase in your wages?-A. If I began at $1.50 and was raised to $2, the increase would be 50 cents, which is one-third or 339 per ceot of my wages at first. Q. I am now receiving $3 per day grading lumber, which is 25 per cent more than I received when I pile lumber: how much did I receive at first?-A. Three dollars equal 1.25 per cent or five-fourtha of what I received when piling. One-fourth equals one-fifth of $3, which is 60 cents. Four-fourths equal four times 60 cents, which is $2.40, my wages piling lumber. Q. For seat work, learn ta Spell the words on the board and use the flrst set of words In statements, the second set in questions, and the third set in com-mands. (Words on the board:) Dimensions. Plate. Saddle board. Rafter. Gage. Straightedge. Comb. Projection. Course. 1 8 3 A 6 M-28 |