269. Work out the same problem for a third pitch house.

270. If the center of the common rafter of a quarter pitch roof is 9" away from the hip apex and 22" from the center of the first jack, how much shorter will the jack be than the common rafters?

271. If the common rafter of a third pitch house is 12' long, and is set 8" from the apex of the hip, what is the length of the first jack?

272. What will be the length of the longest jacks of an octagonal roof which is 18' wide between sides, with a rise of 12', if they are placed 2' 6" on centers at the plate? In this case, the middle rafter of each side of the roof is not considered a jack.

273. If 2" hips are used, how much shorter will the top ends of these rafters have- to be cut?

274. The material costs twice as much as the labor upon a certain house which is to be built upon a hilltop. On account of the location it costs 5 per cent more to get the material, and since the men come from the city to the building, the increase of the cost of labor is 4 per cent. If the cost of the house in an ordinary locality would have been $2100, what will be the cost of this house?

275. At $1.37 1/2 per minimum day's work, what will it cost to excavate and wheel 60 ft. the earth from a cellar 30' X 45', and 4' deep?

276. If a mason is paid $3 per day, and a helper $1.50, how much will it cost to build the rubble stone wall of a house, 25' X 32' X 16" thick, and 8' high?

277. How many bushels of sand and lime will be required in building the above wall?

278. How much will it cost for labor upon a brick wall, 40' long, 25.014' high, 16" thick, allowing 1/5 for openings? The bricklayer lays the average number of bricks, and receives $3 per day, and the helper $1.50.

279. How many bushels of sand and lime will be necessary to lay 24,330 bricks?

280. How many studs will be necessary for the outside walls of a rectangular building 25' X 40', 12 openings?

281. The joists of a floor 32' long X 18' wide are set 16" on centers, and the floor is strengthened by two rows of bridging, which costs 4 ct. per set. What is the cost of the bridging?

282. How much horizontal sheathing will it take to cover the walls of a hip roof building 27' 6" X 38' 3", and 16' high to the eaves? Make no allowance for openings.

283. If the house is boarded diagonally, how much will it take? Make no allowance for openings.

284. A floor 20' X 16' is to be laid of 4" matched boards. How many feet will it take?

285. What will be the amount if 3" boards are used?

286. How many square feet of 6" siding will be required to cover the walls of an octagonal auditorium 64.1' upon each side, and 20' high, with the usual number of windows?

287. How much 4" matched siding would be used for the above building?

288. If a cornice 26" wide is to be built upon this house, how much will it cost, estimating the size of the house as the length of the cornice?

Note. - Questions 289 to 300, inclusive, refer to labor only.

289. If it takes 6000 ft. of studding to build a house, how much will it cost to set it, if the minimum day's work is done with wages at $2.25 per day?

290. If it takes 3000 ft. of rafters to frame a house, how much will it cost with labor at $2.25 per day?

291. If it takes 3375 ft. of floor joists to frame the floors of a certain building, how much will the labor cost at $2.50 per day?

292. If it takes 14,500 ft. of sheathing to cover a house, how much will it cost if the men receive $1.75 per day?

293. If a house requires 6300 ft. of siding, how much will it cost if the men receive $2.25 per day?

294. If a house requires 30,220 shingles, how much will it cost to lay them?

295. How much will it cost to set 28 window frames, at $2.50 per day of 10 hours?

296. How much will it cost to put a ceiling wainscot around 6 rooms, aggregating 275' spread, and 3' 6" high, if the men receive $2.50 per day, and do a maximum day's work?

297. 62 inside doors are to be hung and trimmed. If the wages are $2.75 per day, and if mortise locks are used, how much will the job cost?

298. At $8 per square, how much will it cost to put a tin roof upon a building which is 20' X 36' with a projection of 12"?

299. What will it cost at $.22 per square yard to lath and plaster 6 rooms, 12' X 16', averaging 8' high?

300. If it takes 18 inch laths per square yard and labor costs $2 per day, what will the labor cost to lath a house containing 387 sq. yd.?

301. If the cost of building figures up to $2533, what will be the estimate after the hardware is added, allowing the minimum estimate?

302. If the hardware in a certain house cost $73.80, how much will it cost to put it on?

303. How many gallons of paint will be necessary to cover (2 coats) a building which has a surface of 9000 sq. ft.?

304. If the paint for a building costs $84, how much should the labor of putting it on cost? (See Section 69.)

305. How many gallons of paint are necessary to cover (2 coats) 4200 sq. ft., allowing 1/5 for large openings?

306. A job of papering requires 67 double rolls. What will the cost of laying it be?

307. If a job of paperhanging requires 93 double rolls of paper, at 8, per roll, and it costs $.12 1/2 per single roll to lay it, what will the job cost?