This section is from the book "Carpentry", by Ira Samuel Griffith. Also available from Amazon: Carpentry.
Estimating Labor Costs. In estimating labor costs the following data is to be made use of. The estimator will have to determine the hours per day and the scale of wages per hour paid in his locality, and make whatever changes in the data is necessary. He should also compare the quantity of work done by men he may observe with that given herewith. The time data herewith is based upon the work of one mechanic who has mastered his trade fairly well. With an efficient foreman and a selected group of workmen these time allowances can be reduced in many instances as much as one-half. Experience alone will determine the possibilities of such reductions with safety.
By One Man | |
HRS. PER 1000 B.M. FT. | |
Sills and plates6"x8" no gains or mortises.................. | 20 |
Sills and plates 6"X8", gains no mortises........................... | 40 |
Sills and plates 6" x 8" gains and mortises........... | 60 |
Joists and box sills............................. | 20 |
Studding 2"X4"................................................ | 32 |
Studding 2"X6"................................................ | 23 |
Rafters 2"X4", plain gable roof................................... | 40 |
Rafters 2" X 4", hip roof add 5% to 30% for each hip or valley. | |
Rafters2"X6", plain gable roof............................ | 27 |
Rafters 2"X6", hip roof add 5% to 30% for each hip or valley. | |
Sheathing, square edged, horizontal, walls................... | 16 |
Sheathing, square edged, diagonal, walls.................. | 19 |
Sheathing, 6" matched, walls................ | 24 |
Sheathing, 6" matches, walls diagonal................ | 32 |
Sheathing for floors, sub-floors, square edged.......... | 10 |
Sheathing for floors, sub-floors, square edged diagonal............... | 12 |
Roof Sheathing, plain gable roof........................... | 13 |
Roof Sheathing, hip roof................. | 20 |
* For a more complete treatise of labor costs, the student is referred to Gillette's Handbook of Cost Data, Section X, the source, in the main, of the basis of this data.
HRS. PER 1000 LIN. FT. | ||
Cornices .................................. | 400 | to 800 |
Water table, 3 member ........................... | 220 | |
Corner boards............................................. | 73 | |
Belt ............................................ | 195 | |
HRS. PER M. | ||
Shingling, plain roof, new work.................................... | 3 1/2 | |
Shingling, hips and valleys, add 5% for each hip or valley. Shingling, old work, add 20% for labor in removing old shingles. | ||
Shingling side walls, plain.................................... | ... 5 1/2 | |
Shingling side walls, fancy .......................................... | ... 8 | |
HRS. PER 1000 B.M. FT. | ||
Sliding, bevel, 6" ................................... | ... 35 | |
Siding, bevel, 4"................................... | 42 | |
Siding, shiplap............................................... | 27 | |
Siding, drop, when window and door casings and corner boards are placed over siding.................................................. | ||
20 | ||
Siding, drop, when jointed between casings and corner boards..... | .... 32 | |
Surfaced barn boards........................................ | ... 11 1/2 | |
Ceiling, store................................................ | ,... 53 | |
Wainscoting, cut, put up, finished with cap and 1/4 round, in a dwelling. .. | 46 | |
By One Man | |
HRS. PER 1000 B.M. FT. | |
Floors, pine..................................................... | 35 |
Floors, yellow pine, 3¼ " face, laid on sheathing, including paper between, smoothing rough joints, business block.......................... | |
40 | |
Floors, yellow pine, 3¼" face, laid direct on joist, no smoothing....... | 26 2/3 |
Floors, yellow pine, 3¼ " face, smoothed and sanded................. | 45 |
Floors, maple, 2¼" face, laid not smoothed................. | 40 |
Floors, maple, 2¼" face, laid and smoothed................ | 80 |
Floors, maple, 1½ " face, laid and well smoothed.................... | 107 |
Floors, oak, fine floor, glued, smoothed, scraped, sand papered .......... | 320 |
HRS. PER 1000 LIN. FT. | |
Briding ................. | 65 |
Placing plaster grounds...................... | 20 |
HRS. PER 100 LIN. FT. | |
Baseboard, three member, hardwood, average number miters........... | 10 |
Baseboard, two member, scribed to floor............................. | 16 |
Baseboard, plain, ¼, round at floor................................. | 8 |
Moulding, bed, flat, 3"........................................... | 2½ |
HRS. ON EACH | |
Window, to put together when K. D. (knock-down)................... | 1½ |
Window, making frame.......................................... | 3 |
Window, setting frame.................... | ¾ |
Window, setting frame in brickworks............. | 1 |
Window, fitting and hanging sash per pair.......................... | 1 |
Window, hanging blinds per pair, before frames are set............... | ¾ |
Window, hanging blinds per pair, after frames are set................ | 2 |
Window, casing inside........................................... | 2 |
Window, ordinary pine in frame building, including setting of frame. .. | 5 |
Window, same but hardwood..................................... | 6½ |
Window, ordinary pine in brick building, including setting of frame.... | 6½ |
Window, same but hardwood..................................... | 9 |
Window, attic and cellar............... | 1¾ |
Door, making frame ................. | 2½ |
Door, making frame with transom................................. | 3½ |
Door, common hardwood, set jambs, case, hang and finish, including transom..................................................... | 10 |
Door, common 1⅜ " pine complete................................. | 4½ |
Door, common 1¾ " pine complete................................ | 5½ |
Door, casing opening one side..................................... | ¾ |
Door, casing opening both sides. .. .*............................... | 1½ |
Door, fitting, hanging and trimming................ | 1½ |
Door, fitting, hanging and trimming outside door, pine............... | 2½ |
Door, fitting, hanging and trimming outside door, oak............... | 4 |
Sliding doors, pine, (framing not included) to finish complete with lining, jambs, casing and hardware, per pair........................... | 32 |
Sliding doors, same, but hardwarood......... | 48 |
Sliding doors for barn 12'Xl8'___................................ | 24 |
Transom, fixed.................................................. | 1 |
Transom, hung ................ | 1½ |
HRS. LABOR ON EACH | |
Box stair, cellar or attic..... | 25 |
One flight plain stair, 7-room house, hand rail, busters ....... | 40 |
One flight fine stair, 9-room house, handrail, paneled....... | 100 |
PORCHES IN GENERAL | |
Hours per lineal foot .... | ..... 5 |
Balustrade hours per 1000 lineal feet.... | ..... 500 |
Lattice for porches, hours per 1000 square feet | 16 to 200 |
LATH | |
Lath, hours per 1000 .... | 7 |
Paneling, pine, hours per 100 sq. ft................................ | 50 |
Paneling, hardwood, hours per 100 sq. ft........ | 83 |
Drawers, dovetailed, hours, each ......... | 2½ |
Drawers, 15"X18", including racks and fittings..................... | 2½ |
Shelves, in storeroom, dadoed into compartments 18" square, hours per 100 sq. ft................................................ | 62½ |
Shelves, pantry, no dado, hours per 100 sq. ft. shelf.................. | 37½ |
Closet hooks on strip of wood, 12" apart, hours per 100 lineal feet....... | 15 |
Sideboard, oak, 8'X8', hours...................................... | 100 |
 
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