Chapter 5 Measuring Carpentry Work
Board Measure • Most lumber is dressed; this means that surfaces are sanded, which reduces the size of cross section. • Lumber is still referred to by its nominal size. – For example, a 2 x 4 has a true size of 1½” by 3½”. • Unit of measurement of lumber is board measure (BM) or board foot (BF)/ – 1000 -board feet is written: MBF • Board measure is a cubic measure where one unit of BM is equivalent to a 1 x 12 board 1 -foot long.
Board Measure Calculations
Measuring Notes – Rough Carpentry • Lumber may be measured by piece, by length in linear feet, or in board measure. • Lumber generally is measured separately on the basis of the following categories: – – Dimensions: 2 x 4; 2 x 6; 2 x 8; etc Dressing: “rough sawn” or S 4 S Grade Species: Douglas fir, larch, etc.
Measuring Notes – Wallboards • Wallboards are measured in square feet. • No deductions are made for openings less than 40 -square feet. • Wallboards are classified and measured separately in the following categories: – Type of material – Thickness
Measuring Notes – Framing Work (1 of 2) • Lumber for framing is classified and measured separately in the following categories: – Plates – Studs – Etc. • Prefabricated trusses, truss joists, and truss rafters are enumerated and fully described. • Manufactured beams, joists, and rafters are measured in linear feet. • Sheathing boards are measured in square feet.
Measuring Notes – Framing Work (2 of 2) • Common boards, shiplap, tongued and grooved, plywood, and other types of sheathing are measured separately in square feet. • Copings and fascias are measured in linear feet. • Soffits are measured in square feet. • Sidings are measured in square feet. • Vapor barriers and air barriers are measured in square feet. • Underlay and sub floors are measured in square feet. • Blocking and furring are measured in board measure.
Measuring Notes – Finish Carpentry and Millwork (1 of 2) • Items generally are classified and measured separately according to materials, size, and method of installation. • Trim is measured in linear feet stating size. • Baseboard and carpet strip are measured through door openings. • Shelving is measured in linear feet stating width.
Measuring Notes – Finish Carpentry and Millwork (2 of 2) • Prefabricated stairs are enumerated and fully described. • Balusters and handrails are measured in linear feet. • Cabinets, countertops, and cupboards are enumerated. – Alternatively, units may be measured in linear feet. • Paneling is measured in square feet and fully described.
Measuring Notes – Doors and Windows • Doors and doorframes are enumerated stating their size and type of material. • Windows are enumerated and fully described including the rough opening sizes of the units. • Items of finish hardware enumerated including: – – Hinges Bolts Latch sets Etc.
Measuring Notes – Bathroom Accessories • Bathroom accessories are enumerated and fully described: – – Shower curtain rods Soap dispenser units Grab bars, towel bars Mirrors – – – Napkin dispensers Toilet roll holders Towel dispensers Waste receptacles Medicine cabinets Coat hooks
Takeoff Exercise • Takeoff the carpentry work for the house example shown on Figure 3. 5 drawings – See figures 5. 4 A, 5. 4 B, 5. 4 C, 5. 4 D, 5. 4 E, 5. 4 F, 5. 4 G, 5. 4 H, 5. 4 I, and 5. 4 J
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