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Measuring Carpentry and Miscellaneous Items

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1 Measuring Carpentry and Miscellaneous Items
Chapter 7 Measuring Carpentry and Miscellaneous Items

2 Objectives Upon completion of this chapter, you will be able to:
Describe a system that will allow an estimator to accurately measure detailed carpentry work on a large project Calculate quantities of lumber and sheet materials

3 Objectives (cont’d.) Describe how to measure carpentry work in a takeoff Describe how carpentry work is classified in a takeoff Measure rough carpentry, finish carpentry, and miscellaneous items from drawings and specifications Complete a manual takeoff of carpentry work and miscellaneous items

4 Measuring Rough Carpentry
Detailed carpentry work quantity takeoff Requires comprehensive carpentry knowledge when estimating Standard practices and code requirements Framing methods and design requirements Estimating commercial and institutional buildings Different skills required

5 Board Measure Unit of measurement of lumber
Figure 7.1 Sample Board Measure Calculations (Delmar/Cengage Learning)

6 Metric Units Metric system: Lumber will be in millimeters
Sheathing does not change Described in mm rather than inches Takeoff process Items of lumber: measured in linear meters

7 Measuring Notes—Rough Carpentry
Generally: Lumber Measured in board measure or linear meters Measure lumber separately Dimensions, dressing, grade, and species Describe special treatment required Kiln dried, pressure treated, etc.

8 Measuring Notes—Rough Carpentry (cont’d.)
Wall boards Measured in square feet or square meters Do not deduct for openings Less than 40 square feet Classify wall boards Measure separately Framing work Lumber is classified and measured separately

9 Measuring Notes—Rough Carpentry (cont’d.)
Other considerations: Trusses, truss joists, and truss rafters Manufactured beams, joists, and rafters Sheathing Copings, cant strips, fascias Soffits Sidings

10 Measuring Notes—Rough Carpentry (cont’d.)
Vapor barriers and air barriers Underlay and subfloors Blocking and furring Rough hardware

11 Measuring Finish Carpentry and Millwork
Finish carpentry on commercial project Materials Supplied by a millwork subcontractor Installed by general contractor Architectural woodwork Supplied by millwork contractor as finish carpentry Supplied and installed by custom subcontractor

12 Measuring Finish Carpentry and Millwork (cont’d.)
Estimators should be familiar with: Trade scope definitions of finish carpentry Architectural woodwork in project location Evaluate supplied items Items outside scope of subtrades All are priced for installation costs and supply

13 Measuring Notes—Finish Carpentry
Generally: Classify and measure items separately Rough carpentry: grounds, rough bucks, etc. Include allowance for rough hardware Metalwork: measured under miscellaneous metals Glazing: include in glazing section Unless integral part of prefabricated cabinet work

14 Measuring Notes—Finish Carpentry (cont’d.)
Other considerations: Trim Shelving Stairs Cabinets, counters, and cupboards Paneling

15 Doors and Frames Usually obtained from subcontractors
Quote prices and deliver goods General contractors Estimate cost of handling and installing Different sections of specifications Deal with metal and wood doors, frames, assemblies, and special doors

16 Windows General contractors Small jobs Obtains prices from subtrades
No work for them to measure Small jobs May not be worthwhile hiring separate specialists Components may be obtained directly from suppliers

17 Miscellaneous Metals Miscellaneous metals trade
Prices received from specialized subcontractors Supply and installation “Supply only” General contractor Ability to prepare a realistic estimate Wide scope

18 Specialties Specialty trades Wide-ranging trade section
Subcontractors will offer different price quotes Example: bathroom accessories

19 Finish Hardware Supply cost Estimating costs
Cash allowance is often specified on larger projects Otherwise obtained from a subcontractor Estimating costs Calls for quantity takeoff of all finish hardware requirements

20 Measuring Exterior and Interior Finishes
General contractor’s estimator Does not usually measure finishing work for an estimate Almost invariably subcontracted these days Performed on some occasions

21 Examples Carpentry and miscellaneous work takeoff—house example
Takeoff notes shown as Figure 7.2a Rough Carpentry—Floor System Rough Carpentry—Wall System Rough Carpentry—Roof System Finish Carpentry

22 Examples (cont’d.) Exterior and interior finishes takeoff—house example Takeoff shown as Figures 7.3 and 7.4 Exterior finishes Interior finishes

23 Summary Thorough knowledge of carpentry construction
Required to prepare a detailed estimate Estimator must apply a systematic approach Carpentry requirements of commercial and institutional projects Usually well detailed

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