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Chapter 7 Measuring Carpentry and Miscellaneous Items.

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Presentation on theme: "Chapter 7 Measuring Carpentry and Miscellaneous Items."— Presentation transcript:

1 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 (contd.) –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 NotesRough 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 NotesRough Carpentry (contd.) –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 NotesRough Carpentry (contd.) Other considerations: –Trusses, truss joists, and truss rafters –Manufactured beams, joists, and rafters –Sheathing –Copings, cant strips, fascias –Soffits –Sidings

10 Measuring NotesRough Carpentry (contd.) –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 (contd.) 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 NotesFinish 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 NotesFinish Carpentry (contd.) 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 –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 –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 contractors 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 takeoffhouse example –Takeoff notes shown as Figure 7.2a Rough CarpentryFloor System Rough CarpentryWall System Rough CarpentryRoof System Finish Carpentry

22 Examples (contd.) 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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