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

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

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

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

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

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

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.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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