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Chapter 6

Measuring Masonry Work

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Objectives Upon completion of this chapter, you

will be able to:

Explain how masonry work and associated

items are measured in a takeoff

Explain how masonry items are classified

in the takeoff process Measure masonry items from drawings and

specifications

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Objectives (contd.) Use conversion factors to calculate

quantities of bricks, blocks, and masonry

mortar

Complete a manual takeoff of masonry

work and associated items

Complete a computer takeoff of masonrywork using Excel spreadsheets

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Masonry Work Generally Includes construction with:

Clay bricks

Concrete bricks and blocks

Clay tiles

Natural and artificial stone

Typically performed by subcontractors

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Measuring Masonry Work Measure net in place

Calculating masonry units: Two-stage process

Area of masonry is measured

Standard factor is applied to determine number

of masonry units

A number of other units are measured

Detailed in drawings or described in

specifications

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Brick Masonry Bricks:

Made of different materials

Manufactured by different methods

Used in many ways

Influential factors:

Price of masonry

Measurement: sizes and pattern

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Concrete Blocks Variables to

consider:

Sizes

Thickness of joints

Bond beams

Measured as extra

over blockwork Figure 6.1Typical Concrete Block Sizes(Delmar/Cengage Learning)

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Figure 6.2 Nominal and Actual Block Thicknesses(Delmar/Cengage Learning)

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Conversion Factors The Building Estimators Reference

Book

States number of standard bricks per

square foot of wall for different:

Wall thicknesses

Joint thicknesses Various bonds

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Measuring NotesMasonry Generally:

Measure quantities net in place

Separately measure circular masonry work

Include scaffolding and hoisting

Measure separately by category

Measure and enumerate several additional

items (listed on page 144)

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Measuring NotesMasonry(contd.)

Some additional considerations:

Brick masonry Measure in units of bricks

Separately measure facing bricks

Concrete block masonry Enumerate units stating type and size of blocks

Separately enumerate special units

Measure in cubic yards or cubic meters

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Examples Masonry workhouse (brick facings

alternative)

Takeoff shown as Figure 6.3a

Masonry workoffice/warehouse

building

Takeoff shown as Figure 6.4

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Figure 6.3a

House Example

Masonry Work(Delmar/Cengage Learning)

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Figure 6.3b

Brick Facings

AlternativeDetails(Delmar/Cengage Learning)

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Figure 6.3c Brick FacingDetail at Foot of Facings (Delmar/Cengage Learning)

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Figure 6.4

Office/Warehouse

ExampleMasonry

Work (Delmar/CengageLearning)

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Figure 6.4

(Continued)

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Summary Masonry work

Includes construction with clay bricks and

tiles, concrete bricks and blocks, etc.

Typically performed by subcontractors

Several items are measured during takeoff

Quantities of masonry units are measurednet in place

Classified by types of units and use