Construction Cost Estimating Class #7 - Masonry Prof. Ralph V. Locurcio, PE

 About Masonry Construction  Masonry Walls  CMU Block  Reinforcing bars  Structural Brick  Brick Veneer  Mortar  Example

What is Masonry Construction? Bricks and CMU blocks Available in many sizes, grades, and textures Plans and Specs will determine size, color, etc. Specs will also determine the joint and type of mortar to use

 Many different types  The components block  Block or brick  Reinforcement  Mortar  Grout  Imbeds  Anchor bolts

 Bars run in horizontal & vertical directions  Typical spacing 32” OC  Additional bars added around openings

 Adds strength to CMU or Brick wall  U-shaped CMU block filled with cement  Rebars provide lateral strength  Forms a horizontal “beam”

100 feet 10 feet 4 feet 32” 2 feet

1136 blocks 225 blocks = 8” = 16”

Bond Lintel Bullnoze

2” x 8” Bracing

Structural Brick

 The brick veneer must bear on a footing, foundation, wall or steel ledger, and this is created by bolting a steel angle iron to the wall.  A typical steel lintel is 4”  Package includes:  Brick  Weather Barrier  Lintels  Mortar  Ties

What is Mortar??

Mixture of cement, sand & lime Binds the blocks/bricks together Seals against the elements Lime adds workability, elasticity, water retention Sand acts as a filler and aggregate Mortar is often colored

 Masonry consists of:  Block  Structural Brick  Brick Veneer  Work package for block and structural brick  Block or brick  Reinforcement  Mortar  Grout  Imbeds  Anchor bolts

 The work package for Brick Veneer includes:  Brick  Weather Barrier  Lintels  Mortar  Ties

1.Chapter 6…. handout Problems 6-7, 8, 9, 10 Problem Problems with HW #2 Calculations missing/incomplete Difficult to understand Materials missing Incorrect costs Didn’t use estimating template Some gave too much credit