Transcript CH-6 Masonry

Construction Cost Estimating
Class #7 - Masonry
Prof. Ralph V. Locurcio, PE
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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
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Many different types
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The components block
Block or brick
 Reinforcement
 Mortar
 Grout
 Imbeds
 Anchor bolts
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Bars run in horizontal
& vertical directions
Typical spacing 32” OC
Additional bars added
around openings
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Adds strength to CMU or Brick wall
U-shaped CMU block filled with cement
Rebars provide lateral strength
Forms a horizontal “beam”
32”
100 feet
4 feet
10 feet
4 feet
2 feet
= 8”
= 16”
1136 blocks
225 blocks
Bond
Lintel
Bullnoze
2”x 8”
Bracing
Structural Brick
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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:
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Brick
Weather Barrier
Lintels
Mortar
Ties
What is Mortar??
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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
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Masonry consists of:
Block
 Structural Brick
 Brick Veneer
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Work package for block and structural brick
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Block or brick
Reinforcement
Mortar
Grout
Imbeds
Anchor bolts
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The work package for Brick Veneer includes:
Brick
 Weather Barrier
 Lintels
 Mortar
 Ties
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1. Chapter 6…. handout
• Problems 6-7, 8, 9, 10
• Problem 6-13
2. Problems with HW #2
• Calculations missing/incomplete
• Difficult to understand
• Materials missing
• Incorrect costs
• Didn’t use estimating template
• Some gave too much credit