Concrete Masonry design:

Topics:

• Mechanical properties of concrete masonry

• Design of Unreinforced masonry walls

• Design of reinfoced masonry lintels

• Empirical design of concrete masonry (under construction)                     

• Reinforced masonry design (Allowable stress design) (under construction)

• Reinforced masonry design (strength design) (under construction)

Specified design procedure in ACI 530 -05:

• Allowable stress design (chapter 2)

• Strength design (Chapter 3)

• Prestressed masonry (Chapter 4)

• Empirical design (Chpater 5)

• Glass Unit Masonry (Chapter 7)

Load combinations:

Allowable stress design:

1. Use load combinations from building code.

2. When building code does not provide load combinations, use the following load combinations

• D

• D+L

• D+L+(W or E) (1/3 stress increase allowed)

• D+W (1/3 stress increase allowed)

• 0.9D+E  (1/3 stress increase allowed)

• D+L+(H or F)

• D+ (H or F)

• D+L+T

• D+T

where D is dead load, L is live load, W is wind load, E is seismic load, H is lateral earth pressure, F is hydraulic pressure, and T is pressure from temperature change, shrinkage, or creep.

Strength design:

1. Use load combinations from building code.

2. When building code does not provide load combinations, use load combinations from ASCE 7-02.