Masonry Design First Lecture - Purdue University · • Fire resistance and Durability of Masonry...

Instructor Julio A. Ramirez

Masonry Design

Topics

• History of Masonry (Photos courtesy of Prof. Richard Klingner)• Masonry Components• Bonding Patterns and Wall Types• Fire resistance and Durability of Masonry• Masonry Design Provisions• Classification of Masonry Elements According to

Structural Function• Design of Gravity Load Bearing Elements• Design of Reinforced Masonry

History of Masonry- Origins

Modern Masonry Design

Historical Building Method

· Originally unreinforced, compression element· H/T limited-natural restriction on height

before unstable· Empirical design (Remains in code)· Oldest manufactured building material

Origins

Evolution

More Recent Examples

History of Masonry

History of Architecture

History of Masonry

Masonry Units

A. Adobe�Unburned Clay Masonry�Restricted area use today�16” min thickness�Low seismic areas

Masonry UnitsC. Glass Masonry

�Non-structural, decorative�Must carry self lateral loads to surrounding

restraining structure

D. Stone Masonry�Natural stone�Multnomah Falls Lodge�Crater Lake Lodge�Min Thickness = 16 inches

Masonry Units

F.Hollow Unit Masonry�A masonry unit whose net cross sectional area in

every plane parallel to the bearing surface is less than 75 percent of the gross-sectional area in the same plane

�Concrete block�Hollow clay units

G. Solid Masonry�A masonry unit whose net cross sectional area in

every plane parallel to the bearing surface is 75 percent or more or the gross-sectional area in the same plane

Masonry Types

I. Grouted Masonry�2 wythes with interior space partially or completely

filled with grout�Grouted cells of units�Unreinforced�Reinforced

Masonry Types

J. Reinforced Hollow Unit Masonry�Some cells contain rebar�Cells with rebar contain grout�All cells may be grouted�Horizontal reinforcement may be in block bond

beams or in mortar joints or both

Masonry Types

K.Masonry Veneer�“Non-structural”�Must be vertically supported�Must be laterally stabilized

Masonry Units CE479

• Clay Brick

• Concrete Block

Example of use of modern Masonry (TGRW Structural Engineers, Chicago ILL

747 North LaSalleChicago, Illinois

Primary Structural System

Exterior Wall System

• Load Bearing CMU

• Composite Metal Deck / Framing

• CMU Shear Walls

• Architectural Split Face CMU andGlass Curtain Walls

Masonry Design First Lecture - Purdue University · • Fire resistance and Durability of Masonry...

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Transcript of Masonry Design First Lecture - Purdue University · • Fire resistance and Durability of Masonry...

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