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ARCH5023/ARCH4333 - ARCHITECTURAL STRUCTURES I

][ STEEL STRUCTURES ][
THE UNIVERSITY OF OKLAHOMA - COLLEGE OF ARCHITECTURE
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COMMERCIAL STEEL FRAMING

METAL BUILDINGS

GRAPHIC VERSION

Historical Background:

1908
        grain bins
        garages
        small industrial buildings

1930
        excess capacity of sheet steel
        American Iron and Steel Institute
        sponsors research

1940
        Quonset Hut 
        Naval Base at Quonset Point Rhode Island

1946 
        first design specifications for cold-formed steel
        Dr. George Winter, Cornell University

Post-War
        galvanized sheet metal
        4/12 pitch

1956
        Metal Building Association formed

1960
        pre-painted panels
        structural analysis computer programs

1968
        Metal Building Dealers Association

1983
        MBDA changed to
        Systems Builder Association



Markets:

Commercial                      42%

Manufacturing                   34%

Community Facilities             9%

Miscellaneous                   15%




Structural Systems:

1. Single Span rigid frame
        usually tapered
        120'            200' max.

2. Tapered beam with type II connections
        at the columns

3. Continuous beam frame
        post and beam

4. Single Span and continuous trusses

5. Lean-to



Clear Span:

1. Solid Web Clear Span Tapered Column (SR)

        width                   30' - 300'

        height                  10' - 90'


2. Open Web Clear Span Straight Column (ST)

        width                   30' - 120'

        height                  10' - 80'


3. Solid Web Clear Span Straight Column (ST)

        width                   16' - 120'

        height                    8' -   80'


4. Solid Web Clear Span Straight Column

        Single Slope (SSB)

        width                   15' - 120'

        height                    8' -   80'


     

Wall Systems:

1. Field Assembled System

2. Factory Assembled Panels

3. Exposed Fastener Systems

4. Concealed Fastener Systems




Roof Systems:

1. Z

2. C

3. open web joists




Design Loads:

1. D    = Dead Load - construction material

2. RL   = Roof Live Load

3. RS   = Roof Snow Load

4. S    = Seismic Load

5. W    = Wind Load

6. A    = Auxiliary Loads - cranes



Load Combinations:
1. D + RL

2. D + RS

3. D + A

4. D + W (or S)

5. D + RS x RS + A

6. D + RS x RS x RS + S

7. D + 0.5W (or S) + A

8. D + RS + 0.5W

9. D + 0.5RS + W

Parts of a Engineered Building System
==============================
1. Design
2. Engineering
3. Manufacturing
4. Construction

COMMERCIAL STEEL FRAMING

American Iron and Steel Institute

AFAB

Kelly

Phoenix Construction Company

Star Building Systems

Vanport Steel

Varco-Pruden Buildings

Momb Steel Buildings

Future Steel

LECTURES

To Home Page

Timetable

Prof. Dr. Hermann Gruenwald

(mail comments to: HGRUENWALD@ou.edu)

College of Architecture

The University of Oklahoma

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