Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 61
Book Description
Currently, regardless of the height of a reinforced masonry wall, engineers are required to consider moment magnification when using strength design provisions. An attempt at finding reasonable h/r limits for consideration of moment magnification is explored. Moment-curvature diagrams were developed using a spreadsheet to define the behavior of 8 inch and 12 inch concrete masonry walls. A series of models were created with axial load, out-of-plane load, height, reinforcing, and wall width as variables. The models were loaded out-of-plane in a finite element program until failure. The results were organized to produce the moment magnification of each wall. Results were summarized to determine height to radius of gyration (h/r) ratio limits for consideration of moment magnification. For walls with axial loads over 5% of the compressive strength times the cross sectional area, practical limits were not found. The limits corresponded to short walls that would not aid engineers in design. For those walls with axial load of 5% and less, walls with h/r ratios of 24 or less would not have to consider the effects of moment magnification, walls with h/r ratios between 24 and 40 would use a simplified method of increasing the static moment by 10%, and walls with h/r ratios over 40 would have to consider current moment magnification procedures.
Design Considerations for Reinforced Concrete Masonry Walls Regarding Moment Magnification
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 61
Book Description
Currently, regardless of the height of a reinforced masonry wall, engineers are required to consider moment magnification when using strength design provisions. An attempt at finding reasonable h/r limits for consideration of moment magnification is explored. Moment-curvature diagrams were developed using a spreadsheet to define the behavior of 8 inch and 12 inch concrete masonry walls. A series of models were created with axial load, out-of-plane load, height, reinforcing, and wall width as variables. The models were loaded out-of-plane in a finite element program until failure. The results were organized to produce the moment magnification of each wall. Results were summarized to determine height to radius of gyration (h/r) ratio limits for consideration of moment magnification. For walls with axial loads over 5% of the compressive strength times the cross sectional area, practical limits were not found. The limits corresponded to short walls that would not aid engineers in design. For those walls with axial load of 5% and less, walls with h/r ratios of 24 or less would not have to consider the effects of moment magnification, walls with h/r ratios between 24 and 40 would use a simplified method of increasing the static moment by 10%, and walls with h/r ratios over 40 would have to consider current moment magnification procedures.
Publisher:
ISBN:
Category :
Languages : en
Pages : 61
Book Description
Currently, regardless of the height of a reinforced masonry wall, engineers are required to consider moment magnification when using strength design provisions. An attempt at finding reasonable h/r limits for consideration of moment magnification is explored. Moment-curvature diagrams were developed using a spreadsheet to define the behavior of 8 inch and 12 inch concrete masonry walls. A series of models were created with axial load, out-of-plane load, height, reinforcing, and wall width as variables. The models were loaded out-of-plane in a finite element program until failure. The results were organized to produce the moment magnification of each wall. Results were summarized to determine height to radius of gyration (h/r) ratio limits for consideration of moment magnification. For walls with axial loads over 5% of the compressive strength times the cross sectional area, practical limits were not found. The limits corresponded to short walls that would not aid engineers in design. For those walls with axial load of 5% and less, walls with h/r ratios of 24 or less would not have to consider the effects of moment magnification, walls with h/r ratios between 24 and 40 would use a simplified method of increasing the static moment by 10%, and walls with h/r ratios over 40 would have to consider current moment magnification procedures.
Reinforced Masonry Design
Author: Robert R. Schneider
Publisher: Prentice Hall
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 712
Book Description
Publisher: Prentice Hall
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 712
Book Description
Analysis of Slender Masonry Walls with Moment Magnification Method
Author: Gurjot Singh Gill
Publisher:
ISBN:
Category : Reinforced masonry
Languages : en
Pages : 178
Book Description
Publisher:
ISBN:
Category : Reinforced masonry
Languages : en
Pages : 178
Book Description
Design and Construction of Plain and Reinforced Concrete Masonry Foundation Walls
Author: National Concrete Masonry Association
Publisher:
ISBN:
Category : Basements
Languages : en
Pages : 100
Book Description
Publisher:
ISBN:
Category : Basements
Languages : en
Pages : 100
Book Description
Fundamentals of Reinforced Masonry Design
Author: Ajit Virdee
Publisher: Professional Publications Incorporated
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 204
Book Description
Publisher: Professional Publications Incorporated
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 204
Book Description
Design of Masonry Walls and Reinforced Concrete Columns with Column-deflection-curves
Author: Bruno Thürlimann
Publisher:
ISBN:
Category : Columns, Concrete
Languages : en
Pages : 8
Book Description
Publisher:
ISBN:
Category : Columns, Concrete
Languages : en
Pages : 8
Book Description
The Masonry Society Journal
Design of Reinforced Concrete
Author: Jack C. McCormac
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 744
Book Description
Publisher Description
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 744
Book Description
Publisher Description
Behavior of Reinforced Concrete Masonry Walls Subjected to Combined Axial Loading and Out-of-plane Bending
Principles of Structural Design
Author: W.F. Chen
Publisher: CRC Press
ISBN: 1420037137
Category : Technology & Engineering
Languages : en
Pages : 528
Book Description
Many important advances in designing modern structures have occurred over the last several years. Structural engineers need an authoritative source of information that thoroughly and concisely covers the foundational principles of the field. Comprising chapters selected from the second edition of the best-selling Handbook of Structural Engineering,
Publisher: CRC Press
ISBN: 1420037137
Category : Technology & Engineering
Languages : en
Pages : 528
Book Description
Many important advances in designing modern structures have occurred over the last several years. Structural engineers need an authoritative source of information that thoroughly and concisely covers the foundational principles of the field. Comprising chapters selected from the second edition of the best-selling Handbook of Structural Engineering,