ACI-318 / ACI-350 Beam Column Design
Description
This calculation evaluates concrete members carrying both flexure and axial load using thrust-moment, or P-M, interaction diagrams generated per ACI 318 and ACI 350. Standard axial/flexural provisions, Ch 10, are considered. ACI 350 durability factor is used to factor down the flexural and axial capacities instead of factoring up the factored loads. The end result is an "inner curve" that governs for ACI 350 capacity in the tension-controlled and transition zones.
UPDATE 2.1: Bug Fixes and point-by-point capacity checker added. Individual key points, checked using XLC, will be added in forthcoming version 2.2.
UPDATE 2.0: Significantly expanded range of acceptable column designs and enhanced usability - frequent PM Interaction diagram users will feel right at home. Individual key points, checked using XLC, will be added in forthcoming version 2.1.
UPDATE 1.1: Fixed plotting issue in cases with different clear covers between top and bottom face bars.
LIMITATIONS:
1) Only rectangular sections are supported
2) Ties are provided for confinement (not spirals)
Purpose:
This calculation evaluates concrete members carrying both flexure and axial load using thrust-moment,or P-M, interaction diagrams generated per ACI 318 and ACI 350. Standard axial/flexural provisions, Ch 10, are considered. ACI 350 durability factor is used to factor down the flexural and axial capacities instead
of factoring up the factored loads. The end result is an "inner curve" that governs for ACI 350 capacity in the tension-controlled and transition zones.
Assumptions/Limitations:
- Ties are provided for confinement (not spirals)
Validation:
-XLC formulae and peer review provide verification of intended functionality.
-Cross-check against software solution (SP Column)
References:
-ACI 318-11
-ACI 350-06
Calculation Reference
ACI 318
ACI 350
Reinforced Concrete Design
Calculation Preview
Full download access to any calculation is available to users with a paid or awarded subscription (XLC Pro).
Subscriptions are free to contributors to the site, alternatively they can be purchased.
Click here for information on subscriptions.
I will work on this and post and update. Thanks for the reminder.
Yes, the calculations preview is not available in this version of file, I do know the the calculations are there in HIDDEN columns, but for somebody to trust the usage of the sheet when we show it to them they will ask for the method using which the points are calculated hence that Key points preview is very important from presentation point of view could you mail me the 1st version of the file please.
I have downloaded the file but I do not see explanations as shown in the preview of this page (key points not there in the xls ) am i missing something ?