ACI 318 - 19 VS ACI 318 - 25
(PUBLIC COMMENTS): PART 1
Eng. Abubaker Merghani Alamleeh
bakrealmaleeh@gmail.com
+971 – 566548767, Dubai, UAE
ACI 318 -19 Vs ACI 318 – 25 (Public Comments)
ACI 318 -19 Vs ACI 318 – 25 (Public Comments)
Introduction:
This document outlines the new changes introduced in the ACI 318-25 – Public Comments “The
Code.” A comprehensive comparison is conducted between the two versions (apple-to-apple),
and the major technical changes will be shown and discussed in the following Parts. This report
aims to provide the reader with a concise summary and a quick overview of all the changes that
will be included in the next version of the code.
ACI 318 -19
ACI 318 – 25 (Public Comments)
CHAPTER -1: GENERAL
Added figure 1.4.9 emphasis that the code dose
not apply to FRP bars.
CHAPTER 2—NOTATION AND TERMINOLOGY
NOTATION
-
Notation that added/removed/modified are
shown here.
- - 46 new symbols have been added.
- - 7 symbols have been either modified or
removed.
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TERMINOLOGY
None
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CHAPTER 3 — REFERENCED STANDARDS
None / Removed
3 Referances and 4 Standards are added, 2
Standards are removed
CHAPTER 4—STRUCTURAL SYSTEM REQUIREMENTS
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ACI 318 -19 Vs ACI 318 – 25 (Public Comments)
Resilience is added to Sustainability –
Appendix N for constructions and concrete
mix.
Reference indication for precast concrete and
post-tensioned concrete
CHAPTER 5—LOADS
ASCE/SEI 37 is considered for loading
provisions for new/existing structure
design/evaluation
Use of the Code in different regions other than
USA.
For SDCs, only ASCE/SEI 7 is considered.
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ACI 318 -19 Vs ACI 318 – 25 (Public Comments)
Table R5.2.2 is removed
S multiplication factor is reduced from 0.5 to
0.3 (5.3.1b & 5.3.1d)
S multiplication factor is reduced from 1.6 to
1.0 (5.3.1c)
S multiplication factor is reduced from 0.2 to
0.15 (5.3.1e)
The reduction in snow loads is due to the
change from service to strength-level in
ASCE/SEI7.
Wind load 3000 yrs interval is added.
- Load combinations for tornado & tsunamis
shall be used as per ASCE/SEI 7.
- Alternative method for loads from water in
soil (e.g. uplift).
CHAPTER 6—STRUCTURAL ANALYSIS
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ACI 318 -19 Vs ACI 318 – 25 (Public Comments)
Fig R6.4.4 is added. Portion live load should be
applied to check the localized bending & shear
design controls.
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ACI 318 -19 Vs ACI 318 – 25 (Public Comments)
Two more options are added.
Specified for defelctions calcualtions, and not
applicable for two-way slab wothout beams
Removed
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ACI 318 -19 Vs ACI 318 – 25 (Public Comments)
CHAPTER 7—ONE-WAY SLABS
Two way punching shear check for concentrated load
on one-way slab.
Edited
Edited
Edited
CHAPTER 8—TWO-WAY SLABS
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ACI 318 -19 Vs ACI 318 – 25 (Public Comments)
Table 8.4.2.2.3 removed
Effective slab width, shear cap + 1.5 h or 1.5 h + drop
panel
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ACI 318 -19 Vs ACI 318 – 25 (Public Comments)
More illustration and clarifications on same
statement
Addition
Modification
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