The Concrete Convention

and Exposition

New Business-What’s Next for ACI 301?

Presented by:Michelle L. Wilson, FACI

Director, Concrete Technology

ACI 301-16 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Quest for Perfection

ACI 301 Specifications for Structural Concrete

• ACI 301-xx

The Concrete Convention

and Exposition

Membership• Voting Members- 37

– Increased membership by 3 votes

– Returning voting- 22

– From subcommittee- 7

– From consulting- 1

– New members- 7

– Balance: P-14, U-18, GI-5

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Membership• Steering Committee

Michelle Wilson, Chair

Jason Bray, Secretary

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Membership• Steering Committee

Eric Koehler- Section 1, 301 A

General Requirements, Definitions, and Tolerances

Daniel Toon- Section 2, 301 B

Formwork and Formwork Accessories

John Turner- Section 3, 301 C

Reinforcement and Reinforcement Supports

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Membership• Steering Committee

Henry Prenger- Section 4, 301 D

Concrete Mixtures

Michael Hernandez-Section 5, 301 E

Handling, Placing, and Constructing

Anthony DeCarlo- Section 6, 301 F

Architectural Concrete

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Membership• Steering Committee

Kenneth Harmon-Section 7, 301 G

Lightweight Concrete

John Gajda-Section 8, 301 H

Mass Concrete

Theodore Neff- Section 9, 301 I

Post-tensioned Concrete

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Membership• Steering Committee

Scott Tarr-Section 10, 301 J and Section 11, 301K

Shrinkage Compensating Concrete

Industrial Floor Slabs

Anthony DeCarlo- Section 12, 301 L

Tilt-up Construction

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Membership• Steering Committee

Roger Becker-Section 13, 301 M and Section 14, 301N

Precast Structural Concrete

Precast Architectural Concrete

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Membership• Subcommittee Members- 38

– Returning subcommittee – 18

– New members-15

– From Main committee- 5

– Moved up to voting- 7

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Membership• Consulting Members- 4

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Meetings

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Meetings

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Committee Goals• Tackle New Business Items

• Editorial Formatting

• Chicago Style Politics

• 5 year cycle

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

New Business

• Topics generated from TAC and Public Comment

– TAC generated 610 total comments and 46 New Business Items

– Public generated 315 total comments and 81 New Business Items

– Total New Business Items: 127

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Title of Document

• Specifications for Structural Concrete

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Definition of Structural Concrete

• 301-16- plain or reinforced concrete in a member

required to transfer gravity loads, lateral loads, or both, to the ground.

• CT- plain or reinforced concrete in a member that is part of a structural system required to transfer gravity loads, lateral loads, or both, along a load path to the ground.

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Section 1- General Requirements, Definitions and Tolerances• Definitions:

– Architect/Engineer vs. Licensed Design Professional

– Acceptance

• 1.6.2.2. Initial Curing responsibility

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Section 2- Formwork and Formwork Accessories• Formwork removal criteria for

non-loadbearing formwork

• Void forms- ‘carton’ forms

• Joints- Do they belong in Section 2 or 5?

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Section 3- Reinforcement and Reinforcement Supports• WWF supports. Bar supports in critical areas

• New galvanized specification

• Heating bars for bending- A.W.S.

• Non-contact laps- permitted by 318 not specified in 301

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Section 4- Concrete Mixtures• Durability- low permeability

• ASR- coordinate with ASTM C1778

• Macrofibers

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Section 5- Handling, Placing, and Constructing• Joints

• Finishes- heavy-duty topping for 2-course slabs

• Temperature limits

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Section 6- Architectural Concrete• Mock Ups

• Acceptance

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Section 7- Lightweight Concrete• Internal Curing

• Remove- Not to use max w/cm for LW in Section 4.

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Section 8- Mass Concrete• Definition of Mass Concrete

• DEF

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Section 9- Post-Tensioned Concrete• Clarifying the finishing requirements

• Flame cutting

• Protection of anchorage

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Section 10- Shrinkage-Compensating Concrete• Expand scope

• SCC isolation joints- Section 5

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Section 11- Industrial Floor Slabs• Definition of Industrial Floors

• Redundant provisions

• Protection plan for curing period-non-air entrained floors

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Section 12- Tilt-up Construction• Surface finish

• Membranes

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Sections 13 and 14- Precast Structural Concrete and Precast Architectural Concrete

• Restructure sections

• Consider new certification programs

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Other New Business• ITG-4.1-07: Specification for High-Strength

Concrete in Moderate to High Seismic Applications

• Paving

• Shotcrete

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Cheers to the Next Cycle!

ACI 301 Specifications for Structural Concrete

The Concrete Convention

and Exposition

Thank you.