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SEAONC Webinar: ACI318-19 Updates – Two-Part Series
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SEAONC Webinar: ACI318-19 Updates – Two-Part Series

8/5/2020 to 8/12/2020
When: Wednedsay, August 5th & Wednesday, August 12th 2020
12:00 - 2:00 PM Pacific
Where: Online - link to be sent upon registration
United States
Contact: SEAONC Office

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ACI318-19 Updates – Two-Part Series

Wednesday, August 5th & Wednesday, August 12th from 12:00-2:00pm

Virtual on Zoom 


Come learn about updates that have been included in ACI318-19 on Structural Concrete and keep your building code knowledge current. The seminar will cover a code overview, shear updates, concrete anchorage, high strength rebar, and lateral system.


PART 1: AUGUST 5TH, 12:00 - 2:00 PM



Dr. Moehle will provide an overview of the main changes in ACI 318-19 and will address in detail the changes to the provisions for shear design and design using the strut-and-tie method. As Chair of ACI 318, Moehle was responsible to set overall directions and manage the code development process for this code cycle. He will provide a broad overview of all the main changes to ACI 318-19 to make sure that code users are aware of changes that may affect their design practice. He will then delve into the detailed new code provisions for one-way and two-way shear, including equations recognizing size effect and reinforcement ratio effect, hanger reinforcement, bi-directional shear, and other new shear provisions He will conclude with a review of the new concepts introduced in strut-and-tie modeling.



Mr. Silva will address important changes to the anchorage provisions in ACI 318-19, including the addition of provisions for shear lugs and screw anchors. In addition, he will discuss the general topic of how the 318 code distinguishes development length from anchorage.

Topics Include: 

• Chapter 17 reorganization

• Inspection provisions

• Screw anchor provisions

• Shear lug provisions

• Anchorage and development length


PART 2: AUGUST 12TH, 12:00 - 2:00 PM

high strength rebar updates: rahual sharma  honbach-lewin, inc.

Among the many changes in ACI 318-19, one sure to have a substantial impact is the allowance of higher-grade reinforcement in Seismic Applications. Up until the latest building code, the grade of reinforcement was limited to 60 ksi due to lack of research and testing on higher grades. However, recent research has broadened the understanding of the performance of high strength reinforcement and allowed less restriction in the building code. This talk will go through the research behind these changes and then delve into the changes in ACI 318-19 related to high strength reinforcement.



A host of code changes were approved for adoption in Chapter 18 – Earthquake Resistant Structures of ACI 318-19. The most significant changes focus on improving the performance of special structural walls subjected to  strong shaking, including: amplifying ASCE 7 wall shear demands, adjusting locations where longitudinal reinforcement may be terminated over the wall height, revising boundary element and web transverse reinforcement within the plastic hinge region to require overlapping hoops and web crossties, requiring a minimum area of boundary longitudinal reinforcement, placing restrictions on splices of boundary longitudinal reinforcement at the critical section, checking that the expected wall deformation capacity exceeds the expected wall drift demand, and introducing a definition of a new system, referred to as a Ductile Coupled Wall and proposing values for R, Cd, and Ω0 for adoption in ASCE 7. Other significant changes include allowing the use of high-strength reinforcement, with limitations, to resist flexural, axial, and shear demands in special seismic systems. Finally, requirements were relaxed for the roof-level column-to-beam strength ratio and for detailing of gravity columns. The presentation will provide a summary of these changes.



Registration for Both Days Registration for Just One Day

Member: $180 Member: $100 

Non-member $350 Non-member: $175

Student $50 Student: $25


SEAOC Members receive a discount on this series. Contact the SEAONC Office at for the discount code to apply during checkout!


*Registration is intended for both the individual and their company. Only the registering member will receive PDH credits. The registering member is responsible for sharing all information such as the zoom link and any handouts with their company.