CHRISTCHURCH - Concrete NZ Learned Society - Reinforced Concrete Diaphragm Design

WHY YOU & YOUR EMPLOYEES SHOULD ATTEND THIS SEMINAR

The Examples of Concrete Structural Design to NZS 3101 (known as the Concrete NZ Red Book) provide worked examples demonstrating how compliance with the New Zealand concrete design Standard, NZS 3101, can be achieved. The Red Book contains a comprehensive set of model calculations covering common concrete elements and structure types.

Section B4 of the Red Book covers the design of a reinforced concrete diaphragm, primarily for structural wall buildings, with details also provided for concrete frame buildings. The calculations are presented in considerable detail, with an emphasis on illustrating the process in a way that can be applied to structures more (or less) complex than the example chosen.

This seminar presents the worked example of Section B4, demonstrating the design of a reinforced concrete diaphragm in a medium rise building. Major steps in the design process will be thoroughly explained, demonstrating compliance with NZS 3101:2006 Concrete Structure Standard and NZS 1170.5:2004 Structural Design Actions - Part 5: Earthquake Design Actions - New Zealand. The application of key requirements of NZS 1170.5 for determining diaphragm forces will be discussed, including the pESA methodology and the derivation of PGA and overstrength factors.

The seminar will cover analysing the building model to determine seismic actions, modelling the diaphragm under these actions to establish design forces, and demonstrating the reinforcement layout and detailing requirements for accommodating tension load paths, anchorage of tension ties into the lateral load resisting elements, and detailing connections within the floorplate.

THIS SEMINAR WILL COVER

What a diaphragm is and its role in structural response

Forces in diaphragms - inertia and transfer forces

Code requirements and key references from NZS 1170.5:2004 for diaphragm forces

The pESA methodology – PGA and overstrength derivation

Building model analysis to determine diaphragm actions and transfer forces

Diaphragm modelling approaches:

• Hand strut and tie calculations and sketches
• Grillage models in analysis software
• Verification of load paths and force distributions

Reinforcement design and detailing:

• Tension load paths and chord reinforcement
• Collector (drag) elements and tension ties
• Anchorage and development into boundary elements

OTHER BENEFITS

• Comprehensive resources provided through the seminar notes.
• Knowledgeable and experienced speakers.
• The opportunity to network with industry peers.

WHO SHOULD ATTEND

Structural Engineers, Graduate Engineers, Designers, Specifiers and Students. 

Building Certifiers, Building Officials and Contractors may find the seminar interesting.

SEMINAR FEES INCLUDE

• Morning & afternoon tea + lunch
• Comprehensive seminar notes, including design example

DATES & VENUES

• Hamilton, FMG Stadium - Tuesday 2 June
• North Shore, North Harbour Stadium - Thursday 4 June
• Auckland, Waipuna Hotel & Conference Centre - Tuesday 9 June
• Wellington, Naumi Hotel - Thursday 11 June
• Christchurch, Novotel Christchurch Airport - Tuesday 16 June

• Copthorne Hotel & Resort Queenstown Lakefront - Thursday 18 June

PRESENTERS

• Alistair Russell - Holmes
• Des Bull - Holmes

REGISTRATION FEE

* The Learned Society offers group discounts for Members and Non-Members on a single booking:

          10% off 2^nd attendee | 15% off 3^rd attendee | 20% off 4^th attendee | 25% off 5^th attendee.

However, these group discounts are only available per venue using this Ticket Tailor portal.

To take advantage of group discounts across multiple venues, contact Concrete NZ - 044998820 or email admin@concretenz.org.nz

• Concrete NZ member: $550 (GST exclusive) per person + transaction fee
• Non member: $650 (GST exclusive) per person (includes complimentary Learned Society membership until 30 June 2027) + transaction fee
• Student: $120 (GST exclusive) per person (includes complimentary Learned Society membership until graduation) + transaction fee