Reshoring and Early-Age Building Behavior-Introduction to ACI 347.2R-17, Guide for Shoring-Reshoring of Concrete Multistory Buildings (Recorded Presentation)

Introduction to ACI 347.2R-17, Guide for Shoring-Reshoring of Concrete Multistory Buildings (Recorded Presentation)

Video Transcription

Video Summary

The video transcript discusses a session on reshoring and building behavior, presented by Bob McCracken, an expert with extensive experience in formwork and involved with ACI and Committee 347. McCracken introduces the revised guide to shoring and reshoring, published in 2017, which aims to simplify the reshoring process. The guide builds upon the foundational work of Grundy and Cabela, emphasizing the simplified method where assumptions about shore rigidity and slab stiffness are critical. McCracken reviews historical assumptions and covers advancements made over decades in understanding reshoring systems. The guide clarifies definitions of different types of shores and methods, focusing on ensuring that the slabs' weight is correctly supported and distributed. It includes guidelines for determining slab loads and strengths, particularly important under varying temperature conditions which influence concrete strength gain. McCracken highlights practical recommendations, like adding reshoring levels or increasing concrete strength to accommodate construction needs.

Keywords

reshoring

formwork

ACI Committee 347

concrete strength

shoring guide