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GeneralIn Memoriam: Peter C. Tatnall

In Memoriam

Pete Tatnall was born in Worcester, MA. He received a degree in civil engineering from Rensselaer Polytechnic Institute (RPI) in 1962;

GeneralProper Selection of Equipment and Nozzle for ACI Shotcrete Nozzleman Certification

Raymond C. Schallom III and Marc Jolin

Since the beginning of the ACI Shotcrete Nozzleman Certification program in 2001, a number of Examiners have encountered owners or nozzlemen requesting use of equipment and nozzle setups meant for low-volume/lowvelocity application

GeneralShotcrete Contractor Qualification

Marcus H. von der Hofen

It?s been over a decade since the inception of the ACI Shotcrete Nozzleman certification programs, which many individuals within the American Shotcrete Association (ASA) and the American Concrete Institute (ACI) worked extremely hard to create

SafetyGeneralACI Certification Policies for Shotcrete Nozzlemen

Nozzleman Knowledge

The statements contained herein are a consolidation of approved policies and procedures.

SafetyGeneralStatic Electricity

Ted W. Sofis

Those of us who have been involved in the installation of dry-process shotcrete have at some point experienced problems with static electricity.

GeneralShotcrete: Old Specifications and Misconceptions

Ted W. Sofis

One of the greatest advantages of using shotcrete is that shotcrete can be placed on vertical and overhead surfaces without the need for forming.

GeneralAir Content in Shotcrete: As-Shot Versus As-Batched

Lihe (John) Zhang

Air-entraining admixtures are added to shotcrete primarily for durability considerations.

GeneralHow Important Is Shooting Sequence?

Dan Millette

When someone does something a certain way long enough, it often becomes the way it is done?whether proper or not.

SafetyGeneralFalse Security

Trevor Bray and Oscar Duckworth

This article is a true account of an accident that resulted in an injury to a worker.

SafetyGeneralAvoiding Heat-Related Illnesses

Paul F. Ampey