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2013SumShotcreteEMag

• Shotcrete Equipment; Process in the following). Today, certification of • Preparation for Shotcreting; a shotcrete nozzleman through this ACI program • Shotcrete Nozzling and Application Techniques; provides nozzlemen with not only improved • Shotcrete Finishing and Curing Procedures; knowledge and skills but also with international and recognition as a craftsman. • Safety. Although no certification program can address ASA Education Sessions are conducted by all potential variables, the ACI Shotcrete Noz- ACI Examiners for Shotcrete Nozzlemen, who zleman Certification program is focused on spe- are approved and appointed by the ASA Board cific key elements of the shotcrete process such of Direction. This mandatory course for all new as knowledge, skill, and ability. The ACI Certifi- candidates seeking ACI Shotcrete Nozzleman cation Program requires a prerequisite of 500 hours Certification through ASA not only provides an of verified work experience as a nozzleman to excellent foundation to succeed on the written attend the certification session. portion of the certification exam but also an In addition, to achieve certification from the excellent resource for all those who need to ACI program, candidates must fulfill the fol- work with shotcrete in any capacity. The ASA lowing requirements4: Education Sessions have been offered in recent • Achieve a passing grade in the 90-minute writ- years at major trade shows such as World of ten examination per process; and Concrete and the Pool | Spa | Patio Expo. Par- • Successfully complete the following two-part ticipation in these sessions fulfills the ASA performance evaluation: education requirement while providing valuable • Part I—Demonstrate knowledge of all the information to help you become a better noz- items covered in the performance checklist; zleman. Please see ASA’s calendar for this year’s and courses: http://shotcrete.org/pages/news-events/ • Part II—Shoot a test panel with the calendar.htm. method(s) and position(s) to be certified. Apart from ASA, there are currently only a The test panels are cored in five predeter- handful of ACI-approved LSGs that offer ACI mined locations (through embedded rein- Shotcrete Nozzleman Certification. Information forcing bars); these cores are evaluated as on these LSGs is available on the ACI website. specified in the policies. The ACI Shotcrete Nozzleman Certification Note: Without the mandatory shotcrete education program has been operating successfully for the session ASA provides when they conduct ACI last 12 years. The program continues to gain Shotcrete Nozzleman Certification, many noz- recognition among federal, state, provincial, zlemen would find these requirements difficult and private specifying authorities throughout to achieve. North America. Adding to the popularity of The certification program is available for both specifying ACI nozzleman certification on the dry- and wet-mix shotcrete processes and two shotcrete projects is the fact that there are now shooting positions: vertical and overhead. All over 1300 ACI-certified shotcrete nozzlemen nozzlemen must qualify in the vertical shooting in North America. orientation and may elect to qualify in the over- head shooting orientation in either the dry- or ACI’s Shotcrete Nozzleman wet-mix shotcrete process, or both. The ACI Shotcrete Nozzleman Certification is valid for a Certification Program period of 5 years from the date of completion of For decades, the shotcrete industry has recog- all certification requirements. nized the need for more stringent standards when Considering the difficulty in some areas for a it comes to shotcrete quality. In addition to good- nozzleman to acquire the 500-hour minimum quality, well-proportioned shotcrete mixtures, experience prior to attending the certification suitable well-maintained equipment, and an session, ACI Committee C660 has been actively experienced shotcrete construction team, a working on the concept of a “nozzleman-in- qualified shotcrete nozzleman is a key element training.” A nozzleman-in-training would be to successful shotcrete placement. ACI Com- allowed to gain experience hours while working mittee C660 has delivered a credible and thor- under the direct supervision of an ACI-certified ough program with strict policies, guidelines, and nozzleman at the job site. The formal procedures procedures that respond to the demands of the for acquiring a nozzleman-in-training level certi- construction industry. fication are still under development by ACI Com- A select group of experienced and acknowl- mittee C660; visit the ACI website for the most edged shotcrete experts has been approved by ACI up-to-date policies in the upcoming months to act as Examiners for the certification program (www.concrete.org/certification/cert_Program (refer to Examiner Requirements and Approval Policies.htm). Shotcrete • Summer 2013 13


2013SumShotcreteEMag
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