CoatingsPro Magazine

MAY 2017

CoatingsPro offers an in-depth look at coatings based on case studies, successful business operation, new products, industry news, and the safe and profitable use of coatings and equipment.

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Page 35 of 84

NEW COATINGSPRO MAY 2017 35 interior cables, cables with spreader bars vs. cables without spreader bars, etc.), monitoring them regularly during all work and loading cycles, getting a feel for what is tensioned too much or too little, and, if need be, re-adjusting tensions as forces become excessive. • Understand the critical pieces and parts of the cable system, and take care in inspecting all rigging, tensioning, and installa- tion practices, particularly when using tie-off plates with embedded anchors. When at all possible, install tie-off plates on the top of piers and abutments to eliminate direct tension to the anchors. • Understand the impact that the variables' load, span, and deflection have on the cables, so that when you are challenged with an unexpected or unusual site condition, you can make modifications safely on site. • Check with your engineer of record when in doubt. Having an informed, working knowledge of how cable forces are affected by small changes in deflection, span, and loading is an important and beneficial tool when working with an engineer in designing a containment platform. It is, more often than not, the bridge diaphragm locations that dictate the hanger spacing and contractor supplies and preferences that govern the diameter and spacing of the cables. Together, these determine the minimum deflection required of the cable to keep it within code and safe operation. If calculated def lections using specific parameters are unacceptable for work efforts, proper adjustments can often be made to the system to y ield a more desirable result w ithout overloading the system. In the end, though, the numbers are what they are, and it is up to the contractor's understanding of the behavior of cables and dedication to work as best he or she can w ithin the design parameters to assure code compliance and ma ximum safety. CP Patti L. Seitz has a bachelor's deg ree in A rchitect ura l Eng ineer ing f rom t he Pennsylvania State Universit y specia l i zing in St r uct ures. She hold s professiona l eng ineer ing l icenses in Mar yland , Pennsylvania , New York , Virg inia , Ohio, and Flor id a , which, a long w it h Prov idence Eng ineer ing's l icensing in 4 8 states, prov ides Seitz and t he rest of her team g reat abi l it y to reach out and prov ide eng ineer ing ser v ices across t he count r y. For more infor mat ion, contact: Prov idence Eng ineer ing , (717) 509-7000, w w Safety Watch VAC-MOP Innovative & Patented VACUUM ACCESSORY CALL 407-298-7050 DYNAMIC DIAMOND TOOLING SEARCH: DDT VAC MOP • Save Time follow contour of floor • VAC-MOP designed to • Increase Profit • Helps Meet Dust Safety Regulations • 36" Vacuum Width • All Steel Construction • Installs and removes on vacuum in seconds with NO TOOLS The VAC-MOP can be fitted on the Ermator S26, Husqvarna S-26 and SASE BULL 240C NEW PATENT PENDING Wr i te in Re ad e r In q u ir y #387

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