{"id":682,"date":"2010-11-05T13:07:45","date_gmt":"2010-11-05T21:07:45","guid":{"rendered":"http:\/\/www.dcddesign.com\/blog\/?p=682"},"modified":"2010-11-05T13:07:45","modified_gmt":"2010-11-05T21:07:45","slug":"wire-mesh-grips-and-catalog-strength","status":"publish","type":"post","link":"https:\/\/www.dcddesign.com\/blog\/wire-mesh-grips-and-catalog-strength\/","title":{"rendered":"Wire Mesh Grips and Catalog Strength"},"content":{"rendered":"

Wire mesh pulling grips, chinese fingers, pulling socks, stockings, support grips – whatever you call them, pulling grips<\/a> are one of those tools that everybody uses for utility installations. Overhead, underground, through ducts and over sheaves, grips are a flexible, low-profile option.
\n Their greatest drawback is the limited strength and durability of the individual wire strands. Like any wire rope, abrasion and fatigue will eventually lead to a loss of strength and a broken grip. And, talking with one customer this week, “breaking strength” can depend on whose catalog you’re looking at.
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\n Picture a typical bell curve. Starts small, gets big at the halfway point, gets small again. Most catalogs (DCD Design included) reference an Average or Approximate Breaking Strength. That’s halfway; by definition, half the grips are stronger than Average and half are weaker.
\n This weaker half is one reason we apply 3-5x safety factors to find the Safe Working Load. So a grip with an Approximate Breaking Strength of 12,000lb, should be limited to a Safe Working Load of 3,000-4,000lb when it’s new<\/strong>. As a grip becomes worn, the SWL should be further restricted.
\n\"grip_strength_range\"
\n Some catalogs refer to a Minimum Breaking Strength, down at the bottom end of the curve. Now 95-99% of the grips break above the quoted Minimum strength. This has one advantage: you can fine-tune your safety factors to include that certainty, though you’re starting from a lower Breaking Load. Really, you may find the SWL hasn’t changed much.
\n In the end, the quality of the grip will be the greatest apparent difference. DCD Design’s Pulling<\/a> and Support<\/a> grips are hand-made by experienced craftsmen, so you can be certain of quality and consistency.<\/p>\n","protected":false},"excerpt":{"rendered":"

Wire mesh pulling grips, chinese fingers, pulling socks, stockings, support grips – whatever you call them, pulling grips are one of those tools that everybody uses for utility installations. Overhead, […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[41,2],"tags":[176,228,229,230,231,232,158,233,125,234,235,236],"class_list":["post-682","post","type-post","status-publish","format-standard","hentry","category-how-to","category-news-room","tag-176","tag-228","tag-229","tag-230","tag-average","tag-breaking","tag-grips","tag-pulling","tag-stockings","tag-strength","tag-support","tag-wire"],"_links":{"self":[{"href":"https:\/\/www.dcddesign.com\/blog\/wp-json\/wp\/v2\/posts\/682","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dcddesign.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dcddesign.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dcddesign.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dcddesign.com\/blog\/wp-json\/wp\/v2\/comments?post=682"}],"version-history":[{"count":0,"href":"https:\/\/www.dcddesign.com\/blog\/wp-json\/wp\/v2\/posts\/682\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.dcddesign.com\/blog\/wp-json\/wp\/v2\/media?parent=682"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dcddesign.com\/blog\/wp-json\/wp\/v2\/categories?post=682"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dcddesign.com\/blog\/wp-json\/wp\/v2\/tags?post=682"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}