Industry News & Events

Lindapter; Hollo-Bolt is ICC-ES approved

ICC-ES, a subsidiary of the International Code Council, provides an evaluation service for innovative building products and publishes evidence that products meet technical standards in the form of Evaluation Reports. ESR-3330 is utilized by engineering and construction professionals for using and approving Hollo-Bolt fasteners on construction projects.

The Hollo-Bolt® is a labor-saving ‘blind connection’ for Hollow Structural Section (HSS) or other structural steel elements where access is restricted to one side. Unlike alternative connection methods such as welding, a Hollo-Bolt is quickly installed by simply inserting the fastener into a pre-drilled hole and tightening with a torque wrench for exceptional convenience, saving the contractor time and money.

Product testing was carried out by an independent ISO 17025 accredited test facility and ICC-ES thoroughly examined independent test reports, calculations, quality control methods and other factors. The evaluation, in accordance with ICC-ES Acceptance Criteria (AC437) for ‘Expansion Bolts in Structural Steel Connections (Blind-Bolts)’, verifies that the Hollo-Bolt provides the highest resistance to tensile loading in accordance with AC437 whilst ensuring compliance with the IBC. In addition to validating load data for LRFD and ASD design methods, ESR-3330 confirms that Hollo-Bolt fasteners may be used to resist wind loads and seismic loads in Seismic Design Categories (SDC) A, B and C, giving specifiers additional confidence.

ICC-ES President Shahin Moinian explains why ICC-ES Evaluation Reports are so important: “Lindapter USA can now reference the evaluation report to assure building officials and the building industry that the product meets I-Code requirements,” Moinian said. “Building departments have a long history of using evaluation reports, and ICC-ES operates as a technical resource with the highest quality of product review for the building department.”

The ICC-ES approved Hollo-Bolt is available off-the-shelf at standard pricing from Lindapter’s network of local distributors. Product sizes range from 5/16” to 3/4” to suit a variety of applications and a hot dip galvanised finish offers added corrosion protection. The Hollo-Bolt is available in two versions: the original 3-part design for general hollow section connections and the larger sized 5-part High Clamping Force (HCF) version, for higher strength structural connections, and both are covered by ESR-3330.