Lightning protection guide by OBO

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Last revision 2020

Vydal: OBO BETTERMANN s. r. o. Autor: OBO BETTERMANN

Strana 99 z 288

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through sticking with special mortar. Firmly bonded anchors join chemically the sub- strate, e. Ad- hesive cartridges injection systems, which a threaded rod mounted, are included these fasten- ings. TBS Blitzschutz-Leitfaden 2018 / en / 2020/01/10 14:42:40 14:42:40 (LLExport_02613) / 2020/01/10 14:42:54 14:42:54 99 Chapter The external lightning protection system .2.TBS Blitzschutz-Leitfaden 2018 / en / 2020/01/10 14:42:40 14:42:40 (LLExport_02613) / 2020/01/10 14:42:54 14:42:54 2.2 Fastening principles There are three types force transmission from the anchor the substrate: • Form fit • Adhesive bond • Friction bond Anchors with form-fitting tap the substrate and support themselves it. The threads the bolt ties also work according this principle. Cleaning the drill holes very important for these systems, order prevent slipping out due to dust the drill hole.g. Examples are back cut internal thread an- chors cavity ceiling ties. When mounted with the planned torque, the friction ensures the high load values. The anchor fits "tightly" into the com- ponent. When frictional connection made, spreading ele- ment set the anchor body ensures locking the drill hole