Designing Buildings: Created page with "[https://www.bsria.com/uk/product/Krqmer/ductwork_set_duct1_a15d25e1/ Structural Fixings for Ductwork Systems BG 10/2010], By Glenn Hawkins, Published by BSRIA in 2010, states in..."

2023-12-27T08:07:05Z

Created page with "[https://www.bsria.com/uk/product/Krqmer/ductwork_set_duct1_a15d25e1/ Structural Fixings for Ductwork Systems BG 10/2010], By Glenn Hawkins, Published by BSRIA in 2010, states in..."

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[https://www.bsria.com/uk/product/Krqmer/ductwork_set_duct1_a15d25e1/ Structural Fixings for Ductwork Systems BG 10/2010], By Glenn Hawkins, Published by BSRIA in 2010, states in relation to the working principles of structural fixings: ‘Keying (or mechanical interlock) is the working principle of screws and undercut anchors. As a self-tapping concrete screw is driven into a pre-drilled hole, it keys into the structural base material. An undercut anchor keys into the base material as it is tightened to a specified torque. Hole depth, hole diameter and anchor embedment depth are key criteria that affect performance of these fixings. Keying is also one of the key working principles of direct fastening systems, which drive hardened nails into the structural base material using specialist power tools. Direct fastening also uses bonding and clamping principles too.’

--[[User:BSRIA|BSRIA]]

= Related articles on Designing Buildings =

* Adhesive.
* Bolts.
* BSRIA articles.
* BSRIA definitions.
* Building services.
* Clamp.
* Cramp.
* Crimp.
* Fixing v fastener.
* Fixings.
* Nails.
* Screws.
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Mechanical interlock - Revision history

Designing Buildings: Created page with "[https://www.bsria.com/uk/product/Krqmer/ductwork_set_duct1_a15d25e1/ Structural Fixings for Ductwork Systems BG 10/2010], By Glenn Hawkins, Published by BSRIA in 2010, states in..."