All you need to know All you need to know Ramset™ offers the skill and know-how of How can you benefit from Ramset The Ramset SPECIFIERS RESOURCE BOOK professional engineers to support customers Engineering? This design aid continues to be popular with engineers and contains easy-to-understand who specify our products with our engineering The Ramset ENGINEER technical product information, background resources. Your region is served by a Ramset Engineer who is theory, design methodology and guidance committed to solving your problems and is part of - all in terms of Australian Standards and your local Ramset team, providing service on site or conditions. Our commitment to you is simple: in the design office. If you need engineering information, advice or 6 NSW/ACT: 0412 592 075 email@example.com professional assistance, Ramset offers... Anchoring Technology 6.2.2 TORQUE SETTING ANCHOR 6 S cont. 6.2.3 ROTATION SETTING ANCHOR S 0412 592 037 firstname.lastname@example.org Effective depth is the effective QLD: length, Le of the anchor fixture thickness, t. less the The Boa™ Coil anchor is set by driving the anchor 6.2.4 DISPLACEMENT Anchoring Technology with a hammer up to the into the hole SETTING ANCHORS h = Le - t “depth set” mark and then, spanner or wrench, rotating using a 6.2.5 CHEMICAL ANCHOR the bolt through the coil, DynaSet™ anchors are inserted into a drilled hole, S "All you need to know”. setting the anchor. thereby by the displacement of and set Note that for the purpose the expander plug. ChemSet™ Injection Systems, of calculating “h”, the fixture ChemSet™ Maxima™ Spin thickness “t” should include The diameter of the drilled Capsules, ChemSet™ Hammer the thickness of non structural hole is a similar size to Capsules anchors are set grout, packing, etc. the anchor. that of drilled hole by the hardening in a of the chemical adhesive. Setting tool Resistance to tensile load 0413 743 791 email@example.com is provided by the two VIC/TAS: components which make (2) up the Boa™ Coil anchor, and the “coil”. the “bolt” t The reaction of the concrete against the expanded anchor creates a high friction force and an undercut forms the anchor and the hole between wall. The body of the concrete contains and restricts the expansion forces. The action CHEMICAL ANCHORING h tightening the anchor bolt of Le against the fixture produces preload between the fixture a The adhesive penetrates and the concrete. the pores and irregularities base material and forms of the a key around the threads WA/SA/NT: 0412 579 206 firstname.lastname@example.org As the applied tensile load DISPLACEMENT SETTING The cured adhesive becomes of the stud. increases, a commensura DYNASET™ decrease in preload occurs, te ANCHORS a hard, strong material until at some point after transfers load to the base that has been removed, first all preload material via mechanical slip occurs. The diameter of the drilled adhesive bonds with the and hole is slightly larger than surface of the drilled hole. diameter of the anchor. the outer Concrete is locally crushed When the expander plug around the coil as it beds home (displaced), it expands is fully driven When tested to failure, ENGINEERING accompanied by an increase in further, the a shallow concrete cone in load capacity. body, to increase its effective lower portion of the anchor the top of the anchor. This may form at diameter. Because the cone does not necessarily expanded by a series of anchor is to the tensile strength contribute Applied tensile loads are When failure occurs in blows from a setting punch, of the anchor, but simply resisted by these elements: the concrete the mode amount of shock loading a certain depth at which the concrete registers the broaching effect whereby of failure is a is imparted to the concrete cone strength happens load is still being held until immediately adjacent. The to the cumulative bond to equate applied load is equivalent the reaction of the concrete strength of the adhesive ~ the anchor bolt or stud. to the shear and tensile the expanded body of the against the hole. For a given concrete to the sides of the concrete, at this point capacity of anchor creates a high friction strength, the stronger the ~ the wedge action of the steel cone a cone of failure occurs. between the anchor and force adhesive bond, the deeper in the sleeve. the wall of the drilled hole. the cone. ~ friction between the expanded sleeve of the concrete contains The body drilled hole. and the and restricts the expansion A bolt is subsequently forces. Applied tensile loads are screwed into the anchor. resisted by: ~ shear and tension at the surface of concrete cone. the potential The mode of failure in concrete ~ the stud. tension is characterised Resources – for the designer. formation of a shear cone, by the ~ bond between the stud and the adhesive the apex of which is located shear in the effective depth of the anchor. at the adhesive bond between Applied tensile load the adhesive and the concrete. Anchor ~ shear and tension in the concrete. Applied tensile loads are resisted by the following elements: ~ the bolt. ~ the steel annulus of the anchor. ~ friction between the expanded anchor Anchor Applied tensile load drilled hole. and the ~ shear and tension at the surface of Concrete cone concrete cone. the potential • Focus on simple, quick and reliable designing. CONCRETE CONE FAILURE MODE Adhesive covered stud • Specifiers Resource Book. CONCRETE BOND FAILURE MODE 26 27 • Anchor Design Software. ENGINEERING The Ramset NETWORK Expertise – from Ramset engineers. Ramset and our engineers are active participants in Engineers Australia, Concrete • Degree-qualified professional engineers. Institute of Australia (CIA), National Precast • Design and construction experience. The Ramset WEBSITE Concrete Association of Australia (NPCAA), and Visit www.ramset.com.au to access our up-to-date International Federation for Structural Concrete • Emphasis on value and quality. product and technical design information on line, (fib). When you talk to Ramset you talk to a including free download of our Anchor Design Software. leader in technology and industry. ENGINEERING Service – our commitment to the industry. • Delivering what you want and when you want it. • Priority on enquiry management. • Serving the engineering profession.