All you need to know All you need to know

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					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
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                                                                                                                     Anchoring Technology

                                                                                                                                       6.2.2 TORQUE SETTING
                                                                                                                                                                                           S cont.             6.2.3 ROTATION SETTING
                                                                                                                                                                                                                                      ANCHOR                           S

                                                              0412 592 037
                                                                                                                                    Effective depth is the effective

                                                                                                                                                                     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,

        "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
                                                                                                                                                                                                                                      is provided by the two

                                                                                                                                                                                                           components which make                             (2)
                                                                                                                                                                                                                                     up the Boa™ Coil anchor,
                                                                                                                                                                                                           and the “coil”.                                    the “bolt”
                                                                                                                                                                                                            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
                                                                                                                                                                                                         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,

                                                                                                                                                                                                     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
                                                                                                                                                                                                                                                                                 ~ 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

                                                                                                                                                                                                                                                                                                                                                                    covered stud

• Specifiers Resource Book.
                                                                                                                                                                                                                                                                                                                                                                     CONCRETE BOND FAILURE



• Anchor Design Software.

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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 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.
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