Reconnecting Limestone / Sandstone / Travertine / Granite ... · Travertine / Granite / Marble to...
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Rotary percussion 3-jaw-chuck-type drill SDS rotary hammer drill Reconnecting Limestone / Sandstone / Travertine / Granite / Marble to Solid Concrete using Asymmetric DryFix METHOD STATEMENT 1. Before installing the Asymmetric DryFix ties, appropriate on site testing must be carried out to determine the correct tie size and pilot hole diameters 2. Mark the position for the Asymmetric DryFix ties on the face of the near wythe 3. Drill the correct diameter pilot hole (as determined by the slimmer end of the Asymmetric tie and the density of the back-up material) through the near wythe and into the far wythe, to the specified depth (using a rotary percussion drill, 3-jaw-chuck-type) 4. Re-drill the hole in the near wythe only to increase its diameter to create a pilot hole suitable for the larger diameter section of the Asymmetric tie 5. Fit the special DryFix Power Driver Attachment to an electric hammer drill (SDS type) 6. Load the larger diameter section of the Asymmetric DryFix tie into the insertion tool with the smaller diameter end showing 7. Power-drive the tie into position until its outer end is recessed below the face of the near wythe 8. Make good the entry hole with matching materials RT20 Specification Notes The following criteria are to be used unless specified otherwise: A. An appropriate pull test must be carried out on site to determine the correct tie Specification and pilot hole diameters. Refer to Helifix Test Sheet LT01 or contact the Helifix Technical Team B. Length of DryFix ties to be sufficient to accommodate width of near wythe + width of cavity + 2” into the concrete C. Ensure pilot hole goes 3” into the concrete D. Diameter of pilot hole to be determined on site, through testing – typically: 5mm for 80/65 Asymmetric DryFix tie 6.5mm for 10/80 Asymmetric DryFix tie E. For minimum fixing density, holes should be drilled at 36” centres horizontally by 18” vertically, in a staggered pattern The above specification notes are for general guidance only and Helifix reserves the right to amend details/notes as necessary. For drilling pilot hole ..................................Rotary percussion 3-jaw-chuck drill For installing Asymmetric DryFix .............DryFix power-driver attachment fitted to SDS rotary hammer drill 650w/700w NOTE: As the back-up material is concrete, it may be necessary to us an SDS drill to drill the pilot hole. Care should be taken when drilling through the near wythe brick when using an SDS drill. RECOMMENDED TOOLING If your application differs from this repair detail or you require specific advice on your particular project, call Helifix toll free on 888-992-9989. Our Technical Department can provide you with a full support service including: Advice, assistance and recommendations on all structural repair matters Devising and preparing complete repair proposals for specific situations GENERAL NOTES www.helifix.com A division of HALFEN USA Inc. • P.O. Box 547 Converse, TX 78109 • [email protected] Toll Free: 888-992-9989 • Fax: 877-683-4910
Transcript of Reconnecting Limestone / Sandstone / Travertine / Granite ... · Travertine / Granite / Marble to...
Rotary percussion3-jaw-chuck-type drill SDS rotary hammer drill
Reconnecting Limestone / Sandstone /Travertine / Granite / Marble to SolidConcrete using Asymmetric DryFix
METHOD STATEMENT
1. Before installing the Asymmetric DryFix ties, appropriateon site testing must be carried out to determine thecorrect tie size and pilot hole diameters
2. Mark the position for the Asymmetric DryFix ties on theface of the near wythe
3. Drill the correct diameter pilot hole (as determined bythe slimmer end of the Asymmetric tie and the density ofthe back-up material) through the near wythe and intothe far wythe, to the speci�ed depth (using a rotarypercussion drill, 3-jaw-chuck-type)
4. Re-drill the hole in the near wythe only to increase itsdiameter to create a pilot hole suitable for the largerdiameter section of the Asymmetric tie
5. Fit the special DryFix Power Driver Attachment to anelectric hammer drill (SDS type)
6. Load the larger diameter section of the AsymmetricDryFix tie into the insertion tool with the smallerdiameter end showing
7. Power-drive the tie into position until its outer end isrecessed below the face of the near wythe
8. Make good the entry hole with matching materials
RT20
Specification Notes
The following criteria are to be used unless specified otherwise:
A. An appropriate pull test must be carried out on site to determine the correcttie Speci�cation and pilot hole diameters. Refer to Heli�x Test Sheet LT01 orcontact the Heli�x Technical Team
B. Length of DryFix ties to be su�cient to accommodate width of near wythe +width of cavity + 2” into the concrete
C. Ensure pilot hole goes 3” into the concrete
D. Diameter of pilot hole to be determined on site, through testing – typically:5mm for 80/65 Asymmetric DryFix tie6.5mm for 10/80 Asymmetric DryFix tie
E. For minimum �xing density, holes should be drilled at 36” centreshorizontally by 18” vertically, in a staggered pattern
The above specification notes are for general guidance only and Helifix reservesthe right to amend details/notes as necessary.
For drilling pilot hole ..................................Rotary percussion 3-jaw-chuck drillFor installing Asymmetric DryFix .............DryFix power-driver attachment �tted
to SDS rotary hammer drill 650w/700w
NOTE: As the back-up material is concrete, it may be necessary to us an SDS drillto drill the pilot hole.
Care should be taken when drilling through the near wythe brick when using anSDS drill.
RECOMMENDED TOOLING
If your application di�ers from this repair detail or you requirespeci�c advice on your particular project, call Heli�x toll free on888-992-9989. Our Technical Department can provide you with afull support service including:
Advice, assistance and recommendations on all structuralrepair mattersDevising and preparing complete repair proposals for speci�csituations
GENERAL NOTES
www.helifix.com
A division of HALFEN USA Inc. • P.O. Box 547
Converse, TX 78109 • [email protected]
Toll Free: 888-992-9989 • Fax: 877-683-4910
