C/A004 Concealed Roof Anchor

ROOF ANCHOR DEVICE CA004

CONCEALED ANCHOR

NZ Patent No. 503273, 328961      NZ Design Reg. 400615
AUS Patent No. 746393        AUS Design Reg. 143497

This SAFETOR Roof Anchor is designed to be bolted to timber structures but may just as easily be bolted to steel as required. The purpose of the removable eyebolt is to allow the Roof Anchor to be concealed while not in use. This feature provides a clean roof line where protruding Anchors would detract from visual appearances. The location of the Anchor within the roof is distinguishable by the cap washer used to seal the eyebolt hole against weather ingress. The cap washer would be invisible from ground level but easily seen from on the roof.

MANUFACTURED FROM MILD STEEL TO:
  • AS 3679-250
  • AS 3679-300
  • BS 4360-43A
ULTIMATE YIELD:
  • 40kN Parallel to mounting plate
  • 20kN Away from mounting plate
APPLICATION AS PER AS/NZS1891.4:2000
  • 1 person - Free fall arrest
  • 2 persons - Restrained fall arrest
  • 2 persons - Total restraint

WITHSTAND LOADS IN EXCESS OF 2000Kg DURING DESTRUCTIVE TESTING

FITS ALL TYPES OF SMOOTH SURFACED ROOFS - Pan or Crest FIXED


TEK Screw and Profile Washer not included with kit. Available from roofing manufacturer.

Note: Items not required for concrete tiles.


When installing any Anchoring Device to a structure the installer must ensure that the structure supporting the Anchor Device will withstand at least the loadings for which the Anchor Device is installed to receive.

Choose and install an Anchor Device that will provide the level of protection that could be required for current and future requirements. Remember that if the Anchor Device is a permanent installation, other people will use the Device, in some cases assuming safe load design. Wherever possible, label Anchor Devices for the safe load design of the installation.

Safetor Roof Anchors
Load Testing Timber Structures

To comply with the AS/NZS 1891 .4 : 2000 Standards covering Anchor Points in buildings, a system has been designed by us to enable a standard 90 x 45 framed roof truss to withstand the 15kN loading required. The 90 x 45 timber commonly used for the manufacture of roof trusses was randomly selected prior to the manufacture of the truss.

Safetor Roof Anchor / "Concealed Anchor without Web Truss", Serial No. 01696
Required force Kilonewtons - 15 kN applied force, 15 kN, load held 5 minutes, 10mm deflection of truss, zero permanent set, no failure observed.

Test Equipment:
Corrugated Iron Roof Rig (constructed by Collins Corp. Ltd.)
Enerpac Pump, Hose Gauge, 2 Ton retractable Ram Cylinder calibrated against Shimadzu Universal Grade 1 Testing Machine, Model REH 50, Serial No. 72666. Calibration due May 2007.
Test witnessed by Nick Collins - Director / Collins Corp. Ltd.
Tested by Jim Saunders - Senior Mechanical Technician
BENDING
Bending reduces the full impact on the structure. As seen in the photos the anchor has been bent, this is an indication that the anchor has been loaded and must be replaced.

TIMBER TRUSS
ALL ROOF TRUSSES MUST REMAIN IN ACCORDANCE WITH NZS3604 AT ALL TIMES. AFTER 7 LOAD TESTS OF 15KN THERE WAS NO VISIBLE SIGNS OF DAMAGE TO THE TRUSS.

THESE TESTS WERE CARRIED OUT BY
MATERIAL TESTING LABORATORIES LIMITED OF AUCKLAND



Note:
ALL ANCHOR POINTS MUST BE POSITIONED IN THE CORRECT PLACE.

BEFORE DESIGNING ANY ANCHOR POINTS INTO ANY BUILDINGS YOU MUST FIRST CONTACT AN APPROVED AGENT AS TO THE CORRECT LOCATION OF THE ANCHORS.