Title: +038=627.001-##001T_03-Fasadevasksystem NorAcon - International Code of Practice (ICOP).pdf
F.3.4.16 The arm should only be rested on a parapet if it can be verified that the parapet is strong enough and stable enough to support the load, including any lateral load. This may require the services of an appropriate engineer. As many parapets are rendered, it may be necessary to verify that the substructure is satisfactory, particularly in the case of brickwork, or even pre-cast concrete where it may be strong enough in itself, but not attached well enough to the building to be stable. It should be noted that some parapets look solid but are made from materials inappropriate for use in the counterweight anchor system, e.g. plastic foam; timber framing; loose bricks.It is recommended that counterweight anchors are backed up if possible, e.g. if there isF.3.4.17 an appropriate structural element of the building in the vicinity.© IRATA InternationalAnnex F: Page 16 of 212013-Sep-01IRATA International code of practice for industrial rope access Part 3 of 5: Informative annexes: Annex F