Title: +038=627.001-##001T_03-Fasadevasksystem NorAcon - International Code of Practice (ICOP).pdf
The contained angle formed by the ropes linking the anchors in a Y hang (the Y angle) 2.11.2.11 should be as low as possible and should generally not exceed 90. This is the preferred maximum angle, see Figure 2.4. The greater the angle beyond this, the weaker the connection will be. If circumstances dictate the need for an angle greater than 90, account should be taken of the increased loads at the anchors, at the anchor line terminations and on other components in the system. The angle should not exceed 120 because at angles greater than 120° the loads increase very significantly. There is an exception to this advice on preferred-maximum and maximum Y angles, which concerns flexible horizontal anchor line systems. These systems require special expertise to set up and use safely. Also see 2.11.2.21. Further information is provided in Part 3, Annex L.