Title: +038=627.001-##001T_03-Fasadevasksystem NorAcon - International Code of Practice (ICOP).pdf
F.2.4.11 Tests have shown that a reliable ground anchor configuration can be achieved if the ground anchor elements are placed in line behind each other, about 1 m apart, in such a way that the loading during use follows that line. However, other configurations may be appropriate. The preferred length for ground anchors is 1 m and they should be installed into the ground by two thirds of their length at a backwards leaning angle from vertical of between 10° and 15°, see Figure F.5.F.2.4.12 The cross section of the metal stake used as a ground anchor element can affect its holding power in the ground. For example, in tests, the average strength for a 35 mm diameter round bar across various ground types was approximately 4 kN. The round bar version was outperformed by a ground anchor element made from 40 mm T section and 50 mm right-angled section by around 35% and 45% respectively. Employers should establish for themselves their preferred profile, e.g. by testing.© IRATA International