Ground Anchors, Solid and Rock
Overview - Indepth
The main component of an anchor is the tendon, one end is grouted in the load-bearing stratum whilst the other end is attached to the structure by the anchor head. The lower section of the anchor is known as the fixed anchor length and the upper section, were the tendon must be debonded, is the free anchor length.
Anchors with an expected life of more than two years are known as permanent anchors and require the tendon and anchor head to be protected from corrosion to comply with the British Standard BS 8081:1989 Ground Anchorages. In general, ground anchors are installed at an inclination of between 20deg; and 45deg; to the horizontal.
Ground anchor drilling methods and plant are similar to those used to construct Pali Radice mini piles. The boreholes diameter of our anchors is between 90 and 280 mm. In most soils maximum borehole deviation is about 1 in 30, but this can be exceeded in soil containing large stones.
