Masonry Retaining Walls:
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Where ground anchors are being utilised, careful consideration should be given by the designer to the following points:-
a) Detailed field and laboratory tests to establish soil characteristics.
b) Full-scale load tests to confirm laboratory predictions.
c) Assessment of consequences of potential long-term creep.
d) Overall length of anchor, fixed anchor length, failure planes.
e) Effects of anchor groups if anchors closely spaced
f) Likely stress losses due to tendon relaxation.
g) The free anchor length can be released from the grout by use of smooth tubes forming the second barrier of corrosion resistance, thus avoiding stressing ground close to structure.
h) The factor of safety to be applied.
i) Reference should be applied to the British Standard BS.8081 : 1989 or other appropriate document for advice on usage and design.