CEN/TC 288/WG 9 - Soil nailing (TG1) - Reinforcd fills (TG2)

1.1   This European Standard establishes general principles for the execution, testing, supervision and monitoring of soil nailing.
1.2   Soil nailing is a construction technique, used to enhance/maintain the stability of a soil mass by installation of reinforcing elements (soil nails). Typical examples of soil nailing are given in Annex A.
1.3   The scope of soil nailing applications considered in this European Standard includes the installation and testing of soil nails and associated operations, required when stabilising existing and newly cut slopes and faces in soil, existing earth retaining structures, embankments, existing tunnels and the excavated facing of new tunnels in soil.
1.4   Soil nailing may be used to form part of a hybrid construction. This European Standard is relevant only to the soil nailing aspect of such constructions.
1.5   Techniques, such as reinforcement of ground by vertical inclusions (sheet piles, bored or driven piles, or other elements) and stabilisation with rock bolts, prestressed ground anchors or tensions piles are not covered by this European Standard.
1.6   Guidance on practical aspects of soil nailing and aspects on design, durability and testing is given in informative Annexes A, B and C, respectively.

TC - Modification to 6.3.2.2 and Table A.1

1.1   This European Standard establishes general principles for the construction of reinforced fill.
1.2   This European Standard covers engineered fills that are reinforced by the inclusion of horizontal or sub-horizontal reinforcement placed between layers of fill during construction.
1.3   The scope of reinforced fill applications considered in this European Standard includes (Figure 1):
¾   earth retaining structures, (vertical, battered or inclined walls, bridge abutments, bulk storage facilities), with a facing to retain fill placed between the reinforcing layers;
¾   reinforced steep slopes with a facing, either built-in or added or wrap-around, reinforced shallow slopes without a facing, but covered by some form of erosion protection without a facing, reinstatement of failed slopes;
¾   embankments with basal reinforcement and embankments with reinforcement against frost heave in the upper part.
Principles for the execution of other special geotechnical works using soil nails, bored piles, displacement piles, micro piles, sheet pile walls, diaphragm walls, grouting or jet grouting are established in other European Standards.
Reinforcement of road pavements is not covered by this Standard.