SS-EN-14199 Execution of special geotechnical works - Micropiles

SS-EN-14199 - 2015 EDITION - CURRENT
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1.1 This European Standard establishes general principles for the execution of micropiles. They are for drilled piles constructed using a drilling tool with a diameter less than 300 mm. NOTE 1 This European Standard is not applicable to driven piles, the execution of which is governed by EN 12699. NOTE 2 For a definition of shaft diameter see 3.3. 1.2 Micropiles are structural members to transfer actions to the ground and can contain bearing elements to transfer directly or indirectly loads and or to limit deformations. For examples of micropiles see Figure 1, Figure 2 and Figure 3. Their shaft and base resistance can be improved (mostly by grouting) and they can be constructed with (see Figure 4): - uniform cross section (straight shaft); or - telescopically changing shaft dimensions; - shaft enlargements; and/or - base enlargement. 1.3 Other than practical considerations, there are no limitations regarding, length, inclination (definition of inclination, see Figure 5), slenderness ratio or shaft and base enlargements. 1.4 The provisions of this European Standard apply to (see Figure 6): - single micropiles; - micropile groups; - reticulated micropiles; - micropile walls. 1.5 The material of micropiles covered by this European Standard can be: - steel or other reinforcement materials; - grout, mortar or concrete; - a combination of above. 1.6 Micropiles can be used for: - working under restricted access and/or headroom conditions; - foundations of new structures (particularly in very heterogeneous soil or rock formations); - reinforcing or strengthening of existing structures to increase the capacity to transfer load to depth with acceptable load settlement characteristics, e.g. underpinning works; - reducing settlements and/or displacements; - forming a retaining wall; - reinforcing of soil to form a bearing and/or retaining structure; - improving slope stability; - securing against uplift; - other applications where micropile techniques are appropriate. 1.7 De...

To find similar documents by classification:

93.020 (Earthworks. Excavations. Foundation construction. Underground works Including geotechnics Earth-moving machinery, see 53.100)

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Designation Name

SS-EN 14199:2015

Revision Level

2015 EDITION

Status

Current

Publication Date

May 29, 2015

Language(s)

English

Page Count

72

International Equivalent

EN 14199:2015(IDT)