LX8,LX12,LX16,LX20,LX25,LX32 sheet pile

Sheet pile on loads Enter the user defined partial factor applied to the different kind of loads:These failure modes, the evaluation of the loads on the system, and selection of certain system parameters to prevent failure are discussed in this chapter. Factor on effect of load corresponds to the effect of permanent loads (unfavorable and favorable) and variable favorable loads. Factor on LX8 and LX12 variable load, unfavorable corresponds to the effect of variable unfavorable loads. Pile driving and installation—Piles should be driven with the proper size hammer for the size of LX8 pile, depth of penetration, and soil conditions. Material factors Enter the user defined partial factor applied to the cohesion and the tangent value of the friction angle.

A potential rotational failure of an entire soil mass containing an anchored or X16 and LX20 cantilever wall is illustrated. When LX12 impact hammers are used, the hammer should be appropriately sized and a protective cap utilized to prevent excessive damage to the pile. This LX 20 potential failure is independent of the structural characteristics of the wall and/or anchor. Enter the user defined surface level at the passive side: the level of the resisting soil is lowered below the expected level by an amount equal to the Increase retaining height percentage of the distance between the lowest support and the excavation level, limited to a maximum (i.e.Maximum increase retaining height).

In some conditions, steel sheet piles are not appropriate for driving smaller pile sections and have caused excessive damage to the pile. Enter the user defined partial factor applied to the bearing capacity and the earth resistance. A smaller LX16 impact hammer may work better in these situations Enter the user defined partial factor applied to the effect of the loads: The loads exerted on wall/soil system tend to produce a variety of potential failure modes.

Enter the user defined partial factor applied to the soil properties:used during the Overall Stability verification. LX25 or LX32 sheet pile should not be driven more than an eighth inch per foot out of plumb in the plane of the wall or perpendicular to the plane of the wall.

The adequacy of the LX20 system (i.e. factor of safety) against this mode of failure should be assessed by the geotechnical engineer through convential analyses for slope stability (EM 1110-2-1902).Enter the user defined partial factor on base resistance b applied on the characteristic value of the base resistance of the ground Rb;k to get the design value of the base resistance Rb;d (Equation 33.1): Alignment—Piles should be maintained in alignment during driving. This type of failure cannot be remedied by increasing the depth of penetration nor by repositioning the anchor. LX 8,LX 12,LX 16 sheet pile may be used in a variety of applications for stream restoration and stabilization. This input is available only if the Check vertical balance check-box was enabled in the Model window. The only recourse when this type of failure is anticipated is to change the geometry of retained material or improve the soil strengths.

Click this button to reset all values to the default values prescribed in the Belgian Annex of the Eurocode 7. Typical applications of sheet pile are in high risk situations where no additional bank or bed movement is acceptable. Rotational failure due to inadequate pile penetration. Lateral soil and/or water pressures exerted on the LX 16 wall tend to cause rigid body rotation of a cantilever or anchored wall as illustrated. he default values prescribed by the Belgian Annex of the Eurocode 7 are written at the left of each input area of the User Defined Partial Factors window. If modified, the value appears in red color.

Sheet pile applications include toe LX 25 walls, flanking and undermining protection, grade stabilization structures, slope stabilization, and earth retaining walls. TFor background information on the Belgian Annex of the EuroCode. This type of failure is prevented by adequate penetration of the piling in a cantilever wall or by a proper combination of penetration and anchor position for an LX 12 anchored wall.

In this window the defaults partial factors prescribed in the CUR 166 Dutch design code are given and can be modified by the user. Sheet pile is often combined with soil bioengineering techniques to provide stability to a stream, stream slopes, or other manmade structures. Other failure modes. Failure of the system may be initiated by overstressing of the sheet piling and/or anchor components as illustrated. It is particularly useful in open channel environments that are characterized by high velocities and shear stresses. Because of the LX25 complexity of behavior of the LX 8 wall/soil system, a number of simplifying assumptions are employed in the classical design techniques. The CUR 166 Dutch design procedure distinguishes three different safety classes called Class I, Class II and Class III which differ by their reliability indexes, Its use has distinct advantages because of accepted design techniques established contracting and construction procedures. Rotational stability of a cantilever wall is governed by the depth of penetration of the piling or by a combination of penetration and LX 32 anchor position for an anchored wall. However, the use of LX32 sheet pile does have certain cost, aesthetic, ecologic and geomorphic drawbacks. It is important to balance these potential drawbacks against the need to provide static protection.

Design of the LX 20,LX 25 and LX 32 anchorage to preclude the failure depicted is discussed later in this article. Design of the structural components of the system is discussed. Those partial factors are used for the following verification methods according to CUR 166:Foremost of these assumptions is that the deformations of the system are sufficient to produce limiting active and passive earth pressures at any point on the wall/soil interface.