1 General
1.1 The following technical information is to be understood as excerpt from the referred under Chapter 2 type test, if available and valid.
1.2 The regulations and conditions of the valid type test are always applicable.
1.3 Both orthogonal to each other shoring directions have to be verified with their respective supporting conditions and loads!
2 Type test
2.1 This application is based on the following document:
2.1.1 Performance data of the PERI UP Rosett Flex Shoring Tower MDS K shoring system, which have to be taken from the assembly and usage instructions for the PERI UP Rosett Flex Shoring Tower MDS K shoring system.
2.2 Assembly heights:
- free standing up to H = 6.39 m (only as single tower);
- restrained at the top up to H = 21.39 m.
3 Design concept
3.1 The design concept with an absolute safety factor corresponding to DIN 4421 has been used.
3.1.1 The safety factor for actions γF has been taken as 1.50.
3.1.2 The absolute safety factor for steel γtot (γM γF) is 1.65.
4 System assumptions
4.1 The pre-deformations, inclinations and offsets of the structural system have been determined according to DIN EN 12812:2008-12 and in connection with the Application Guidline for Shoring based on DIN EN 12812, Edition 2009-08.
5 Load assumptions
5.1 Loads have been calculated in accordance with DIN EN 12812:2008-12 Chapter 8. The following values are characteristical ones.
5.2 Self-weight of the shoring
The self-weight of the shoring has not been mathematically considered. The self-weight of the structure is of a negligible magnitude when compared to the live load.
5.3 Wind load on the shoring
The wind load on the shoring has been determined in accordance with DIN EN 1991-1-4 and has been applied to act constantly over its height: wk = q [kN/m²] cf [-] A [m²/m] q = 0.45 [kN/m²] cf = 1.85 [-] A = 0.20 [m²/m]
6 Verification procedure
6.1 The deflections and internal forces and moments have been calculated according to DIN EN 12812:2008-12, and in connection with the Application Guidline for Shoring based on DIN EN 12812, Edition 2009-08, under γF-times actions and 1/γM-times stiffnesses based on second order theory, and have been compared to the design values of the plastic strengths (verification procedure elastic-plastic).
6.1.1 The partial factor for actions γF is 1.50.
6.1.2 The partial factor for material γM is 1.10.
7 Actions
7.1 The actions that have to be taken into account for the shoring verification are to be determined on the basis of DIN EN 12812:2008-12.
8 System capacities
8.1 The permissible leg loads correspond to class B1 shoring in accordance with DIN EN 12812:2008-12 Chapter 4.3.1 (γ = 1.00).
8.1.1 The verification of the shoring can be classified into design class B1 of DIN EN 12812:2008-12 when the action is determined precisely and the rigid shoring body does not settle.
8.2 The characteristical value of the action is to be compared by the verification to the calculated permissible leg load.
9 Supports
9.1 The supports have to be determined and/or statically verified in each application case according to the local circumstances.
9.2 The enforced building regulations have to be observed in connection with DIN EN 12812:2008-12 Kapitel 7.5.
9.3 The shoring towers have to be generally supported on even surfaces with sufficient load bearing capacity.
10 Global sliding
10.1 The safety coefficient for sliding γμ by the minimum load against sliding of a free standing structural system is in the amount of 1.30.
10.2 The partial factor for stabilizing actions γF is 0.90.
10.2 The partial factor for destabilizing actions γF is 1.50.
11 Top restraint
11.1 The assumption of a horizontal support at the top of the shoring has to be ensured by suitable design measures, if necessary.
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Changes in v1.2.6 (07.02.2020) Bugfixing:
* The Excel-extension was updated.
Changes in v1.2.5 (07.02.2020) Bugfixing:
* Wrong values for the permissible leg load at single towers were corrected.
Changes in v1.2.4 (27.12.2019) Improvements:
* The maximum height for towers restrained at the top was expanded to 21.39 m.
Changes in v1.2.3 (17.09.2019) Revisions:
* The Home-Icon was updated.
* The Input-Label for the horizontal force was updated.
* The values for free standing towers were updated.
* The Diagonal Strut ST 100 was replaced by the new Ledger Brace UBL-2 100/100. Improvements
* The terms and conditions of use and a part of the language files were moved to the core-component.
Changes in v1.2.2 (31.03.2019) Revisions:
* The performance data has been updated.
Changes in v1.2.1 (24.08.2018) New features:
* The cookie-banner was added. Revisions:
* The download button was changed.