Advanced Package Training Scaffolding 2011.1 - Scia-Software GbR

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3. Load cases and combinations General Type of load cases There are three main types of loads which need to be considered [EN12811-1, 6.2.1.]: 12 Advanced Training a) Permanent loads: these shall include the self weight of the scaffold structure, including all components, such as platforms, fences, fans and other protective structures and any ancillary structures such as hoist towers. b) Variable loads: these shall include service loads (loading on the working area, loads on the side protection) and wind loads and, of appropriate, snow and ice loads. c) Accidental loads The permanent loads are inputted as the self weight in Scia Engineer. The only accidental load specified in the European Standard is the downward loading on the side protection [more info in EN12811-1, 6.2.5.1]. The variable loads can be considered as the service loads and the wind load. The service loads are considered in Table 3 of EN 12811-1: Each working area is capable of supporting the various loadings q1, F1 and F2, separately but not cumulatively. q1: Uniformly distributed service load (EN12811-1, 6.2.2.2) Each working area is capable of supporting the uniformly distributed loads, q1 as specified in the table above. F1 and F2: Concentrated load (EN12811-1, 6.2.2.3) Each platform unit is capable of supporting the load F1 uniformly distributed over an area of 500mm x 500mm and, but not simultaneously, F2 uniformly distributed over an area of 200mm x 200mm. The position of each load is chosen to give the most unfavourable effect. When a platform unit is less than 500mm wide, the load may be reduced for this unit in proportion to its width, except that in no case shall the loading be reduced to less than 1,5kN.
q2: Partial area load (EN12811-1, 6.2.2.4) 13 Scaffolding This load has to be applied only for classes 4, 5 and 6. In those cases each platform is capable of supporting a partial area loading q2 on an area Aq2: = ∙ ∙ With: l The length w The width ap Coefficient of Table 3 The dimensions and position of the partial area are chosen to give the most unfavourable effect. One example is shown below: Wind load Following 6.2.7.4 of EN12811-1, two wind loads have to be calculated: the maximum wind load and the working wind load. Maximal wind load When the European Standard for wind loads is available it is used for the calculation of the maximal wind load. To make allowance for equipment or materials which are on the working area, a nominal reference area is assumed at its level over its full length. This area is 200mm and includes the height of the toeboard. (En 12811-1, 6.2.7.4.1) Note: For the purposes of structural design of façade scaffolds made of prefabricated components, design velocity pressures are given in EN 12810-1, 8.3.
Page 1 and 2: Advanced Package Training Scaffoldi
Page 3 and 4: Contents 1. Introduction ..........
Page 5 and 6: 1. Introduction 5 Scaffolding This
Page 7 and 8: Materials 7 Scaffolding For the mat
Page 9 and 10: FLOOR BOARDS 9 Scaffolding The inpu
Page 11: END INPUT OF CONSTRUCTION 11 Scaffo
Page 15 and 16: Load Case 1: Self Weight 15 Scaffol
Page 17 and 18: 17 Scaffolding In the example discu
Page 19 and 20: 1 2 q p ( z) = ce ( z) ⋅ qb = ce
Page 21 and 22: q p e 21 Scaffolding EN 12811-1 §6
Page 23 and 24: 4. Results It is recommended to fir
Page 25 and 26: 6. Scaffolding SLS Check - EN 12811
Page 27 and 28: 7. Steel Code Check ULS Check - EN
Page 29 and 30: Stability Check Buckling data 29 Sc
Page 31 and 32: - Go to the menu “Steel -> Check
Page 33 and 34: 8. Scaffolding ULS Check - EN 12811
Page 35 and 36: 9. Non-Linear Combinations Overview
Page 37 and 38: 1a 5.2.2(3)c lb based on a global b
Page 39 and 40: These inclination functions are ent
Page 41 and 42: 41 Scaffolding The buckling curve u
Page 43 and 44: 43 Scaffolding In this figure, the
Page 45 and 46: Start Choose ΔF u0 = 0 F0 = 0 F =
Page 47 and 48: 47 Scaffolding As specified, the Ne
Page 49 and 50: 49 Scaffolding In the results menu,
Page 51 and 52: ∙ + ∙ = ∙ The equation f
Page 53 and 54: Example Stability_Imperfe Imperfect
Page 55 and 56: Buckling Shape [-] A polynomial has
Page 57 and 58: 57 Scaffolding Using this combinati
Page 59 and 60: 12. Input Hinge Types and non-linea
Page 61 and 62: The rigidities are filled out and t
Page 63 and 64:
63 Scaffolding It is assumed that t
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13. Scaffolding - Coupler Check Whe
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The internal force My for this beam
Page 69 and 70:
Example ULS Check - Scaffolding che
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71 Scaffolding
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73 Scaffolding Where L is the membe
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75 Scaffolding
Page 77 and 78:
Shear The design value of the shear
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For a solid bar, round tube and hho
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17. Template To create a template,
Page 83 and 84:
3. Inserting the user block into an
Page 85 and 86:
Annex A: Wind pressure versus Wind
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Advanced Package Training Scaffolding 2011.1 - Scia-Software GbR

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