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Dimensioning of the metal structure Part2

please check the Part1 before continuing to this part2

1. Identification of loads:

a. Permanent loads:
The permanent loads applied to the structure are:
The weight of the structure, which is made of steel E42

b. Exploitation charges:
The operating expenses applied to the structure are: (See table 27)
The weight of the pipes
The weight of the fluid
The weight of the electrical tracing
The weight of the insulation
Overload: Add 20% of the loads for possible passage of pipes
In progress.

Maintenance Overhead: 100 DaN
Weight of the platform made up of: Quail about is - ladder - railing
Effort due to dilation: they are applied to the sleepers that contain the
Pipe supports such as guides, axial stop, and anchor took from the calculation note
Of the pipelines carried by the rack.

Element
Weight
Electrical Tracing
Pt=50Kg
lagging
Pc=21 Kg
Conduct
Pcdte= 193 Kg
Fluid
Pf= 137 Kg
Weight of the platform
Pplf= 100 Kg
Maintenance charge
Pmaint=100 Kg
Total weight
Ptot=674 Kg

Table: Total weight applied to the rack
The table below shows the expansion forces due to the supports:


Mounting Type
             Fx (N)
          Fy (N)
Axial stop
465
208
Guide
1211
48

Table 28: Expansion stresses due to rack-mounted media

c. Climatic loads -Wind:
In order to determine the effects of the wind on the rack, Annex 9 was used to determine
Of wind actions on the planar elements of the lattice constructions of Regulation NV 65 and
Each element has been isolated in order to define its geometric characteristics and
aerodynamic.
The formula used in Annex 9 is as follows:
饾惞 =. 饾憺. 饾憭. 饾憴
With:
F: The resultant of the forces applied by the wind

Ct: The drag coefficient - Paragraph R-III-3,2 of Regulation NV 65 defines the parameter
By the following formula: Ct = 纬Ct0
In our case, the coefficient 纬 will allow correcting the value of C too when the ratio of
Dimension will not comply with the conditions: 位 less than 2.5 in the case of
Vertical generators resting on the ground, and 位 less than 5 for generator constructions
Vertical or horizontal generators. The values of 纬 are
Table 15 of Annex 9 to Regulation NV 65, as a function of 位.


Figure: Correction coefficient 纬




Table: Trajectory coefficient for IPE






Table 30: Trainer coefficient for HEB: Q: Dynamic wind pressure E: The width of the face offered to the wind L: The length of the face offered to the wind The values of the wind loads in the two directions are shown in the table below



profile
l/e
Ct0
Ct
Q
(daN/m²)
W1
(daN)
W2
(daN)
IPE200 Secondary beam
1,5/200.10-3 =7,5
1,2
1,2
1,44
qx=106
45,79

IPE220 Main beam
1,5/200.10-3 =7,5
1,2
1,2
1,44
qx=106
45,79



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Dimensioning of the metal structure Part2

please check the Part1 before continuing to this part2

1. Identification of loads:

a. Permanent loads:
The permanent loads applied to the structure are:
The weight of the structure, which is made of steel E42

b. Exploitation charges:
The operating expenses applied to the structure are: (See table 27)
The weight of the pipes
The weight of the fluid
The weight of the electrical tracing
The weight of the insulation
Overload: Add 20% of the loads for possible passage of pipes
In progress.

Maintenance Overhead: 100 DaN
Weight of the platform made up of: Quail about is - ladder - railing
Effort due to dilation: they are applied to the sleepers that contain the
Pipe supports such as guides, axial stop, and anchor took from the calculation note
Of the pipelines carried by the rack.

Element
Weight
Electrical Tracing
Pt=50Kg
lagging
Pc=21 Kg
Conduct
Pcdte= 193 Kg
Fluid
Pf= 137 Kg
Weight of the platform
Pplf= 100 Kg
Maintenance charge
Pmaint=100 Kg
Total weight
Ptot=674 Kg

Table: Total weight applied to the rack
The table below shows the expansion forces due to the supports:


Mounting Type
             Fx (N)
          Fy (N)
Axial stop
465
208
Guide
1211
48

Table 28: Expansion stresses due to rack-mounted media

c. Climatic loads -Wind:
In order to determine the effects of the wind on the rack, Annex 9 was used to determine
Of wind actions on the planar elements of the lattice constructions of Regulation NV 65 and
Each element has been isolated in order to define its geometric characteristics and
aerodynamic.
The formula used in Annex 9 is as follows:
饾惞 =. 饾憺. 饾憭. 饾憴
With:
F: The resultant of the forces applied by the wind

Ct: The drag coefficient - Paragraph R-III-3,2 of Regulation NV 65 defines the parameter
By the following formula: Ct = 纬Ct0
In our case, the coefficient 纬 will allow correcting the value of C too when the ratio of
Dimension will not comply with the conditions: 位 less than 2.5 in the case of
Vertical generators resting on the ground, and 位 less than 5 for generator constructions
Vertical or horizontal generators. The values of 纬 are
Table 15 of Annex 9 to Regulation NV 65, as a function of 位.


Figure: Correction coefficient 纬




Table: Trajectory coefficient for IPE






Table 30: Trainer coefficient for HEB: Q: Dynamic wind pressure E: The width of the face offered to the wind L: The length of the face offered to the wind The values of the wind loads in the two directions are shown in the table below



profile
l/e
Ct0
Ct
Q
(daN/m²)
W1
(daN)
W2
(daN)
IPE200 Secondary beam
1,5/200.10-3 =7,5
1,2
1,2
1,44
qx=106
45,79

IPE220 Main beam
1,5/200.10-3 =7,5
1,2
1,2
1,44
qx=106
45,79