To model columns for industrial steel structure using TSD

CHALLENGE 2

1.AIM:

To create column properties for different types of pedestal members and model in the grids created as per the assignment 1

Introduction:

The pedestal is the block of concrete that supports the column. It transfers the load from the column to the foundation safely. It is also provided to avoid contact between the soil and the metal element. The concrete pedestals start from the BL and end at GF level

For the above question, let us first assume the pedestal dimension and model it on the grids created as per the previous assignment

Procedure:

• Launch Tekla Structural Designer 2022
• Open the file created in the previous assignment
• Since we are going to begin the modelling of the members it is necessary for us to check the settings from Home – Settings as follows

• Also ensure the auto design is off

• Also check the material settings from Home- Materials

• Check the construction levels and grids

• To create a concrete pedestal, Home – Manage Property Sets – New – Members – Concrete column

• We are going to create 2 concrete pedestals, PD of size 400 * 800 and PD1 of size 600 * 400 mm

• Check for major alignment to be at centre, releases- fixed at both top & bottom and nominal cover as 50mm
• As we check the column positioning in the previous assignment , 2 construction lines are to be drawn to place the columns

• Along grid C, place PD
• Along other grids place PD1
• Check whether the pedestals start from Base level and ends at GF level

• Note that longer dimension of the column has to be placed towards longer side

• We can also view the structure in 3D view

Result:

• The column properties are created by using Manage Property Set
• The construction lines are created wherever needed
• The columns are modelled by using Model – Concrete – Column option

2. AIM:

To create column properties for steel columns and model columns in the grid created as per assignment 1.

Introduction:

The steel column is used to transfer the loads from the steel beams down to the pedestal. ISMB sections are to be used for steel columns. The steel columns level is from the GF level till the Roof beam level RBL

Procedure:

• Go to Home – Manage Property Sets – New – Members – Steel Column
• Go to Section and modify it as ISMB 350

• Pick major alignment as centre
• Releases – Bottom pinned and Top fixed

• The steel columns in grid line C are modelled with C1 using Model – Steel – Columns
• Click on the intersecting point of the grid C to place the columns
• After placing it could be viewed in 3D also

• Another set of columns C2 of ISMB 350 but with rotation as 90 deg is to be modelled for the remaining grids

• Model C2 for the remaining gridlines/construction lines

Result:

• The beam properties are created by using Manage Property Set
• The columns are modelled in the appropriate grids by using Model – Steel – Column option
• Validation is done to check for any errors/warnings

3. AIM:

To create beam properties and model primary and secondary beams on the ground floor

Introduction:

Primary beams are those which transfer load to the columns. They directly rest on columns

Secondary beams are those which transfer load to another beam necessarily a primary beam. They rest on the primary beams. Secondary beams are provided to break the slab length

The beam properties are first created using Manage Property Set. Then they are modelled in the grids

Procedure:

• Model a ISMB 350 beam as a primary beam connecting columns as shown

• For larger span of 7.4 m , ISMB 400 is provided. A beam B2 is modelled using Manage Property Set
• A secondary beam B3 of ISMB 250 is modelled to break the slab span

• For modelling secondary beam, construction lines are to be drawn between grids C and D and between E and F1 as shown

• Now B3 is modelled in those construction lines

• View it in 3D

Result:

Thus the primary beams B1 and B2 are modelled between columns and secondary beam B3 is modelled between primary beams to break the length of the slab.

• Validate the model once again