Week 7 Challenge

Week 7 Challenge 7 answer

Question 1 

AIM : To model a structure with given details 

Given: 

• Bay spacing 5 m
• Span of Truss 30 m
• Shape of Truss – Pratt Truss
• Slope of truss 20 degree
• Height of the column 15 m
• Floor Beams at 5 m from base
• Secondary beams at 1.5 c/c
• Length of the building 50 m
• Column Supporting Floor Beam @ 6 m c/c Along the frame

Procedure:

1.  Open Staad pro and create a new analytic structure ,also name the structure
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3. Now click on structure wizard in geometry tool bar and click on pratt truss(pratt truss is given in question)
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6. Enter the dimensions of the truss in the pop up box and select ok 
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8. Now click on file and select merge the truss to staad pro
9. Now copy the end node and paste it 
10. Input the dimension of Y as - 15 as given in question and paste the node
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12. Similarly copy paste the remaining nodes as required for the questions
13. After the completion of formation of nodes click on add beam in geometry tool bar and add beams to the structure
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15. You can add nodes to the beams by selecting the beam and them giving the proper proportioning to them (Here I added nodes at 1.5 m c/c for the floor beam as mentioned in the question 
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17. Now to give supports click on support option.
18. Select  rigid joint for the end ones and pin joint for the intermediate ones and place them
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23. Now select the whole structure and click on translational repeat option 
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25. Choose the correct direction and spacing to the structure as to get 50 m in length and enter ok 
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27. 

Result : We created the given structure 

Question 2 answer

Aim : To give specifications to modelled structure 

Prodcedure : 

1. Open the structure you have modelled in staad pro and click on specifiacation 
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3. Now click on data base on the top left corner ,Select india and click on hot rolled sections 
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5. Now add all the sections you required to the box by clicking on add 
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8. After adding them to the box click on each one and assign them to the  respective elements by selecting them 
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14. Now to give supports click on support option.
15. Select  rigid joint for the end ones and pin joint for the intermediate ones and place them

Result : We applied beam steel specifications successfully

Question 3 answer 

Aim : To create groups for the given items 

Given : 

Form group for following members

• External column
• Internal columns
• Roof Frames
• Top chord of the Truss
• Primary Beams
• Secondary Beams

Procedure: 

1. Open the structure you modelled and go to utilities tab 
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3. Now click on groups icon 
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5. In the box Enter the group name and select the type of it
6. Simillarly click on create and name all the groups given in the question
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8. Now click on particular group , then click on assign ,and assign the elements of model as per required 
9. You can click on highlight option to view them

Result : We created groups for given items