Week 7 Challenge

Week- 7

Q.1 Modelling of Structures in Staad

Model a structure with following details

Given Details: -

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: - By using node and add beam and transactional repeat option modeling done and following steps given below.

Step 1: - Node (0,0,0)

Steps 2- Node (15,0,0)

Steps 3- By using add beam command beams connected

Steps 4- Truss slope 20 Degree calculated (15,5.459,0)

Steps 5- By using add beam command beams connected

Steps 6- Inserting 4 Nodes on beam and Rafter to create 5 bay in truss

Steps 7- Adding beam by using add beam tool

Steps 8- By using mirror tool balance truss created

Steps 9- Columns and secondary beams created by using insert node, add beam

Steps 10- By using transactional repeat the truss repeated 10 times at 5m c/c for its length to be 50m.

Result:- Modeling completed with given data.

Q.1 Applying Specification and member property for modelled structure

Apply beam steel specification as mentioned below.

Given Data: -

Columns - ISMB 500

Truss -Top & Bottom chord – ISA 110x110x12, Diagonal member – ISA 75x75x8

Purlins – ISMC 150

Tie Beam – ISA 120x120x10

Floor Primary beams – ISMB 300

Secondary beams - ISMC 150

Floor beam supporting columns – ISMB 300

Assume bottom of the main column as Fixed support & intermediate floor beam supporting column as pinned

Orient the Angle sections by applying Beta angle.

Model a structure with following details

Procedure: -

Steps 1- Add Section Properties and Assign

• Go to properties then section database option
• Select the Indian Section S type ISMB 500 and add

Next choose ISMB 300 and Add

Choose Angle Section ISA 100x100x12 and add.

Similarly choose Angle Section ISA 75x75x8, ISA 120x120x10 then click add

• With this all given section properties added
• 

Step 2 :- Assigning Properties

• Next we need to assign the properties.
• Select column section properties
• Then Click Assign to selected member

• Similarly select and assign properties for Truss bottom and top chord and diagonal bracings, Floor Beam Support Column, Secondary Beam

Steps 3- Assigning Supports

• Go to Supports then click on create
• Click on Fixed support tab and click add

• Similarly add pinned support

Result: - Section Properties and support added and assigned to the members.

Q.3 Creating a group exercise.

Form group for following members

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

Procedure:-

• Go to Utility Tab and select Group

• Then Type name External Column and Select Type Beam

• Then Select External Column and Click Associate

• Then click create to add another group

• Follow same procedure for all the members

Result: - All Mention Groups formed and checked.