Week 8 Challenge

1.

Aim: To apply load exercise to member of the structure.

Given -

Form a Load case as DL for Dead Load.

Apply Self weight.

Apply member load of 3 kN/m on the rafter.

Apply member load of 6 kN/m on the secondary beams.

Apply point load of 20 kN at node intersecting inclined member on the top chord.

Form a Load case as LL for Live Load. Apply member load of 4 kN/m on the rafter.

Apply member load of 7.5 kN/m on the secondary beams.

Form load combination 1.5DL+1.5LL.

• Procedure -

• Go to loading option in that load case details.

• Add loads such as dead load, live load.

• In member load put loads as per given data. . Choose Y direction to apply loads. Negative sign acts as a downward direction.

Assign loads to selected member as per given data.

• For nodal load go to it add load at FY point.

• Assign load to selected nodal points.

• For load combination go to load combination option.

• Select dead load, live load and apply factor as per given data.

• Here we can take as servecibility criteria so add one additional load combination.

• 1DL+ILL.

• After that add load combination.

2.

• Aim - To run the analysis and find results on the member mentioned.

Given -

• Run the analysis.

. Find the Maximum Moment in the Secondary beam for 1.5DL+1.5LL case.

• Find the Maximum Axial force on the inclined bracing and identify the member having the maximum force for 1.5DL+1.5LL case.

• Identify Bottom chord of Truss having Maximum shear Force & Maximum moment for 1.5DL+1.5LL case and present the values.

• Maximum moment for secondary beam 1.5DL+ 1.5LL case - 53.343 KNm.

• Maximum axial force on inclined bracing - 456.949 KN.

• Member on which acts maximum force for 1.5DL+1.5LL case - Beam member no 13.

• Maximum shear force for bottom chord 260.262 KN.

• Maximum moment for bottom chord - 420.855 KNm.

• Member on which acts maximum shear force and maximum moment for 1.5DL+1.5LL case - Beam member no 1.

3.

Aim: To view and rectify the warnings and instabilities in the structure.

• Procedure -

Go to given attachment. Open the model of structure.

• After go run analysis option

• Choose perform analysis.

• Run the analysis.

• See the warning in view option.

• See the instability in the Results layout option. Choose that and fix it.

• After all warnings fixed we was run the analysis and see the result.

• Go to results view instability for the joint.

4.

Aim - To apply design parameters for modelled structure as per IS 800:2007 code.

Procedure -

• Go to analysis and design.

• Select steel as material. Select IS 800:2007 code.

• Define design parameters.

Apply it on beam and truss element.

• Here we take Lx - not applicable.

Ly - as a default use for apply to member.

• Lz - as a default use for aaply to member.

Ky - as factor take 1.2 as per IS 800.

• Kz - as factor take 1.2 as per IS 800.

• Other parameters such beam apply to selected as 1.0.

• Utility ratio as take 1.2 for apply to structure.