Week 5 Challenge

Answer –1

Aim- To determine PG web thickness for given load without stiffener.

Procedure –

1. Check shear buckling requirement limit.
2. Minimum thickness of web requirement
3. Shear capacity check
4. Design of shear buckling

Calculation and check as per attachment-

Result- Web is not adequate to carry a factored shear force of 1000 KN

Answer -2

Aim-

• To Check intermediate web stiffener required for this plate girder for carry shear force 2000 kN
• To Calculate stiffener spacing

Given data- Size of PG – 1500x500x30x12

shear force- 2000 Kn

Procedure –

1. Check shear buckling limit
2. Minimum web thickness limit
3. Check shear capacity
4. Check shear buckling due to shear stress corresponding to web buckling .
5. Check requirement of stiffener limit
6. Calculate bearing capacity
7. Calculate slenderness ratio
8. Calculate spacing of intermediate stiffener

Calculation and check as per attachment-

Result- Intermediate stiffener is required for the given plate girder to resist shear force of 2000 KN and stiffener spacing is 2000 mm C/C.

Answer- 3

Aim- Check PG web safe in shear if web thickness increased.

Calculation and check as per attachment-

Result – After increase web thickness, it is safe in shear.

Answer -4

Aim-

• To calculate Minimum depth and web thickness of a beam with given span and load
• To calculate Flange depth and thickness of assumed section is also to be found out to carry moment

Procedure –

1. Load calculation
2. Calculate max shear force and Bending moment
3. Design of web size check
4. Design of flange size and check
5. Check classification of section
6. Check for moment capacity

Calculation and check as per attachment-

Result- Plate girder is capable to bear max bending moment.