Project 1 - Design a simple double cleat angle shear connection
Design a simple double cleat angle shear connection to connect (ISMB 500) secondary beam with a primary beam (ISMB 600) in a mezzanine deck of a building to transfer factored shear force of 200 kN. Consider bolt to connect angle cleat with primary as well as secondary beam.
Do manual design and also prepare a spread sheet to design this shear beam-beam connection
The yield strength of the member (fy )= 250 MPa and ultimate strength of plate (fu) = 410 MPa.
- Consider 4.6 grade ordinary grade bolt.
- Also design by considering 8.8 grade HSFG bolts.
STEPS :
- Assume diameter of bolt (16 or 20 or 24 mm)
- Assume the cleat angle to connect and accommodate the bolt assumed comfortably with proper end and edge distance.
- Calculate shear strength of bolt –double shear case (for bolts in secondary beam)
- Calculate bearing strength of bolt
- Estimate strength of bolt (minimum of shear and bearing strength)
- Calculate total number of bolts required by dividing total load by strength
- Like above calculate number of bolts for primary beam – Single shear
- Now for HSFG bolt, calculate slip resistance of HSFG bolt and estimate the strength of bolt
- PREPARE SPREADSHEET to validate the manual design.
SOLUTION :
- The spread sheet for the same is attached below.