Week 4 Challenge

AIM AND INTRODUCTION : DESIGN OF BEAMS

PROCEDURE : SECTOIN CLASSIFICATION CALCULATION OF THE FOLLOWING BEAMS

For built up box d/t=960/12=80 Hence the section is semi compact

PLASTIC compact semi compact

for RHS section FLANGE b/t 29.3`epsilon` 33.5`epsilon` 42`epsilon`

web d/t 67.1 `epsilon` 84`epsilon` 125.9`epsilon`

`nbsp; d/t`= 130/10 = 13 section is plastic

`nbsp; ` PLASTIC compact semi compact `

• Double angle (Back to back) – 2 x ISA 75x75x6 d/t 9.4`epsilon` 10.5` 15.7
• 75/6=12.5 hence semi compact section.

RESULT - THE GIVEN SECTIONS ARE CLASSIFIED ACCORDING TO SECTION CLASSIFICATION.

AIM AND INTRODUCTION : TO FIND THE EFFECTIVE LENGTH OF THE MEMBERS

PROCEDURE :

RESULT - Kz of the rafter =1.0

KY of the rafter =1.2

AIM AND INTRODUCTION : DEFLECTION OF BEAMS

PROCEDURE :

RESULT- The required stiffness of the simply supported beam EI=1.36x10^5

AIM AND INTRODUCTION : MOMENT CAPACITY DETERMINATION PROBLEM

PROCEDURE :

RESULT: BEAM IS SAFE IN DEFLECTION WEB BUCKLING

AIM AND INTRODUCTION : DESIGN OF PURINS

PROCEDURE :

RESULT: purlin is desigined and for deflection design capacity and overall member strength.

Q.3b