38 mm x 195 mm
38 mm x 288 mm
38 mm x 112 mm
(0, 0)
Question 2 (70 marks):
The beam section is symmetrical about its centroidal y axis, cy.

Find the x and y coordinates (xbar and ybar) of the centroid of the beam cross-section, relative to coordinates (0,0).

Find the moments of inertia, ITF of the top flange, Iweb of the beam web and IBF of the bottom flange, all about Cx.

Find the moments of inertia, ICx and ICy, of the beam-section about its centroidal axes


Solution:
 
xbar =
mm
 
ybar =
mm
 
ITF =
× 106 mm4
 
Iweb =
× 106 mm4
 
IBF =
× 106 mm4
 
ICx =
× 106 mm4
 
ICy =
× 106 mm4