A continuous beam is loaded as shown in the figure below.

A continuous beam is loaded as shown in the figure below. Assuming a plastic moment capacity equal to MP, the minimum load at which the beam would collapse is

For point load max moment occurs under the load Consider IJ
Max. moment

=	PL	=	3	M_P
	4		2

∴ P =	6M_P
	L

Consider HI,

	PL	= 2M_P
	4

∴ P =	8M_P
	L

Collapse load = 6M_P/L (Minimum of two.)

	4M_P
	L

	10M_P
	L