Two UVL loads on a beam, Mechanical Engineering

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Hi there.

I am stuck on a problem.

I am working out the section of 2 beams for the floor of an elevator. Thus far the critical conditions are made up of a beam that is 1.8m long carrying two UVL loads (since the floor of the elevator will be more loaded on the centre than on the sides), with a h value of 8951.62N. I am wanting to convert the two UVLs into Point Loads for simplification when compiling my Maccaulay''s equations. X distance is given by 2L/3 for PL1 and 2L/6 for PL2 been 1.2m and 0.6m respectfully. Now to work out the magnitude of the force. Do i use the h value for both Point Loads, or do i use h/2??

Assistance please?

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