Elevation change required at threshold to landing?

[bhbroker]

Situation is an entry door (swings in as usual) that opens to a covered landing. I know the threshold can't be higher than 1.5 inches, but then is an elevation change/step down required to the landing? Or can the floor continue at the same level?

 

[Bagman2524]

Typically 1/2" is the max elevation change allowed before a ramp or stair/step is required.

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