A drop point is where BMI data exchange occurs. It’s the output of information from one BIM process as in input for another BIM process. Giving information to actors at just the right time means identifying the specific times at which the delivery of specific information is needed.

These information drop points should be defined with reference to the relevant project stage and BIM use. Category codes for stages and uses can be used. A recommended annotation format is


Here are some examples:

Drop Point          Description

~S2.DO.01           stage two / cost estimation / first drop

~S2.DO.02           stage two / cost estimation / second drop

~S3.DO.01           stage three / cost estimation / first drop

~S4.DE.__            stage four / scheduling / __ drop

~S7.DO.∞            stage seven / cost estimation / ∞ drop

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