A Pier supports a columns which supports beams then OWSJ and then lastly a steel deck. 

Elevations on working drawings can give vertical datum points. This can be essential in estimating as we take off the wall construction. 

Identifying building components at the pre-construction stage can give the builders and contractors necessary information for construction. 

Enlargement Plans are used at a larger scale to highlight details such as the make of a steel stair.

Typical Details can show how various portions of a building could be constructed.