The H-Factor

From a Customer: "On this job, the main is sloping (using the sloping pipe block), as are the lines. I need the last head to be 5” down from the deck. I Gave them a fixed elevation of [5 Bts] and a fixed elevation at the top of the riser, [34 BTS], but it does not work properly."

The solution here calls for using Above Finished Floor (AFF) blocks. Why? Because the sloping pipe markers cannot use a BTS as a starting elevation – it has to be an AFF. Fortunately, there is an easy way to do this.

In the Define Pipe Elevations tool (AFF) there is an option named AFF based on BTS. This tool will automatically calculate the AFF at the point selected, adding both an AFF block and a BTS block.

If i input the 5 inches as the Distance, select AFF based on BTS and then select Pick Defining Points, I can then pick near the last head, as requested by the customer.

As this requires a single insertion point, it can only be inserted on one line at a time. You can, however, stretch the orange definition line across as many lines as you like. Or, you can copy or array the blocks as needed, as long as the elevations line up.