Black Rock City's Heavy Equipment Team (HEaT) operates on a queue system, not a schedule — your Art Support Services Squad will radio HEaT for equipment when you are ready for it. This ensures that you are actually ready to receive it. You must have someone at your build site who can accurately direct the HEaT operator. If you're not on site and ready when the equipment arrives, HEaT will leave, and you will be placed back at the bottom of the queue.
If the equipment is not immediately available, HEaT can often give a rough estimate of how long it will be.
Note that after the event starts, HEaT support is only available on a limited basis, and not at all after Tuesday of event week, so please plan accordingly.