[Keith Jordan]

Without pictures, it is difficult to explain the structure of most of the coaches on this site, but i do think it should be addressed for those unaware.

The main frame rails, almost completely hidden, can best be seen at the rear.  Identifying them is important.  The whole lower framework of the under bays is suspended from two 6 X 6 square tubes vertically oriented in the rear and two in the front.  To these tubes are (guessing here) 5" channel running parallel to the axles, front and rear.  Most generally it can be seen in the rear ahead of the  drive axle supporting the oil cooler and fans.  It is directly under this channel in line with the square tube that cribbing is to be placed.  Ditto for the front.  It should be noted here that the channel will not support coach weight unless cribbing or stands are placed directly under the square tubes (don't ask how I know this).  Also, the channel is welded in  place with the edges facing down meaning the edges will indent cribbing or even act as a splitter.  For this reason a heavy piece of flat stock (I use 6" wide X 3/4" thick 8" long) should be in between the channel edges and any wood used for cribbing. 

Now for credentials,  I asked for "supporting"  school while at Newell, it helped a great deal.  Since then a regular visit to the frame shop reveals that the same structure scheme, with a few variations, is still in use.

I am concerned someone is going to hurt themselves by improper support and would hate for it to happen to any GURU.

I have been supporting the rear on the part of the frame that the hitch mounts to just under the rear of the engine.Will I need syrup poured on me at some point(pancake)?