You never carry to much cribbing. Cribbing is a disposable item and we have followed the USar teams in switching to a soft wood. I have had hardwoods fail without warning in lifting evolutions. The Rescue Squad carries Ninety-six (96) 4"x4"x18" , Twenty-Four (24) 4"x4"x18" USAR wedges, Twenty-four (24) 2"x4"x18" Douglas Fir. All in Milk crates, each with eight (8) 4x4s, two (2) wedges and two (2) 2x4s - easy to carry - a box crib in each one. We also carry twelve (12) 6"x6"x24" Douglas Fir and Two (2) 6"X6" wedges. Four (4) 2"x4"x96", Ten (10) 4"x4"x96", Six (6) 4"x4"x144", Four (4) 2"x12"x144" for extra buttress stabilization or shoring and for uprights for trench panels. Six (6) sheets of 1/2" plywood 4'x8' and Four (4) 4'x8' Fin Form panels. There are eight (8) Step chocks carries and 300 extra 4"x4"x18" and wedges stored at the station.

How much do we carry ? -- not enough

I think that's the golden answer! You think you have enought till the next call where you don't... ;-)

In regards to cribbing height, I know sometimes it depends who you speak to. With the hight of the cribbing, is is still 3x the width of the base?