Um... I'm sorry Jim, but I feel the following just needs be said. This with the potential that someone will look at that photo/s and take from it how easy such work can be ( it can be ) and how little tooling & equipment ( not so much ) can be gotten by with...

I've posted here on the forum several times about safe and proven technique in Jacking & Shoring ( they go hand in hand ) because the potential for things going sideways ( both figuratively & literally ) is great, and with that, so is the potential for harm, both to the building, and those people in or near it.

Jacking & Shoring should be looked at in much the same way as tree felling. Every potential should be weighed and only then, after careful review with escape routes planned and precautions taken, should the task be started.

When I look at those photos, I see a collection of what not to do – Jacking posts are best avoided, sometimes circumstance does demand their use, and when used, they should be kept short and certainly not built from a just thrown together stack of “what you have” Hydraulic jacks, while valuable and appropriate tools (good ones of recognized known name manufacture) should not be used in conjunction with jacking posts, this is the place for screw jacks. When hydraulic jacks are used they should be followed (by fractions of an inch not their ram length) by shimmed off cribs or structural staging, and they should be used with steel jacking plates. This is not simply to prevent marring of the framing, but to serve as a tool, a visual safety check one constantly refers to to tell if things are jacking and settling (the crib or the post and the floor or the ground it is bedded on) properly. The jack on top of its without question plumb base, should be shimmed so that its ram has full and complete bearing with the steel plate as you begin to engage the jack with its load and watched as you jack. Any change in that relationship helps tell you what is going on around you, and if need be (this happening more often than not) you shim off and then re-bed the jack. If you are simply driving and crushing the ram up into some random cutoff (as is pictured) this incredibly valuable barometer is lost to you.

All such relationships should be watched as jacking continues (as example that open between the lower jacking post and that flustercluck of cut-offs its stands on should be shimmed of and watched, and perhaps whiskey sticks should be bungeed to the jacking posts - Sorry, but this I think greatly helps drive home my point ) It should always be remembered when jacking a wooden structure, that you are potentially bending something, and should that be the case you are storing a huge amount of energy. A jack can spit out at incredible velocity, should that happen you don't want to be in its path or anything else set in motion (the jacking post, the building) when it does.

It can be done in lots of ways. This begins with careful planning, and a survey of how the building is carrying its loads as a compromised structure, and not just how to rig the localized repair of a sub-system/assembly.

Being your best, begins with being careful.