Support sagging floor in crawlspace in Welland, ON

Agnes has a home in Welland,On with a nasty crawlspace. The floor support in the home is very poor. The supports were made up of pieces of wood stacked on top of each other.  Omni basement Systems replaced the supports with the Smartjacks. The Smartjacks are strong, galvanized steel support jacks that sit on a very large base plate. They are also fully adjustable.