In this video, the speaker explains how polyurethane foam can be used to lift concrete slabs by injecting the material beneath horizontal slabs. The foam can support thousands of pounds per square foot, making it suitable for lifting everyday structures such as patios, driveways, walkways, and commercial warehouse floors. The speaker also outlines limitations: hollow precast steps and narrow, deep foundation walls are generally unsuitable for foam lifting due to their structural characteristics and localized heavy loads, requiring alternative repair methods.
Chapters
What can we lift and how much weight can we lift with polyurethane foam? Well, the process of concrete lifting itself, mainly we're dealing with concrete slabs. So you have your horizontal slab and you're injecting material underneath of it. Now we can lift those no problem, and those entail your everyday, your patios, your driveways, your walkways, commercial warehouse floors, stuff like that. Like this foam has the potential to lift thousands and thousands of pounds per square foot. Examples of things that we can't lift might It's going to depend on the structure type itself. So different types of steps, like precast step that is fabricated in a shop and then brought to site to mount onto, you know, a commercial building or typically a residential home, those are very hollow all throughout and underneath. That is not necessarily an ideal structure to be lifted with polyurethane foam just because of its structure type. There's very limited things that we can do to help in those types of situations. Another example of things that is not necessarily able to be lifted Especially with foam. It doesn't really matter the material here. Again, the structure type is like foundation walls because they're very narrow structures. They're very long, they're very deep in there, and they're very heavy in a localized point. It doesn't quite make sense to, to be able to lift that by means of pumping material underneath it. Those have to be addressed differently.
