Brick blocks or columns are not the effective solution to fix problems of unstable foundations in the crawl space.
Actually if the columns are too far apart, the beams can become overloaded and bend between the columns. When the beams bend, the floor above it bends too.
In addition, these columns may collapse due to weak soil. If so, there will be a gap between the top of the column and the bottom of the beam it was supporting.
As a result, the beam will flex and the floor will do the same.
Finally, as the crawl space is often damp, the beams weaken and the wood rots. Thus, they will no longer be able to support the weight of the house.
The solution is simple; SmartJack pillars and galvanized steel PowerBrace beams will stabilize your foundations permanently and lift them to their original position immediately.
Below you can see more details about this job in Longueil, Qc