Numerous established structures in the city encounter foundation difficulties due to elements like subsidence , ground composition, and age . Base reinforcement is a a niche building process used to improve the support strength of a building's present foundation . This procedure typically involves excavating under the existing base and building a

Toronto’s variable soil conditions often lead to foundation instability, requiring specialized underpinning techniques . Underpinning involves strengthening existing foundations or creating new ones to improve their stability capacity. Common techniques include mini-piles , concrete lifting , and sprayed concrete applications, all meticulously as