Method 2: Drilling holes within the concrete, and putting Hilti chemical for strong bonding. It is expensive as Hilti chemical is employed which is costly. This technique is adopted when we forgot to position extension bars before concreting. Dowel bars are typically fabricated from steel or other tough supplies, and https://font74061.ziblogs.com/27924810/not-known-facts-about-dowel-bars-in-footing