Hi. I have a party wall agreements with my neighbours. I live in a semi and the rsj between our house ground floor has been cut away on their side and a new bigger one is now resting on what is left of the original rsj. Two bricks divide our houses and they have definitely cut further than one. I have the surveyor visiting tomorrow to look at the crack that has appeared. I do understand that they will repair this but my concern is the long term outlook. Their new steel is much bigger as they also did a loft extension.