深く掘削しなければならないなど、土が崩れる可能性がある場合は、 山留め(土留め)を設けなければなりません。 You'll want to find the correct case study help service service provider in order to avoid any complications. We now have all the mandatory permits to help college students With all the jobs. You can search for case study writing help without any problems from us. Check out https://jeffreyouxkb.blog2news.com/37189616/ivey-case-study-help-things-to-know-before-you-buy