The ground or foundation have to can supporting the weight of the scaffold and any type of tons likely to be placed on it. http://www.mercadolatinoinc.biz/__media__/js/netsoltrademark.php?d=Ezproxy.Cityu.EDU.Hk%2Flogin%3Furl%3Dhttps%3A%2F%2Fshoreditchscaffolding.co.uk