You can have internal corners. It is something that we try to avoid. If we have drainage drawings, we will always try and look whether we can go deeper to avoid them. But they can be done. It just creates weaker points, if they can be avoided, then it’s best to. However, with our heat weld engineers, they can still make sure that it’s heat welded and watertight.
In terms of how flexible tanks are constructed using geocellular crates, you can have any design. Obviously, the regular shapes are a lot easier for the contractors to excavate, because there’s nothing worse when you have different shaped tanks with lot of internal corners. We understand sometimes it has to be done, with all the new works that are going on, especially when they’re in crowded areas, you have to avoid certain things and pile caps. When that happens, you don’t have any option. We will always try and put forward the best design, but they have dimensions that you have to stick to, you cannot cut crates. We would always put forward an alternative to what’s been specified. But, there is no limit, it’s just whether we can make it a better solution or not.
