Roof anchors must comply with the safety standards. These stipulate that each anchor must be able to withstand a static load of 1 ton (907 kg) and a dynamic load of 220 lbs (100 kg) for a fall of 2.5 metres for one person. The anchor point should also be inspected by a competent person before each use, for added safety. Depending on the nature of the work, the type of industry, and the structure of the building, different types of roof anchors can be used. You can use a permanent or temporary roof anchor point. The former is designed to remain permanently on a given surface and become an integral part of the building, while the latter is useful for short periods. Temporary anchors are quicker and easier to install. There are also rigid roof anchors with a single eye, or ring, and mobile anchors for cables or rails. These allow the user to move along the entire length of the system using a glider or a fall-arrest trolley.