The main problem with a hoist crane is the need for large counter weights. There will be an allocated zone for the counter weight that can be picked up from the disaster area. A counter weight is only needed when lifting over 650kg (711kg actual); in a case where over 1000kg (up to 1200kg) is lifted a counter weight of 600kg is needed. Iron counter weights will be supplied but debris can be used. The table below shows the counter weight required when lifting larger masses:
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