There are many dangers on and around building sites so many in fact that to really be safe all you have to remember is one rule:
Never go on a building site!

Sometimes they are so big that they may not see you until it is too late!

You don't know how safe they are, bricks and pipes may collapse and fall in top of you, and sand could have glass or other sharp things hidden inside it!

They may look like big toys, but they are extremely dangerous and can cause serious damage!