useally true Pierre but you need some kind of protection from damage as well .
up northen area where it subject to frezzing some loading dock we have outside pit but we have second pit located in the building where the frost dont hit at all and that pit is lower than loading dock pit so the water can drain out and dont get frozen up and sump pump size can varies alot depending how big the loading dock and numbers of door is the last one i did work not too long ago have 7 1/2 hp sump pump it really pump alot of water thru pretty good
Merci , Marc
