Type of Building: The  number  of floors has direct effect on the  which  should be used.  Single  story building  the most  common  type  being  built today  lends  themselves to the use  of  lift  trucks  and conveyors.  They also eliminate  the need  for elevators which  often  prove  to be a bottleneck in material handling. Multi stored buildings however find  the selves to the use of  gravity flow with pipelines and shutters which  is the most  economical  method of materials  handling.