Pipe hand railing

This is a relatively simple pipe hand railing design using 1.5 inch  coper pipe. The end caps and vertical portion of pipe were soldered together then soldered to the sheet metal cap. They were then lag screwed and caulked down with fender washers inside the pipe to add more strength to the hold downs. The rest of the railing was then built in place.  The spaces in the railing are there to allow for  expansion of the copper.  I feared that if done in one continuous piece the railing would pull itself free of the sheet metal cap and wall.