Our first albaniel turned out to be fast but very little thought was going into what he was doing. There were not enough support columns (castillos) for our spans and bathrooms were not planned. We added 7 new columns - 5 down the middle and two on either side of the large front room.
fotos are of the reinforced 'header' (dala) that goes above the block, the top of which will be the floor level. I rented the wood for forms but will buy some next time as we'll use them multiple times.