Early Victorian warehouses were built of brick with stone dressings typically up to six storeys tall with basements and steps to the front door. Fireproof construction was used towards the end of the century. They had loading bays with hydraulic wall cranes at the side or rear. Some traders built their own warehouses but others shared speculative developments that were built for multiple users. Watts Warehouse by Travis & Mangnall in the form of a Venetian palazzo, was built in 1856, the largest single-occupancy textile warehouse in Manchester .