It sounds like a typical "floor filler" slab system that is/was used in Europe. The hollow clay tile (or concrete block, concrete/wood fiber, AAC, etc.) are used to decrease the weight and provide a flat ceiling for finishing. They are still used in many reisdential projects and there are EU standards for the materials for the fillers.
The walls to the concourse elevation are of facing brick with stone dressings including a large stone cornice at second floor level. The fireproof floors consisted of Frazzi hollow unreinforced clay blocks spanning between the lower flanges of steel beams. Timber joists were arranged to span on to the steel beams to support floor boards.
Hollow clay pots (or tiles) were first used in the early part of the 20th century as a means of constructing fire-proof floors and reducing some of the dead loads of solid construction. Early systems relied in some cases upon iron reinforcement bars laid between the blocks, while...
Feb 6, 2012 The building floor slab was constructed using clay brick hollow pot as steel structural reinforcement, concrete mix should be required to be【Get Price】 Evolution of Building Elements A stronger foundation can be obtained in less depth than when concrete alone is used".
Jun , Hollow clay pot slabs are usually constructed with fewer concrete and reinforcement compare with solid slab Hollow blocks are used to fill portions of the slab thickness this results in deeper the amount of concrete and hence the weight of the slab Hollow floors, which floor system in Office buildings,