Techniques/ technologies
An attempt was made to achieve 20 to 30% saving in the cost.
Roof: fudo, i.e. funicular brick shell, made using standard steel formwork of 12' x 12'and plastered with cement mortar. He calls it a ‘48 hour' roof as it can be loaded within 48 hours after its construction. The beam to receive the fudos is very interestingly designed. First a precast rcc bedplate about 2 inches thick is placed in position above the prop. Then, the reinforcement welded in a triangular arrangement to the links is placed over the bedplate like a precast member, so as to simplify the process of binding the reinforcement. The beam is then concreted in a triangular shape ready to receive the brick fudo.
Brackets in the form of corbelled brickwork were introduced at wall junction to receive the ceiling and at the lintel level to accommodate the precast members (chajjas) in order to increase the bearing area.
Precast bed block were introduced in the school building to receive the beams.
Materials
Initially the brick were brought form an area called Perwada, near BCT. But due to the inferior quality of the bricks they were later purchased from an area called Nujvid, near Vijaywada. The factory price of these wire-cut bricks was 2.5 rupees a module but due to transport the cost doubled to 5 rupees a module.
There was a Fal-g block-making unit set up in the campus. The fly ash was bought from Hindustan polymers in Rajamundri. |
