HPT

 

8.0 Construction Techniques:

8.2Construction Example:

For Example - the forward most cars would carry a large post-hole type excavator which would bore into soil, clay and even rock, removing dirt and rock to a hopper car for later distribution. The post hole would be as deep as necessary to meet the engineering requirements for each Grid Column with bell footings as required for sufficient support. A pile driver would install metal piles (AGrid Pilings@) where needed in extreme cases. After the Grid Train moves on a short distance, following cars will carry large round metal forms (AColumn Forms@) which would be placed in the Grid Column post-holes around the Grid Pilings. The next car would be equipped with a crane and place a pre-manufactured reinforcing structure inside the Column Forms. Concrete would then be poured by the next car or cars after being properly mixed (on site) from raw materials. Then, an adjustable metal shim plate (AShim Plate@) with deep spikes would be set into the wet concrete at the top of the Grid Column. Apparatus on following cars will restore the terrain and hydro-seed where necessary. A short distance back, a second series of Grid Train cars would arrive at a Grid Column well after the poured concrete has sufficiently hardened. The second Construction Train removes the Column Forms, adjusts the Shim Plate and sets the Grid Beam to design height and slant parameters. The Grid wiring bundle and electrical propulsion contacts are then attached to the Grid Beam. Stage III applications will be substantially complete at this stage of construction, however, Stage I and II applications will require a further (near) seamless cover for the Grid Beam which will serve as the Grid=s friction surface. The seamless cover will be as long as the (then current) manufacturing techniques will allow, preventing noise and vibration inside Grid vehicles at connection points or seams.