Abstract: A small-scale hydroelectric generator has a micro-hydro axial-flow turbine mounted in a lower end of a penstock, preferrably of the siphon type, through which water is diverted from an intake basin. The turbine comprises a stator section formed with an axial core providing an annular passageway having an outlet end in close proximity to a rotor of a coaxial adjacent rotor section. The blades of the rotor have a length equal to the internal radius of the passageway. A plurality of flaps are arranged in an expandable circle between the stator section and rotor. A float mechanism located in the intake basin follows the water level and controls the extended positions of the flaps reducing the water flow through the penstock in a predetermined relation to the water level. The annular passageway has fixed vanes directing the stream of water in a helical swirling motion of predetermined pitch to impinge upon the blades which are disposed to receive the stream at an optimum angle of 90.degree. .

Abstract: A tripling or more in the production rate of precast concrete building units utilizing reusable mold forms is achieved by casting the units vertically on a wheeled base between separable vertical mold forms. The partially cured poured concrete unit is horizontally transported on the wheeled base from between the separated molds to complete the curing independently thereof, the forms being immediately serviceable with another wheeled base for molding another unit.A building is erected on a concrete slab foundation using a plurality of precast concrete units in the form of L-shaped walls positioned as corner structure and spaced intermediate exterior wall elements and as interior partitions and roof supports.

Abstract: A tripling or more in the production rate of precast concrete building units utilizing reusable mold forms is achieved by casting the units vertically on a wheeled base between separable vertical mold forms. The partially cured poured concrete unit is horizontally transported on the wheeled base from between the separated molds to complete the curing independently thereof, the forms being immediately serviceable with another wheeled base for molding another unit.A building is erected on a concrete slab foundation using a plurality of precast concrete units in the form of L-shaped walls positioned as corner structure and spaced intermediate exterior wall elements and as interior partitions and roof supports.