hand finishing is needed along the edges of the drying concrete
finishing is needed for the drying concrete floor.
concrete is in place and the floor starts drying rapidly. Further
smoothing of the top of the floor with a power trowel will ensure
a perfect finish.
completion of the first floor section, the second section
sections are flooded to improve the curing process of the
concrete. Note that the "W"-shaped (from left to right
in this picture) floor perfectly contains the water on top of it.
Later, small vertical flaps will be installed to allow for an
irrigation depth of at least one inch.
drill with a diamond tipped hole saw is used to drill holes
through the concrete. The holes are positioned directly above the
nutrient solution distribution pipes. These holes allow the
nutrient solution to be pumped onto and drained from the floor.
Water is used as lubricant for the drill.
a diamond tipped hole saw used to drill holes through the
One and a
half inch holes are drilled through the concrete and into the
nutrient solution distribution system.
View of various components of the environment control system (5-30-01).
View of the roof segments almost completely opened (7-15-01).