EA said that Tetris Blockout
features three different play modes, classic Marathon, 20 Planes and race-the-clock Ultra.
Depending on the success of casting the WIM blockouts
into the panels, other unique applications may be possible down the road.
He asked for support from admixture supplier Master Builders in designing a concrete mix, and they worked with Hanson personnel to produce SCC that filled completely around the blockouts
for windows and doors, and provided proper cover for the reinforcement without any internal or external vibration.
Working with a small crew of about three helpers, Johnson tackles step one, which is to build the 2X framing blockouts
for doors, windows, and other penetrations.
for the sign, vending stations and access door were especially challenging; they required the form pieces to be modeled in Autodesk Inventor to create the complex steel patterns that would produce precisely sized openings.
During precasting, blockouts
are used so that there is no concrete over the grid in the areas that will be over floorbeams and stringers.
For example, the research team thought chamfered [grooved] blockouts
would help the rail go under and capture the car better.
Quick-setting, non-shrink grout was selected for shear connector blockouts
and haunches, while Silikal polymer concrete (Sika Corporation, Lyndhurst, New Jersey) was specified for the joints between the precast panels.