08/05/2025
If we had a dollar for every time we were asked what a millwright does, well you know how the rest of that saying goes... But the best way we can describe what we do is by saying that we usually get asked to do things that the majority of other people either don't know how to do, or have never heard of before. This year we were given the opportunity to help with a new building expansion at Northeastern Junior College in Sterling, Colorado, but not in a way that most people would think. Normally when people think of building additions off the top of their heads, they think of typical doors, windows, plumbing, electrical, dirt-work, concrete and obviously the building itself, right?
Well, what about flood barriers or grout-filled walk-doors to prevent flood water at every entrance? No? Well, if you havenโt heard about that before, its some pretty amazing technology that keeps your building dry inside when the water levels are going up outside. And they all work without the use of electricity.
Thanks to Buildings by Design, we had the opportunity to install the following:
PS Industries Aqua Trigger Automatic Flip-Up Flood Barriers:
9 - 16โ long flood barriers to protect overhead garage doors
2 - 12โ long flood barriers to protect storefront doors
1 - 30โ long beast of a flood barrier to protect an aviation style door
Each installation included fabrication and installation of shims under hinge side of the barrier, setting and anchoring of barrier, casting each barrier in 5,000 psi concrete and filling the back stop jambs full of concrete.
PS Industries Hydro 1 Pedestrian Flood Doors:
7 - Single doors
2 - Double doors
To say these arenโt your standard walk doors is an understatement. The single doors weigh over 330 lbs. and the doubles weigh over 730 lbs. Once each jamb and door assembly is in place anchors were added to the concrete stem wall every 6โ along the vertical height and screws were added to the metal building every 6โ of the remaining vertical height. Next, closing arms were installed and the jambs and thresholds were sealed 100% on all sides to ensure water tightness. And finally every jamb was grouted to 6โ above flood water level.
Once all flood testing was completed, the gates and doors were commissioned and are now in use at the new facility. There were definitely some hurdles to overcome on this project, but in those moments we did what we do best - put our heads together to figure out solutions and kept on making progress. It was a great project and we are happy to have been part of it!
In the videos you will see our flood tests of one of the 12โ Aqua Trigger Flood Barriers as well the 30โ Aqua Trigger Flood Barrier. Inside these barriers there are small floats attached to deployment arms. Once the flood water reaches a certain level, the floats rise, activating the deployment arms which raise the barrier.
If you have any questions, or are curious about installation of flood barriers or flood doors, feel free to reach out to us!
Thanks again to Buildings By Design for the opportunity!