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Providing A Home For A St. Louis Hero With PERI DUO Formwork

Project data

Location: Rock Hill, Missouri, United States

PERI teamed up with McCarthy and the St. Louis Community to support building a home for a police officer tragically injured in the line of duty.

On April 8, 2010, Mathew Crosby, former Rock Hill Police Officer, was shot while responding to the desperate call from a woman caught in a domestic violence case, leaving him paralyzed from the waist down.

PERI had been contacted by McCarthy to get involved in the St. Louis community effort led by The Crosby Crew and Schaub & Srote Architects to build a home for Officer Crosby, who over the years, has been residing in rental homes and endured many surgeries, setbacks, and struggles since he was tragically injured.

McCarthy is donating the labor and concrete for the foundation and PERI is donating the formwork. This is the first time McCarthy uses PERI’s handset formwork system DUO on a residential foundation. We asked McCarthy for some feedback and their experience using DUO and captured it on camera.

Watch the full testimonial video on YouTube

PERI is honored to work on this project with McCarthy and thanks all the men and women of the police department for their service. For more information and to help visit


Handset concrete forms for residential foundation


McCarthy Concrete

Customer's benefit

Lightweight handset concrete forms reduce labor needed and increase productivity.

Contact PERI for your next concrete project

Mario Cirio
General Foreman

The main advantages of DUO are the lightweight, the strength, the rate of pour they will withstand, the engineering - you can use the outside corners for inside corners and vice versa - it's a very easy system to work with. You can stack the panels on top of eachother and then stand them up. With [a competitor] panel, it would be a lot more work to do that, probably be a lot more dangerous and a lot more fatigue.

Clinton White
Project Superintendent

It's lightweight, not just the panel itself, the hardware; you don't need many tools to put the hardware on, you push it in with your hand, there is no beating on it with a hammer where at the end of the day your elbow or your wrist is hurting, it's pretty slick how it all snaps together. With this you don't need that crane, you don't need that operator, all that adds up fast. If you're doing a heavier metal or wood frame panel, you're going to need that extra guy. Here you don't need it because it's lightweight. (...) You don't need to be a rocket scientist to figure it out. It all goes together and clamps together easily.

PERI solution

PERI DUO Lightweight Handset Formwork System

PERI systems in use