Tulane is using a unique product on the North, West and South sides of the stadium (about 16,000 of the seats).
It's called the Dant Clayton Hybrid Precast System, and it was first offered in 2010. The risers are part concrete, and part steel. The horizontal planks (floor) are concrete, and the vertical planks are steel.
Here's a video. Dant Clayton markets it as "A concrete stadium experience on a pre-engineered bleacher budget."
Tulane is the first college football stadium to use the product.
Here's a
press release with more detail.
Here's a picture of what it looks like:
Dant Clayton previously worked on Tulane's Turchin Stadium for baseball, as well as the Florida Atlantic stadium in Boca Raton. It provided the steel bleecher portion (in one end zone) of BBVA Compass Stadium in Houston where Houston and Memphis just played. Dant Clayton provided the grandstand system, aluminum bleacher seating and a custom press box for Brighthouse Stadium at UCF. They installed 37,000 chairback seats at PapaJohns. They did the aluminum end zone bleachers at Lane Stadium at Virginia Tech. They installed the bleachers at Ohio Stadium at Ohio St, Rutgers Stadium and OU's Gaylord Family Stadium
I'll say this. I like that Dant Clayton hybrid product better than the schools that went 100% steel bleacher.