Next Tee Form

Heavy-Duty Double Tee Beam Designed for Accelerated Bridge Construction

SELF-STRESSING NEXT TEE FORM

SELF-STRESSING NEXT TEE FORM

Developed as an economical solution for mid span bridge replacement, the NEXT Tee (North East Extreme Tee) is shaped like a typical double tee, but from the perspective of a form designer, that's where the similarities end.

The NEXT Tee is a bridge beam designed for self-stressing up to 2200 kips, whereas a heavily stressed 12-foot double tee form may have a typical capacity of 1200 kips. The beam has deck strand and strand densely positioned in each stem. In addition, the NEXT Tee form is designed to accommodate different stem depths from 24 to 36 inches. The varying stem depths are easily accomplished with stem fillers, however, as stem fillers are used to decrease stem depths, the center of gravity moves up. Steel compression bars and extra skin stiffeners are used to resist the prestress load at varying depths at the stems of the form. Magnetic side rails are used with the NEXT Tee to adjust for different beam widths.

Due to the capacity and concentration of strand at each stem depth, extra thick jacking plates are used. The jacking plates for the NEXT Tee weigh 3,000 pounds each whereas the jacking plates on a typical double tee weigh about 400 pounds. The finished form weighs almost 1,000 pounds per foot. We typically split the form at centerline for both shipping and handling considerations.

SELF-STRESSING NEXT TEE FORM

Heavy compression bars resist the load at the stems.

SELF-STRESSING NEXT TEE FORM

Twelve-inch jacking plates are required.

SELF-STRESSING NEXT TEE FORM

The form is typically split at centerline for shipping and handling.