Bonded Bar Post-Tensioning System

DYWIDAG Standard Bars

DYWIDAG Bar Post-Tensioning has been successfully used for more than 40 years in post-tensioned construction. It has evolved over time and has been optimized to enhance its performance and increase its competitiveness.

All accessories of the DYWIDAG Post-Tensioning System Using Bars are threaded providing a fast, simple and positive assembly. The threadability of the anchor nut also offers the advantage of adjusting the prestressing force in the tendon at any given time before the tendon is grouted.

DYWIDAG High Strength Bars are available in lengths of up to 30 m.

DYWIDAG Smooth Bar

The DYWIDAG Smooth Bar has threaded ends with a rolled-on thread. The threads are manufactured in the shop to the specifications of the customer. The rolled thread of the smooth bar results in a characteristic low seating loss and high fatigue resistance. This is the reason why the smooth bar is best used for very short tendons.

DYWIDAG THREADBAR ®

DYWIDAG THREADBAR ®s are hot-rolled in the steel mill and come with thread-like deformed ribs over the entire length of the bar. The bar can be cut anywhere and is instantly threadable without further preparation.

Technical Data
type   Smooth Bar THREADBAR ®
steel grade fp0.1k/fpk N/mm² 835/1030 1080/1230 835/1030 1080/1230 950/1050
diameter/type   32G 36C 26E 32E 36E 26D 32D 36D 26WR 32WR 36WR 40WR
diameter mm 32 36 26.5 32 36 26.5 32 36 26.5 32 36 40
nom. cross section area mm² 804 1018 551 804 1018 551 804 1020 551 804 1018 1257
weight kg/m 6.31 7.99 4.48 6.53 8.27 4.48 6.53 8.27 4.48 6.53 8.27 10.21
pitch mm 3 3 13.0 16.0 18.0 13.0 16.0 18.0 13.0 16.0 18.0 20.0
ultimate load fpk*A kN 828 1252 568 828 1,049 678 989 1,252 580 850 1,070 1,320
yield load fp0.1k*A kN 671 1,099 460 671 850 595 868 1,099 523 764 967 1,194
fatigue stress range    
steel (0.7 * fpk) N/mm² 180 180 180 180 180
nut/coupler 0,6 fpk N/mm² 98 98 98 78 78 80
bending    
elastic bending min. R m 19.50 12.10 16.20 19.50 21.90 8.90 10.75 12.10 9.70 11.70 13.20 14.70
cold bending min. R m 4.80 5.40 5.30 6.40 7.20 5.30 6.40 7.20 5.30 6.40 7.20 7.80
Values based on German Approval. Customizations acc. to different norms and concrete strengths applicable.