DYWIDAG Multistrand Post-Tensioning System - Coupler Types

Multistrand Post-Tensioning System

Available Coupler Types


Anchorage Type Tendon Type 59... (0.5" system)
59 ... 01 02 03 04 05 06 07 08 09 12 15 20 27
 Coupler D                        
 Other size tendons on request
Anchorage Type Tendon Type 68... (0.6" system)
68 ... 01 02 03 04 05 06 07 08 09 12 15 19 27
Coupler M and ME
 (Floating Anchorage) 		               
Coupler P              
 Coupler D                        
 Other size tendons on request

Rotation symmetric structures (water tanks, digestor tanks, large pipes or dome shells) that require circumferential Post-Tensioning are the principal applications for the floating coupler M/ME. The tendon anchorage consists of an anchorage block with wedge holes on both sides to accept bare or greased and sheathed strands. The strands actually overlap in the block and use the belt-buckle principle. The ring-tendon is very compact and requires a very small pocket only.
stressing anchorage dead end anchorage
accessible not accessible
yes yes no
ultimate load [kips/kN]
from to
62/279 738/3,348
pocket former for each anchorage system on request M anchorage available in 2, 4, 6, 8 and 12-0.6 Versions
Coupler P consists of a multiplane anchor body, the standard wedge plate and a coupler ring that accepts the continuing strands with swaged anchorages instead of wedges. For similar applications, both coupler R and P can be installed alternatively.
fixed coupler floating coupler
yes no
ultimate load [kips/kN] 
293/1,303 1,113/4,953



Coupler D

To lengthen unstressed tendons, e.g. in segmental bridge construction, coupler D is put to use. The splice chuck consists of two spring-loaded wedges that connect two strands individually.
fixed coupler floating coupler
no yes
ultimate load [kips/kN] 
58.6/261