The newly developed anchorage head and bearing plate models are specifically designed to suit tendon end zones located at column bases or beam-to-column intersections — areas where installation is particularly challenging. These locations typically do not provide sufficient space for standard tendon configurations, such as 5-strand bundles using 15.24 mm strands. The new anchorage system allows for more flexible and practical installation in these tight, structurally dense zones. (See illustrative image below.)

The column reinforcement spacing was adjusted to accommodate the installation of stressing anchor heads using other common anchorage systems currently available on the market.	Beam enlarged to allow for anchorage plate placement

In the past, installing stressing anchor heads at these specialized positions was relatively complex, often requiring adjustments to the column reinforcement spacing or widening of beams to accommodate bearing plate installation. With conventional anchorage systems currently available on the market, the typical anchor pocket width ranges from 260 mm to 300 mm. However, with PMEC’s newly developed anchorage head, the pocket width has been significantly reduced to just 200–210 mm, offering a more compact and construction-friendly solution.

Column base locations were executed using PMEC’s newly developed anchorage system.	Anchor Pocket Width with PMEC Anchorage Head

With a commitment to continuous innovation and service excellence in both design and construction, PMEC has successfully developed and applied a new anchorage head model. This upgraded design fully complies with technical standards while also addressing the practical challenges of installation in complex or space-constrained structural locations. By utilizing this new anchorage system, PMEC has significantly minimized the need for structural adjustments—such as modifying reinforcement layouts or enlarging beam dimensions—typically required to accommodate conventional stressing heads. This advancement enhances construction efficiency and structural coordination on site.

Cable Tensioning Mockup at Project Site

Featuring a rounded trapezoidal configuration, the newly designed anchorage system includes two upper cable ducts (2 holes) and three lower cable ducts (3 holes). This arrangement significantly reduces the overall width of the anchorage head in the horizontal direction, thereby minimizing the required pocket width in the concrete. As a result, it eliminates the need for reinforcement modifications in structurally sensitive or congested zones. Moreover, the dual-layer cable grouping—top and bottom—facilitates a more streamlined and convenient cable tensioning process on site. PMEC’s newly developed anchorage head and bearing plate have been formally registered with the Vietnam Intellectual Property Office and are currently under review for the issuance of an Industrial Design Patent.