About CorTek

CorTek, manufactured by Nucor Vulcraft/Verco Group, is a pre-fabricated, stay-in-place modular form system that is custom engineered to simplify and accelerate the construction of reinforced concrete stair and elevator core structures. Our service core construction system is an example of how this method of construction is already transforming the construction methodologies of today.  And, as a system produced by Nucor Vulcraft/Verco Group, you can be assured that it has the full support of Nucor behind it.

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Vulcraft-VercoGroup

Reinventing Vertical Reinforced Cores

Conventional vertical reinforced concrete shear cores used for the primary lateral structural support have always presented challenges for building construction projects. Long and unpredictable onsite construction timelines are usually required prior to commencement of the main building framing. Also, quality issues frequently result from concrete dimensional tolerance variances, and improperly located steel embed plates necessary to receive steel framing connections to the shear walls. In addition, jobsite safety is adversely affected due to the fall exposure risk created by the conventional construction approach for these concrete structures.

CorTek Advanced Building Systems
Conventional Vertical Reinforced Concrete Shear Cores

What Is CorTek?

The CorTek Core System is a load bearing form system constructed with vertical and horizontal structural elements that are designed to support construction loads, and allow modularization of the form system. This structural system allows for support of metal stair flights and landings, structural framing, scaffolding, personnel, and other construction loads. The forms are to stay-in-place and do not require stripping adding two inches to the shear wall width. The factory is currently tooled to produce forms with finished walls, after concrete placement, structurally equivalent to 8″ to 12″ thick cast-in-place concrete walls.

This innovative construction approach incorporates the higher level of quality and efficiency provided by a specialized factory manufacturing environment, thereby reducing jobsite labor resource and schedule needs. Also a higher level of jobsite safety is provided through the elimination of the fall hazards inherent in vertical concrete formwork construction methods.

CorTek celebrates the art and craftsmanship of building. Our dedicated steel fabrication division specializes in architectural metals and thrives on challenging design. We enjoy architecture and take pride in the abilities of our steel craftsman to bring reality from design.

Nucor Vulcraft/Verco Group

Better Partners. Better Products. Better Outcomes.

Documentation

Demonstrates the CorTek service core construction system as the faster, cost competitive, safer and higher quality alternative to conventional cast-in-place, pre-cast and masonry methods of core construction.

Introductory Slide Deck

Demonstrates the CorTek™ service core construction system as the faster, cost competitive, safer and higher quality alternative to conventional cast-in-place, pre cast and masonry methods of core construction.

CorTek Standard Details

Explains how the CorTek stay-in-place modular form system is engineered to simplify and accelerate the construction of reinforced concrete stair and elevator core structures.

Standard Specification Language

Contains Guide Specification in accordance with the SI Construction Specifications Practice Guide, including Master Format, Section Format and Page Format.

Homewood Suites Construction Slideshow

A photo montage of the construction of the Homewood Suites using the CorTek Advanced Building System.