Low Profile Concrete Slab on Elevated Deck

Adjustable Screed Setup Using Powder-Actuated Threaded Studs

Low-profile elevated slabs leave little room for traditional support systems.

On this elevated metal deck placement, a new approach was used to create an adjustable, low-clearance screed support configuration. The objective was to establish precise elevation control without introducing bulky components that interfere with deck geometry.

The solution combined MAKO FinCaps with Hilti powder-actuated threaded studs.

Hilti threaded studs were shot directly into the metal deck using a powder-actuated fastening system. A threaded coupling nut was then inserted into the MAKO FinCap, creating a fast and mechanically adjustable screed support.

This configuration provided:

  • Low-profile elevation control

  • Direct anchoring to metal deck

  • Rapid installation using powder-actuated fastening

  • Mechanical adjustability using the MAKO driver

  • Elimination of improvised shimming

Once the threaded studs were installed, the FinCaps could be quickly threaded into position. Using the MAKO driver, crews dialed in precise height adjustments without slowing production.

On elevated decks where slab depth is limited, space efficiency and setup speed are critical. Traditional support systems can become cumbersome or time-consuming. The threaded stud and FinCap combination created a streamlined method for establishing screed rail elevation with minimal material and minimal profile.

Because the system adjusts mechanically, fine elevation corrections were made quickly, improving setup accuracy and reducing time spent resetting supports.

The result was a fast, adjustable, low-profile screed support method designed specifically for elevated metal deck applications.

When slab thickness is limited but precision remains essential, the MAKO FinCap + powder-actuated threaded stud configuration provides a compact, field-ready solution.

Low clearance.
Fast adjustment.
Mechanical precision.