Structural Steel + Precast

Build with certainty., precision., speed., confidence.
Not hope.

The Girder-Slab® system delivers what conventional construction can't: predictable cost, accelerated schedule, and optimized floor counts — by design.


18%

Verified all-in savings

400+

Completed buildings

4 mo.

Schedule reduction

 

Girder-Slab® construction — aerial view
18% All-in savings
verified
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The Industry Problem

Construction is broken.
Your project pays the price.

 

The construction industry has declined by every objective measure since 1970. For developers and project teams, this is a direct threat to project viability.

69
%

of projects finish more than 10% over budget — with fat-tailed risk meaning bad projects run 100%+ over.

-KPMG Global Construction Survey

30
%

decline in U.S. construction productivity since 1970

-Goldman Sachs Research 2025

78
%

of firms report at least one delayed project in the past year

-AGC/NCCER 2025 Workforce Survey

The Girder-Slab® system — cutaway showing the D-Beam® girder, hollow-core slab, and grout assembly
18″–24″ Floor depth
saved per level
The Girder-Slab® System

Steel & Precast.
Reimagined.

The D-Beam® girder sits within the plane of the floor assembly — not below it. No formwork. No shoring. No above-grade concrete pours. Single-trade erection.

  • Adds 2+ floors at permitted height — permanent, recurring revenue
  • Single trade (ironworkers) — no sequencing conflicts
  • No wet concrete above grade — weather off the critical path
  • No proprietary vendors — standard competitive bidding
  • 73% repeat use rate among architects & engineers
Learn More About the System →
What You're Actually Buying

You're not buying a system.
You're buying predictability.

01

Cost Certainty

Conventional construction carries compounding tail risk. Girder-Slab® eliminates those sources by design. Verified: 17–18% all-in savings across completed buildings.

02

Schedule Control

A 4-month schedule reduction advances revenue, cuts carrying costs, and compresses labor market exposure — simultaneously. These are verified outcomes, not projections.

03

Floor Optimization

18–24″ of depth saved per floor adds leasable floors at permitted height. Troy Boston gained two floors that were physically impossible with conventional steel.

Built for Your Role

Whatever your seat
at the table —

"I need projects to finish on time, on budget, every time."

Girder-Slab® isn't a premium option — in high-cost urban markets it's risk management. The conventional alternative carries compounding tail risk that can erase the profit of several successful projects.

  • 18% verified all-in savings vs. conventional steel + concrete
  • 4-month schedule reduction advances revenue, cuts carry costs
  • Floor-count optimization at permitted height = permanent revenue
  • Weather eliminated from the critical path
Start a Project →
Commercial real estate developer reviewing Girder-Slab® floor system plans

"Give me something that works with how we design buildings."

ASD and LRFD compatible. No proprietary analysis software. CS3 provides free engineering consultation throughout design — tools, details, and spec language at no cost to the project.

  • ASD (AISC 9th) and LRFD (AISC 14th) fully supported
  • D-Beam® Girder Calculator — free, live sizing tool
  • Standard CAD details + specification language provided
  • UL K912 fire rating — 2-hour and 3-hour restrained assemblies
Engineering Resources →
Structural engineer evaluating D-Beam® girder specifications for a multifamily project

"I need a structure my crews can actually build on schedule."

One trade. No wet concrete above grade. No shoring stack gating your schedule. Steel erection proceeds above planked floors — breaking the sequential dependency that makes conventional pours so punishing.

  • Single trade erection — ironworkers only, no sequencing conflicts
  • No shoring — no 3-floor shoring stack blocking progress below
  • No 28-day cure wait — upper floors proceed immediately
  • MEP follows floor-by-floor — faster access, fewer conflicts
See Why It Works →
General contractor crew installing hollow-core plank on a Girder-Slab® job site

"Show me what the floor-to-floor numbers actually mean for my design."

18–24″ of additional floor-to-floor height per level is design real estate. More ceiling height at the same footprint, more floors at the same permitted envelope, or both. CS3 works directly with the design team.

  • 2+ additional floors at permitted height — Troy Boston case study
  • Greater ceiling heights at same envelope = premium unit positioning
  • STC 55+ without carpet — IIC meets code with standard finishes
  • All demising walls non-load bearing — full flexibility
View Completed Projects →
Architect collaborating on building design using the Girder-Slab® floor system
Free Project Evaluation

Start with a
free evaluation.

CS3 works directly with developers, engineers, and construction teams to evaluate project fit — at no cost to the project.