Phelan Pecos Center I & Hawes

Phelan Pecos Center I & Hawes 

Location: Arizona
Client: Next Level Steel
Project Type: Commercial – Industrial / Business Center
Scope: Steel Detailing for Roof Screen Wall Systems, Castellated Beams, Braced Frames, and Base Connections

Project Overview

Phelan Pecos Center I & Hawes is a large-scale commercial development featuring long-span roof framing and architecturally integrated screening systems. The project required precision detailing to accommodate extended structural runs, advanced beam configurations, and braced framing systems, all while maintaining constructability and fabrication efficiency.

Structures Online (SOL) provided comprehensive steel detailing services for this project, focusing on accurate modeling of long-span assemblies, coordination of roof framing systems, and fabrication-ready connection detailing. Advanced 3D modeling was essential to manage tolerances and alignment across the length and complexity of the structure.

Scope of Work

Roof Screen Wall System (610’-0” Long)
The project includes a 610-foot-long roof screen wall system supported on the roof framing. The assembly was modeled with accurately aligned vertical posts, continuous cladding panels, and diagonal support angles. All post-to-beam connections were coordinated to ensure structural stability, uniform panel alignment, and efficient fabrication. Special attention was given to cumulative tolerances across the long run to maintain straightness, consistent elevation, and smooth installation sequencing throughout the entire length.

D-Castellated Roof Beams
The roof framing utilizes D-castellated beams, formed by cutting and expanding standard rolled sections to create diamond-shaped web openings. This configuration increases structural depth and stiffness without additional steel weight while providing clear service routing paths. Using Tekla Structures, the castellated beams were parametrically modeled, including web openings, flange welds, stiffeners, reinforcement plates, and end connections to ensure fabrication feasibility and integration with the roof screen wall supports.

Fabricated Base Connection Assembly
This base connection was detailed as a fabricated steel pedestal assembly incorporating internal stiffeners and a built-up block configuration. Anchor bar extensions with hooked ends were accurately positioned and coordinated with the concrete foundation interface to ensure correct placement during installation. All bearing plates, stiffeners, welds, and fit-up tolerances were modeled to deliver a clean, fabrication-ready base assembly.

Braced Frame System
The braced frame assembly was fully modeled, including inclined brace members, vertical columns, and corresponding base connections. Each brace connection was detailed with precise end plate geometry, gusset arrangements, and bolt patterns to ensure accurate fit-up during fabrication and erection. Coordination between the braces and castellated beams maintained clearances and avoided clashes with deck and surrounding framing, ensuring alignment consistency across all bays.

Key Deliverables

· Detailed 3D models for screen wall systems, castellated beams, braced frames, and base assemblies.

· Shop and fabrication drawings with coordinated bolt layouts, stiffeners, and weld details.

· Long-run tolerance management and alignment control for extended structural assemblies.

· Fabrication-ready models optimized for erection sequencing and site installation.

Project Outcome

Through precision-driven detailing and advanced coordination, Structures Online contributed to the successful execution of the Phelan Pecos Center I & Hawes project. The work demonstrates SOL’s expertise in long-span steel systems, castellated beam detailing, and complex braced framing coordination, delivering a robust, efficient, and constructible structural solution aligned with both architectural and functional requirements.