ENGINEERING EXCELLENCE
What makes NASG different isn't marketing. It's physics. Zero eccentricity, laser welding, and embedded connections create a structural system that outperforms everything else on the market.
CORE INNOVATION
Eccentricity is the enemy of structural efficiency. When loads don't pass through the centerline, you create bending moments that stress connections and reduce capacity.
SJI joists use single crimped-angle webs. Inherently eccentric. The load path is offset from center, creating stress concentrations at every connection.
NASG solution: Mirrored double-layer configuration. Front and back HSS tubes on each chord. Gusset plates on the longitudinal centerline. All loads pass through true center.
CONSTRUCTION
Two identical truss planes, mirror-imaged and connected. Hollow Structural Section (HSS) tube members throughout.
This configuration creates a three-dimensional space frame that resists loads in all directions. Lateral stability is inherent, not added.
Think of a crane boom. Vertical pick = maximum lift. Move the boom toward horizontal and lifting capacity drops dramatically. Past 45° the machine becomes unstable.
Same principle applies to truss diagonals. 45° is optimal load transfer. Go shallower and gusset stress increases exponentially.
NASG never exceeds 45°. This is non-negotiable. Panel width always equals 2× depth. A 30" deep truss has 60" (5') panels. This locks in 45° on every diagonal.
Need more span? Go deeper, not flatter. End panels use steeper angles (more vertical) to transition into bearings.
Other manufacturers push past 45° to save depth. They're fighting physics. Connections get overloaded. Buildings fail.
The heat affected zone (HAZ) is where welding destroys material properties. Steel in the HAZ loses strength, becomes brittle, and is prone to cracking.
MIG welding creates HAZ zones over 1" wide. On a small connection, that's the entire joint compromised. Laser welding concentrates heat in 1/8" - preserving strength where it matters.
NASG uses 3000W+ dual-wire laser welders. Fast, precise, minimal heat input. Every connection maintains full material strength.
Combined with Grade 70-100 HSS tubes (not re-cert A36), connections perform as designed. No hidden weakness at the joints.
Roof deck →
Deck straps →
Saddle cover →
Saddle →
3 anchor rods →
Wall core →
Foundation
CONNECTION
The problem with tabs: SJI joists sit on welded tabs attached to walls. Under load, tabs wrench off. Wall collapses. People die.
NASG solution: Embedded saddles capture the truss inside the wall. Three anchor rods extend deep into CMU. Cover plate locks everything down.
To fail, you'd have to destroy the wall itself.
Most steel joists use "re-certified" A36 steel - material that failed to meet original specifications, then got downgraded paperwork. You're building on rejected steel.
NASG uses Grade 70-100 HSS exclusively. Real material strength with full traceability. When the specs say 70 ksi yield, that's what you get.
MANUFACTURING
Conventional truss manufacturing requires different jigs for every configuration. Changeover time kills productivity.
NASG's parametric web panel system uses ONE jig. Variable depth, any configuration. Only the depth dimension changes—everything else is constant. Setup once, produce everything.