Structural Engineering Package
US Standards Canadian Building Code Australian Standard

Strategic Analysis of Cold-Formed Steel Engineering Package Development

Precision LGS framing solutions engineered for regional building code compliance, advanced structural finite element analysis, and direct CNC manufacturing workflows.

1/16"
Zero-Clash Tolerance
CNC Ready
Direct-to-Machine
Consac Engineering Platform
End-to-End LGS Package Synthesis
Room-temperature roll-forming & press-braking
High strength-to-weight ratio profiles
Non-combustible structural framing system
Consac Engineering Core Offerings

Comprehensive Cold-Formed Steel Engineering Deliverables

Cold-formed steel members (0.75mm to 3.0mm thickness) exhibit complex thin-walled stability modes. Consac Engineering bridges the gap between architectural concept and direct factory fabrication through a zero-clash, 4-tier structural engineering package optimized for international regulatory approval.

TIER 1

Structural Analysis & FEA

Finite element load modeling, dynamic wind/seismic LFRS, and elastic buckling verification.

Explore Analytical Details →
TIER 2

3D BIM & Clash Detection

Revit/Tekla 3D modeling, MEP spatial clash coordination, and framing geometric mapping.

Explore BIM Details →
TIER 3

Shop Drawings & Schedules

2D panelized layouts, stud framing elevations, strap bracing schematics, and screw take-offs.

Explore Shop Drawing Details →
TIER 4

Direct-to-CNC Machine Data

Coordinate-driven machine code files (Howick, FRAMECAD, Pinnacle) with inline punch ops.

Explore CNC Details →
TIER 1 SPECIFICATION

Structural Analysis & Analytical Verification

Outputs: .CALC, .FEA, .PDF Calculations

Core Engineering Actions

  • • Dynamic load combination calculations (Gravity, Seismic, Wind, Snow).
  • • Finite Strip Method (FSM) elastic buckling stability analysis via CUFSM logic.
  • • Lateral Force Resisting System (LFRS) shear wall & diaphragm sizing.

Technical Standards Addressed

  • • USA: AISI S100-24, AISI S240, AISI S400, AISI S310.
  • • Canada: CSA S136-16, NBCC Limit States Design (LSD).
  • • Australia: AS/NZS 4600:2018, AS 1170 suite.

Quality & Tolerances

  • • Deflection limits: L/360 gravity, L/240 or L/600 wind drift limits.
  • • Material thickness verification (min 95% base metal rule).
  • • Connection safety factor compliance across ASD / LRFD / LSD.
1/32 in
BIM Modeling Precision Tolerance
Eliminates field clashes between MEP & framing studs.
+10%
Capacity Optimization via DSM
Direct Strength Method over EWM reduces steel tonnage.
100%
CNC Machine Code Ready
Automated dimple, swage, service hole & notch coordinate files.
Multi-Jurisdictional Compliance

Regional Engineering Standards & Design Basis

Compare regulatory frameworks across the United States, Canada, and Australia.

  • All Markets
  • USA
  • Canada
  • Australia
🇺🇸

United States Market

AISI / IBC Framework

ASD & LRFD
Primary Code Standard:

AISI S100-24 / AISI S240-20

Seismic Requirements (SFRS):

AISI S400-20 capacity-based ductile design; prevents brittle stud chord failure.

Diaphragm Specification:

AISI S310-23 for steel decks (out-of-plane buckling & fastener flexibility).

Special Inspections (IBC Ch. 17):

Mandatory Statement of Special Inspections (SSI) for high-seismic, welded, & deck assemblies.

Thermal Basis:

AISI S250 Opaque Thermal Zone (OTZ) U-factor calculations with continuous exterior insulation.

Steel Gauge Designator: Mils / Gauge System
🇨🇦

Canadian Market

CSA / NBCC Framework

LSD Limit States
Primary Code Standard:

CSA S136-16 / CSSBI 58-2024

Thickness Rules (CSSBI):

Minimum delivered base steel thickness must be ≥ 95% of design thickness.

Seismic Wall Limits (NBCC):

FEMA P695 calibrated ($R_d=2.0$, $R_o=1.3$). Ordinary steel-sheathed walls limited to max 15m height.

Member Naming Standard:

e.g., 600S162-54 (6.00" depth, 1.62" flange, stud, 54 mil thickness).

Fire Endurance:

CAN/ULC S101 encapsulation criteria with multi-layer Type X gypsum.

Design Philosophy: Resistance Factor (φ)
🇦🇺

Australasian Market

AS/NZS / NCC Framework

DSM Dominant
Primary Code Standard:

AS/NZS 4600:2018 / NASH Standard

Thickness Mandate:

Strict Base Metal Thickness (BMT) mandatory over TCT (Total Coated Thickness).

Steel Grades & Wind:

High-tensile G450/G550 steels; dynamic cyclonic wind actions per AS 1170.2.

NCC 2022 Thermal Rule:

Mandatory continuous $R_{0.2}$ thermal break between metal frame & external cladding.

Bushfire Provisions:

NASH compliance for BAL-12.5 up to BAL-40 flame/heat resistance.

Capacity Factors: φ=0.90 (M), φ=0.85 (P)
🇺🇸

United States Market

AISI / IBC Framework

ASD & LRFD
Primary Code Standard:

AISI S100-24 / AISI S240-20

Seismic Requirements (SFRS):

AISI S400-20 capacity-based ductile design; prevents brittle stud chord failure.

Diaphragm Specification:

AISI S310-23 for steel decks (out-of-plane buckling & fastener flexibility).

Special Inspections (IBC Ch. 17):

Mandatory Statement of Special Inspections (SSI) for high-seismic, welded, & deck assemblies.

Thermal Basis:

AISI S250 Opaque Thermal Zone (OTZ) U-factor calculations with continuous exterior insulation.

Steel Gauge Designator: Mils / Gauge System
🇨🇦

Canadian Market

CSA / NBCC Framework

LSD Limit States
Primary Code Standard:

CSA S136-16 / CSSBI 58-2024

Thickness Rules (CSSBI):

Minimum delivered base steel thickness must be ≥ 95% of design thickness.

Seismic Wall Limits (NBCC):

FEMA P695 calibrated ($R_d=2.0$, $R_o=1.3$). Ordinary steel-sheathed walls limited to max 15m height.

Member Naming Standard:

e.g., 600S162-54 (6.00" depth, 1.62" flange, stud, 54 mil thickness).

Fire Endurance:

CAN/ULC S101 encapsulation criteria with multi-layer Type X gypsum.

Design Philosophy: Resistance Factor (φ)
🇦🇺

Australasian Market

AS/NZS / NCC Framework

DSM Dominant
Primary Code Standard:

AS/NZS 4600:2018 / NASH Standard

Thickness Mandate:

Strict Base Metal Thickness (BMT) mandatory over TCT (Total Coated Thickness).

Steel Grades & Wind:

High-tensile G450/G550 steels; dynamic cyclonic wind actions per AS 1170.2.

NCC 2022 Thermal Rule:

Mandatory continuous $R_{0.2}$ thermal break between metal frame & external cladding.

Bushfire Provisions:

NASH compliance for BAL-12.5 up to BAL-40 flame/heat resistance.

Capacity Factors: φ=0.90 (M), φ=0.85 (P)
Detailed Multi-Jurisdictional Cross-Reference Matrix
LGS / CFS Standards
Feature / Metric
United States USA
Canada CAN
Australia / NZ AUS
Governing Code AISI S100-24 / IBC 2024 CSA S136-16 / NBCC 2020 AS/NZS 4600:2018 / NCC 2022
Design Methodologies ASD & LRFD supported Limit States Design (LSD) only LSD with DSM strongly prioritized
Steel Specification ASTM A1003 / A653 (33-118 mil) CSSBI 58-2024 (≥95% design t) AS 1397 BMT (G450 / G550 steel)
Seismic Wall Height Limit Governed by drift & AISI S400 Strict Max 15m (Ordinary shear) AS 1170.4 dynamic acceleration
Thermal Break Requirement Continuous insulation per IECC Continuous exterior R-value Mandatory R0.2 isolator strip
Thin-Walled Structural Mechanics

Effective Width Method (EWM) vs. Direct Strength Method (DSM)

Thin-walled CFS sections buckle elastically before yielding ($F_y$). While EWM analyzes plates independently (ignoring edge restraint), DSM evaluates the entire cross-section holistically using Finite Strip Method (CUFSM) signature curves.

CUFSM Finite Strip Elastic Buckling "Signature Curve"

P_cr / P_y Ratio vs. Half-Wavelength
Signature Curve Insights: The minima on this curve represent critical elastic buckling loads: Local ($100-250\text{mm}$), Distortional ($400-800\text{mm}$), and Global ($>1500\text{mm}$).

Buckling Mode Inspector

Cross-Section Deformation Visualizer
Local Buckling Mode

Flat plate elements flex in/out between rigid corner nodes. Corner junctions do not translate or rotate. Half-wavelength: 100mm - 250mm.

EWM Limit: Independent plates.
DSM Solution: Uses $P_{crl}$ empirical curves.
DSM Capacity Gain vs EWM: +8% to +12%
Captures inter-element compatibility & stiffener interaction.
Advanced Sub-Disciplines

Structural Mechanics Component Lab

Explore specialized engineering mechanics designed into Consac Engineering packages: beam-column interaction, concentric shear walls, steel diaphragms, and progressive collapse prevention.

External Sheathed vs. Center-Sheathed Shear Wall

Standard externally sheathed CFS shear walls fail prematurely under cyclic seismic loading when fasteners pull through the sheathing due to eccentric torsional loading. Consac Engineering specifies concentric "center-sheathed" corrugated wall assemblies for mid-rise seismic applications.

External OSB / Steel Sheathing
  • • Eccentric loading causes stud twist.
  • • Brittle fastener pull-over failure.
  • • Rapid hysteresis degradation.
  • • Low cyclic drift capacity (< 2%).
Concentric Center-Sheathed
  • • Corrugated steel trapped in stud center.
  • • Pure tension-field action (brace mode).
  • • Stable, energy-dissipating loops.
  • • Up to 4x shear capacity (> 8% drift).
OpenSees Hysteresis Model: Pinching4 material simulation captures screw slip, thread degradation, and pinched cyclic energy loss under CUREE seismic loading protocols.

Cyclic Force vs. Lateral Drift Hysteresis Curve

4x Shear Capacity

Beam-Column Interaction Dynamics (Combined Axial + Flexure)

Load-bearing studs endure simultaneous axial gravity load ($P$) and transverse wind bending moment ($M$). Older code equations used linear combination formulas that underestimated secondary flexural-torsional bifurcations.

AISI S100-24 Direct Strength Method Update

Evaluates the actual stress gradient across the section under combined state ($P + M$) via Finite Strip Method, eliminating excessive conservatism while capturing warping torsion bimoments.

Critical Failure Modes Handled

Flexural-torsional buckling, distortional bifurcation under axial compression, and localized web crippling near support track connections.

Steel Deck Diaphragm Engineering (AISI S310-23)

Horizontal steel floor/roof decks distribute lateral forces to vertical shear walls. Consac Engineering calculates flexibility factors for structural support and sidelap fasteners across four critical limit states.

1. Edge Shear
Fastener tear-out along perimeter beam.
2. Interior Shear
Sidelap screw shear yield between panels.
3. Out-of-Plane
Panel profile diagonal elastic buckling.
4. Concrete Fill
Diagonal tension cracking limit state.

Progressive & Disproportionate Collapse Mitigation (UFC 4-023-03 / AISI S202)

To prevent catastrophic cascading failures caused by localized stud removal (e.g., blast or vehicle impact), Consac Engineering uses the Alternate Path (AP) method to design continuous redundant load paths.

Vierendeel Truss Action

Moment-resisting continuous deep tracks bridge missing first-floor stud packs.

Catenary Cable Tension

Continuous horizontal steel straps invoke membrane tension action across removed bay gaps.

Redundant Screw Connections

High-capacity screw clusters engineered against dynamic shock shear & pull-out.

Building Envelope Physics

Thermal, Acoustic, and Fire Engineering Engine

Steel's high thermal conductivity requires specialized thermal bridging calculations. Explore the AISI S250 Opaque Thermal Zone (OTZ) calculation visualizer, acoustic decoupling mechanisms, and fire encapsulation rules.

AISI S250 Opaque Thermal Zone (OTZ) U-Factor Calculator

Evaluates parallel thermal paths: Cavity insulation ($R_{spc}$) vs. Steel stud path ($R_{sps}$).

AISI S250 Method
Simulated Assembly Temperature Gradient Cross-Section
Overall Calculated U-Factor ($U_o$):
U-0.064
Effective Resistance ($R_{eff}$):
R-15.6
Complies with Australian NCC 2022 $R_{0.2}$ Thermal Break & US IECC Continuous Insulation.

Acoustic & Fire Compliance

Acoustic Decoupling (STC / IIC)

Steel framing conducts vibration easily. Consac Engineering specifies resilient channels, staggered studs, and high-density acoustic mineral wool to reach STC 50+ rating.

Fire Encapsulation Standards

Thin steel loses strength at elevated temperatures. Fire resistance relies on Type X / Type C gypsum board encapsulation or intumescent coatings.

• USA: ASTM E119 / UL 10B/10C
• Canada: CAN/ULC S101
• Australia: AS 1530.4 (60-120 min)
Continuous thermal breaks prevent interstitial moisture condensation at interior dew point boundaries.
Direct-to-Machine Manufacturing

CNC Machine Tooling & Detailing Operations

3D BIM models (Revit/Tekla/Vertex BD) export directly to CNC machine file formats (Howick CSV, FRAMECAD XML/FCP, Pinnacle). Interactive tool below illustrates inline physical punching operations executed by roll-formers.

Select CNC Tooling Operation

1. Swage (Chamfer) Track Nesting

Narrows stud profile end so it fits snugly inside track without bulging track flanges.

2. Dimple Punch Flush Screw

Creates localized depression so screw heads sit perfectly flush under drywall.

3. Service Hole MEP Passage

Aperture for electrical/plumbing; analyzed via CUFSM hole modules for shear reduction.

4. Web / Lip Notch Member Intersection

Removes lip/web to let crossing bracing and noggings pass flush through studs.

AUTOMATED TOOLING DISPLAY

Swage (Chamfer) Punch Operation

Coords: [X, Y, Z, Punch_ID]
Engineering Purpose:

Allows vertical stud ends to taper slightly so they slot inside tracks without pushing track flanges outward. Maintains smooth wall face for drywall attachment.

Hardware Integrations: Simpson Strong-Tie, MiTek, Pryda hold-downs. Fasteners: #10 / #12 Self-Drilling Screws
Consac Engineering Order Configurator

Generate Engineering Package Specification

Configure project parameters below to instantly build a customized engineering package specification summary ready for submission to Consac (https://consac.com).

GENERATED SPECIFICATION

Consac Engineering Package Scope

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