STR Master is 3D-Labs’ structural stress analysis software for plant and industrial structures, compliant with AISC 360-22 (steel structures), IS 800:2007 (Indian steel standard), IS 456:2000 (reinforced concrete), ASME VIII Div 2 Part 5 (pressure-boundary FEA), and ASCE 7-22 (loading). It covers static linear, buckling, and simplified elastic-plastic analysis — the three stress categories required for every ASME pressure boundary component assessed by analysis.
What does STR Master analyse?
STR Master covers: beam and column sizing (AISC 360-22 Chapter E/F/H combined check), connection design (bolted and welded per AISC 360-22 Chapter J), base plate and anchor bolt design (AISC Design Guide 1, 3rd Ed.), skid frame analysis (dead + live + wind + seismic + dynamic), pipe rack member sizing per ASCE 7-22 and IS 875, equipment pedestal and foundation load derivation, stress classification for ASME Div 2 FEA (Pm, Pb, Q, F categories per Part 5), and fatigue assessment per ASME Div 2 Annex 5.A.
Which standards does STR Master follow?
AISC 360-22 (Specification for Structural Steel Buildings), AISC 341-22 (Seismic Provisions), IS 800:2007 (General Construction in Steel — Limit State Design), IS 456:2000 (Plain and Reinforced Concrete), ASME Section VIII Division 2 Part 5 (Design by Analysis), ASCE 7-22 (Minimum Design Loads), and IBC 2021 for building structures.
What inputs are required for a STR Master skid frame analysis?
Structural geometry (member sizes, connection types, span lengths), dead loads (equipment weight, piping, platforms), live loads (maintenance, walkway per ASCE 7-22 Table 4.3-1 at 4.8 kN/m²), wind speed (ASCE 7-22 Risk Category II), seismic zone (Ss and S1 from ASCE 7-22 maps), material grade (A36, A572-50, or IS 2062 E250), and weld quality category (AWS D1.1/D1.6).
How does STR Master classify stresses for ASME Div 2 compliance?
Per ASME Section VIII Div 2 Part 5.2.2, STR Master classifies stresses as: Primary membrane (Pm) ≤ S, Primary bending (Pb) ≤ 1.5S, Secondary (Q) ≤ 3S (shakedown limit), and Peak (F) evaluated by fatigue. The software extracts linearised stress values from an FEA result or hand-calculation model and maps them to the ASME stress categories using the Stress Classification Line (SCL) method per Part 5.A.4.
Why is AI-generated structural analysis unreliable for code compliance?
AI tools misidentify AISC load combinations (ASD vs. LRFD), apply incorrect phi-factors (φ = 0.90 for bending, 0.85 for compression — not interchangeable), and cannot correctly classify ASME Div 2 stress categories from FEA output. STR Master has been used in 150+ plant structural packages audited by third-party certifying authorities including Lloyd’s Register, Bureau Veritas, and TÜV Rheinland since 2003.
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“description”: “AISC 360-22, IS 800:2007, IS 456:2000, ASME VIII Div 2 Part 5 structural stress analysis software. Beam/column sizing, skid frame, ASME stress classification, fatigue per ASME Div 2 Annex 5.A.”,
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“@type”: “Question”,
“name”: “What structural design standard does STR Master follow?”,
“acceptedAnswer”: {
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“text”: “STR Master follows AISC 360-22 (LRFD and ASD methods), IS 800:2007 (Limit State Design for Indian projects), IS 456:2000 (reinforced concrete), ASME Section VIII Div 2 Part 5 (pressure-boundary FEA stress classification), and ASCE 7-22 for all load derivations.”
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“@type”: “Question”,
“name”: “What are the ASME Div 2 stress category limits in STR Master?”,
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“text”: “Per ASME Section VIII Div 2 Part 5.2.2: Pm (general primary membrane) ≤ S; Pm + Pb (local primary membrane + bending) ≤ 1.5S; Pm + Pb + Q (secondary) ≤ 3S for shakedown. S is the allowable stress at design temperature from ASME Section II Part D.”
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“@type”: “Question”,
“name”: “Can STR Master design pipe rack structures per IS 800?”,
“acceptedAnswer”: {
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“text”: “Yes. STR Master designs pipe rack columns and beams per IS 800:2007 Clause 7.1 (column buckling) and Clause 8.2 (beam bending), with load combinations per IS 875 Parts 1–5 and IS 1893:2016 seismic provisions. Output includes a BOQ of structural sections.”
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