{"id":510,"date":"2026-09-28T09:59:46","date_gmt":"2026-09-28T09:59:46","guid":{"rendered":"https:\/\/ubcbim.com\/insights\/?p=510"},"modified":"2026-09-28T09:59:46","modified_gmt":"2026-09-28T09:59:46","slug":"lgsf-commercial-building-engineering-detailing","status":"publish","type":"post","link":"https:\/\/ubcbim.com\/insights\/lgsf-commercial-building-engineering-detailing\/","title":{"rendered":"Unique BIM Insights – August 2026"},"content":{"rendered":"

\"cold<\/p>\n

Project of the Month :<\/h3>\n

Project Type: Commercial building<\/p>\n

Area : 12880 sft<\/p>\n

Roof: Mono Roof<\/p>\n

Storey: 1- Storey Building<\/p>\n

Scope of Work: 3D Modelling, Detailing, Engineering, Permit sets, CNC Production files<\/p>\n

This project is a 12,280 sq. ft. commercial building featuring a mono roof, designed using a combination of Light Gauge Steel Framing (LGSF) and Red Iron framing. Our scope of work included structural engineering, 3D modelling, detailed framing, permit sets, and CNC production files.<\/p>\n

A key design consideration was the mezzanine floor, which required additional live loads to be incorporated into the structural design. The framing was developed to accommodate the increased loading conditions associated with commercial occupancy while maintaining structural efficiency and constructability.<\/p>\n

The project also incorporated 2\u201d hat channels and HVAC loads, with the roof structure specifically designed to support the weight and loading from HVAC ducts and associated services. As a commercial building, the structure was designed for higher and more demanding load conditions compared to typical residential construction, with the applicable loads considered throughout the framing and engineering process.<\/p>\n

The combination of LGSF and Red Iron framing provided the required strength, stability, and load-carrying capacity while supporting coordinated architectural and MEP requirements. The complete model, detailing, permit documentation, and CNC-ready production files were prepared to maintain accuracy and consistency from engineering through fabrication and construction.<\/p>\n

Software Used : Scotsteel<\/a><\/strong><\/p>\n

Machine Used: Scottsdale CFS Machine<\/a><\/strong><\/p>\n

Technical Snippet :<\/h3>\n

Absolutely. Here is a simple point-wise flow chart for designing a steel moment frame in Seismic Design Category D or above, focusing on the use of the overstrength factor, \u03a9\u2080.<\/p>\n

Moment Frame Seismic Design Flow<\/p>\n

\"cold\"cold<\/p>\n

Key Points<\/p>\n

1. Determine SDC<\/p>\n

* Confirm whether the building is in SDC D, E or F.<\/p>\n

2. Select the moment-frame system<\/p>\n

* OMF<\/p>\n

* IMF<\/p>\n

* SMF<\/p>\n

3. Get the seismic factors<\/p>\n

* R \u2192 used to determine design seismic forces.<\/p>\n

* \\Omega_0 \u2192 used for required overstrength\/capacity-design checks.<\/p>\n

* C_d \u2192 used for drift.<\/p>\n

4. Run the normal seismic analysis<\/p>\n

E = E_{\\text{analysis}}<\/p>\n

5. Design the ductile members<\/p>\n

* Beams<\/p>\n

* Columns<\/p>\n

* Follow the applicable AISC 341 requirements.<\/p>\n

6. Perform capacity design<\/p>\n

* Identify components that must remain essentially elastic while the intended ductile mechanism develops.<\/p>\n

7. Apply \u03a9\u2080 where required<\/p>\n

E_{\\Omega}=\\Omega_0 E<\/p>\n

For example, if:<\/p>\n

\\Omega_0=3.0<\/p>\n

and:<\/p>\n

E=100\\ kip<\/p>\n

then:<\/p>\n

E_{\\Omega}=3(100)=300\\ kip<\/p>\n

8. Do NOT automatically multiply the entire frame by \u03a9\u2080.<\/p>\n

* \u03a9\u2080 is applied to the specific elements\/load combinations required by ASCE 7 and AISC 341.<\/p>\n

9. For an SMF, also check:<\/p>\n

* Strong-column\/weak-beam requirement<\/p>\n

* Plastic hinge formation<\/p>\n

* Moment connection requirements<\/p>\n

* Panel zone<\/p>\n

* Continuity plates<\/p>\n

* Column splices<\/p>\n

* Column bases<\/p>\n

* Other applicable AISC 341 requirements.<\/p>\n

10. Final checks<\/p>\n

* Strength<\/p>\n

* Drift<\/p>\n

* Stability<\/p>\n

* Ductility<\/p>\n

* Connection capacity<\/p>\n

* Seismic detailing<\/p>\n

Easy way to remember<\/p>\n

R \u2192 Analysis<\/p>\n

\u03a9\u2080 \u2192 Capacity \/ Overstrength Design<\/p>\n

Cd \u2192 Drift<\/p>\n

Analysis \u2192 Identify ductile mechanism \u2192 Determine expected strength \u2192 Apply required capacity-design forces \u2192 Design force-controlled components \u2192 AISC 341 detailing.<\/p>\n

\"ENGINEERING\"cold\"cold\"\"<\/p>\n

\n
\n
\n
<\/div>\n<\/div>\n<\/figure>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Project of the Month : Project Type: Commercial building Area : 12880 sft Roof: Mono Roof Storey: 1- Storey Building Scope of Work: 3D Modelling,…<\/p>\n","protected":false},"author":1,"featured_media":511,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-510","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nLGSF Commercial Building Engineering & Detailing | UBC BIM<\/title>\n<meta name=\"description\" content=\"Explore a 12,280 sq. ft. 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