Qingdao Yidongxiang Steel Structure Co., Ltd.
Qingdao Yidongxiang Steel Structure Co., Ltd.
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Commercial Building Light Portal Rigid Frame Steel Structure for Optimal Visibility
Light gauge steel (LGS) portal frames are revolutionizing low-rise commercial buildings (e.g., warehouses, retail centers, auto shops) by combining cost efficiency, rapid assembly, and design adaptability. Key characteristics include:
LGS portal frames must balance vertical loads (dead, live, snow) and lateral forces (wind, seismic).
Table 1: Design Load Standards
| Load Type | Commercial Requirement | LGS Solution |
|---|---|---|
| Roof Live Load | 0.75–1.5 kN/m² (15–30 psf) | C-shaped purlins at 1.2–2.4m spacing |
| Wind Load | 120–150 mph (ASCE 7-25) | Knee braces + diaphragm action |
| Seismic Load | SDS ≤ 1.0g (IBC 2025) | Moment-resisting connections |
| Crane Load | 5–20 tons (industrial buildings) | Reinforced haunches with stiffener plates |
Table 2: Light Gauge Steel Properties
| Parameter | G350 Steel | G550 Steel | Application |
|---|---|---|---|
| Yield Strength | 350 MPa | 550 MPa | High-stress regions (knees, apex) |
| Coating | Galfan (Zn-5%Al) | Magnelis (Zn-11%Al) | Coastal or high-humidity zones |
| Thickness | 1.5–3.0 mm | 1.2–2.5 mm | Optimized for weight reduction |
| Embodied Carbon | 1.8 kgCO₂/kg | 2.1 kgCO₂/kg | EPD-certified production |
Table 3: Assembly Timeline (5,000 m² Warehouse)
| Phase | Duration | Key Activities |
|---|---|---|
| Design & Detailing | 3 weeks | BIM clash detection, connection optimization |
| Factory Fabrication | 4 weeks | CNC roll-forming, robotic welding |
| Site Erection | 2 weeks | Bolt-up assembly with mobile cranes (≤50 tons) |
| Enclosure | 3 weeks | Sandwich panel installation, silicone sealing |
Table 4: LEED Credit Opportunities
| Strategy | LEED Credit | Performance Data |
|---|---|---|
| Recycled Steel Content | MRc4 (Building Disclosure) | 92% post-industrial scrap |
| Solar-Ready Roofs | EAc6 (Renewable Energy) | 18 kW PV capacity per 1,000 m² |
| Reflective Roof Coating | SSc7 (Heat Island Reduction) | 85% solar reflectance (Cool Roof Rating Council) |
Project: 8,000 m² distribution center with 32m clear span.
Challenges: Tornado-prone region (Wind Zone IV), 24/7 operations.
Solutions:
Outcomes:
Table 5: Coating Lifespan Comparison
| Coating Type | Environment | Service Life |
|---|---|---|
| Hot-Dip Galvanizing | Rural (C2) | 50+ years |
| ZAM (Zn-Al-Mg) | Coastal (C4) | 35 years |
| Powder Coating | Indoor (C1) | 25 years |
Table 6: Emerging Technologies
| Innovation | Impact | Commercial Application |
|---|---|---|
| Self-Healing Coatings | Microcapsules repair scratches | High-abrasion warehouses |
| 3D-Printed Joints | Customized node geometries | Architectural signature buildings |
| Smart Steel Alloys | Strain sensors embedded in steel | Real-time structural health monitoring |
Light gauge steel portal frames are redefining commercial architecture through lean engineering, circular economy alignment, and digital precision. From AI-optimized logistics hubs to hurricane-resistant retail complexes, this system empowers developers to meet 21st-century demands for speed, sustainability, and adaptability. As robotic fabrication and smart materials advance, LGS portal frames will solidify their role as the cornerstone of next-generation commercial construction.
| Steel structure building | ||||
| 1. Primary Framing | Box beam column, cross steel column, H-shaped steel column, steel beam | |||
| 2. Secondary Framing | Galvanized Z and C sections purlin | |||
| 3. Roof and Wall panels | Steel sheet and insulated sandwich panels (EPS, fiberglass wool and PU). | |||
| 4. Steel Decking Floor | Galvanized steel decking board | |||
| 5.Structural subsystem | Divider, gutter, awning, partition wall | |||
| 6.Mezzanines, Platforms | Painted or galvanized H beam | |||
| 7.Other Building Accessories | Sliding doors, roll up doors, aluminium windows, louvers, etc. | |||
| Service Life | 50-70years | support | steel angle, steel pipe, steel round | |
| Place of Origin | Qingdao,Shandong,China | Application | workshop, warehouse, poultry house,garage etc | |
| Grade | Q235B, Q355B or as per customer's need | Bolt Grade | M20, M16, M14 etc | |
| Connection | intensive bolt, ordinary bolt | Window | PVC steel or aluminum alloy | |
| Downspout | PVC pipe or as per customer's request | Door | sliding or rolling door | |
| Purlin | C/Z shape profile | Panel | EPS/PU/fiber glass/rock wool | |
| Main Frame | Welded or hot rolled H-shaped steel, columns, beams, box beams and columns | |||
| Drawings & Quotation: | ||||
| (1) Customized design is welcomed. | ||||
| (2) In order to promise an accurate quotation and drawings, please let us know the length, width, eave height and local weather.We will quote for you promptly. | ||||
Our Service
I. We would offer you the proposed design plan and the most valuable quotation based on the parameter of the following information.
1. Building Dimension: Length*width*height, eave height, roof type etc.
2. Doors and windows: Dimension, quantity, position to put them if you have your own requirements.
3. Local climate: Wind speed, snow load, earthquake etc.
4. Insulation material for roof and wall: Sandwich panel or single metal sheet.
5. Crane if have: Do you need crane beam inside the steel structure? And its capacity.
6. If have other requirements, such as fire proofing, isolated roof ,roof ventilation and daylighting etc, please kindly inform us.
II. In accordance with your requirement, our experienced engineers would provide the best program.
III. We would give the best service to our client, including design, manufacturing,installation and after-sale service etc.
We can provide the service of installation, supervision, and training by extra. We will dispatch our engineers team to your country to guide the assemble work, and we will provide the detailed professional installation drawings and guide installation service team keep 24-hour online service ,they will help you to install your steel structure building .
IV. QC processing:
1. Every one week meeting for Quality Audit to solve the weakness during processing and procedures
2. Every two weeks meeting for employee training.
3. Producing as to the International Steel Structure Standard with ISO 9001 Quality Control System
4. Each project, every 1 months, connect with clients for feedback and complaints, then improve the quality control actions.
5. Quality inspection report for every process during production. Ensure 100% good quality products.
FAQ
I. What kind of Industry Steel Workshop do you need?
There are very experienced, expertised engineers in our company who can design whatever shape of buildings as your request. Your building is a major investment and you take it seriously. So do we! .
We are professional manufacturer of steel structure building.
III:Do you offer guiding installation on site overseas for warehouse building?
Yes, we can provide the service of installation, supervision, and training by extra. We will dispatch our engineers team to your country to guide the assemble work, and we will provide the detailed professional installation drawings and guide installation service team keep 24-hour online service ,they will help you to install your steel structure building .
IV. What's the quality assurance you provided and how do you control quality?
We have professional QC team monitoring the quality at all stages of the manufacturing process - raw materials, in-process materials, validated or tested materials, finished Goods and packing the Goods, we also accept the third party International inspection agencies to inspection the quality such as SGS,BV etc.
V. Could you offer designing service?
We have complete engineering team and we are using the state of the art designing and manufacturing software, Tekla, Advance Steel,Auto CAD, PKPM, MTS, 3D3S, Search etc. We are capable of designing and offering your economical solution to your needs if there is any inquiry. Please do not hesitate to contact which will be at your disposal at any time. Please note preliminary costing and design will be done at no extra cost.
IV:Is there any warranty available on the steel structure buildings?
The steel structure buildings have limited warranty. Usually,steel structure houses with long use lifespan which can reach 50 to 100 years which depending on material quality, design standards, construction quality, and subsequent maintenance.