One common issue in crane beam design is the limited width of the upper flange, which may not meet track installation requirements and can lead to turbulence during operation. This is a frequent problem in many structures. For cranes exceeding 10 tons, the lateral compression flange of the crane beam often lacks reinforcement or horizontal bracing, resulting in instability and movement during operation. Roof slopes steeper than 40 degrees can lead to structural failure under high wind loads, as the shape factor specified by load codes might not be sufficient for such conditions. Multi-span unequal height portal frames or factory buildings with skylights often experience irregular wind load distribution due to chaotic shape factors, leading to potential structural risks. In some cases, the building uses an H-shaped steel roof beam with a hinged column top, but it's mistakenly designed as a portal frame system, which can compromise stability and performance. Many designs lack comprehensive calculations for components like purlins, wall beams, and support systems. Node connections are often simplified, leading to potential weaknesses in the structure. When purlins are used as vertical supports in trusses, their axial capacity and slenderness ratio are frequently overlooked, which can affect overall stability. Some factories do not include tie bars between columns, reducing lateral stability and increasing the risk of collapse under dynamic loads. In certain projects, cross bracing is only placed near the side columns, failing to form continuous horizontal trusses, which weakens the structural integrity. Grade A steel cannot be used without proper justification, as its application depends on specific structural needs and loading conditions. Most projects neglect to check the horizontal reaction at the base of the column, which can lead to foundation issues over time. Some temperature sections lack independent thermal expansion support systems, making it difficult to maintain structural rigidity and prevent deformation. Project drawings sometimes fail to specify weld types and quality levels, which can result in substandard welding and compromised safety. The placement of lateral and vertical supports on the roof is often misaligned, preventing the formation of rigid spatial blocks and weakening the overall structure. At turning points in rigid frames, some projects omit the necessary rigid frame elements, relying instead on standard rafters that cannot ensure longitudinal stability. Second-floor factories that skip overall structural analysis may have hidden safety hazards, especially when subjected to dynamic or seismic loads. Some end plates are thinner than the recommended 16mm, which could reduce their load-bearing capacity and increase the risk of failure. When cranes are present, swing columns are sometimes used at center positions, which may not provide the required stiffness or stability for heavy-duty operations. Some projects completely omit support systems, leaving the structure vulnerable to lateral forces and deformations. Wind-resistant columns are sometimes improperly positioned, not aligning with the nodes of the horizontal support system, reducing their effectiveness in resisting wind loads. The uplift force on anchor bolts in areas with inter-column supports is often not calculated, potentially leading to loosening or failure under tension. There is often no detailed calculation book for the connection nodes between roof supports and column supports, which makes it difficult to verify their strength and reliability. Overall, these issues highlight the importance of thorough design reviews, accurate calculations, and adherence to construction standards to ensure the safety and durability of industrial structures. Portable handheld haze meter,Carry a haze meter during business trips,Multi aperture haze meter CHNSpec Technology (Zhejiang)Co.,Ltd , https://www.chnspec360.com