查看更多>>摘要：I am designing some vertically curved steel members。 My designs have a large radius and a relatively short span， so my H/L_s (see Figure 1) value is less than 0。1。 AISC Design Guide 33: Curved Member Design states that an H/L_s less than 0。2 is a higher risk for snap-through buckling。 However， I don't see any information for an H/L_s less than 0。1。 Is there a lower limit to where a beam acts more as a cambered beam than a curved beam， and the recommended procedures in the design guide are no longer relevant? It is always safe to neglect any horizontal translational restraint and design vertically curved members as beams。 This can be accomplished in the structural analysis model by releasing the horizontal translational restraint at one end of the member。
查看更多>>摘要：Is there any design and detailing information on special moment frames (SMFs) connected to the web of a column? I am not aware of any design or detailing resources for an SMF with the beam connecting to the column web as you describe。 I am also not aware of any specific section of the AISC Seismic Provisions for Structural Steel Buildings (ANSI/AISC 341) that expressly prohibits the column orientation you describe。 However， there are provisions that would make this condition impractical。
查看更多>>摘要：The soon-to-be released 2022 version of the AISC Specification brings flexibility and innovation to composite beam design with the introduction of a performance-based alternative for shear connections。
查看更多>>摘要：As GDP recovery goes， so typically does construction-12 to 18 months later-making it a useful， if not perfect， economic indicator to keep an eye on。
查看更多>>摘要：This year's Forge Prize winners discuss their Common Sky concept， which has the potential to take urban housing projects to new heights， both figuratively and literally。
查看更多>>摘要：PERFORMANCE VENUES are typically known for what's inside， but a new theater in suburban Washington， D。C， demonstrates that what's on the outside also counts。 Capital One Hall， a high-end corporate event and performing arts center in Tysons， Va。， just a few miles west of Washington， is topped by a sprawling landscaped public park and wrapped in a signature sawtooth marble and glass facade。 The new venue， which opened this past October， houses a 1，600-seat main theater， a 225-seat black box theater， and a large atrium。 As part of the larger Capital One Center development， it shares a block-along with a parking and loading-dock facility-with a grocery store and hotel tower。 In addition to Broadway shows， concerts， and other entertainment acts， it hosts an extensive series of local arts groups through a partnership with ArtsFairfax， giving up-and-coming performers a world-class stage on which to showcase their talents。
查看更多>>摘要：FORD MOTOR COMPANY isn't throwing caution to the wind when it comes to increasing the performance of its products and preparing for vehicle electrification。 The auto manufacturer's new Vehicle Performance and Electrification Center (VPEC)， situated on a 14-acre campus in Allen Park， Mich。， was built to test passenger and motorsports vehicles to achieve even greater fuel efficiency， as well as to perform battery research and testing for future vehicle electrification。 The 210，000-sq。-ft facility includes three attached buildings featuring the most technologically advanced wind tunnel of its kind in the world， capable of speeds of up to 200 mph。 It also includes a state-of-the-art rolling road system， a traversing measurement system， a cutting-edge frontal area measurement system， a variety of battery cyclers and environmental chambers， and multiple offices and work areas。
查看更多>>摘要：While supply chain shortages have affected paint and primer products for structural steel applications， there's no need to panic-because a significant portion of structural steel doesn't need to be painted or primed。
查看更多>>摘要：The winners of AISC's SpeedConnection Challenge work to push the erection envelope and allow steel frames to come together faster。 A HANDFUL OF NEW CONNECTION CONCEPTS are showing promise in facilitating faster steel erection。
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