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To connect a 10-story addition to the San Francisco Museum of Modern Art’s existing five-story building, designers had to overcome significant geotechnical challenges.

Revisions to UL Design No. D982 in the UL Fire Resistance Directory, based on recent fire tests, have heated up long-standing differences between structural-steel interests and fire-protection suppliers and installers about the amount of sprayed-on fire-protection material needed for structural-steel floor assemblies.

Compared with some of its Manhattan neighbors, a high-rise on the corner of Seventh Avenue and West 47th Street looks standard.

Hundreds of components of Victorian-era gasholders have found new life close to their original London home as enclosures for three new, high-end apartment blocks.