The Council on Tall Buildings and Urban Habitat has decided to measure a building’s height from the level of the “lowest, significant, open-air, pedestrian entrance,” to accommodate multi-use skyscrapers with several main entrances at different levels. The group also has decided to eliminate its height-to-roof category—acknowledging that fewer tall buildings have easily measurable, distinct roof elevations. Under the new criteria, the 800-meter-plus Burj Dubai, currently set to open as the world’s tallest building in January, will now be measured from the lowest of its three main entrances. Also, under the new criteria, the recently completed Trump International Hotel & Towers
The market is generally healthy and steadily growing, and margins are up for large specialty contractors. Further, advances in design tools and owner demand for collaboration are giving subcontractors a seat at the table early on in projects.