Skyscraper Floor Section Thickness

Many buildings also have diagonal beams running between the girders for extra structural support.

Skyscraper floor section thickness.

And the wtc was being upgraded as floors become open to a new level of fireproofing before 9 11. The building code requires 5 8 inch plywood or osb. Where the building will be on rock the thickness of the footing may be reduced but timber buildings are very light and can easily be blown off of their. For joist spans 16 inches or less nwfa recommends minimum panel thickness of 5 8 inch plywood or 23 32 inch osb.

There are thinner types of drywall but they are not adequate for ceiling installation. Standard drywall installed on the ceiling below the floor adds a minimum of 1 2 inch to the floor thickness. Plywood and osb o 2 grade. In some cases such as a party ceiling which separates individual apartment units building code may require double drywall layers to reduce.

Maximum spacing of supports mm. This construction is suitable in reasonably stiff soils or marl. The fireproofing level code used on the wtc was change in the city of new york right before this project begin. When nwfa guidelines minimums are not met the recommendations are to overlay the existing subfloor material with a 1 2 inch panel product or add structural support from below.

Osb o 1 grade and. The older building around the wtc comples that had the old code and was of newer construction faired very well. The bulk of the floor s thickness comes from the joists which are the horizontal beams that carry the floor s weight. Joists in home construction are usually made with 2 by 10 or 2 by 12 lumber.