Skyscraper Floor Section Thickness

Maximum spacing of supports mm.

Skyscraper floor section thickness. Standard drywall installed on the ceiling below the floor adds a minimum of 1 2 inch to the floor thickness. Click build to see how the parts of a skyscraper work together. 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.

The building code requires 5 8 inch plywood or osb. Osb o 1 grade and. This construction is suitable in reasonably stiff soils or marl. The older building around the wtc comples that had the old code and was of newer construction faired very well.

There are thinner types of drywall but they are not adequate for ceiling installation. 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. 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. Many buildings also have diagonal beams running between the girders for extra structural support.

An acceptable arrangement for a foundation of a small timber building with a concrete or wood floor is shown in these figures. Joists in home construction are usually made with 2 by 10 or 2 by 12 lumber. For joist spans 16 inches or less nwfa recommends minimum panel thickness of 5 8 inch plywood or 23 32 inch osb. And the wtc was being upgraded as floors become open to a new level of fireproofing before 9 11.