Historic Structural Detail: Prefab

A column in the same 1920s concrete building as yesterday [click to enlarge]: The column has been stripped of its original paint, exposing the rough surface of the concrete. The form marks are clearly visible on the capital, and a little less distinct on the shaft. In theory, the columns could have been formed in …

Historic Structural Detail: Prefab Read More »

Mona Abdelfatah Is A PE

Mona Abdelfatah recently passed the professional engineering exam and is now a licensed PE in New York State. She received an undergraduate degree from UC San Diego in Structural Engineering and had a couple of years of experience with renovation and new construction projects before coming to Old Structures in 2011. At OSE, she has …

Mona Abdelfatah Is A PE Read More »

Historic Structural Detail: Thin Stairs

Fire stairs in a 1924 concrete-frame warehouse: The brown paint is the edge of a concrete slab spanning from the right side of the landing on the right (above the lower door) to a wall out-of-frame off to the left. It’s four inches thick and spans about twelve feet; the treads are simply triangular extensions …

Historic Structural Detail: Thin Stairs Read More »

Historic Structural Detail: The Edge

I’ve mentioned heavy-timber construction before. Here’s an interesting detail from an old warehouse: The planks above are four inches thick and splined to one another, which is typical in heavy-timber construction to prevent hot gas from a fire burning through to the next floor. (The thick wood in this kind of construction will char but …

Historic Structural Detail: The Edge Read More »

Scroll to Top