This is an image from a Lord and Burnham Greenhouse circa 1938. My architect is asking me to interpret the abbreviation "F.I." Some of the greenhouses in the complex have cast iron members while other, newer ones, are steel. We're wondering if this is an archaic abbreviation for "Ferrous...
I am peer reviewing the design of a structural slab on grade. It has two conditions: one is an office, the other is a covered parking structure....both are enclosed and the parking structure is ambiently heated to 55+ deg year round.
The design engineer has utilized 1" of bottom cover and...
