dox blocks question

huangyhg

dox blocks question
hello,
i am looking for some information about dox blocks for a 1955 floor framing system. any documentation regarding dox blocks, including span tables, material properties, and section properties, would be very helpful.
thanks all.
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it will be tough to find. do you have idea which of the configurations it might be?
are you in minnesota, michigan or ohio?
i saw a building with a long span roof truss system built in the 1950s or 60s out of dox block (or similar) and it is still performing beautifully.
i will get back if i come up with something on the plank.
dick
the building is in baltimore.
the blocks are 16" in section, with a trapezoidal cavity and typically 2-#5 bars. span is about 13'. floors have a 2" topping slab and roof has none.
proper dimensions would be helpful as well as material properties and any other documentation.
any ideas?