What is meant by each of these abbreviations?
a. GYP.BD.
b. FOUND.
c. FIN. FL.
d. O.C.
e. REINF.
f. EXT.
g. COL.
h. DIA.
i. ELEV.
j. CONC.
What is meant by each of these abbreviations?
a. GYP.BD.
b. FOUND.
c. FIN. FL.
d. O.C.
e. REINF.
f. EXT.
g. COL.
h. DIA.
i. ELEV.
j. CONC.
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