Six 50-foot-diameter silos with 12-inch walls and standing 170 feet high were slipped in only 11 days by Younglove crews averaging 102 men per shift. They placed 863 tons of reinforcing steel and poured 9,027 cubic yards of concrete.
The hopper-bottomed silos load out trucks with bulk cement for southern United States deliveries. Each steel-coned hopper is anchored to a ring beam 8 feet wide by 10 feet high, in turn supported by 6 octagonal columns, each 5 feet in diameter and 52 feet high.
A 4,000 psi concrete mix, including Class C fly ash and a 1-inch limestone aggregate with a 50/50 coarse-to-fine ratio, was poured at 6-inch slump. It provided excellent workability and high early strengths throughout the continuous pour.