*

 4


1 1611


'M6'N


END NEENS DICE AND ENE NE


1V2 million cubic feet under one roof with no interior supports!



 Prestressed
 concrete
 makes it


This imposing structure-360 feet long, 125 po
feet wide and 5/2 stories high-is one of two
built for the American Agricultural Chemical Company
near Pierce, in Polk County, Florida. Designed by
Lakeland Engineering Associates, Inc., for storage of
bulk fertilizer, the structures are part of a multi-million-
dollar phosphate complex.
 The prestressed concrete double-T's of the inclined
roof are 8 feet wide, achieve a span of 75 feet. The
hollow flat slabs for the flat roof are also prestressed.
Anchored to cast-in-place concrete side walls, the pre-
stressed members bear the entire roof load. No
APRIL, 1965


;sible


interior columns are needed. To provide the
maintenance-free advantages of an all-


concrete building, end walls are concrete masonry.
 Prestressed concrete, today, provides exceptional
versatility of design. With appropriate decorative treat-
ment, the type of construction shown could provide a
handsome church or dramatic civic auditorium. More
and more, engineers and builders are choosing pre-
stressed concrete for structures of every size and type.
 PORTLAND CEMENT ASSOCIATION
 1612 East Colonial Drive, Orlando, Florida 32803
 An organization to improve and extend the uses of concrete