Repair and Rehabilitation
Design

Forensic Engineering/
Failure Investigation/
Collapses

Environmental Structures

Building Facades/
Curtain Walls

Parking Structures

Special Structures

Structural Engineering/
Design

Roofs, Plazas and Waterproofing

Formwork Analysis Design/Shoring-Reshoring Analysis

Foundations and
Geotechnical Investigation

NORTH RIVER WATER POLLUTION CONTROL PLANT
New York, NY

SUNY AT NEW PALTZ
SMILEY ARTS BUILDING ADDITION
New Paltz, NY

SUNY AT STONY BROOK
LIFE AND SCIENCE BUILDING
Stony Brook, NY

SHORING/RESHORING ANALYSIS & INVESTIGATION VARIOUS MULTI-STORY BUILDINGS
New York, NY

The new addition to the Smiley Arts Building is a three-story flat slab reinforced concrete structure. Soon after the concrete slab construction and the removal of the formwork, the slabs developed spider pattern cracking at the vicinity of columns and further exhibited excessive deflections. The slabs were constructed during the winter time with temperatures averaging below 32° F for several days. FKC investigated effects of shoring-reshoring formwork operations, cold weather conditions, and slow concrete strength development impact on the slab cracking and deflections. Concrete maturity models were developed and the approximate concrete strength and slab stiffness at the time of formwork removal were estimated. In addition, FKC conducted field surveys of slab cracking patterns, slab deflections, slab thickness, and performed concrete testing including strength test and petrographic examinations. A report was issued with conclusions and recommendations. FKC provided litigation support services.