ASCC presented its fifth annual Decorative Concrete Council (DCC) Awards at a ceremony held Feb. 6 at World of Concrete in Las Vegas. Two Hanley Wood magazines, Concrete Construction and Architect, partnered with the DCC in the awards competition. Serving as judges for the competition were Rebecca Wasieleski, editor of Concrete Contractor; Bob Harris of the Decorative Concrete Institute; Chris Sullivan, of Chemsystems; and Michael Paul, of Duffield Associates.
Contractors were recognized in 11 categories. In each category, except Countertops, projects were divided by size — those under 5000 square feet, and over 5000 square feet. The judges were allowed but not obligated to award a first and second place in each category, under each size classification, but they did not select winners in every category. The winners are listed below.
The judges presented the WOW! Best of Show award to Morley Construction, Santa Monica, Calif., for the San Diego New Central Library. The project design was a joint venture between Rob Wellington Quigley Architects and Tucker Sadler Noble Castro Architects. Turner Construction Company was the general contractor.
The library is 504,000 square feet on nine occupied floors that will house a charter school, a penthouse community center, a children’s library, teen center, homework center, adult literary services center, reader seating for 1200, 407 computer stations, meeting and study rooms, gallery and exhibition spaces, a 350-seat auditorium, a café, and, lest we forget, some books. The project is seeking LEED silver certification.
The structure employs an architectural cast-in-place concrete Special Moment Resisting Frame. SMRF columns and beams resist shear forces within the structure, eliminating the need for shear walls, and are joined with two-way, joist and beam, conventionally reinforced “waffle” slab floor plates.
Challenges included mass concreting, unprecedented aesthetic requirements, and one-of-a-kind components such as the gravity arch that supports the main lobby, and custom roof structures. All concrete above grade was fair-faced, as-cast. The requirements for the vertical surfaces that Morley achieved were:
consistency of color without mottling;
- free of sheen;
- formwork that was sized to human scale with no sheets larger than 4 by 4 or 3 by 6 and oriented randomly to create a “quilted” effect;
- variations of planar surfaces and slight gaps in plywood butting were desired as was slight weathering of the forms. The structure looked 3 years old on opening day.