Tornado wrecked First Church of Monson Steeple restored using Precast Concrete, Monson, MA
“This is the first steeple we’ve ever built from precast concrete,” says Naish Artaiz, project manager for URS Corp., the designer of the project. The company often works with telecommunications companies to conceal antennas within steeples for churches, and Church officials selected URS to design the steeple for them.
Richard Sambor, the senior structural engineer for the URS team, suggested a precast concrete design and contacted Coreslab Structures, who worked with URS on previous projects. “My initial reaction was that it wouldn’t look right built with concrete, with visible aggregates and a darker color,” says Artaiz. A visit to Coreslab’s plant eliminated those concerns. “They showed us what they could achieve with white cement and smooth finishes, as well as their ability to replicate decorative detail.”
All the precast components were manufactured and erected by Coreslab Structures (CONN) Inc., of Thomaston, CT.
First Slide-in ABC project using NEXT beams for New York State
Dingle Ridge Road bridge replacement over I-84 is the first project to use the “slide-in” approach to accelerated bridge construction was designed with precast concrete NEXT beams to replace twin bridges in two weekends, with the longest road closure only 20 hours. Beams for the $10.2-million project, located on Dingle Ridge Road over I-84 in Southeast, NY, were fabricated and trucked to the site for assembly next to the existing bridges before sliding them into place on tracks.
“NYDOT felt that they saved an entire construction season while eliminating costs and modified traffic patterns on the interstate,” says Tom Whelahan, Yonkers project manager. “This approach saved money and time minimizing hazards to the traveling public associated with typical staged highway construction.”
The precast concrete New England Extreme Tee (NEXT) beams were fabricated by Dailey Precast at its Shaftsbury, Vermont plant.
Construction Video courtesy of vimeo.com.
PCI to Present Webinar on The New Sound of IEQ: Indoor Comfort & Acoustic Design
Presenter: Richard H. Talaske, FASA
Noon, November 21, 2013
Part of a quality indoor environment is to ensure that sounds are clearly heard by intended listeners, and that unwanted sounds (noise) are isolated or absorbed. This is the art of architectural acoustics. This presentation will address basic acoustic design, including the sound insulating properties of precast concrete. It will include topics such as sound transmission loss, absorption of sound, acceptable sound criteria, composite wall sections, and more. Sample problems and case studies will be used to highlight the concepts being discussed.
- Describe the basic terms and concepts to acoustic design
- Discuss the differences between sound absorption and sound insulation
- Explain what a sound transmission coefficient is
- Describe the benefits and approaches of acoustic design with precast concrete
FEATURED LEARN AT LUNCH PRESENTATION
High Performance Architectural Precast Wall Systems
High Performance Architectural Precast Concrete wall systems have gained incredible recognition from sustainability
practitioners who herald its durability, energy efficiency, mold/mildew resistance, use of recycled materials,
construction waste, and improved construction IAQ. Due to this recognition, these wall systems are being specified
in K-12 school construction, condominiums, hospitals, university dormitories, science buildings, office complexes,
and many other LEED-certified projects throughout the U.S. Topics that are covered in this workshop include:
appearance options; sandwich-wall design; thermal performance; material R-values and assembly R-values; moisture
management; and LEED credits to which precast concrete can contribute.
Length: 1.0 Hour | Credits: AIA HSW 1.0 LU | PDH: 1.0
PCI Announces New Blast Design Manual
PCI’s Blast-Resistant Design Manual, First Edition (MNL 141-12) is now available as an ePub at www.pci.org/epubs.
This manual describes the basic process of blast-resistant structural design for precast/prestressed concrete components.
It includes calculating blast loads on the component, determining the dynamic response of the component, checking the
response against specified performance criteria, designing the component connections, and checking the component for
adequate shear capacity. The emphasis in this manual is on blast loads from exterior explosions and the dynamic analysis
of blast-loaded structural components idealized as equivalent single degree of freedom systems. These assumptions simplify
the blast-resistant design procedure discussed in this manual, but they apply to many cases of practical interest for
anti-terrorism and force protection design. For more details and purchasing information, visit www.pci.org/epubs.
Curved Precast Concrete Bridges State-of-the-Art Report
This publication details the application of curved precast concrete bridge design, fabrication, construction techniques, and
considerations through the study of twelve related projects and constitutes a state of the art report on this topic. The
document was written and intended to provide bridge owners, designers, fabricators and engineers an up-to-date reference
in developing precast concrete bridge solutions for curved geometric situations. The topics include: Straight Girders chorded
from Pier to Pier, Straight Girders Segments with Splices within the Spans, and Curved Precast Girders. Each case study
reviews project specific information, the structural system selected, construction techniques used and the lessons learned.
For more details and purchasing information, visit www.pci.org/epubs.
Updated Fire Publication Now Available on PCI's e-Publication Site
PCI/ICC's Design for Fire Resistance of Precast Prestressed Concrete, Third Edition (MNL 124-11) is available as an electronic publication at
Subscribe to PCI's Ascent Magazine (It's FREE!) or if you prefer read it online.
PCI is proud to offer the first education management system dedicated to the precast concrete and precast structures industries, the PCI elearning Center.
All courses offered through this system satisfy the continuing education requirements of engineers in all 50 states! As an AIA provider, PCI is able to
offer architects approved Learning Units to satisfy their continuing education requirements. Be sure to bookmark us and visit often as we populate this
interface with more and more free, easy-to-access, always-available coursework.
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