The NYSCMA
has introduced its “F’m2000 - Assurance of Quality Program”,
across New York State. The purpose of the program is to promote
cost-effective structural masonry designs by utilizing higher
strength concrete masonry units.
Within the
F’m2000 program, participating NYSCMA member block producers
manufacture their regular production concrete masonry units to
achieve minimum unit compressive strengths of 2800 psi in 28
days. This unit strength translates into a compressive strength
of the masonry (f’m) as assembled of 2000 psi when type S or M
mortar is used. The F’m2000 standard exceeds current New York
State building code requirements and ASTM C - 90.
Concrete
masonry units are pre-qualified for inclusion in the program via
standard ASTM testing procedures performed at the National
Concrete Masonry Association headquarters in Herndon, Virginia.
In addition, quarterly random tests are performed in accordance
with ASTM C 140 to verify consistency of unit strength.
New York
State Projects where F’m2000 concrete masonry units have been
specified include
| |
 |
Cayuga-Onondaga County BOCES, Auburn |
235,000
8” equivalents |
| |
 |
Arongen
Elementary School, Clifton Park |
130,000
8” equivalents |
| |
 |
D&L
Manufacturing, Syracuse |
15,000
8” equivalents |
| |
 |
Washington Rose Elementary School, Roosevelt |
138,500 8” equivalents |
For more information on
the F’m2000 Assurance of Quality Program,
click here.
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New York State Department of Transportation and Federal Highway
Administration
The NYS
Concrete Masonry Association initiated the formation of a joint
task group to investigate and resolve problems with concrete
paver installations described during a technical session
conducted at the
2004 NYSCMA Spring Masonry Tech Day. A representative from FHWA
commented that troubles with several installations in crosswalks
and intersections across the state prompted a moratorium on the
use of concrete pavers where vehicular traffic counts exceeded
4000 AADT (Annual Average Daily Traffic).
The NYSCMA
formed the coalition with representatives from FHWA, NYSDOT, the
Interlocking Concrete Pavement Institute, and an NYSCMA member
producer.
The dilemma
with the paver installations was quickly identified in the first
meeting. The failures were due to the NYSDOT specification in
place at the time that allowed the pavers to be installed
directly over a milled asphalt surface. Traffic loads were
transferred through the pavers to the asphalt, which continued
to rut and shove under traffic load. The pavers then began to
spread apart as they conformed to the contours of the rutted
asphalt base.
After several
conferences conducted at the NYSCMA’s Albany office in 2006, a
new specification with separate design details was drafted and
distributed to the NYSDOT Regional Materials Engineers as an
Engineering Instruction for Precast
Concrete Paving.. The EI specifies that concrete
pavers placed in traffic situations shall be installed upon an
8” concrete sub-base, rather than asphalt. Pavers are also to be
placed in a herringbone pattern, which offers a tighter
interlock than other patterns, according to experts at the ICPI.
Finally, the traffic threshold was raised to 8000AADT.
The first trial for the
new
specification and
design
details was the street in front of the
Niagara Falls Conference Center, NYSDOT Region 5. Approximately
5000 square feet of concrete pavers were placed on 112 cubic
yards of Class C NYSDOT concrete sub-base, 8” thick, from curb
to curb over four lanes, four blocks long. A second project,
located in East Aurora, N.Y., is scheduled to be bid in July
2007, and will require 56,000 square feet of 8” concrete
sub-base and concrete pavers.
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NYS Education Department, NY-CHPS Guidelines for High
Performance Schools
The New York State Education
Department has announced the publication of “NY-CHPS – High
Performance Schools Guidelines”. The Guidelines were prepared with
support from the New York State Energy Research and Development
Authority (NYSERDA) in cooperation with The Collaborative for
High Performance Schools, Inc.
The Guidelines were written
to assist school districts and their design teams in the
planning and construction of sustainable school buildings that
enhance the educational environment and facilitate the learning
process. Schools designed to meet the NY-CHPS Guidelines
incorporate principles of durability, ease of maintenance,
utilization of natural resources, and provide long-term benefits
for students and teachers.
These are the very same
principles advocated by guest speaker Chris Huckabee, AIA in his
presentations on “Mold and Masonry” and the “Role of Masonry in
Sustainability” at the 2005 NYSCMA Spring Masonry Tech Day and
Trade Show. The lead architect and author of the Guidelines for
NYSED Facilities Planning was in the audience, and was
influenced by Chris’ presentations to write the Guidelines
materials section with a strong preference for the use of
concrete masonry as well as other durable cement based products.
To download Chris’ presentations, visit
www.nys.org.
NYSED states that the
NY-CHPS Guidelines help designers and school districts
understand the true life-cycle cost of a school, focusing not
just on initial construction costs, but also including energy,
maintenance and replacement costs as well. School construction
bonds are typically distributed over long financing periods, up
to 30 years. New school buildings must employ building
materials and construction technology that outlast the bonds
that pay for them. NY-CHPS helps designers and school officials
select building materials and technologies based on overall
life-cycle cost of ownership and the best interests of the
building’s occupants.
High
Performance Design is not reserved solely for new construction;
renovation of existing schools represents a significant
opportunity as well. As of 2005, the
average age of New York school buildings exceeded 50 years. As
New York’s school buildings age, many will be scheduled to
undergo significant renovations. The overhaul of these
structures provides school districts with an opportunity to
increase energy efficiency and indoor environmental quality
while maintaining and promoting building durability. Once
again, the opportunity exists for increased use of concrete
masonry and other cement-based products.
Although it is usually
assumed that building high performance schools is more costly,
NYSED maintains that is not always the case. By using an
integrated design process from the start, better buildings can
usually be built at little — and sometimes no — additional
construction cost. This information is confirmed in the Fire
Safe Construction Cost Comparison Study, funded by the Northeast
Regional Fire Safety Construction Advisory Councils and the
Northeast Cement Shippers Association, and authored by Walter
Schneider, P.E., PhD, of Haas Architects Engineers.
The NYSCMA has undertaken
several steps to fulfill the NYSED request for assistance in
the promotion of the NY-CHPS Guidelines across New York State.