142 | CONCRETO & Construções
para escrever a história de
um país, é preciso cuidar dele.
Para um país crescer, é preciso investimento. Mas é necessário também pensar no meio
ambiente, na sociedade e nas futuras gerações.
A indústria do cimento investe em qualidade e utiliza as tecnologias mais avançadas para
promover um desenvolvimento sustentável. Colabora ainda para tornar o meio ambiente mais
limpo com o co-processamento: a destruição de resíduos industriais e pneus em seus fornos.
Onde tem gente tem cimento.
FSB
have discovered the benefits of
using post-tensioning and pro-
mote its use with their privately
negotiated clients. However with-
out many publicly bid projects,
there is no concerted effort to
train masons in the technology.
SUMMARY
Post-tensioning masonry has
many benefits and many opportuni-
ties to expand the overall use of ma-
sonry. It also is useful as a design
tool to solve some unique engineer-
ing projects where precast concrete
might otherwise be used as a second
choice alternative.
For more technical information and
example calculations on post-ten-
sioned masonry in the United States,
refer to NCMA TEK Notes “14-20A ,
Post-tensioned Masonry Wall Design”
and “3-14, Post-tensioned Concrete
Masonry Wall Construction”. These
documents are available free as down-
loads at
. In addition,
The Masonry Society’s Masonry De-
signers Guide has similar design infor-
mation (
.
ACKNOWLEDGEMENTS
Hans R. Ganz of VSL Corpora-
tion for his research and guidance
throughout the US code development
for post-tensioned masonry. Profes-
sor Arturo Schultz of the University of
Minnesota for his review and thought-
ful comments, and his on-going re-
search on prestressed masonry.
[01] Biggs, D.T. and Ganz, H.R., “The Codification of Prestressed Masonry in the United States”, Proceedings, Fifth International Masonry Conference, London, UK,
October 1998, pp. 363-366
[02] Schultz, A.E. and Scolforo, M.J., “An Overview of Prestressed Masonry,” TMS Journal, Vol. 10, No. 1, pp. 6-21, The Masonry Society, Longmont, CO, 1991.
[03] Schultz, A.E. and Scolforo, M.J., “Engineering Design Provisions for Prestressed Masonry, Part 1: Masonry Stresses,” TMS Journal, Vol. 10, No. 2, pp. 29-47, The
Masonry Society, Longmont, CO, 1992.
[04] Schultz, A.E., and Scolforo, M.J., “Engineering Design Provisions for Prestressed Masonry, Part 2: Steel Stresses and Other Considerations,” TMS Journal, Vol.
10, No. 2, pp. 48-64, The Masonry Society, Longmont, CO, 1992.
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