. 24/7 Space News .
Metal membranes in construction: From Russia with love
by Staff Writers
Moscow, Russia (SPX) Nov 21, 2017

This is the cycle track 'Krylatskoye' - sports facility in Moscow, in the Krylatskoye district.

RUDN University professor brought together disparate information about metal membrane suspended roofs, that allow designing buildings with large spans. These structures are used in the construction of sports complexes, airports and some other buildings. An op-ed article was published in Thin-Walled Structures.

"Metal membranes are used much less often than other types of suspended roofs (among which one can distinguish awning or mesh metal structures, sheaths of glued wood). It is interesting that Russia has an unconditional priority in this type of constructions: they were first used abroad only 35 years later in the US, when they were developed by architect Vladimir Shukhov for 4 pavilions at the All-Russia industrial and art exhibition in Nizhny Novgorod", Head of the Department of Strength of Materials and Structures of RUDN University Sergey Krivoshapko said.

Metal membrane suspended roofs are spatial constructions of thin metal sheet, which is only a few millimeters thick, and rigid support contour. They can be compared with a soap pellicle formed after immersion of a wire ring into a diluted dishwashing liquid. Just like a bubble, which is blown out of the contour, a metal membrane can have different curvatures.

In fact, the shape of the design, more precisely, of its middle part, is determined by the geometry of the frame to which it is mounted and by the presence of weighting agents. Thanks to them, it is possible to create a membrane in the form of a paraboloid, cone or sphere. Spans with metal membrane roofing can reach hundreds of square meters.

For example, the universal stadium at Mira Avenue measuring 224+ 183 m, which was the largest building of the 1980 Olympics, is roofed by a 5 mm thick sagging membrane. The structure only seems to be fragile: the technology involves complex engineering calculations that take into account the climate, metal used for the construction, as well as load created both by the weight of the membrane itself and by falling snow.

From a technical point of view, the advantage of metal membranes is that they allow to significantly reduce the weight of the structure, its cost (up to 60%) and material consumption (for steel up to 70%). Moreover, the structure itself implies combination of bearing and enclosing functions in one material.

"Design features of metal membrane suspended roofs determine their cost-effectiveness. Although nowadays almost all the problematic issues concerning the design, manufacturing, installation and operation of metal membranes are theoretically solved, few design bureaus and organizations are ready to take up work.

The study of the preconditions for the appearance of functional solutions in construction, the history of development and the improvement of construction technologies will allow us to summarize the experiences accumulated over decades and issue a fundamentally new solution. Otherwise, architects and engineers will have to replicate what has already been achieved in construction and architecture", Sergey Krivoshapko concludes.

Research paper

Ink from ancient Egyptian papyri contains copper
Copenhagen, Denmark (SPX) Nov 21, 2017
Until recently, it was assumed that the ink used for writing was primarily carbon-based at least until the fourth and fifth centuries AD. But in a new University of Copenhagen study, analyses of 2,000-year-old papyri fragments with X-ray microscopy show that black ink used by Egyptian scribes also contained copper - an element previously not identified in ancient ink. In a study published ... read more

Related Links
RUDN University
Space Technology News - Applications and Research

Thanks for being there;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.
SpaceDaily Monthly Supporter
$5+ Billed Monthly

paypal only
SpaceDaily Contributor
$5 Billed Once

credit card or paypal

Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

New motion sensors major step towards cheaper wearable technology

Can a magnetic sail slow down an interstellar probe

SSL Selected to Conduct Power and Propulsion Study for NASA's Deep Space Gateway Concept

MDA Selects AdaCore's GNAT Pro Assurance Development Platform for ISS Software

Aerojet Rocketdyne supports ULA Delta II launch of JPSS-1

Old Rivals India, China Nurture New Rivalry in Satellite Launch Business

NASA launches next-generation weather satellite

SpaceX postpones launch of secretive Zuma mission

Winds Blow Dust off the Solar Panels Improving Energy Levels

Recurring Martian Streaks: Flowing Sand, Not Water?

From Hannover around the world and to the Mars: LZH delivers laser for ExoMars 2020

NASA Selects Instrument for Future International Mission to Martian Moons

China plans for nuclear-powered interplanetary capacity by 2040

China plans first sea based launch by 2018

China's reusable spacecraft to be launched in 2020

Space will see Communist loyalty: Chinese astronaut

Space Launch plans UK industry tour

Astronaut meets volcano

European Space Week starts in Estonia

New Chinese sat comms company awaits approval

New way to write magnetic info could pave the way for hardware neural networks

Borophene shines alone as 2-D plasmonic material

Metal membranes in construction: From Russia with love

Spin current from heat: New material increases efficiency

Lava or Not, Exoplanet 55 Cancri e Likely to have Atmosphere

Images of strange solar system visitor peel away some of the mystery

Familiar-Looking Messenger from Another Solar System

Space dust may transport life between worlds, research suggests

Pluto's hydrocarbon haze keeps dwarf planet colder than expected

Jupiter's Stunning Southern Hemisphere

Watching Jupiter's multiple pulsating X-ray Aurora

Help Nickname New Horizons' Next Flyby Target

The content herein, unless otherwise known to be public domain, are Copyright 1995-2024 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. General Data Protection Regulation (GDPR) Statement Our advertisers use various cookies and the like to deliver the best ad banner available at one time. All network advertising suppliers have GDPR policies (Legitimate Interest) that conform with EU regulations for data collection. By using our websites you consent to cookie based advertising. If you do not agree with this then you must stop using the websites from May 25, 2018. Privacy Statement. Additional information can be found here at About Us.