15 Photos from 2015: Numbers 11 and 10

We’re counting down to the New Year by sharing 15 of our favorite photographs taken on site and during our travels throughout 2015.

#11 Western New York bridges

11 Western NY bridges

Looking down from a pair of steel-arch highway bridges, with a third steel truss bridge in the background

#10 Washington, DC

10 Washington DC

A curious deer watches a VA technician on rope

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15 Photos from 2015: Numbers 13 and 12

We’re counting down to the New Year by sharing 15 of our favorite photographs taken on site and during our travels throughout 2015.

#13 Trenton, NJ

13 Trenton

The Lower Trenton Bridge with its iconic 1935 sign, a Chamber of Commerce slogan promoting the city’s manufacturing businesses.

#12 Central Park

12 Central Park

Taken on a rainy day last January.

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15 Photos from 2015: Numbers 15 and 14

We’re counting down to the New Year by sharing 15 of our favorite photographs taken on site and during our travels throughout 2015.

#15 St. Mark’s Church in-the-Bowery, New York City

15 St. Marks

Cast iron fence enclosing the churchyard of the second-oldest church building in Manhattan

#14 Annapolis, MD

14 Annapolis

View of the Maryland State House and the Colonial Annapolis Historic District

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Industrial Rope Access vs. Conventional Fall Protection : National Safety Codes Evolve to Acknowledge Differences

Vertical Access has been a voting member of the American National Standards Institute (ANSI) / American Society of Safety Engineers (ASSE) Z359 Committee on Fall Protection since 2001.  The mission statement of the committee, in part, is to “produce voluntary national consensus standards to protect workers at height”.

These standards are intended for those involved in general industry fields.  “General Industry”, a term coined by the Occupational Safety and Health Administration (OSHA), includes all industries that are outside of the agriculture, construction or maritime industries.  Being classified as general industry, Vertical Access’s work conducting condition inspections falls under the territory of the ANSI Z359 Fall Protection Code. Learn more about the differences between ANSI and OSHA here.

Clockwise from lower left: DMM Double Stop, Rack, Petzl Stop, CMI Rescue 8, Petzl I'D

Descent Controllers. Clockwise from lower left: DMM Double Stop, Rack, Petzl Stop, CMI Rescue 8, Petzl I’D

VA’s primary contribution to the Z359 committee has been to advocate for the inclusion of industrial rope access (IRA) techniques and equipment in this highly respected fall protection code.  For the last three years, Kelly Streeter has been the chairperson responsible for developing the section of the code outlining requirements for descent controllers.  Although a critical component of equipment in the IRA work environment, descent controllers also play a role in other vertical environments including one-time-only rescue situations (from amusement park rides and ski lifts, for example).  Keith Luscinski has been an active member of several committees.

Because industrial rope access techniques and equipment can differ significantly from those employed in conventional fall protection systems, a section of the fall protection code, titled Z359.8, Safety Requirements for Rope Access Systems was created.  Under the chairmanship of Loui McCurley of the Society of Professional Rope Access Technicians (SPRAT) the subcommittee has labored to create a comprehensive IRA section of the code, a difficult task because of the significant departures in training requirements, work techniques and equipment selection from conventional fall protection.

For instance, a rope access backup device has different requirements than an ANSI Z359.15 fall arrester. For example, a fall arrest system may allow a worker to fall up to 11 feet, whereas a backup device in rope access would only ever allow a factor 2 fall on a 24” lanyard.  Therefore the design, performance and testing requirements are significantly different.

The repeatedly voiced concern from the full ANSI Z359 committee is that the inclusion of rope access equipment with different performance requirements may be confused on site with similarly marked conventional fall protection equipment.  Finally, after more than a decade of work, which saw much resistance to the inclusion of IRA in the ANSI Z359 code and many reversals of direction from the full committee, a resolution has seemingly been reached.

At the recent October committee meeting in Chicago, a group of rope access professionals, including Sam Terry (Sparkling Clean Window Company), Shaun Reed (US Bureau of Reclamation), Keith and Kelly, presented the Z359.8 document in its current form to the full committee and spent an hour discussing and addressing concerns from the full committee.  Near the end of the hour, an idea was suggested that the Z359.8 standard continue to be a part of the Fall Protection Code but bear a number other than Z359.  This would allow the rope access community to continue to draw upon the knowledge base of the full committee, while assuaging concerns that the equipment markings might be confused.  Also, many of the manufacturers on the full committee make both conventional fall protection equipment and rope access equipment, and the new organizational system will keep all the committees under one roof.

A win for all.

 

How the Tent of Tomorrow Got its New Coat of Paint

Predicted by its organizers to be the “greatest single event in history,” the 1964-65 New York World’s Fair was indeed a spectacle. One of the most notable structures of the Fair, and one of the few that still stands, is the New York State Pavilion. Looking to create a symbol of progress and to show off the state’s status as host of the Fair, Governor Rockefeller commissioned Philip Johnson, who worked with structural engineer Lev Zetlin, to design the New York State Pavilion. The pavilion was in fact an assemblage of three separate structures: the open-air Tent of Tomorrow, three interconnected Observation Towers, and the circular Theaterama.

The Tent of Tomorrow was used for several years after the end of the Fair in 1965, first for music and art shows, then as the “Roller Round Skating Rink.” In the summer of 1974, the City closed the tent structure, citing the “hazardous condition” of the Kalwall roof panels. The multicolored roof panels were removed in 1976, leaving the structure in more or less its current state.

Although unused for over forty years, the Tent of Tomorrow is showing new life thanks to the work of New York area painters. The City of New York Department of Parks and Recreation (DPR) who owns the structure, teamed with the New York Structural Steel Painting Contractors Association and the International Union of Painters and Allied Trades, Local 806 (Structural Steel and Bridge Painters of Greater New York) to complete a spectacular painting project during the summer of 2015.

Labor for the painting project was donated through apprenticeship programs of the trade groups. Funding to provide meals for the crew during the work was raised through crowdsourced funding. The paint job not only returns the steel elements of the Tent of Tomorrow to their original appearance, it also helps to protect the structure from continued corrosion and deterioration. The painting project is one step in the long process being undertaken by DPR and the borough of Queens to stabilize and hopefully one day restore the Tent of Tomorrow and Observation Towers of the New York State Pavilion.

Photos by Vertical Access.

Exploring 3D Photogrammetry

Dozens of software options are available for stitching photographs into scaleable, 2D mosaics or 3D models. We’ve been experimenting with a few different platforms for generating 3D models using footage captured by our DJI Phantom UAV (drone) or by technicians on the ground.

In the example below, the photogrammetry software could not accurately render the metal roof of our shed because the photos used to create the model were taken by a person on the ground. Achieving a higher angle of view, for example, by using a UAV, the software would have created a more complete model. This 3D model was built using only 51 images.

shed point cloud

3D model created using photogrammetry

Some programs can output a 2D elevation or plan extracted from the 3D model, which can be used to create scale drawings with centimeter accuracy.

orthorectified image generated from a 3D model

orthorectified 2D image generated from a 3D model

These outputs can be used as background drawings for a hands-on survey using TPAS, or to take measurements of inaccessible features such as antennas or finials.

This fly-through of a barn is of a 3D model created where the green line represents the flight path of the UAV and the dots represent the locations of where photographs were taken.  Enjoy the drone’s-eye view:

https://www.youtube.com/watch?v=PLf_7GYrIH0&feature=youtu.be

Can you identify this building? – Series No. 6

Test your knowledge of historic and iconic buildings in the U.S. (and beyond!) in this series of “guess the building” blog posts.

Series No. 6:

This 25-foot-tall beauty stands atop one of the largest government buildings in the world, a Beaux Arts masterpiece completed in 1914. She holds a five-sectioned mural crown in her left hand, and a shield and laurel branch in her right. Where is this “fame”-ous statue?

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Screen Shot 2015-05-22 at 12.07.05 PM

Screen Shot 2015-05-22 at 12.09.28 PM

Answer: David N. Dinkins Municipal Building, New York, NY. Built to house an expanded city government following the consolidation of the five boroughs in 1898, it was the first skyscraper produced by the firm of McKim, Mead and White. The gilded copper statue atop its cupola is Civic Fame, by sculptor Adolph Weinman. The building was renamed for former Mayor David N. Dinkins in November 2015 in recognition of his decades of public service including a four-year term as mayor.

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Don’t miss another architectural challenge: subscribe to our blog by signing up with your email address in the sidebar. Click here to see all of the posts in this series.

Photos by Vertical Access.

Can you identify this building? – Series No. 7

Test your knowledge of historic and iconic buildings in the U.S. (and beyond!) in this series of “guess the building” blog posts.

Series No. 7:

This 25-foot-tall beauty stands atop one of the largest government buildings in the world, a Beaux Arts masterpiece completed in 1914. She holds a five-sectioned mural crown in her left hand, and a shield and laurel branch in her right. Where is this “fame”-ous statue?

P1000149

Screen Shot 2015-05-22 at 12.07.05 PM

Screen Shot 2015-05-22 at 12.09.28 PM

Answer: David N. Dinkins Municipal Building, New York, NY. Built to house an expanded city government following the consolidation of the five boroughs in 1898, it was the first skyscraper produced by the firm of McKim, Mead and White. The gilded copper statue atop its cupola is Civic Fame, by sculptor Adolph Weinman. The building was renamed for former Mayor David N. Dinkins in November 2015 in recognition of his decades of public service including a four-year term as mayor.

P1100420

Don’t miss another architectural challenge: subscribe to our blog by signing up with your email address in the sidebar. Click here to see all of the posts in this series.

Photos by Vertical Access.

APT Annual Conference in Kansas City

Earlier this month, Kent Diebolt, Evan Kopelson and Kristen Olson attended the Association for Preservation Technology International annual conference in Kansas City, Missouri. APT is a cross-disciplinary member organization promoting the best technology for conserving historic structures and their settings. The conference theme was Convergence of People and Places—Diverse Technologies and Practices.

One of many neon signs in the Power & Light District

One of many neon signs in the Power & Light District

The diverse technologies were on display in presentations on 3D laser scanning to aid in flood management at religious sites in Southeast Asia; 3D GIS applications to help plan new uses for Flushing Meadows-Corona Park, site of the 1939 and 1964 World’s Fairs; and a creative fusion of high-tech and low-tech to investigate interior plaster conditions in a historic Charleston residence (infrared thermography aided by a hair dryer).

IMG_3796

The historic Mainstreet Theater, reborn as a modern cinema

An exciting possibility for documenting post-disaster sites is the use of mobile apps that allow volunteers to quickly and accurately gather data using customized web forms. Meanwhile, web-based databases such as APT’s OSCAR and the National Building Stone Database are putting valuable data on sustainable practices and restoration materials at the fingertips of practitioners.

IMG_3798

A neon sign for the Drum Room lounge at the historic President Hotel

Several presentations tied the social dimension of preservation to larger national and global issues of justice and human health, with a concept of “whole places” that function on all levels. Case studies demonstrated the successful rehabilitation of unloved, Brutalist-style buildings into vibrant spaces for human interaction.

IMG_3801

Spandrel detail on the Power and Light Building, an iconic Art Deco skyscraper

A full-day symposium, Renewing Modernism, addressed the challenges and opportunities presented by buildings of the Modern era. Many presenters called for flexibility and creativity in bringing 20th century buildings up to 21st century energy standards, with a consensus that different standards of both energy efficiency and preservation should apply to buildings relative to their cultural significance. Presenters cited the sheer volume of Modern buildings that have reached or are approaching the 50-year mark, and the imperative to reuse, rather than discard, this vast inventory of existing buildings.

To learn more about APT, visit www.apti.org. 

Vertical Access was proud to be a Benefactor Sponsor for APT’s 2015 conference.