The Use of Electronic Leak Detection (ELD) on Waterproofing Membranes over Concrete Surfaces

Waterproofing membranes are a key element in building enclosure systems—a key element that ultimately gets covered up by a variety of finish materials including landscaping, green roofs, topping slabs, pavers and so on. As most of us know, excavation to expose a failed waterproofing membrane for repairs can be prohibitively expensive and in some cases impossible. For this reason, many designers are choosing to specify integrity testing to verify that the waterproofing membrane is free of discontinuities and penetrations through the membrane prior to the installation being permanently covered. When integrity testing is not specified, many contractors are often performing this type of testing voluntarily to avoid future problems or “call-backs.”

The most common integrity testing method is the flood test. Flood testing is typically performed by flooding waterproofed horizontal surfaces with at least two inches (50 mm) of water for a period of up to 48 hours. Temporary dams are often constructed to partition the test areas, provide an up-turned plaza edge and control the depth of the flood testing. During the flood test, access to the underside of the flooded areas is necessary for a visual inspection of water leakage. However, in the case of a membrane failure (leak), flood testing indicates only where water is penetrating through the entire assembly within the test area, not the location above where water is breaching the membrane. In addition, flood testing cannot be performed on vertical surfaces or at locations where the underside of the slab is not accessible.

The aforementioned restrictions and lack of conclusive data associated with flood testing has enabled Electronic Leak Detection (ELD) to gain momentum as a viable alternative to traditional flood testing. This article will focus on the different types of ELD and the applications where ELD is or is not well-suited.


READ FULL ARTICLE HERE

Terra-Petra ELD information

Allen Matkins/UCLA Anderson – California Commercial Real Estate Survey


As providedthe introduction to this survey, by John M. Tipton Partner, Real Estate Department Allen Matkins:

Allen Matkins and UCLA Anderson Forecast have partnered to create a Commercial Real Estate Survey and Index to better predict future California commercial rental and vacancy rates. This tool surveys supply-side participants – commercial developers and financiers of commercial development – for insights into their markets. The Survey and the resulting Index provide a measure of the commercial real estate supply-side participants’ view of current and future conditions. Since participants make investment actions based upon these views, it provides a leading indicator of changing supply conditions.

Allen Matkins sponsored this Survey to provide value to the industry. Partnered with UCLA Anderson Forecast, the leading independent economic forecast of both the U.S. and California economies for over 65 years, they have tapped the knowledge of the leading developers and financiers of real estate development in California to provide the best, clear-sighted forecast of the California commercial real estate industry. Read they Survey and Index here.

LA Unified School District Awards Terra-Petra Certification of Small Business Enterprise (SBE)

The Los Angeles Unified School District (LAUSD) issued Terra-Petra an SBE certificate effective October 26, 2016.

The company's SBE status lausdcertificationofsbeis recognized for NAICS codes:

541620 & 541330 through October 2018.

To maintain a valid SBE Certificate after three years with LAUSD, Terra-Petra must also renew its self-certification with LAUSD or register with the Small Business Administration before the SBE certification expiration date referenced expires.

Letter of approval.

Terra-Petra performs subterranean waterproofing inspections for new Academy Museum project

Terra-Petra heads environmental engineering and waterproofing design, inspection and systems for the new $300-Million Academy Museum project at Wilshire and Fairfax Avenue which is slated to complete in 2018. 

STEVEN SHARP
June 14, 2016 for Urbanize.LA.

Even June Gloom failed to put a damper on construction at the LACMA campus on the Miracle Mile, where the Academy of Motion Picture Arts and Sciences' (AMPAS) long-awaited museum is well underway.

The $300-million undertaking, located at Wilshire Boulevard and Fairfax Avenue, will create a showcase for AMPAS' vast collection of filmmaking artifacts, including tens of thousands of still photographs, screenplays, production and costume design drawings, manuscripts and storyboards.  These assets will be displayed through a series of galleries, exhibition spaces, educational spaces and on-site theaters.

The museum, designed by the famed Italian architect Renzo Piano, will restore the May Company Wilshire department store, a Streamline Moderne structure built  in 1938.  North of the historic building, the project will add an eye-catching spherical glass structure, replacing a surface parking lot and a 1946 annex to the department store.

Completion of the Academy Museum is expected in Spring 2018.

950 E Third St development breaks ground in DTLA – Terra-Petra Contributor

Terra-Petra contributes environmental construction services for the developer of one of the newer projects in downtown Los Angeles. The $215M mixed-use development that broke ground March 2016 is scheduled to compelete at the end of the year in 2017. 

NEW RENDERINGS OF ARTS DISTRICT DEVELOPMENT UNVEILED


 

 

 

 

 

 

 

 

 

 

 

 

 

 


Mar 22, 2016 Karen Jordan, Bisnow,

Fairfield Residential renderings have just been revealed for 950 E Third St, a $215M mixed-use development that broke ground last week in the Arts District. Fairfield Residential and Legendary Development have released in-progress exterior renderings of the project. It will have five- and six-story buildings with 472 studio, one- and two-bedroom apartments along with 22k SF of ground-floor retail, according to Urbanize LA. Amenities include social and sweat lounges, a dog wash and play area, a rooftop deck and a courtyard. Kava Massih Architects is designing the project, which will use similar materials, tones and colors to those of existing buildings throughout the neighborhood.  The project is scheduled to be partially completed by December 2017. [ULA]

Terra-Petra Worked on Residential Component of Huntington Beach’s Pacific City

Colorado based UDR Inc, called upon Terra-Petra environment engineering in 2011 to work with the Bernards (a UDR contractor) in-house design team on Pacific Park, a $135-million shopping center and residential (mixed-use) development in Huntington Beach, California. At the onset, Bernards was faced with an unusual challenge; how to embrace the city’s proud identity as "Surf City" without descending into surfing kitsch. Terra-Petra was tasked to make sure that challenge was met, and it was.

Details about the status of this project has been reported on Terra-Petra's web and other media sites over the years, including the “a Terra-Petra photographic journal” of the Phase I Borrow Soils excavation for the Pacific City project in 2014 – courtesy of David L. Lucero. Terra-Petra is extremely proud of this project and what this development has become today. 

Read more below.

As reported on Urbanize.LA 

Residential Component of Huntington Beach's Pacific City Underway

The project – which was designed by MVE & Partners – is currently rising from a 17-acre site at 21002 Pacific Coast Highway.  Plans call for the construction of six low-rise structures arranged in a crescent shape.  Each building will consist of four levels of wood-frame construction above a concrete podium and an underground parking garage.  Bernards is targeting either LEED Gold or Silver certification for the project.

In total, the development will create 516 residential units, as well as a 12,000-square foot amenity center featuring a swimming pool, a gym and an entertainment center.  The amenity center will also abut a public park.

The residential community – which is being developed Colorado-based UDR, Inc. – is one component of the larger Pacific City complex, which spans 31 acres on a former oil field near the Huntington Beach Pier.  An official website states that Pacific City's retail center will include over 190,000 square feet of shops and restaurants, office space and a 400-key hotel.

For further details about our work with Bernards and the Pacific City project in Huntington Beach, California, please contact Justin Conaway 

Wilshire Grand Tower Topped Off March 2016 – Video Recap

Wilshire Grand Center is a 335-meter (1,099 ft) skyscraper under construction in the Financial District of Downtown Los Angeles, California. The tower will become the tallest building in Los Angeles, the tallest structure and the second tallest building west of the Mississippi River upon completion. The building will be part of a mixed-use hotel, retail, observation decks, shopping malls and office complex, expected to revitalize downtown Los Angeles and the area surrounding the building. The development of the complex is estimated to cost $1 billion. The plans currently include 67,000 square feet (6,225 m2) of retail, 677,000 square feet (62,895 m2) of Class A office space and 900 hotel rooms. InterContinental is the tower's hotel component, comprising 900 rooms and suites occupying the 38th to the 70th floors. Estimated date of completion March 8, 2017. Terra-Petra is proud to have been a part of this project during initial record concrete pour. 

Terra-Petra provides Deputy Inspection Services for DTLA Blossom Plaza

We are honored to have worked on Blossom Plaza with another Los Angeles area environmental engineering firm to provide our Deputy Inspection Services that ensure the integrity and health of this project's land development process in Downtown LA's Chinatown. 

Blossom Plaza Takes Form in Chinatown – Long awaited mixed-use development rises near Chinatown Station.

Read this Story via Urbanize.LA 

Blossom Plaza Takes Form in Chinatown
Blossom Plaza Takes Form in Chinatown

 

Oceanwide Plaza – now under construction in Downtown Los Angeles

"We've been involved with the Oceanwide Plaza project going back more than 11 years. It's good to see the project finally break ground and to see the team's vision becoming Oceanwide Plaza Downtown Los Angeles, Californiaa reality," says Justin Conaway, Terra-Petra Vice President and General Manager. 

DOWNTOWN'S $1B OCEANWIDE PLAZA
Patricia Kirk, Bisnow

Representing China’s Oceanwide Real Estate Group, local brokerage firm Kennedy Wilson has established a new website for Downtown LA’s $1B Oceanwide Plaza, which is under construction, and posted new renderings of the project.

Designed by the Los Angeles office of RTKL, the nearly 1.5M SF development on a 4.6-acre site at 1101 S Flower St includes three high-rise residential towers with 503 condos and 183 hotel rooms, 167k SF of retail space and 1,444 parking spaces.

Plans also call for a series of pedestrian paseos between Figueroa and Flower streets, a 37k SF open-air deck atop the retail space, and large public plaza for visitors to sit and enjoy the modern landscape, according to Urbanize LA. Additionally, a 32k SF LED ribbon, possibly the largest on the West Coast, will wrap the building's podium along Figueroa between 11th and 12th streets. [ULA

Oceanwide Plaza Downtown Los Angeles, California Oceanwide Plaza Downtown Los Angeles, California

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Read more 

Terra-Petra Sponsors the Environmental Law Conference at Yosemite® October 22-25, 2015

Terra-Petra Environmental Engineering will participate in the ENVIRONMENTAL LAW CONFERENCE AT YOSEMITE® this Thursday, October 22 through Sunday, October 25 at the Tenaya Lodge  (“The Gateway to Yosemite”). As a sponsor of this event, Terra-Petra will be giving away candy and stress balls to all who stop by to visit at the Terra-Petra team's table in between conference sessions. The Environmental Law Conference at Yosemite® is nationally recognized as the largest and most prestigious gathering in California of leaders in environmental, land use, and natural resources law. 

Yosemite National Park - Celebrating 150 YearsConference attendees will earn 11.25 Hours MCLE Credit, of which1.5 Hours Applies to Elimination of Bias in the Legal Profession.

Following a long tradition of outstanding conferences, the year's event will feature an exciting line-up of speakers including California Environmental Protection Agency Secretary Matthew Rodriquez, Mayor Ashley Swearengin, Professor Manual Pastor, Professor Jody Freeman, Professor Richard Lazarus, photographer James Balog, and many others.Conference Program Materials and Merchandise

Conference registrants will receive a USB storage device with an electronic version of all program materials complements of West, a Thomson Reuters business. Before the Conference attendees will receive a link with information on how to review and download the Yosemiteprogram materials from the Internet. It may be helpful to review a program’s reference materials before the class, so please take a moment to check the materials for classes you plan to attend. This website is not available to the public, and access is given only to Conference registrants. Late-breaking supplemental materials not available before the Conference will be added to this site at a later date. We are pleased to announce that wireless Internet service will be available in all education program rooms, compliments of Caldwell Leslie & Proctor PC.

Essential Information
Program Schedule
Sponsorships
Printable Brochure

 

 

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