- Presenters:
- Stewart Abrams
- Duration:
- 41 Minutes
- Format:
- Audio and Video
- License:
- Short Description:
- Richard Miller Treatment Plant is a 240 mgd cap. potable water treatment facility located in the California area of the Cincinnati, Ohio, US. After installing an advanced ultraviolet (UV) disinfection treatment system in 2013, GCWW became the largest water utility in North America to use UV light following sand filtration and granular activated carbon. The concrete filter gallery building was originally constructed in 1907 with 26 filters, with a 14-filter addition in 1937 and 7 filters added in 1964. After over 110 years of service, the structures started showing significant signs of deterioration, most commonly concrete spalling and reinforcing steel corrosion. This case study will highlight the methods used to evaluate the structures that involved conventional methods such as sounding, crack mapping, chemical and petrographic examinations, along with technology such as Half-Cell Potential/ICOR, Impact-Echo, Ground Penetrating Radar, and UAS (Drone) services.
- Price:
- $15.00 - $25.00
- Presenters:
- Michael Sprinkel
- Duration:
- 37 Minutes
- Format:
- Audio and Video
- License:
- Short Description:
- The prestressed beams in the Hampton Roads Bridge Tunnel Approach Spans were fabricated in about 1960 (west bound lane) and 1970 (east bound lane). The spans are 50-ft and 75-ft, respectively. The brackish water environment caused corrosion and failure of the bottom strands and deterioration and spalling of the cover concrete in many beams. A project in 2018 strengthened 30 of the more deteriorated beams as an alternative to posting or replacing the bridges. Carbon fiber composite wrap (CFCW) and external post-tensioning (PT) were used to strengthen the beams. Prior to construction, a PT mockup was done with one 50-ft (flexible filler) and one 75-ft (grout) beam to demonstrate that the contractor had the materials, equipment and staff to successfully do the external PT. This presentation describes the project’s mockups and construction and the anticipated increase in strength to be obtained from application of the CFCW and external PT.
- Price:
- $15.00 - $25.00
- Presenters:
- Andy Garver | Tim Ekberg
- Duration:
- 43 Minutes
- Format:
- Audio and Video
- License:
- Short Description:
- Technology is not limited to innovative materials or equipment on a jobsite. Digital technology is changing how teams operate and is dramatically increasing efficiency and effectiveness. Cloud-based project management software allows key stakeholders to consolidate project data on to one mobile platform for easy collaboration. The entire project team, from general contractors, specialty contractors, owners, architects, engineers, conservators, and others can exchange data and documents with the tap of a screen. Communication between the field and the office is streamlined where everyone has access to real-time project details. This helps avoid duplicate entry errors and rework because teams built from an outdated drawing. In addition to drawings and details, project management software brings contracts, submittals, RFIs, billings, safety reporting, meeting minutes, photos, and financial reporting into one platform.
- Price:
- $15.00 - $25.00
- Presenters:
- Kristian Krc | David T Ford
- Duration:
- 44 Minutes
- Format:
- Audio and Video
- License:
- Short Description:
- Arrowhead Stadium originally opened in 1972 and is known to be the home to the Super Bowl Champions Kansas City Chiefs. Renovations of the stadium completed in 2010 included adding luxury suites on the club level of the stadium. This meant that the upper seating bowl not only had to seat more than 34,000 Chief fans but also act as a "roof" for the new luxury suites. The upper seating bowl comprises L-shaped precast concrete seating risers spanning from cast-in-place concrete raker beams and is divided by sixteen expansion joints. In 2018, the planning for the upper seating bowl waterproofing program began. The goal for the repair project was to implement waterproofing upgrades to protect the concrete for the next 10 years. To add to the challenge of a large-scale waterproofing and structural repair project, the construction efforts had to include coordination with simultaneous seat replacement to be completed in a single off-season.
- Price:
- $15.00 - $25.00
- Presenters:
- Kelly Streeter | Daniel Gordeyeva
- Duration:
- 42 Minutes
- Format:
- Audio and Video
- License:
- Short Description:
- This presentation will look at how technology is used to perform condition assessments at height and in places with difficult access utilizing a virtual toolbox that includes a wide range of instruments and tools for non-destructive evaluation and testing, and a fleet of drones, each of which has a different use. The presentation will discuss how to use drones and tools at height; how the industry is using drones in new ways; and how some municipalities are changing policies to adapt, especially with regard to facade inspections.
- Price:
- $15.00 - $25.00
- Presenters:
- Shayan Yazdani
- Duration:
- 40 Minutes
- Format:
- Audio and Video
- License:
- Short Description:
- Arlington Memorial Bridge is a reinforced concrete spandrel arch bridge that connects Washington, DC and Virginia across the Potomac River. After over 85 years in service, the bridge started exhibiting signs of deterioration, including reinforcement corrosion. As part of a major rehabilitation effort to extend the bridge’s service life, targeted cathodic protection (CP) systems were installed in the arch cross-walls, floors, and under arches to mitigate and prevent corrosion. The implemented CP system consisted of galvanic and two-stage anodes to mitigate corrosion. Galvanic anodes were installed in the repair areas to prevent the ring anode affect and ensure a durable concrete repair. The two-stage anodes were installed in areas of concrete which were actively corroding without signs of concrete deterioration.
- Price:
- $15.00 - $25.00
- Presenters:
- Charu Chaudhry
- Duration:
- 44 Minutes
- Format:
- Audio and Video
- License:
- Short Description:
- Historic 19th and 20th century buildings are currently facing the necessity of meeting contemporary needs such as adaptive re-use, energy efficiency, stability, and durability. The characteristics of architecture of these periods (i.e., material, design, details, maintenance, and functionality) increasingly make it challenging to maintain authenticity while incorporating new uses. Various strategies of technical interventions can be employed to achieve good results. This presentation will cover the case study of abandoned historic hospital pavilions from the early 20th century which are being converted into a high-end residential complex. The buildings face multiple challenges related to adaptive re-use, as they will be restored and connected with new infills and a glass connector and capped with re-creation of the historic cornices.
- Price:
- $15.00 - $25.00
- Presenters:
- H. Peter Golter, P.E. FICRI
- Duration:
- 41 Minutes
- Format:
- Audio and Video
- License:
- Short Description:
- This presentation looks at buildings that are new or being rehabilitated and the impact on making buildings more energy efficient. Starting with the 2012 IBC, and specifically the 2012 IECC portion of the building code and newer versions, the presentation will look at three aspects of the building envelope: Water Resistance, Air Leakage, and Moisture Transmission. It will then compare to identical buildings, the first built in 2000 and the second constructed in 2020. Illustrations and calculations will show how controlling air leakage can have an enormous impact on the service life of the structure, initial cost of construction, and on-going operations. Lastly, the presentation will look at how incorporating simple additions during the repair/rehabilitation process can have a positive impact on the environment as well as the building owner and the building’s constituents.
- Price:
- $15.00 - $25.00
- Bundle:
- Fall Conference Bundle
- Presenters:
- Billy D. James, P.E.
- Duration:
- 22 Minutes
- Format:
- Audio and Video
- License:
- Access for 6 month(s) after purchase.
- Short Description:
- Post-tensioned concrete is a strong and durable material for construction of exposed parking structures. These types of structures are also fire resistant, but they can be damaged depending upon the severity of the fire. The structure in this presentation suffered significant fire damage early in its construction. The presentation will cover the discovery and testing methods used to determine the extent of fire damage, and the design of the repairs that were instituted to restore strength and allow construction to continue.
- Price:
- $15.00 - $25.00
- Presenters:
- Mike Tracy
- Duration:
- 43 Minutes
- Format:
- Audio and Video
- License:
- Access for 6 month(s) after purchase.
- Short Description:
- Increasingly, the Construction Industry is being dramatically impacted globally by internal and external forces. These influences range from acute labor and skill shortages, demographic and urbanization shifts, as well as, the Industry’s conversion from analog-based processes to digital workflows. This presentation will overview ten significant trends which are uniquely affecting the Construction Industry, creating both new challenges and opportunities, while transforming the Construction Industry.
- Price:
- $15.00 - $25.00
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