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2023 Interstate 95 Bridge Collapse
On June 11, 2023, a tanker truck carrying gasoline caught fire beneath the overpass that carries Interstate 95 (I-95) at the Pennsylvania Route 73 (PA 73, Cottman Avenue) interchange in the Tacony neighborhood of Northeast Philadelphia. The extreme heat caused the northbound lanes to collapse and damaged the southbound lanes, closing roughly of both directions of I-95, between the Betsy Ross Bridge/Aramingo Avenue (exit 26) and PA 63/Woodhaven Road (exit 35). The swift construction of a temporary roadway enabled traffic to resume on June 23, less than two weeks after the fire. The incident recalled the 2007 collapse of a connector in the MacArthur Maze in Oakland, California, and the 2017 collapse of an I-85 overpass in Atlanta, Georgia. Background The area affected by the crash carried about 160,000 vehicles daily. The highway span was 10 to 12 years old and had appeared structurally sound. It had also been part of a $212 million reconstru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Federal Highway Administration
The Federal Highway Administration (FHWA) is a division of the United States Department of Transportation that specializes in highway transportation. The agency's major activities are grouped into two programs, the Federal-aid Highway Program and the Federal Lands Highway Program. Its role had previously been performed by the Office of Road Inquiry, Office of Public Roads and the Bureau of Public Roads. History Background With the coming of the bicycle in the 1890s, interest grew regarding the improvement of streets and roads in America. The traditional method of putting the burden on maintaining roads on local landowners was increasingly inadequate. In 1893, the federal Office of Road Inquiry (ORI) was founded; in 1905, it was renamed the Office of Public Roads (OPR) and made a division of the United States Department of Agriculture. Demands grew for local and state government to take charge. With the coming of the automobile, urgent efforts were made to upgrade and moderniz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of U
A list is a set of discrete items of information collected and set forth in some format for utility, entertainment, or other purposes. A list may be memorialized in any number of ways, including existing only in the mind of the list-maker, but lists are frequently written down on paper, or maintained electronically. Lists are "most frequently a tool", and "one does not ''read'' but only ''uses'' a list: one looks up the relevant information in it, but usually does not need to deal with it as a whole". Lucie Doležalová,The Potential and Limitations of Studying Lists, in Lucie Doležalová, ed., ''The Charm of a List: From the Sumerians to Computerised Data Processing'' (2009). Purpose It has been observed that, with a few exceptions, "the scholarship on lists remains fragmented". David Wallechinsky, a co-author of '' The Book of Lists'', described the attraction of lists as being "because we live in an era of overstimulation, especially in terms of information, and lists help ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Livestreaming
Livestreaming, live-streaming, or live streaming is the streaming of video or audio in real time or near real time. While often referred to simply as ''streaming'', the real-time nature of livestreaming differentiates it from other non- live broadcast forms of streamed media such as video-on-demand, vlogs and video-sharing platforms such as YouTube and TikTok. Livestreaming services encompass a wide variety of topics, including social media, video games, professional sports, and lifecasting. Platforms such as Facebook Live, Periscope, Kuaishou, Douyu, bilibili, YouTube, and 17 include the streaming of scheduled promotions and celebrity events as well as streaming between users, as in videotelephony. Livestreaming sites such as Twitch have become popular outlets for watching people play video games, such as in esports, Let's Play-style gaming, or speedrunning. Live coverage of sporting events is a common application. Chat rooms are a key feature in livestreaming, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Webcam
A webcam is a video camera which is designed to record or stream to a computer or computer network. They are primarily used in Videotelephony, video telephony, live streaming and social media, and Closed-circuit television, security. Webcams can be Built-in function, built-in computer hardware or Peripheral, peripheral devices, and are commonly connected to a device using USB or Internet protocol suite, wireless protocol. Webcams have been used on the Internet as early as 1993, and the first widespread commercial one became available in 1994. Early webcam usage on the Internet was primarily limited to stationary shots streamed to web sites. In the late 1990s and early 2000s, instant messaging clients added support for webcams, increasing their popularity in video conferencing. Computer manufacturers later started integrating webcams into laptop hardware. In 2020, the COVID-19 pandemic caused a shortage of webcams due to the increased number of people Remote work, working from hom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Recycled Glass
Glass recycling is the processing of waste glass into usable products. Glass that is crushed or imploded and ready to be remelted is called cullet. There are two types of cullet: internal and external. Internal cullet is composed of defective products detected and rejected by a quality control process during the industrial process of glass manufacturing, transition phases of product changes (such as thickness and colour changes) and production offcuts. External cullet is waste glass that has been collected or reprocessed with the purpose of recycling. External cullet (which can be pre- or post-consumer) is classified as waste. The word "cullet", when used in the context of end-of-waste, will always refer to external cullet. To be recycled, glass waste needs to be purified and cleaned of contamination. Then, depending on the end use and local processing capabilities, it might also have to be separated into different sizes and colours. Many recyclers collect different colours of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foam Glass Gravel
Foam glass gravel is a building material made from glass recycling, recycled glass. Characteristics Foam glass gravel is light and dimensionally stable, with a R-value (insulation)#U-factor.2FU-value, lambda rating of 0.08 W/mK and a specific weight of 150 kg per cubic metre. Being made from glass, the aggregate is non-combustive and inert, ageing resistant, pH neutral and insect and rodent resistant. The manufacturing process seals the air bubbles giving the gravel non-capillary properties. The material has a high compressive strength as well as insulatory properties making it ideal for insulated floor construction Sourcing and manufacture Glass shards are cleaned and milled to a powder before a foaming agent, active carbon, is added in either liquid or solid form. The material is passed through a continuous tunnel furnace and heated to a temperature of 800–900 °C. Optimum temperatures produce maximum quantities of the foamed product. The foamed molten glass brea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
