Girder bridges are built on horizontal support beams made of materials such as steel or concrete. I-beams and box girders are commonly used for straight bridges, while box girders are preferred for longer or curved spans. There are four types of beam bridges, including rolled steel girder, plate girder, concrete I-beam, and box girder bridges. […]
An Ethernet bridge connects different segments of a network, managing data flow to reduce congestion. It overcomes limitations of Ethernet technology and can include other interfaces like Wi-Fi or power grid. An Ethernet bridge is a type of computer networking device that connects two or more distinct segments of a network. It overcomes some inherent […]
Deck truss bridges have triangular beams that distribute weight to the piers, with steel being the most common material. They need to be straight and regularly inspected for tension and signs of deterioration. Truss bridges were first built in the mid-1800s and are still commonly used for both highway and railroad bridges. A deck truss […]
Cantilever bridges use horizontal structures supported on one end only, and can span over 1,500 feet with the right materials and engineering. The first cantilever bridge was built in 1867 by Heinrich Gerber. The Quebec Bridge in Canada holds the record for the longest single cantilever span, while the Forth Bridge in Scotland uses cantilevers […]
A bascule bridge is a drawbridge with two counterweighted leaves that pivot upward to allow vessel traffic to pass. They originated in medieval Europe and were operated by men using a winch and counterweight. Most bascule bridges are double-leaf and have two main types: single leaf and double leaf. There are numerous variations and designs, […]
Bridge mode connects computers through wireless access points (WAPs) to create a network. There are two types of modes: point-to-point and point-to-multipoint. Bandwidth is high, but internet applications may run slower. Security may be an issue in point-to-multipoint mode. Bridge mode is when two or more computers open up to each other, start talking and […]
A bridge oscillator generates sine waves and is often used as an audio frequency oscillator due to its low distortion and ease of tuning. It is based on a bridge circuit with four resistors and two capacitors. The design was first described by William Hewlett in his master’s thesis and later used in HP’s first […]
Proposed bridge designs include features to control the raising and lowering of drawbridges for water ships, while checking and communicating with vehicular, rail, and pedestrian traffic. Bridge tenders are responsible for recording vessel identification, guiding boats through openings, providing life-saving equipment, and inspecting and maintaining the structure. Certification and on-the-job training are required for this […]
Deck beams support the weight of decking and people on a deck and are typically made of 2×12 lumber. They need proper support through deck joists or slot and bolt technique, and must comply with building codes. A deck beam is a support post that supports the weight of decking materials and any person or […]
Concrete bridges are structures made of concrete that allow vehicles or people to cross physical obstacles. Concrete is versatile, strong, and requires less maintenance than other materials. Prestressed concrete bridges use reinforcing bars to counteract stress. Concrete arch bridges use a curved arch as the main support mechanism. High-performance concrete can be used for bridge […]
TOEIC Bridge is an exam for testing beginner to intermediate level English comprehension skills. It consists of 100 multiple-choice questions to be answered in 60 minutes and a questionnaire to be completed in 30 minutes. The exam measures listening and reading comprehension skills and is a prerequisite for the regular TOEIC tests. The listening section […]
Box girder bridges are a common style of bridge with support beams bolted together to form a hollow box shape. They offer sturdier construction, are often made of prefabricated steel or concrete, and can be moved to another location. They are commonly used in highway overpasses and can support heavier loads. However, they can be […]
Bridge bearings are used to transfer forces from the deck to the foundation without damage. They are found in bridges, roadways, docks, airports, and other structures. There are three basic forms of bridge support: elastomeric, plain, and roller bearings. Each type works best with a certain type of strength and is determined by the expected […]
Gephyrophobia, the fear of bridges, is a common phobia that can be brought on by acrophobia or claustrophobia. Some people experience panic attacks while crossing bridges and may seek professional help to overcome their fear. Businesses exist to guide people with gephyrophobia over bridges. The fear of bridges is more common than one might think. […]
Transporter bridges are movable bridges with a suspended platform that carries people or vehicles over water. They originated from medieval drawbridges and were used as defense mechanisms. The first ferry bridge was built in the late 19th century, and only a few remain today due to high maintenance costs. The UK has the most surviving […]
Segmental bridges are concrete bridges built in small sections, either on-site or precast elsewhere. They are connected with epoxy resin and a steel support system. They are ideal for building bridges over areas where it is difficult to transport large sections of concrete. The construction crew erects support towers first, followed by the superstructure. Segmental […]
Toll bridges have been around for thousands of years, originally as private enterprises. Modern toll bridges benefit governments and support transportation improvements. Inefficient payment methods can cause traffic disruptions, but many modern toll bridges offer various payment options. Toll bridges often exempt certain vehicles and some drivers pay for the next vehicle as a charitable […]
Table bridges are movable bridges that lift vertically to allow ships to pass. They are common in areas with waterways. Hydraulic pillars raise the bridge, and barriers prevent cars from entering. Alarms sound before raising, and access is controlled with lights and barriers. A table bridge is a type of movable bridge that works by […]
Plate girder bridges use two or more plate girders to support the bridge deck. They come in three types: deck-type, half-through, and multi-span. Cross bracing and vertical stiffening sections prevent buckling. Primarily used to support railroads, a plate girder bridge is recognizable through the use of two or more plate girders that support the bridge […]
Covered bridges are enclosed bridges made of wood, but some have been reinforced with concrete and steel. They were initially covered to increase their lifespan due to vulnerability to rot. Covered bridges are historic landmarks and tourist attractions in America, Europe, and Asia. The first covered bridge in North America was built in Pennsylvania in […]
