Plate girder

what is a plate girder? its applications and uses.

what is a retaining wall? difference between cantilever and counterfort retaining wall.their applications and uses.

water tank and their types.

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  • Finger POINTengg says:

    The plate girders is a type of beam built from plates of steel that are either bolted or welded together.
    The plate girder are typically I-beams made up from separate structural steel plates which are welded or bolted or riveted together to form the deep vertical web with a pair of angles each edge to act as compression and tension flanges.
    http://www.shortspansteelbridges.org/~/media/Images/SSSBA/Steel%20Solutions/Pedestrian%20Bridge%20Drawing.jpg
    Plate girder bridges are suitable for short to medium spans and may support railroads, highways, or other traffic.
    Types of Plate Girder:
    1.Deck type plate girder
    2.Half through plate girder
    3.Multi-span plate girder
    Application:
    Bridge construction in roadways, highways, pedestrian etc
    Uses:
    1. Heavy loading capacity.
    2. Great stability and long fatigue life.
    3. Speedy erection.
    Retaining Wall:
    Retaining walls are relatively rigid walls used for supporting the soil mass laterally so that the soil can be retained at different levels on the two sides.
    A retaining wall is a structure designed and constructed to resist the lateral pressure of soil, when there is a desired change in ground elevation that exceeds the angle of repose of the soil.
    http://www.allanblock.com/newsletter/images/AB-Ashlar-Pattern,-Lisburn,-Antrim,-Limestone-Blend-5.jpg
    Types:
    1.Gravity
    2.Cantilevered
    3.Sheet piling
    4.Board pile
    5.Anchored
    Difference between Cantilever and Counter
    Cantilever Retaining wall Counter fort Retaining wall
    1.Stem/toe/heel bend like cantilever slab Stem/Heel bend like continuous slab
    2.It does not require any support Counter fort are provided as support
    3.Economical below 6-7 m height Economical above 7 m height
    4.Uniformity of stress is not maintained Uniformity of stress is maintained
    Uses:
    1.Preventing soil erosion
    2.Stability
    3.Visual Interest
    Applications:
    1.culvert walls
    2.Flood wall
    3.Tunnel portals and approaches
    Water tank:
    A water tank is a container for storing water.
    Types:
    1.Chemical contact tank
    2.Ground water tank
    3.Elevated water tank

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