| There are four major factors used in describing a | | | | used between beams. The pony end section shows |
| bridge. By combining these terms one can give a | | | | knee braces which prevent dality Astrology |
| general description of most bridge design types. | | | | Spirituality Christianity Spirituality Feng Shui |
| # span (simple, continuous, cantilever), | | | | Spirituality Graphology Spirituality Kabbalah |
| # material (stone, concrete, metal, etc.), | | | | Spirituality Meditation Spirituality Metaphysics |
| # placement of the travel surface in relation to the | | | | Spirituality Mysticism Spirituality New Age |
| structure (deck, through), | | | | Spirituality Numerology Spirituality Reiki |
| # form (beam, arch, truss, etc.) | | | | Spirituality Religion Spirituality Tarot Sports and |
| The three basic types of spans are – simple spans, | | | | Fitness Sports and Fitness Aerobics Sports and |
| continuous spans and cantilever spans. Any of these | | | | Fitness Archery Sports and Fitness Baseball |
| spans may be constructed using beams, girders or | | | | Sports and Fitness Basketball Sports and |
| trusses. Arch bridges are either simple or continuous | | | | Fitness Bodybuilding Sports and Fitness Cricket |
| (hinged). A cantilever bridge may also include a | | | | A truss is a structure made of many smaller parts. |
| suspended span. | | | | Once constructed of wooden timbers, and later |
| Examples of the three common surface configurations | | | | including iron tension members, most truss bridges are |
| are - Deck, Pony and Through. In a Deck configuration, | | | | built of metal. Types of truss bridges are also identified |
| traffic travels on top of the main structure; in a Pony | | | | by the terms deck, pony and through which describe |
| configuration, traffic travels between parallel | | | | the placement of the travel surface in relation to the |
| superstructures which are not cross-braced at the top; | | | | superstructure (see drawings above). The king post |
| in a Through configuration, traffic travels through the | | | | truss is the simplest type; the queen post truss adds a |
| superstructure (usually a truss) which is cross-braced | | | | horizontal top chord to achieve a longer span, but the |
| above and below the traffic. | | | | center panel tends to be less rigid due to its lack of |
| Simple deck beam bridges are usually metal or | | | | diagonal bracing. |
| reinforced concrete. Other beam and girder types are | | | | Should you have any queries or need more |
| constructed of metal. The end section of the two | | | | information on bridge truss design and construction, |
| deck configuration shows the cross-bracing commonly | | | | please feel free to contact us. |