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Valmont Microflect is at your service with guyed towers that are custom designed to your particular specifications. By using the latest computer technology, we can determine the most economical structure that meets your specific strength and rigidity requirements for any wind, ice and antenna loading (present and future).
Design Parameters
All Valmont Microflect towers conform to the latest available versions of specifications from the Electronic Industries Association TIAIEIA-222 Standard, the American Institute of Steel Construction (AISC), the American Concrete Institute (ACI) and the American Welding Society (AWS).
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Steel parts conform to ASTM A36 or A572 |
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Anchor rods meet ASTM A572 grade 50 |
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Erection bolts meet ASTM A325X or SAE grade 5 |
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Structural shapes are galvanized according to ASTM A123, hardware to ASTM A153 |
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Standard foundations are based on normal soil as defined in EIA standard 222 |
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Concrete is 3000 psi at 28 days ultimate strength |
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Reinforcing bar meets ASTM A615-60, 60 ksi minimum yield |
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Standard grounding for lightning protection is in accordance with EIA standard 222. Special grounding systems are available upon request |
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Towers are shipped with installation drawings, including foundation drawing for normal soil |
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We offer two standard guyed tower models, GT 36 (36' face) and GT 48 (48" face). Leg, girt, and diagonal member sizes vary with each tower application. Five foot and ten foot sections are also available |
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Model GT 36 is intended for light- to medium-duty loading applications |
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Model GT 48 is intended for medium to heavy-duty loading, including horn-reflector antennas |
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Planning for the Future
It is often difficult to predict what service requirements will be five years from now, or even next year. For this reason, we keep a complete file for every tower we design. When new requirements may place unforeseen stresses on a tower, the complete design information for the specific tower is in our files. We can analyze the additions and/or deletions (removing antennas from a tower can be just as hazardous as adding antennas) to determine what, if anything, needs to be done to make the tower perform properly with the modified configuration.
When possible, you should inform Valmont Microflect of all possible future modifications to the tower, such as: new antennas at lower levels, increasing the height of the tower to accommodate space diversity antenna arrangements, reorientation of existing microwave paths, etc. With this information, we can design a tower that will accommodate these future needs. Proper planning can eliminate many unnecessary costs.
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