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ROHN 55G 80 Foot Bracketed Tower 55BRKT080

Highlights
Hot Dip Galvanized
Double Bolted Joints
Zig-Zag Rod Bracing
1-1/4" Steel Tubing
Side Rails
17" Equalateral
Triangular Design
Can be used in:
Bracketed Config
Price: $3,343.20
Manufacturer Code: 55BRKT080
Grounding:
Qty:
Availability: Ships out in 2 -3 days!
ROHN 55BRKT080 Complete 80' Bracketed 55G Tower Kit
This Product Order Supplies the Following BOM (Less Foundation and Installation) in accordance for Use as a Bracketed 80 Foot ROHN 55G Tower with EPA's (Effective Projected Area) Ratings for 70, 80 or 90 MPH (No Ice). Refer to Larger Image, Brochure or Footer Links at the Bottom of the Page below for Ice Loading and EPA Information.

(8) 55G
(1) APL55G
(1) SB55G
(2) HBUTVRO
(2) BGK2G Kits (optional)

This 55G Tower is to be used in a Wall Bracketed Configuration according to Use and Foundation Specifications in the ROHN Catalog. This Height Configuration relies on a SB55G Imbeded in a Concrete Foundation Specified by Engineering. As a Wall Bracketed-Properly Mounted Structure, a 70, 80 or 90 MPH rated 55G Tower can rise to a maximum of 100 feet. Consult ROHN 55G Catalog Links of the Footer Section at Bottom of Page for more ROHN 55G Tower Configuration, Foundation and Grounding Detail Information.


Note: Bracketed Towers are Specifically useful when your project calls for a Tower to rise above the building's height, but for various asthetic and Weight Bearing Load considerations, cannot construct the tower upon the roof itself. The Bracket Tower Scenario relies on the Building's Load Bearing Outside Wall, using a portion of it to bolt on the base and first bracket, establishing a secure cantilever, whereupon the tower can rise as a Self-Supporting Structure above the building's roof without unsightly guy wires or a ground presence below. Self-Supporting Towers are limited in Height due to the nature of Antenna and Ice loads versus the Cantilever Nature Of Wind against them, offset by the weight of the Foundation and the cohesive of the soil to counter Tower tipover, as well as the strength of the tower members to withstand these Forces against them. ROHN Tower Kits are designed based on assumptions made regarding Windspeed, EPA (Antenna Load), Height, Standard Soil Conditions, Surrounding Environment and Duty. The Pre-packaged Kits contain the parts called for based on this Stock Design. The Stock Design of these Kits does not account for the Variations of Historic Windspeed, Number of Antenna(e) Loading at Specific Height(s), Soil Engineering recommendations, Adjacent Structures, Communications Purpose, or Geo-Political Rules, Laws and Codes That will be Applicable to Your Project. It is Recommended that you take the time to engage an local Engineer that has the expertise and available Information necessary to evaluate the Stock design for Applicability, and/or find the Tower Quote Data Sheet Form by clicking the link that appears on the Footer of this Page Below. *Per Rev G requirements, any structure greater than 10 ft requires a climber safety device.
Availability: Ships out in 2 -3 days!
Shipping: Can ship only within USA
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55G Bracketed

The 55G Bracketed Tower can be installed adjacent to buildings using a bracket to secure the tower in one or two locations along the height of the structure.

Wind Loading, Antenna Loading and Wind Survivability ratings vs. Height Documentation Provided by ROHN is available here as a Resource, but is by no means complete by itself or a susbstitution for Engineering Conducted Specific to your Application. Contact Us with any Questions you may have regarding Use prior to Purchase. All Information regarding the ROHN 55G Tower line, Parts and Accessories is as accurate and complete as we can possibly provide given that this Resource Offering is subject to change without Notice and is beyond Our Control. 


ROHN 55G Bracketed Tower

DESIGN NOTES:
1.
Tower designs are in accordance with ANSI/EIA-222-F.
2. All towers must have "fixed" bases. Pinned bases may not be used.
3. Designs assume transmission lines symmetrically placed as follows:
55G Tower - Two 7/8" Lines on each face ( Total =6)
4. Antennas and mounts assumed symmetrically placed at tower apex.
5. Allowable antenna areas assume all round antenna members.
6. Allowable flat-plate antenna areas, based on EIA RS-222-C, may be obtained by multiplying areas shown by 0.6.
7. All brackets are to be ROHN (P/N HBUTVRO)
8. The interface of tower brackets to supporting structure is to be designed by others and must support a minimum horizontal force of 3200 lbs.

FEATURES:
o
Completely hot-dip galvanized after fabrication to provide absolute corrosion protection.
o Cross bracing is formed by a continuous solid rod bracing in a zig-zag pattern for strength.
o Pre-engineered loading charts meet varying individual specs and site conditions.
o Typical uses include small dishes, broadband, security and two-way communication.


ROHN 25G Bracketed



ROHN G-Series Bracketed Towers


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This ROHN G-Series Bracketed Towers Guide will answer many questions you may have on this Product Line.


GUIDELINES FOR THE PREPARATION OF A GEOTECHNICAL REPORT

I. PURPOSE AND INTENT

a) The intended purpose of these guidelines is to assist the customer and/or owner to retain the services of a Geotechnical Engineer.

b) It is not ROHN´s purpose or intent to supercede the Geotechnical Engineer´s knowledge, judgement and/or experience. It is the Geotechnical Engineer´s responsibility to add or delete from these items, based on local site conditions and other factors.

c) Additional information is provided in ANSI/TIA-222-G Annex G "Geotechnical Investigations".

II. DISCLAIMER

a) ROHN will not accept any liability, either expressed or implied, for the use of, and omissions in, these guidelines.

III. EXPLORATORY BORINGS

a) Borings should be taken at tower legs for self-supporting towers and at the base and anchor points for guyed towers. For small self-supporting towers, two borings may suffice. For large self-supporting towers, one boring should be taken at each tower leg. A "small" self-supporting tower is assumed to have a face width less than 20 feet and a compression load less than 50 kips per leg. For pole structures, one boring may suffice.

b) The minimum boring depth should be 30 feet for pole structures, self-supporting towers and guyed tower bases. For guyed tower anchors, the minimum depth should be 15 feet. The actual depth of boring must be determined by the Geotechnical Engineer based on reactions, soil conditions and the type of foundation recommended.

c) If borings cannot be advanced to the desired depth, rock corings should be taken. Rock Quality Designation (RQD) values and compressive strengths should be determined.

IV. GEOTECHNICAL REPORT

a) The following properties, for each soil layer encountered, should be determined by field or laboratory testing and summarized in the geotechnical report:

1. Soil classification and elevations
2. Standard penetration values
3. Unconfined compression strength
4. Angle of internal friction
5. Cohesion
6. "In-Situ" soil density and moisture content
7. Rock quality designation (RQD) and percent rock sample recovered
8. Other properties unique to site conditions

b) The following items should be discussed in the geotechnical report:

1. Geological description of site
2. Observed and expected ground water conditions
3. Expected frost penetration depth
4. Corrosion potential of soil and corrosion protection recommendations
5. Site access and potential construction difficulties
6. Dewatering or site drainage requirements
7. Backfill material recommendations
8. Settlement considerations
9. Additional information to aid foundation designer
10. Recommended types of foundations
11. Design parameters for uplift, download and lateral load
12. Factor of safety considered when allowable vs. ultimate design parameters are provided
13. Recommended construction techniques and inspections