ROHN 25G Complete 70 Foot 90 MPH (REV. G) 70 MPH (REV. F) Guyed Tower
This Product Order Supplies the Following BOM (Less Foundation and Installation) in accordance for Use as a 70 Foot ROHN 25G Tower with EPA's (Effective Projected Area) Ratings for 90 MPH (REV. G) or 70 MPH (REV. F). Refer to Larger Image for EPA Information.
25G90R070 | ||
---|---|---|
QUANTITY | PART NUMBER | DESCRIPTION |
1 | 25AG2 | Top Cap Tower Section |
6 | 25G | 10' Tower Section |
1 | 25AJBK | Bolt Kit for 25G Top Section |
6 | 25JBK | Bolt Kit for 25G Tower Section |
1 | BPC25G | Standard Concrete Base Plate |
2 | GA25GD | Guy Wire Bracket |
500 FT | 3/16" Guy Wire | |
6 | PLP-115 | Yellow Plastic Guard for Guy Wire |
12 | BG2142 | 3/16" Big Grip Pre-Formed Deadends |
12 | 5/16THH | 5/16" Thimble |
6 | 1/2TBE&J | 1/2" x 12" Turnbuckle - Eye-to-Jaw |
3 | TBSAFETY | Turnbuckle Safety Wire and Clamps Kit |
3 | GAC3455TOP | Anchor Rod with 5 Hole Equalizer Plate |
1 | AGK1GGX |
Anchor Rod Ground Kit This Kit Includes: (3) 15' of 7/16 EIP IWRC RRL (3) 5/8" x 10' Galvanized Ground Rod (aka 6260) (3) 3/4" Clamp No. 8034 WB (aka 340016) (3) CPC.5/.75 - Anchor Rod Clamp |
3 | BGK3GGX |
Tower Base Section Grounding Kit This Kit Includes: (1) 15' of 7/16 EIP IWRC RRL (1) 5/8" x 10' Copper Clad Ground Rod (1) 3/4" Clamp Ground Rod Clamp (1) CPC1/1.25 - Anchor Rod Clamp |
3 | CPC.5/.75 | Anchor Rod Clamp |
1 | 3/4x12PP | Pier Pin Insert for 25G Tapered Base |
1 | ASSEMBLY GUIDE |
The 25AG2 Top Cap Tower Section is the standard top section for the 25G Tower Series,
but can be replaced with the following options.
PART NUMBER | DESCRIPTION | HEIGHT | O.D. |
---|---|---|---|
25AG | Top Cap | 9' | 2" |
25AG1 | Top Cap | 9' - 3" | 1.66" |
25AG2 | Top Cap* | 9' - 9" | 2.25" |
25AG3 | Top Cap | 9' - 3 1/2" | 2.25" |
25AG4 | FLAT Top Cap | 8' - 3/16" | FLAT |
25AG5 | Top Cap | 8' - 1/2" | 2.75" |
This 25G Tower is to be used in a Guyed Configuration according to Specifications in the ROHN Catalog. As a Guyed Structure, a 110 MPH rated Tower can rise to a maximum of 190 feet. Refer to ROHN catalog for Foundation and Grounding Detail Information. Consult ROHN Catalog Links at Footer Section at Bottom of Page for more ROHN 25G Tower Details.
This Item Ships LTL Freight ONLY...
ROHN TB25D Torque Bar Option for the GA25GD Guy Attachment
One Bar per Order. Three Bars would complete 3-way down guy. Modifies a GA25GD into a Torque Stabilizer Assembly that could be installed at existing Guy attachments on any horizontal brace as opposed to tower section joints. This Item will also require the 3/8 inch shackles to complete the upgrade...
ROHN RP25G Antenna Rotor Post for 25G Tower
For Mounting Antenna Rotors onto 1.25 DIA x 7.5 inch post. Fastens with Saddle Clamps to the Tower leg (also 1.25 inch DIA), with 4.75 inches of clear space between Tower Rail mount and Rotor Post...
ROHN TB50 Tower Bushing for 25AG 45AG Tower Section
Die Cast Reducer to Peen into ROHN Top Cap R-25AG R-45AG Mounting Tube to support 1.25" O.D. Mast...
ROHN SR245 25G 45G Tower Safety Ring Attachment
Snaps into place at any level. No bolts required. This attachment fits both the ROHN 25G and ROHN 45G Tower Series. Compliments the Work Platform Accessory (WP25G for 25G and WP45G for the 45G)...
ROHN 25ACL3 25G Anti-Climb Panels (3) for Base Tower Section
3 ACL Anti-Climb Panels (only) for Installation on an Existing 25G Base Tower Section...
This Item Ships LTL Freight ONLY...
ROHN AS25GTB 25G Tower Thrust Bearing Accessory Shelf
Made in the USA!
for Mounting Antenna Rotor, Beacon Lights and other Attachments. Drilled to fit the Hygain and Yaesu rotator bolt patterns. The plate is not drilled for nor is it designed for use with a thrust bearing. Field Drilling may be necessary to accommodate the Specific Item...
Read MoreROHN ACWS Anti Climb Warning Sign
The same Anti Climb Warning Assembly Kit from the ROHN Factory for placement on new tower installations and replacement on existing tower sites where the sign and sticker have faded due to exposure. One of the items on your yearly checklist...
RohnJack G Series Tower Assembly & Disassembly Tool
This is the Complete "Gin Pole" for Lifting one 25G or 45G Tower Section at a time. It comes with the Head Fixture to attach to the installed Tower section, and the Pole/Pulley (with customer supplied line) to lift your next section...
ROHN WP25G 25G Tower Work Platform Platform
Snaps into place at any level. No bolts required. Provides a secure platform work area on the tower itself. Use the SR245 Safety Ring to complete the Safe Work Environment at the level the Platform is installed...
3S-25MT-DUAL Side Arm Antenna Mount for Towers
Double Side Arm Mounts for lightweight broadband, Wifi ,scada and two-way antennas. .Extends Each Side off the tower leg...
ROHN HB25AG 15 inch Adjustable House Bracket
for Standoff of a ROHN 25G Tower Installation of up to 15 inches and gives Greater support for ROHN 25G Bracketed and Self Supporting Tower Installations...
ROHN HB25BG 24 inch Adjustable House Bracket
for House and Wall Standoff of a ROHN Tower Installation ;up to 24 inches and provides greater support of ROHN 25G Bracketed and Self Supporting Tower Installations...
ROHN HB25CG 36 inch Adjustable House Bracket
for Standoff of ROHN 25G Tower Installations for up to 36 inches and provides greater Support for ROHN 25G Bracketed and Self Supporting Tower Installations...
ROHN UHF25G Tower Side Arm Mount
For UHF & FM Whip Antennas. Fastens with Saddle Clamps. Projects your mast held in the clamp (up to 1.25 inches in Diameter with bolts supplied) to distance of 12 inches from the tubular side rail of the tower face to which it is attached...
ROHN DM25G2 Tower Face Dish Mount
Face Mount includes 2 Angled Steel Cross-Members that Bolt directly to any of the 3 Faces of a Standard 25G Tower Section. 5 Foot x 2 inch STD (2-3/8 inch O.D.) Pipe connects with U-bolts to 25G Tower Section Brackets....
ROHN D1130 Tower Side Arm Mount
Made in USA - Antenna side mount kit. Fastens with Saddle Clamps. Projects your mast held in the clamp (up to 2.00 inches in Diameter with bolts supplied) to distance of 61"-73" inches from the tubular side rail of the tower face to which it is attached...
3S-MT Side Arm Antenna Mount for 25G Tower
Side Arm Mount for lightweight broadband, Wifi ,scada and two-way antennas. Extends off the tower leg...
ROHN 25G Guyed Towers
TIA/EIA-222-G, the national standard´s seventh revision for Steel Antenna Towers and Antenna Supporting Structures, became effective January 1, 2006. REV. F wind loading is calculated according to the Fastest-Mile Wind Speed for the structure´s location as recorded from the 1-in-50-year wind speeds encountered at that location that were constant over a distance of one mile. REV. G requires that wind loading be calculated according to the three-second-gust wind speed, allowing the tower´s design to accommodate instantaneous loads. Loadings will be determined by specific local county criteria from wind, ice, and seismic maps.
Tower and foundation installations should be performed by qualified and experienced personnel using construction drawings. This document is to serve as a guide for sizing and buying the 25G tower. All types of antenna installations should be thoroughly inspected by qualified personnel and re-marked with appropriate danger and anti-climb labels at least twice a year to ensure safety and proper performance.
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 25G 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.
DESIGN NOTES:
1. Tower designs are in accordance with ANSI/TIA-222-F-1996 and ANSI/TIA-222-G-2005, Class I Structures.
2. Design assumes towers are installed on level ground. Lower EPA values will apply for roof mounted towers or for sites located on unusual terrain.
3. Designs assume two 1/2" diameter lines on each tower face.
4. Anchor radius is from tower base to intersection of anchor rod with ground.
5. Tower designs and guy chord lengths shown are based on level ground. Initial tensions for guys in pounds at 60º Fahrenheit are shown in ( ).
6. Antenna and mounts are assumed symmetrically placed at the tower top.
PARTS LIST NOTES:
1. Items listed are required for complete (ground) guyed towers. Base and anchor details will be required for installation on roofs or for sites located on unusual terrains and wind loading criteria, for all roof type installations.
2. Standard guys provided with each standard tower include an additional 6% length.
3. Anchor grounding (AGK1GGX) and base grounding (BGK3GGX) are included with the tower material.
4. Installation information and a safety package (P/N: ACWS) are included with each tower.
This Buyers Guide will answer many questions you may have on this Product Line. For more detailed information and Specification Sheets covering many aspects of Various Parts, Accessories and Installation Scenarios... Please refer to the "ROHN 25G Tower" Link appearing in the Footer of this Page Below!
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
1. ROHN 25G Complete 70 Foot 90/ 70 MPH Guyed Tower 25G90R070 - $4,480.00 | 2. ROHN RSL 30 Foot Heavy Duty Tube Brace Tower Kit - RSL30H80 - $2,266.00 |
3. ROHN RSL 70 Foot Tube Brace Tower Kit – RSL70L40 - $4,852.00 | 4. ROHN RSL 80 Foot Tube Brace Tower Kit – RSL80L30 - $5,450.00 |
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