KHIA headerKnow-How in Action

VOL XXXI, NO 103

Belzona® Repaired Cell Antenna Mounts On Water Tanks

 
 

Industry:

Local Authorities & Municipalities (LOMU)

 
 

Application:

Tanks and Chemical Containment Areas (TCC)

 
 

Customer Location:

Washington, USA

 
 

Application Date:

September 2013

 
 

Application Situation:

Antennae mounts on municipal water tanks at the Cell Phone company. 

 
 

Problem:

Many water tank owners will not allow welding of cell antenna mounting brackets because it will damage the interior coating. Some owners will not even allow grinding the outer tank surface. The number of plates per antenna is determined by the engineers to handle the weight of all the equipment to be hung.

 
 

Products:

Belzona 1111 (Super Metal) 

Belzona 1161 (Super UW-Metal) 

 

Substrate:

Steel

 
 

Application Method:

Grind 4" x 12" plates, chamfer edges. Grind or MBX bristle blast tank area. Mix and apply Belzona 1111 (or Belzona 1161, depending on the weather) to plates, high in the center. Apply the Belzona product to the tank and press the plate on. Proper alignment is critical. Use the excess Belzona product to build a fillet around the plate edges. We use one or two 90 degree magnets and Gorilla tape to hold the plates in place during cure. Minimum 48 hours before antennae are hung. Most cell phone companies require a Belzona Technical Consultant on site during application to assure Belzona guidelines are followed. The application was carried out in accordance with a modified version of Belzona Know-How System Leaflet TCC-1.

 
 

Belzona Facts:

Alternative welding or stud welding will damage interior tank coatings. Store bought epoxies shrink while curing causing the cell antenna to fall off the tank.

 
 

Photographs Description

  1. Scrubbing Belzona 1111 onto mounting plate.
  2. Scrubbing Belzona 1111 onto Tank.
  3. Pressing plates onto tank with cross-bar to align correctly.
  4. Magnets under the plate to hold it up during cure, tape to keep plates from slipping sideways.
 
Case study pic one

 

 
 Case study pic two

 

 
 Case study pic three

 

 
 Case study pic four

 

 
 
For more information about Belzona visit: www.belzona.com