Steel & Mechanical

Our mechanical services don’t just pertain to gate equipment. Bothma has rehabilitated several key areas on dam structures requiring precision manufacturing, alignment, and placement.
We excel at providing turnkey installations and reliable maintenance to several types of water control structures.
This includes trash rakes, control valves, fish protection screens, recesses, access equipment, powerhouse work, and more.
 The ability to think outside traditional approaches enables us to present alternatives that often deliver cost savings to our clients. 

  • Cast in Place Concrete
  • Cleaning
  • Concrete Pile Jackets
  • Demolition
  • Micro-dredging
  • Precast Concrete
  • Preplaced Aggregate Concrete (PAC)
  • Pressure Grouting
  • Scour and Erosion Repair
  • Welding & Cutting

 

 

 

 

 

 

 

 

UNDERWATER CONSTRUCTION

SCOUR AND EROSION
Bothma can detect, assist in design, and repair scour and erosion issues that may
be occurring underneath the dam or along embankments. We offer several methods
of repair to accommodate any budget.
FABRIC FORMED REVETMENT MATS
This method of remediation uses cast-in-place, grout-filled fabric revetment mats to cover and protect areas that
experience aggressive levels of scour and erosion. Placement does not require heavy equipment, making it ideal
for remote job sites and areas with limited access. This matting can be placed both above and below the waterline.
PRECAST ARTICULATING BLOCK MATS
Bothma can also place pre-fabricated concrete block mats to aid in long-term scour protection. These blocks can
be cast onsite or in an offsite location in several different configurations. Once placed, we can “choke” the
crevices with aggregate to secure the mat and create an aesthetic embankment. If desired, vegetation can be
planted in and among the blocks for environmental improvements.