Digester & Storage Tanks
Bolted steel digester and storage tanks, erected true for the biogas process inside.
Biogas · RNG · Storage
Digester Tanks · Structural Steel · General Contracting
Digester tanks. Steel structures. Built for the long haul.
Calgaro Construction specializes in erecting biogas digester tanks, and builds the process buildings, structural steel and metal buildings around them and beyond.
20+
Years in operation
200+
Structures delivered
Any Scale
Crews sized to every job
On Time
On budget, beyond expectations
01 / Tanks & Steel
What we build
We build the tank and the steel around it, so schedule, quality and accountability stay with one contractor.
Feedstock & Process Buildings
Clear-span steel buildings for receiving, processing and equipment storage.
Clear-span · Receiving · Processing
Gas Conditioning & Compression
Steel enclosures built around upgrading, compression and power equipment.
Upgrading · Compression · Power
Structural Steel Erection
Columns, beams, rafters and multi-level frames, set and bolted by experienced erection crews.
Framing · Rigging · Crane work
02 / Tank Erection
From foundation to handover.
Technology providers and developers bring the process design. Calgaro brings the crews, equipment and schedule to put the tank up true.
Digester tank erection in detail01
Mobilize
Crews and equipment staged and ready on your schedule.
02
Layout
The shell is laid out on the foundation before the first panel is set.
03
Shell Erection
Bolted panels go up panel by panel, with every seam kept true.
04
Access Steel
Stairs, platforms and access steel that make the tank safe to service.
05
Envelope
Insulation wrap and cladding close in the shell and protect the process inside.
06
Handover
A sealed, accessible tank, ready for process equipment and finish trades.
03 / Qualifications
Built to qualify
What a developer's construction team checks before a steel contractor goes on site.
01
Proven with Industry Leaders
Digester tanks erected for some of the largest utilities, technology providers and developers in biogas, built to each one's specifications.
02
Self-Performing Crews
Our own erection crews run the crane, lifts and rigging, scaled from specialty tasks to full site builds.
03
Nationwide Mobilization
Crews and equipment that travel to the site, wherever the project is.
PWA Compliant
Prevailing Wage & Apprenticeship
Calgaro staffs and documents every job to meet federal prevailing wage and apprenticeship requirements.
- Prevailing wage rates for every trade
- Registered apprentices on site
- Payroll and apprenticeship records on file
From groundbreaking to grand opening, we build structures that stand the test of time.
Calgaro Construction
05 / About Calgaro
The crew behind the tank.
Our leadership has worked as the execution crew on RNG digester builds, stepping in to construct and finish sites in the field. That time on site taught us what these facilities demand, and it shapes every tank, building and frame we put up for biogas technology providers and RNG developers.
With more than twenty years in operation and over 200 structures delivered, we bring the field crews, the equipment and the schedule.
Design-Build
General Contracting
Custom Construction
Manpower & Equipment
06 / Start a Project
Let's make it happen.
Planning a digester site, or need an erection crew for a tank or steel package? Send the details and we will follow up with next steps.