Select Roof Type

Summary

Preview

Cone Silo

Self-Supported Cone (Internally or Externally Stiffened)

Suitable for medium diameter silos.   Internal and external stiffening allows for a large diameter roof design.

Internally Stiffened Cone Roof

Highlights

  • The bulk of the roof work can take place at grade
  • These roofs are typically lightweight and can be hoisted to position by crane
  • TIW can provide the design, fabrication and field construction of all ladders, stairways and platforms, providing a single source of procurement for your silo

Summary

Preview

Cone Silo

Self-Supporting Cone (Structurally Supported)

A structurally supported cone roof  suitable for a large diameter silo.  It is often used to support additional roof loads, such as platforms, structures or heavy machinery.

Structurally Supported Cone Roof

Highlights

  • Roof can be sealed
  • TIW can provide the design, fabrication and field construction of all ladders, stairways and platforms, providing a single source of procurement for your silo

Stiffened Silo Roof

Summary

Preview

Cone Silo

Self-Supporting Cone

Suitable for small diameter silos.

Highlights

  • The bulk of the roof work can take place at grade
  • These roofs are typically lightweight and can be hoisted to position by crane

Configuration

Stiffening Options

Summary

Preview

Umbrella Silo

Self-Supporting Umbrella / Dome

Typically constructed at grade level, then hoisted by crane to position.

The dome and umbrella are similar. The dome roof is formed with a spherical surface supported at its periphery, whereas the umbrella is a modified dome, where the horizontal section is a regular polygon with multiple sides with roof plates, supported only at the periphery.

Self Supporting Dome Roof

Highlights

  • The bulk of the roof work can take place at grade
  • These roofs are typically lightweight and can be hoisted to position by crane

Summary

Preview

Umbrella Silo

Self-Supporting Umbrella / Dome (Stiffened)

Typically constructed at grade level, then hoisted by crane to position. Internal or external stiffening is typically used to support additional roof loads, such as platforms, structures or heavy machinery but also allow for larger diameter designs.

The dome and umbrella are similar. The dome roof is formed with a spherical surface supported at its periphery, whereas the umbrella is a modified dome, where the horizontal section is a regular polygon with multiple sides with roof plates, supported only at the periphery.

Highlights

  • The bulk of the roof work can take place at grade
  • These roofs are typically lightweight and can be hoisted to position by crane
  • TIW can provide the design, fabrication and field construction of all ladders, stairways and platforms, providing a single source of procurement for your silo

Stiffened Dome Roof

Design Specifics

TIW brings more than a century of experience in design, fabrication and construction of silos in many configurations and sizes for various environments to every project. We’ve continually improved our design and construction process to produce a safer, longer lasting and more durable product. Specific design considerations include:

Considerations

  • Allowable external Loads on tank shell openings
  • Internal & external Pressures
  • Environmental loads (wind, seismic, snow, importance factors)
  • Foundation design
  • Design based on silos operating at elevated temperatures

Requirements

  • Product conditions
  • Maximum capacity

Materials of Construction

  • Carbon steel, stainless steel or duplex steel

Corrosion Protection

  • Linings, coatings, wallpapering
  • Cathodic protection

Access Systems

  • Radial or spiral stairways
  • Roof access systems

Heat Conservation

  • Various insulation products
Construction of 8 Hoppers for a Hydro Plant

A Track Record of Success

In the Mining, Minerals & Metals, Pulp, Paper and Forestry, and Alternative Renewable Fuels industries, your bulk storage equipment is critical to the efficiency of your operations, and must withstand harsh conditions and punishment in the field.

As Canada’s premier tank builder, TIW has established itself as a dependable partner for high quality construction of welded bulk Silos, Bins and Hoppers.

With more than 100 years in the industry, we understand how important it is to have the appropriate storage for your application. That’s why we work with you to review your specific requirements, performing a thorough assessment of the type and amount of bulk material you’ll be handling, then designing and building the optimal storage vessel that will last.

Appurtenances

Our design engineers can customize a wide range of appurtenances on the interior and exterior of your silos.  At our in-house, 200,000 sq ft material processing plant,we fabricate everything from nozzles, couplings and piping to custom roof walkways, platforms and joining catwalks.

Here are some typical components we design, fabricate and install in our silos:

  • Nozzles (with flanges, elbows, couplings and more)
  • Ladders, radial and spiral stairways designs with handrail variations
  • Roof walkways, platforms and joining catwalks
  • Shell manways
  • Rectangular and circular hatches
  • Insulation rings
  • Lightning arrestors
  • Rescue davits
  • Piping supports, cable support trays, grounding lugs
Pre-Fabrication

In-house prefabrication and planning

Methodology

Planning is as important as the cutting, forming and welding operations.  We minimize costly field hours and crane time by pre-fabricating applicable sections of your silo, bin, or hopper in our shop facilities. With our decades of experience in the erection business, we’ve seen firsthand how maintaining in-house services keeps costs in the field down.

Processing & Delivery

We’ve continuously invested in state-of-the-art equipment for our 200,000 square foot covered material processing plant.  Located on a 10-acre property that is adjacent to the Welland Canal, and accessible by rail and roadway, we have the capability to fabricate and supply large orders in a short period of time.

 

 

Managed Services

Protective Coatings & Insulation

Silos stored products have potential for causing internal wear and corrosion..  We offer a variety of external coatings along with full or partial internal lining.  We also offer additional corrosion options such as hot dip galvanizing, coating over galvanized components and fireproofing of structural structures.

Pre Coated Dome Roof PlatesShop Pre-Coating

TIW can shop coat plates and appurtenances prior to shipping to site.  This can help offset the high prices of field coating and help minimize open-air blasting which can be environmentally prohibited in some project locations.

Galvanized StairwellGalvanizing

We provide galvanizing of various components – from nozzles, piping and support clips to stairways, handrails and platforms. In some cases, both galvanizing and coating are applied providing a superior protection.

112' x 40' High, Coated Alumina Silo

Exterior Coatings

These coatings are applied to the exterior of the silo for corrosion protection and cosmetic appearance. Exterior surfaces are typically sand blasted to an SSPC-SP6 finish in preparation for coatings such as:

  • High-performance epoxy primers and finish coatings
  • Inorganic zinc coatings
  • Holding primers
  • Acrylic polyurethane coatings
  • High-temperature coatings
Interior View of Structurally Supported Cone Roof Silo

Interior Linings

The interior surfaces may require specific protective linings.  TIW removes all sharp edges prior to sandblasting.  Some typical linings used might include:

  • Epoxy primers
  • Epoxy finish coatings
  • Holding primers
  • High temperature coatings
82' x 53' High, Chip Silos for a Pulp & Paper Facility

Insulation

When temperature control is required per design, TIW can supply and install a variety of mechanical insulation to meet the customer’s requirements. Insulation options can vary from the more common insulation batts with external cladding to prefabricated insulated panels. There are also different insulation and cladding material options.

Depending on design and temperature requirements, TIW can offer several insulation materials such as:

  • Fiberglass
  • Calcium silicate
  • Mineral wool
  • Cellular glass
  • Perlite
  • Polyisocyanurate
  • Thin blanket
  • Aerogel