Western Wood Structures offers the complete package when it comes to repairing or upgrading your timber roof system, including inspection, repair/upgrade design, field installation and written estimates for the work.

Possible reasons for repairing or upgrading a building

1. New equipment is required to be supported by existing beams or trusses.

2. An addition to the structure changes the loading condition on the existing structure.

3. A change of occupancy warrants an upgrade to existing code requirements.

4. Roof structure components are damaged by decay.

5. Glulam inspection detects an imperfection.

6. Error in original design.

7. Forklift impact.

Inspections
Western Wood Structures employs licensed engineers who are experienced in inspecting timber structures.  Our inspections will catalogue the existing loading on the structure and examine the condition of the structural framing.

Analysis
Our engineers will analyze the members, connections and the entire roof structure to determine if it is adequate to withstand the code-prescribed loading.  Timber design methods and allowable stresses have been evolving for the last four decades.  Snow load requirements have also become more severe.  These two issues combine to the effect that beams that were once considered properly designed are now considered insufficient according to present building code requirements.  Our analysis will determine which members, if any are in need of upgrading to meet the code requirements.

Repair Design
When members do not meet loading requirements, we can develop a repair scheme designed to bring the structure up to current codes.  Western Wood Structures uses a variety of systems to provide the most cost-effective solution to bring your roof structure components up to code or increase the capacity to accept new requirements.

Field Repair Services
Our experienced field personnel are able to perform the modifications to your structure.  Whether it is replacing damaged webs of a timber truss or installing shear dowels and post-tensioning glulam beams, our field supervisors have more than 50 years combined experience in repairing timber beams and trusses.

Technical Representatives
Our technical representatives can prepare estimates for the inspection, design, and repair work.  This eliminates the need to get separate bids from both an engineer and a contractor.

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Tinora High School
Defiance, Ohio

Western Wood Structures strengthened these Glulam roof beams by installing a post tensioning system with epoxy shear dowels as needed.

When a change in occupancy occurred with this building, the City of Portland required these bowstring trusses be brought up to current code.  WWS solved the problem by designing and installing a post tensioning system consisting of high-strength cable and steel anchors.  The use of cable can be an advantage, especially when ceiling joists are framed into the lower chords of trusses.

Maverick Building
Portland, Oregon

Alaska Airlines
Anchorage, Alaska

Western Wood Structures repaired these failed Bowstring trusses by replacing broken members as required and by installing a post tensioning system on the lower chords.

WWS brought these gymnasium beams up to current code by installing a post tensioning system consisting of high strength cable and steel anchor brackets.

OES Gymnasium
Portland, Oregon

Trout Lake Farms
Trout Lake, Washington

WWS reinforced the glulam arches for this building in Trout Lake, WA with FiRP^® glulam members to increase their carrying capacity.  The design snow loads had been increased from the original date of construction due to changes in the building code.