Wallace Design Collective

Wallace Design Collective has extensive experience with a wide array of structural investigations. Our experience includes condition and assessment surveys of existing structures; forensic investigations of failed or failing structures; peer reviews; and evaluations of existing structures with regard to additions and expansions. Wallace has been involved in many large-scale national and regional investigation programs that reviewed existing structures with potential deficiencies and, when such deficiencies were identified, made repair recommendations and designed the necessary remediations. Many of these programs involved facilities that were in-use, which required a sensitive approach that allowed the facilities to remain open while repairs were made discretely and efficiently. In addition, Wallace has the capability to conduct a variety of in-field tests and surveys, including infrared surveying of masonry walls.

Our staff of 200+ employees includes engineers licensed in all 50 states, Puerto Rico, and the District of Columbia. We have designed projects in every state, giving us in-depth knowledge of all model building codes, as well as experience with local codes and jurisdictions.

wind
• Damage assessment and repair design for existing and in-process construction
• Staff trained for rapid evaluation of building safety per ATC 45

snow load
• Snow load measurement and monitoring systems and guidelines to help owners avoid collapse resulting from unusually heavy snow loads
• Snow load removal plans and repair design for existing structures damaged by snow or ice, including a review of past and present building code requirements
• Snow and ice load damage assessment

seismic
• Damage assessment and repair design for existing and in-process construction
• Staff trained for rapid evaluation of building safety per ATC 20

mine subsidence
• Evaluation of building settlement and related structural distress due to abandoned mine subsidence
• Experience with monitoring methods

fill subsidence
• Analysis of building damage due to settlement from improper fill placement and/or water infiltration
• Experienced in the design of structural repairs, including micro-pile and cast-in-place solutions

roof drainage
• Evaluation of roof drainage and ponding risks, based on rainfall history, flow rates and code requirements

fire
• Fire damage assessment and repair design

corrosive environments
• Assessment and repair design for steel structures in corrosive environments
• In-place testing and visual analysis of concrete exposed to prolonged moisture

foundations
• Assessment and repair design for heaving or settling foundations and on-grade floor slabs
• Coordinate with geotechnical engineers to determine source of movement
• Experience with soil conditions in all 50 states and Puerto Rico

retaining wall failure
• Assessment and repair design for cast-in-place, post- tensioned concrete and masonry retaining walls
• Investigate damage resulting from moisture, inadequate bearing, excessive soil pressure, or inadequate design or construction

Wallace Design Collective provides investigation and repair for concrete, steel, masonry, wood and light gage structural systems. We provide services to analyze existing damage as well as design to strengthen existing systems.

concrete
• Assessment and repair design for concrete structures with cracks resulting from settlement, heaving, shrinkage and thermal expansion
• Non-destructive testing to locate concrete reinforcing • Assessment and repair design for cast-in-place and precast concrete parking decks
• Assessment and repair design for structural sidewalks and retaining walls used to facilitate below-grade store fronts, common in historical districts

steel
• Assessment and repair design for steel structures, including composite systems and open web steel joists and joist girders
• Serviceability assessment and repair design
• Flexible repair options to permit uninterrupted facility operations
• Evaluation of dock leveling equipment and related building components

masonry
• Assessment and repair design for masonry (CMU) structures with cracks resulting from settlement, heaving, shrinkage and thermal expansion
• Non-destructive testing to locate masonry reinforcing
• Assessment and repair of improperly or insufficiently reinforced CMU walls
• Assessment and repair design for masonry structures with damage from prolonged exposure to moisture

wood
• Assessment and repair design for wood structures
• Analysis of past and present building code requirements for vintage wood structures with deficiencies due to age and design

infrared analysis
• Helped pioneer the use of non-destructive infrared surveys of masonry construction defects
• Infrared analysis to verify grout placement in reinforced masonry walls and to identify locations of moisture infiltration
• Infrared analysis of moisture infiltration in roofing systems