Drag the wind speed slider and watch how increasing wind requirements cascade through your project - affecting specs, costs, and timeline.
Higher wind = higher pressure on windows and doors
May need to upgrade to higher-rated products
Higher-rated products cost more
Specialty products have longer lead times
Common situations that require recalculation
Building codes are updated periodically. A project permitted under old code may face new requirements mid-construction.
Height increases, roof changes, or adding openings can change wind load requirements significantly.
When specified products are unavailable and substitutes have different ratings.
Actual site conditions differ from design assumptions - terrain, exposure, or building orientation.
Estimate the cost impact of wind-related changes
Change orders are triggered when: building codes are updated with higher wind speeds, building height or configuration changes, product substitutions require different ratings, or when field conditions differ from design assumptions.
Calculate the difference in product costs between original and new specifications, add any additional labor for different installation methods, include engineering/calculation updates, and factor in timeline delays for material procurement.
Documentation should include: original wind load calculations, updated wind load calculations, product specification comparisons, cost breakdown, timeline impact assessment, and approval from the architect/engineer of record.
It depends on the cause. Code updates mid-project may be owner responsibility. Design errors are typically the design team's responsibility. Field condition changes may be negotiated. Review your contract for specific language about code changes and unforeseen conditions.
Need new wind load calculations for a change order? Get them in minutes.
Calculate Now