The mean roof height of the building shall be the average of roof eave and highest point of roof surface, except for roof with slope <= 10°, mean roof height is permitted to be taken as the roof eave height.
ASCE 7-22 Compliant Wind load Calculator- Glazing & Façades
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WLC Guidelines
BUILDING HEIGHT
TYPE OF ENCLOSURE
1. Enclosed / Partially open building
Enclosed building: Total openings (windows / doors) in each wall shall be less than 4 sq.ft. or 1% of wall area. Partially open building: The building that doesn’t satisfy any of the other conditions.
2. Partially enclosed building
Total area of openings in a wall exceeds the sum of others openings in the building envelope by 10%, and the total area of openings in a wall exceeds 4 sq.ft. area or 1% of area of wall whichever is greater.
3. Open building
Each wall shall be at least 80% open.
LEAST HORIZONTAL DIMENSION
CASE A
Least horizontal dimension = B
CASE B
Least horizontal dimension = minimum of B1 & B2
Actual Height
ACTUAL HEIGHT IS THE HEIGHT OF OVERHEAD SLAB AT THE INTERMEDIATE STORY (HIGHLIGHTED BELOW) WHERE WIND LOADS CALCULATION IS REQUIRED.
Tributary Area
Fixed Window System
Formula: Ta = w * h
Storefront / Multi Panel Doors / Curtain walls
Case A
Condition: h > w max(w1, w2, w3)
Formula: Ta = min(w1, w2, w3) × h
Case B
