Building Geometry

BUILDING WIDTH is measured from outside-to-outside of endwall girts, and may be virtually any dimension, to a 1/16 inch [1.5 mm.] increment.

BUILDING LENGTH is measured from outside-to-outside of sidewall-girts, and may be virtually any dimension, to a 1/16 inch [1.5 mm.] increment.

BUILDING LINE is defined as the outside face of secondary structural steel [girts].

BAY SPACING is measured from centerline-to-centerline of primary frames for interior bays and from centerline of the first interior frame to outside of endwall girts for end bays.

EAVE HEIGHT is the vertical dimension at the sidewall, measured from the floor to the intersection of the wall Building Line [the outside of the sidewall girts] and the Roof line [the outside of the roof purlins].

ROOF PITCH is expressed as a ratio of the vertical rise to the horizontal run. For example, a 1:12 [0.833:10] roof pitch has a vertical rise of 1″ [25 mm.] for each 12″ [305 mm.] horizontal run. Roof pitch limitations vary with frame type and/or roof covering.