steelDiameter.literalDesignation
ALL STEEL IN VAULTS TO BE ½φPrinted typical-vault rule, covering the depicted roof/wall vault detail. Half and round/diameter glyph legible; no explicit inch mark or independent diameter-unit convention. Existing0.5in candidate retained without confirmation.
Drawing notation: ALL STEEL IN VAULTS TO BE ½φ
Printed typical-vault rule, covering the depicted roof/wall vault detail. Half and round/diameter glyph legible; no explicit inch mark or independent diameter-unit convention. Existing0.5in candidate retained without confirmation.