Example Calculation:
N3” Mezzanine Deck is supported by four joists (triple span) spaced 90” apart. What would be the lightest gage of B1.5” Mezzanine Deck allowable to achieve 125 pounds per square foot (PSF) assuming a uniform load?

Step 1 Locate the column labeled 90”

Step 2 Match the 90” column with the rows pertaining to triple span

Step 3 Find the lowest value above 125 PSF and match the gage

Solution: 131 PSF = 20GA N3” Mezzanine Deck

Additional Tables Available Upon Request:
• Higher Tensile Strength Steel (KSI)
• L/240 Deflection