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 Engineering Tables - PPH Walkway Systems Support Pressure Tables

Table 1: Roof Pressure Under 2' Wide Walkway for Various Load Cases Shown

          One Two One Two One Two
Load Case 25 psf 50 psf 75 psf 100 psf 150 lb 150 lb 200 lb 200 lb 250 lb 250 lb
Pads 12"x12" 0.9 psi 1.6 psi 2.3 psi 3.0 psi 1.2 psi 2.3 psi 1.6 psi 3.0 psi 1.9 psi 3.7 psi
Pads 18"x18" 0.4 psi     0.7 psi 1.1 psi 1.4 psi 0.6 psi 1.1 psi 0.7 psi 1.4 psi 0.9 psi 1.7 psi

Table 2: Roof Pressure Under 3' Wide Walkway for Various Load Cases Shown
  
          One Two One Two One Two
Load Case 25 psf 50 psf 75 psf 100 psf 150 lb 150 lb 200 lb  200 lb 250 lb 250 lb
Pads 12"x12" 1.3 psi    2.3 psi 3.4 psi 4.4 psi 1.3 psi 2.4 psi 1.7 psi 3.0 psi 2.0 psi 3.7 psi
Pads 18"x18" 0.6 psi    1.1 psi 1.5 psi 2.0 psi 0.6 psi 1.1 psi 0.8 psi 1.4 psi 0.9 psi 1.7 psi

Table 3. Roof Pressure Under 4' Wide Walkway for Various Load Cases Shown
 
          One Two One Two One Two
Load Case 25 psf 50 psf 75 psf 100 psf 150 lb 150 lb 200 lb 200 lb 250 lb 250 lb
Pads 18"x18" 0.9 psi      1.5 psi 2.2 psi 2.8 psi 0.8 psi 1.2 psi 0.9 psi 1.5 psi 1.1 psi 1.8 psi