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Ladder Rungs

     
Standard Stock       
Lengths 60" (1524 mm)  

• H RP&O, ASTM-A-569   ​
 
​ ​ ​ ​ ​
• Stainless Steel Type 316       ​
• Aluminum 5052H32       ​
• Pre-galvanized ASTM-A-525, G-90 on special order       ​
• Special lengths cut to order       ​
• End notching also available on special order ​

 

2 HOLE SAFE LOAD SPAN WEIGHT lb/in.ft.
16" 18" 20" 24"
11 GAUGE HRP&O C 377 339 308 265 1.2
D 0.014 0.308 0.025 0.036
14 GAUGE S. STEEL NOT AVAILABLE
.125 ALUMINUM NOT AVAILABLE
Allowable Loads and Deflections: U – uniform load (lb./ft.2) C – concentrated load (lb.)
D– deflection (in.) Safety Factor = 1.67 Deflection Not to Exceed L/120 120L

 

3 HOLE SAFE LOAD SPAN WEIGHT lb/in.ft.
16" 18" 20" 24"
13 GAUGE HRP&O C 260 230 200 175 1.3
D 0.02 0.029 0.037 0.065
14 GAUGE S. STEEL C 280 250 225 185 1.1
D 0.044 0.051 0.065 0.08
.125 ALUMINUM C 240 214 193 161 0.5
D 0.069 0.085 0.099 0.137
Allowable Loads and Deflections: U – uniform load (lb./ft.2) C – concentrated load (lb.)
D– deflection (in.) Safety Factor = 1.67 Deflection Not to Exceed L/120 120L

 

4 HOLE SAFE LOAD SPAN WEIGHT lb/in.ft.
16" 18" 20" 24"
13 GAUGE HRP&O C 490 440 400 345 1.5
D 0.032 0.045 0.05 0.065
14 GAUGE S. STEEL C 415 375 340 290 1.2
D 0.02 0.029 0.04 0.05
.125 ALUMINUM C 390 350 320 255 0.7
D 0.28 0.041 0.05 0.067
Allowable Loads and Deflections: U – uniform load (lb./ft.2) C – concentrated load (lb.)
D– deflection (in.) Safety Factor = 1.67 Deflection Not to Exceed L/120 120L

 

 

 

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