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

sec 12 barsx safety and fiberglass grating page 43 img 01

2 HOLE		SAFE LOAD SPAN – 16″		SAFE LOAD SPAN – 18″	SAFE LOAD SPAN – 20″	SAFE LOAD SPAN – 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 – 16″		SAFE LOAD SPAN – 18″	SAFE LOAD SPAN – 20″	SAFE LOAD SPAN – 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 – 16″		SAFE LOAD SPAN – 18″	SAFE LOAD SPAN – 20″	SAFE LOAD SPAN – 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