RPS RIB Profile - RPS Engineering

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RPS RIB PROFILE
MATERIAL	WT/SQ PLAIN	RECOMMENDED ROOF LEAD SPAN TABLES IN POUNDS PER SQ. FT. / 3 SPAN											FINISH
MATERIAL	WT/SQ PLAIN	4′-0″	4′-6″	5′-0″	5′-6″	6′-0″	6′-6″	7′-0″	7′-6″	8′-0″	8′-6″	9′-0″	FINISH
ALUMINUM													SMOOTH MILL FINISH STUCCO EMBOSSED PAINTED
0.032	51.5 lbs	96	96	79	65	55	47	40	35	31	27	24
0.040	64.4 lbs	142	142	117	97	82	69	60	52	46	41	36

GALVANIZED STEEL													GALV. BRIGHT SPANGLE SILICONE POLYESTER COATED KYNAR
24 guage	132.0 lbs	125	125	103	85	71	61	52	46	40	35	32
22 guage	160.5 lbs	157	157	129	106	89	76	65	57	50	44	39
20 guage	189.1 lbs	187	187	154	128	107	91	79	68	60	53	47
18 guage	246.1 lbs	240	240	199	164	138	118	101	88	77	69	61

ALUMINIZED STEEL													UNIFORM METALLIC MATTE GRAY
24 guage	123.7 lbs	108	108	90	74	62	53	46	40	35	32	28
22 guage	152.3 lbs	136	136	113	93	78	67	57	50	44	39	34
20 guage	180.8 lbs	163	163	135	112	94	80	69	60	53	46	41

NOTES	1. Allowable loads shown are based on stress governing per latest A.I.S.I specification. 2. Allowable loads shown may be increased by 1/3 for wind loading. 3. Applications of this product on roofs with a pitch of less than 12° are not recommended. 4. 24 GA Steel and 0.032″ Aluminum are not recommended for roofing applications.