Gregory Highway Resources | Catalogs, Drawings & Specs

Gregory Guardrail and Highway Safety Product Resources

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Review our highway resources to learn more about our galvanized highway guardrails, end treatments, cable barrier systems and more. It is our mission to answer your questions, solve your problems and support your business needs any way we can. Don’t hesitate to contact the Gregory Highway team if you want to know more about our people, products processes or how we can help.

Gregory Highway Safety Products Catalog

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Videos Guardrail MFleat MSKT SAFENCE TTMA-200

Video Resources

MASH MSKT Installation Training 04-28-2017

MASH TL-4 Roller Barrier - Pick Up Test

MSKT MASH SKT Informational Video

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Guardrail

Stamping Codes

Stamping Codes Chart

Manufacturer (GH = Gregory Highway)
AASHTO Specifications
Class: Class A = 12 ga, Class B = 10 ga
Type:
1. Type 1 = Zinc coated 1.8 oz/ft² (550 g/m²) min single spot
2. Type 2 = Zinc coated 3.6 oz/ft² (1100 g/m²) min single spot
3. Type 3 = Uncoated Steel
4. Type 4 = Weathering Steel
Mill Heat Number
Operator identification (A-Z)
Galvanized Lot: 09 = Week (9th week), 17 = Year (2017)

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Convex and Concave Curved Guardrail Panels

Convex and Concave Guardrail

Guardrail sections to be installed on curves with a radius of 5 ft. to 150 ft. can be curved in our fabricating facilities. Terms convex or concave refer to the inward or outward curve relative to the traffic face of the guardrail.

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Finding the radius for a curved guardrail:

Step 1

Starting at the last post in the straight run (point A), lay cloth tape along the path that the curved guardrail will follow.

Step 2

Mark off two points along the curved cloth tape: one at 6 ft. 3 in. (point B), and the second at 12 ft. 6 in. (point C).

Step 3

Pull string directly from starting point (point A) to the second mark-off point (point C).

Step 4

Measure from the first markoff point (point B) over to the midpoint of the taut string. This measurement (D) is the rise.

Step 5

Check the chart to find the radius (R), given the rise (D). Example: a rise of 3 1/8 in. would result in a radius of 60 ft.

RADII	ANGLE	CHORD	HEIGHT / RISE
5	143˚ 14’	9' 5-7/8"	3’ 5”
10	71˚ 37’	11’ 8-3/8”	1’ 10-3/4”
15	47˚ 45’	12’ 1-3/4”	1’ 3-3/8”
20	35˚ 49’	12’ 3-5/8”	11-5/8”
25	28˚ 39’	12’ 4-1/2”	9-3/8”
30	23˚ 52’	12’ 4-7/8”	7-3/4”
35	20˚ 28’	12’ 5-1/8”	6-5/8”
40	17˚ 53’	12’ 5-3/8”	5-7/8”
45	15˚ 55’	12’ 5-1/2”	5-1/4”
50	14˚ 19’	12’ 5-5/8”	4-5/8”
55	13˚ 01’	12’ 5-5/8”	4-1/4”
60	11˚ 56’	12’ 5-3/4”	3-7/8”
65	11˚ 01’	12’ 5-3/4”	3-5/8”
70	10˚ 14’	12’ 5-3/4”	3-3/8”
75	9˚ 33’	12’ 5-3/4”	3-1/8”
80	8˚ 57’	12’ 5-7/8”	3”
85	8˚ 26’	12’ 5-7/8”	2-3/4”
90	7˚ 58’	12’ 5-7/8”	2-5/8”
95	7˚ 32’	12’ 5-7/8”	2-1/2”
100	7˚ 10’	12’ 5-7/8”	2-3/8”
110	6˚ 31’	12’ 5-7/8”	2-1/8”
120	5˚ 58’	12’ 6”	2”
130	5˚ 31’	12’ 6”	1-3/4”
140	5˚ 07’	12’ 6”	1-5/8”
150	4˚ 47’	12’ 6”	1-1/2”