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chartNumbered List

  1. Manufacturer (GH = Gregory Highway)
  2. AASHTO Specifications
  3. Class: Class A = 12 ga, Class B = 10 ga
  4. 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
  5. Mill Heat Number Code
  6. Galvanized Lot:  09 = Week (9th week), 17 = Year (2017)


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Stepped list

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 mark-off 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. 

NOTE: 
Follow the steps above for each piece of guardrail section in the curved run. The arc may not be consistent and each consecutive piece of guardrail may differ in radius from the previous one. 

Table example

RADII ANGLE CHORD HEIGHT/RISE
5 143° 9°5-7/8” 3’5”
5 143° 9°5-7/8” 3’5”
5 143° 9°5-7/8” 3’5”
5 143° 9°5-7/8” 3’5”
5 143° 9°5-7/8” 3’5”
5 143° 9°5-7/8” 3’5”
5 143° 9°5-7/8” 3’5”
5 143° 9°5-7/8” 3’5”
5 143° 9°5-7/8” 3’5”
5 143° 9°5-7/8” 3’5”
5 143° 9°5-7/8” 3’5”
5 143° 9°5-7/8” 3’5”
5 143° 9°5-7/8” 3’5”
5 143° 9°5-7/8” 3’5”
5 143° 9°5-7/8” 3’5”
5 143° 9°5-7/8” 3’5”
5 143° 9°5-7/8” 3’5”
5 143° 9°5-7/8” 3’5”
5 143° 9°5-7/8” 3’5”

Bulleted list

Significant thought and consideration went into our decision to move down south. These are the main reasons we chose Decatur: 

  • Decatur has a large industrial presence and manufacturers have flocked there for decades
  • The proximity to the large steel mill will result in greater steel buying power for Gregory Tube
  • Our new trucking partner has lighter equipment, so they are able to ship 49,000 pounds per load instead of 45,000 pounds per load 
  • This move gets us closer to many of our customers who are located in the Southeast
  • We will be able to offer more competitive prices, quicker turnarounds and on-time deliveries 

“Gregory took a chance on us at a difficult time in the market. When prices of steel escalate, there’s no warning. Gregory helped us out with flexible pricing, and they’ve played a huge role in our growth over the years.” `

Mike Bullington

Owner at Bullington Construction