Metal Posts for Signs Markers and Delineators Standard 720011-01.pdf
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- Attached to
- JPMC Steel Tubular Posts
- Solicitation number
- 25-416CMS-BOSS4-B-46736
- Issued by
- Illinois
About this file
This document is a standard specification from the Illinois Department of Transportation (IDOT) for metal posts used in highway signage, markers, and delineators, dated January 1, 2009. The standard, identified as Standard 720011-01, provides detailed technical specifications for three post types (Type A, Type B, and Type C) made of steel and aluminum, with comprehensive dimensional and structural requirements. The document includes cross-sectional diagrams, detailed measurements in both imperial and metric units, and general notes specifying minimum section modulus, hole spacing, and material characteristics.
The specification covers post dimensions, steel and aluminum weight specifications, and optional taper configurations, with precise technical details for each post type. The standard provides engineers and contractors with exact technical requirements for sign post construction, including minimum section modulus calculations, hole spacing (typically 55 holes spaced at 1-inch intervals), and standardized length specifications. The document appears to be an internal engineering standard that would be referenced in transportation infrastructure projects, particularly for highway signage and traffic control equipment installations.
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Text version
TYPE A
TYPE B
(78)
(32)
(37)
(3,654)
0.223
(2.98)
2.00
(89)
(41)
(48)
(7,128)
0.435
(1.34)
0.90
(81)
(32)
(38)
(5,588)
0.341
(4.46)
3.00
(118)
(57)
(60)
(14,552)
0.888
(1.93)
1.30
L e n g th a s s p e c if ie d
M in h o le s s p a c e d a t
(2 c ts
(2 a b c x x optional
Taper
(7
(2
L e n g th a s s p e c if ie d
M in h o le s s p a c e d a t
(2 c ts optional
Taper
(7 optional
Taper
(3
(2 s p a c e d a t
(2 c ts
M in h o le s
(2
(50)
(17)
(2 .1 m (U n le s s o th e r w is e s p e c if ie d
Steel - 1.12 lbs./ft. (1.67 kg/m) unless otherwise shown.
All dimensions are in inches (millimeters) section.
their length, Sx-x shall be computed for the net holes are punched or drilled for more than half x-x axis of the post as shown. For posts in which
Sx-x is the minimum section modulus about the
(10).8 3All holes are
Dimensions shown for cross sections are minimum.
a b c
(mm³) in.³
Sx-x
(kg/m) lbs./ft.
Steel
Aluminum
Steel
Aluminum
1-1-09
1-1-97
English (metric).
Switched units to
Renum. Standard 2350-4.
STANDARD 720011-01
D D D D
E E
MARKERS & DELINEATORS
METAL POSTS FOR SIGNS,
SECTION E-E
TYPE CTYPE B
SECTION D-D
TYPE A
GENERAL NOTES
Illinois Department of Transportation
January 1, 2009
ENGINEER OF POLICY AND PROCEDURES
APPROVED January 1, 2009
ENGINEER OF DESIGN AND ENVIRONMENT
IS
S
U E
D -1 -9
PASSED
DATE REVISIONS
EXHIBIT A
EXHIBIT A
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