Attachment A4 - Standard Plan.pdf
PDF 757 KB Posted
- Solicitation number
- RFP-591-210000001919-1
- Issued by
- Arenac County, Michigan
About this file
This is a Michigan Department of Transportation (MDOT) Bureau of Development Standard Plan (R-60-J) for various types of guardrail installations, including Types A, B, BD, T, TD, MGS-8, and MGS-8D. The document provides detailed technical specifications and engineering drawings for guardrail installations, including post spacing, beam element lengths, offset blocks, splice details, and mounting hardware requirements. The standard plan includes specifications for both wood and steel post installations, with typical post spacing of 6'-3" and effective beam element lengths of 12'-6". Installation heights and ground clearances are specified based on whether the guardrail is installed in conjunction with curbs.
The drawings include precise dimensional requirements for all components, including beam elements, posts, offset blocks, splice bolts, and post bolts. Specific requirements are provided for curved guardrail installations with radii of 150' or less, including metal tags to identify curvature. The plan includes detailed specifications for guardrail reflectors, which must be installed on all standard guardrail runs regardless of roadway lighting, with spacing requirements of 50'-0" on tangent sections and curves with radius ≥1150', and 25'-0" on curves with radius <1150'. The reflector color must match the edge line color.
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Other files
| File | Type | Posted |
|---|---|---|
| Attachment A3 - Special Provision.pdf | ||
| Attachment A1 - Special Provision.pdf | ||
| Attachment A2 - Special Provision.pdf | ||
| Ditching Services-Combined RFP Solicitation Documents.docx | DOCX document | |
| Attachment B1 - Pricing.xlsx | XLSX spreadsheet |
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Text version
WOOD POST STEEL POST ELEVATION SHOWING POST SPACING
GUARDRAIL, TYPE A
ELEVATION SHOWING POST SPACING
GUARDRAIL, TYPE B
( WOOD POST )
GROUND LINE
(TYP.)
SPLICE BOLT
6"
WOOD LINE POST
6" x 8"
(TYP.)
SPLICE BOLT
UNDER NUT
ROUND WASHER
POST BOLT WITH
8"
UNDER NUT
ROUND WASHER
POST BOLT WITH
GROUND LINE
AND TYPICAL POST SPACING
EFFECTIVE BEAM ELEMENT LENGTH
12'-6"
* SEE NOTES FOR GUARDRAIL IN CONJUNCTION WITH CURB
GROUND LINEOPTIONAL
* SEE NOTES FOR GUARDRAIL IN CONJUNCTION WITH CURB
GROUND LINE
BEAM ELEMENT LENGTH
12'-6" EFFECTIVE
POST SPACING
6'-3" TYPICAL6" x 8" WOOD LINE POST
LINE
GROUND
HINGE POINT
SHOULDER
WASHER UNDER NUT
POST BOLT WITH ROUND
COATED NAIL
3" LONG HOT-DIP ZINC
WOOD POST WITH A MINIMUM
TOE NAIL WOOD BLOCK TO
SHOULDER
NORMAL
2'-0"
8"8"(TYP.)
SPLICE BOLT
** 5'-0" OR AS SPECIFIED ON PLANS
** FOR PAVED SHOULDER WIDTHS OF AT LEAST 12', USE 3'-0".
B.L.T.
W.K.P. 1 17 R-60-J
STEEL LINE POST
W6 x 9 OR W6 x 8.5
MGS-8, & MGS-8D
TYPES A, B, BD, T, TD,
GUARDRAIL,
DEPARTMENT DIRECTOR MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVALCHECKED BY:
DRAWN BY:
Michigan Department of Transportation
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
APPROVED BY:
APPROVED BY:
Paul C. Ajegba
BY
PREPARED
DESIGN DIVISION
DIRECTOR, BUREAU OF FIELD SERVICES
DIRECTOR, BUREAU OF DEVELOPMENT
8-6-2020
ELEVATION SHOWING POST SPACING
GUARDRAIL, TYPE BD
( WOOD POST )
BEAM ELEMENT LENGTH
12'-6" EFFECTIVE
POST SPACING
6'-3" TYPICAL
GROUND LINE
* SEE NOTES FOR GUARDRAIL IN CONJUNCTION WITH CURB
6" x 8" WOOD LINE POST
GROUND LINE
WOOD OFFSET BLOCK
6" x 8"
WASHER UNDER NUT
POST BOLT WITH ROUND
8" 8" 8"(TYP.)
SPLICE BOLT
NAIL
HOT-DIP ZINC COATED
A MINIMUM 3" LONG
TO WOOD POST WITH
TOE NAIL WOOD BLOCK
ELEVATION SHOWING POST SPACING
GUARDRAIL, TYPE B (OR BD)
( STEEL POST )
GROUND LINE
POST SPACING
6'-3" TYPICAL
(TYP.)
SPLICE BOLT
GROUND LINE
UNDER NUT
ROUND WASHER
POST BOLT WITH
FOR STEEL POST
WOOD OFFSET BLOCK
ROUTED 6" x 8"
BEAM ELEMENT
POST BOLT
BEAM ELEMENT LENGTH
12'-6" EFFECTIVE
* SEE NOTES FOR GUARDRAIL IN CONJUNCTION WITH CURB
R-60-J
STEEL LINE POST
W6 x 9 OR W6 x 8.5
NUT
ROUND WASHER
FOR STEEL POST
ROUTED 6" x 8" WOOD BLOCK
STEEL LINE POST
W6 x 9 OR W6 x 8.5
(OPTIONAL)
GALVANIZING HOLE
2" TO 3"
MGS-8, & MGS-8D
TYPES A, B, BD, T, TD,
GUARDRAIL,
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
TOP
SIDEFRONT
WOOD OFFSET BLOCKS FOR GUARDRAIL, TYPE B AND TYPE BD
FOR USE ON WOOD POSTS
TOP
FRONT SIDE
FOR USE ON STEEL POSTS
WOOD POST STEEL POST
BEAM ELEMENT SPLICE DETAILS
1'-0•"
2"2" 4‚"4‚"
1„"
\ STEEL POST
POST BOLT SLOT
ƒ" x 2•"
\ POST BOLT SLOT
(TYP.)
SPLICE BOLT SLOT
x 1„"
1'-0•"
2"2" 4‚"4‚"
POST BOLT SLOT
ƒ" x 2•"
(TYP.)
SPLICE BOLT SLOT
x 1„"
\ WOOD POST
\ POST BOLT SLOT AND
3"
1„" ƒ" DIA. HOLE ƒ" DIA. HOLE
(SEE NOTES ON SHEET 16 OF 16)
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
R-60-J
6"
4‚" 3"3"
6"
MGS-8, & MGS-8D
TYPES A, B, BD, T, TD,
GUARDRAIL,
GUARDRAIL, TYPE T
( WOOD POST )
ELEVATION SHOWING POST SPACING
GUARDRAIL, TYPE TD
( WOOD POST )
* SEE NOTES FOR GUARDRAIL IN CONJUNCTION WITH CURB
GROUND LINE
POST SPACING
6'-3" TYPICAL
BEAM ELEMENT LENGTH
12'-6" EFFECTIVE
6" x 8" WOOD LINE POST
HINGE POINT
SHOULDER
LINE
GROUND
WASHER UNDER NUT
POST BOLT WITH ROUND
2'-0"
8"8"(TYP.)
SPLICE BOLT
SHOULDER
NORMAL
Ž
(TYP.)
SPLICE BOLT
Ž
8" 8"
WASHER UNDER NUT
POST BOLT WITH ROUND
6" x 8" WOOD LINE POST
8"
OFFSET BLOCK
6" x 8" WOOD
GROUND LINE
GROUND LINE
POST SPACING
6'-3" TYPICAL
BEAM ELEMENT LENGTH
12'-6" EFFECTIVE
* SEE NOTES FOR GUARDRAIL IN CONJUNCTION WITH CURB
** 5'-0" OR AS SPECIFIED ON PLANS
** FOR PAVED SHOULDER WIDTHS OF AT LEAST 12', USE 3'-0".
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
R-60-J
MGS-8, & MGS-8D
TYPES A, B, BD, T, TD,
GUARDRAIL, TYPE T OR TD
( STEEL POST )
BLOCK AND POST CONNECTION DETAILS
GUARDRAIL, TYPE B
GUARDRAIL, TYPE T
GUARDRAIL, TYPE B
GUARDRAIL, TYPE T
(TYP.)
SPLICE BOLT
Ž
GROUND LINE
FOR STEEL POST
WOOD OFFSET BLOCK
ROUTED 6" x 8"
UNDER NUT
ROUND WASHER
POST BOLT WITH
BEAM ELEMENT
POST BOLT (TYP.)
NUT (TYP.)
(TYP.)
ROUND WASHER
GROUND LINE
POST SPACING
6'-3" TYPICAL
BEAM ELEMENT LENGTH
12'-6" EFFECTIVE
* SEE NOTES FOR GUARDRAIL IN CONJUNCTION WITH CURB
TO WOOD OFFSET BLOCK
CONNECTING STEEL POST
POST BOLT
ROUTED WOOD OFFSET BLOCK
CONNECTING STEEL POST TO
POST BOLT
WOOD POST STEEL POST
ROUTED WOOD OFFSET BLOCK
CONNECTING STEEL POST TO
POST BOLT
TO WOOD OFFSET BLOCK
CONNECTING STEEL POST
POST BOLT
WOOD POST STEEL POST
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
R-60-J
STEEL LINE POST
W6 x 9 OR W6 x 8.5
FOR STEEL POST
ROUTED 6" x 8" WOOD BLOCK
(OPTIONAL)
GALVANIZING HOLE
2" TO 3"
STEEL LINE POST
W6 x 9 OR W6 x 8.5
MGS-8, & MGS-8D
TYPES A, B, BD, T, TD,
TOP
SIDEFRONT
WOOD OFFSET BLOCKS FOR GUARDRAIL, TYPE T AND TYPE TD
FOR USE ON WOOD POSTS
TOP
FRONT SIDE
FOR USE ON STEEL POSTS
WOOD POST STEEL POST
THRIE BEAM ELEMENT SPLICE DETAILS
1'-0•"
2"2" 4‚"4‚"
1„"
\ STEEL POST
POST BOLT SLOT
ƒ" x 2•"
\ POST BOLT SLOT
(TYP.)
SPLICE BOLT SLOT
x 1„"
1'-0•"
2"2" 4‚"4‚"
POST BOLT SLOT
ƒ" x 2•"
(TYP.)
SPLICE BOLT SLOT
x 1„"
\ WOOD POST
\ POST BOLT SLOT AND
3"3"
6"6"
4‚"
3"
1„" ƒ" DIA. HOLE ƒ" DIA. HOLE
(SEE NOTES ON SHEET 16 OF 16)
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
R-60-J
MGS-8, & MGS-8D
TYPES A, B, BD, T, TD,
( WOOD POST )
6" x 8" WOOD LINE POST
LINE
GROUND
HINGE POINT
SHOULDER
WASHER UNDER NUT
POST BOLT WITH ROUND
COATED NAIL
3" LONG HOT-DIP ZINC
WOOD POST WITH A MINIMUM
TOE NAIL WOOD BLOCK TO
SHOULDER
NORMAL
2'-8"
8"
** 5'-8" OR AS SPECIFIED ON PLANS
** FOR PAVED SHOULDER WIDTHS OF AT LEAST 12', USE 3'-8".
6" x 8" WOOD LINE POST
8"
WASHER UNDER NUT
POST BOLT WITH ROUND
NAIL
HOT-DIP ZINC COATED
A MINIMUM 3" LONG
TO WOOD POST WITH
TOE NAIL WOOD BLOCK
GROUND LINE
GUARDRAIL, TYPE MGS-8D
( WOOD POST )
8"
8"8"
GUARDRAIL, TYPE MGS-8
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
R-60-J
MGS-8, & MGS-8D
TYPES A, B, BD, T, TD,
( STEEL POST )
UNDER NUT
ROUND WASHER
POST BOLT WITH
NUT
ROUND WASHER
BEAM ELEMENT
POST BOLT
GROUND LINE
FOR STEEL POST
WOOD OFFSET BLOCK
ROUTED 6" x 8"
FOR STEEL POST
ROUTED 6" x 8" WOOD BLOCK
STEEL LINE POST
W6 x 9 OR W6 x 8.5
STEEL LINE POST
W6 x 9 OR W6 x 8.5
GUARDRAIL, TYPE MGS-8 (OR MGS-8D)
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
R-60-J
(OPTIONAL)
GALVANIZING HOLE
2" TO 3"
MGS-8, & MGS-8D
TYPES A, B, BD, T, TD,
ROUTED WOOD OFFSET BLOCK
CONNECTING STEEL POST TO
POST BOLT
WOOD POST STEEL POST
TO WOOD OFFSET BLOCK
CONNECTING WOOD POST
POST BOLT
1„"
\ STEEL POST
BLOCK AND POST CONNECTION DETAILS
TOP
SIDEFRONT
FOR USE ON WOOD POSTS
TOP
FRONT SIDE
FOR USE ON STEEL POSTS
3"3"
6"6"
4‚"
3"
1„" ƒ" DIA. HOLE ƒ" DIA. HOLE
WOOD OFFSET BLOCKS FOR GUARDRAIL, TYPE MGS-8 AND TYPE MGS-8D
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
R-60-J
(SEE NOTES ON SHEET 16 OF 16)
MGS-8, & MGS-8D
TYPES A, B, BD, T, TD,
6'-3" TYPICAL POST SPACING
12'-6" EFFECTIVE BEAM ELEMENT LENGTH
GROUND LINE
TOP OF RAIL
* SEE NOTES FOR GUARDRAIL IN CONJUNCTION WITH CURB
GROUND LINE
GROUND LINE
\ MGS POST
\ MGS POST
TYPE 1B, 2B OR 3B
APPROACH TERMINAL
OR GUARDRAIL
GUARDRAIL, TYPE BD
GUARDRAIL, TYPE B
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
R-60-J
DETAIL A1, T1, T4, OR T6
GUARDRAIL ANCHORAGE, BRIDGE
GUARDRAIL ANCHORAGE, MEDIAN
GUARDRAIL, TYPE TD
GUARDRAIL, TYPE T
GUARDRAIL, TYPE MGS-8 OR MGS-8D
ELEVATION SHOWING POST SPACING FOR
GUARDRAIL, TYPE MGS-8 OR MGS-8D
GUARDRAIL, TYPE MGS-8 OR MGS-8D
MGS-8, & MGS-8D
TYPES A, B, BD, T, TD,
GUARDRAIL,
BEAM ELEMENT LENGTH
12'-6" EFFECTIVE
BEAM ELEMENT LENGTH
9'-4•" EFFECTIVE
BEAM ELEMENT LENGTH
12'-6" EFFECTIVE
34'-4•" HEIGHT TRANSITION
W-BEAM ELEMENT
STANDARD (12'-6")
BEAM ELEMENT
MGS (9'-4•")
W-BEAM ELEMENT
STANDARD (12'-6")
BEAM ELEMENT LENGTH
9'-4•" EFFECTIVE
BEAM ELEMENT LENGTH
12'-6" EFFECTIVE
28'-1•" HEIGHT TRANSITION
LENGTH
EFFECTIVE
6'-3"
W-BEAM ELEMENT
STANDARD (12'-6")
BEAM ELEMENT
MGS (9'-4•")
POST SPACING
6'-3" TYPICAL
POST SPACING
6'-3" TYPICAL
GUARDRAIL APPROACH TERMINAL TYPE 1B, 2B, OR 3B
GUARDRAIL, TYPE B, GUARDRAIL, TYPE BD, OR
GUARDRAIL, TYPE MGS-8 OR MGS-8D TO
ELEVATION SHOWING TRANSITION DETAIL FOR CONNECTING
GUARDRAIL ANCHORAGE, BRIDGE DETAIL A1, T1, T4 OR T6
GUARDRAIL ANCHORAGE, MEDIAN,
GUARDRAIL, TYPE T, GUARDRAIL, TYPE TD,
GUARDRAIL, TYPE MGS-8 OR MGS-8D TO
ELEVATION SHOWING TRANSITION DETAIL FOR CONNECTING
\ GUARDRAIL POST
\ GUARDRAIL POST
TRANSITION
THRIE BEAM
SYMMETRICAL
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
GROUND LINE
GROUND LINE
\ MGS POST
\ MGS POST
R-60-J
MGS-8, & MGS-8D
TYPES A, B, BD, T, TD,
GUARDRAIL,
BEAM ELEMENT LENGTH
12'-6" EFFECTIVE
BEAM ELEMENT LENGTH
9'-4•" EFFECTIVE
BEAM ELEMENT LENGTH
12'-6" EFFECTIVE
34'-4•" HEIGHT TRANSITION
W-BEAM ELEMENT
STANDARD (12'-6")
BEAM ELEMENT
MGS (9'-4•")
W-BEAM ELEMENT
STANDARD (12'-6")
BEAM ELEMENT LENGTH
9'-4•" EFFECTIVE
BEAM ELEMENT LENGTH
12'-6" EFFECTIVE
28'-1•" HEIGHT TRANSITION
LENGTH
EFFECTIVE
6'-3"
POST SPACING
6'-3" TYPICAL
POST SPACING
6'-3" TYPICAL
BEAM ELEMENT
MGS (9'-4•")
W-BEAM ELEMENT
STANDARD (12'-6")
TERMINAL TYPE 2M
GUARDRAIL APPROACH
TERMINAL TYPE 2M
GUARDRAIL APPROACH
GUARDRAIL APPROACH TERMINAL TYPE 2M
GUARDRAIL, TYPE B TO
ELEVATION SHOWING TRANSITION DETAIL FOR CONNECTING
GUARDRAIL APPROACH TERMINAL TYPE 2M
GUARDRAIL, TYPE T TO
ELEVATION SHOWING TRANSITION DETAIL FOR CONNECTING
GUARDRAIL, TYPE B
\ GUARDRAIL POST
GUARDRAIL, TYPE T
\ GUARDRAIL POST
TRANSITION
THRIE BEAM
SYMMETRICAL
SECTION THROUGH BEAM ELEMENT
Œ
1˜"
3‰" ˆ"
3‚"
-0 + „"
TOLERANCE
…" R
(TYP.)
(TYP.)
•" R
SYMMETRICAL
ABOUT \
•" R
(TYP.) N
E
U T
R A
L
X I
S
1̂ "
10°
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
R-60-J
BEAM ELEMENT SPLICE DETAILS
1'-0•"
2"2" 4‚"4‚"
(TYP.)
SPLICE BOLT SLOT
x 1„"
\ SLOTTED HOLE
SLOTTED HOLE
ƒ" x 2•"
MGS-8, & MGS-8D
TYPES A, B, BD, T, TD,
GUARDRAIL,
4‚"4‚" 2"4‚"4‚"2"
3'-1•"
\ OF POST BOLT SLOTS
3'-1•" 3'-1•"
(TYP.)
SPLICE BOLT SLOT
ž" x 1„"
(TYP.)
POST BOLT SLOT
ƒ" x 2•"
10'-5"
FRONT ELEVATION OF BEAM ELEMENT
4‚"4‚" 2"
13'-6•"
4‚"4‚"2"
3'-1•"
\ OF POST BOLT SLOTS
3'-1•" 3'-1•" 3'-1•"
(TYP.)
SPLICE BOLT SLOT
ž" x 1„"
(TYP.)
POST BOLT SLOT
ƒ" x 2•"
FRONT ELEVATION OF MGS (9'-4•") BEAM ELEMENT
SECTION THROUGH THRIE BEAM ELEMENT
(FOR GUARDRAIL, TYPE T AND TD)
3‰" ˆ"
3‚"
-0 + „"
TOLERANCE
1˜"
Œ
•" R
(TYP.)
1̂ "
10°
…" R
(TYP.)
(TYP.)
•" R
Œ
R-60-J
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
MGS-8, & MGS-8D
TYPES A, B, BD, T, TD,
GUARDRAIL,
FRONT ELEVATION OF THRIE BEAM ELEMENT
4‚"4‚" 2"
13'-6•"
4‚"4‚"2"
> OF POST BOLT SLOTS
(TYP.)
SPLICE BOLT SLOT
ž" x 1„"
(TYP.)
POST BOLT SLOT
ƒ" x 2•"
3'-1•" 3'-1•" 3'-1•" 3'-1•"
4‚"4‚" 2"4‚"4‚"2"
7'-3•"
3'-1•"
SPLICE BOLT SLOT (TYP.)
ž" x 1„"
POST BOLT SLOT (TYP.)
ƒ" x 2•"
4‚"4‚" 2"4‚"4‚"2"
7'-3•"
3'-1•"
POST BOLT SLOT (TYP.)
ƒ" x 2•"
SPLICE BOLT SLOT (TYP.)
x 1„"
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
R-60-J
4‚"4‚"2" 4‚"4‚" 2"
7'-3•"
3'-1•"
POST BOLT SLOT (TYP.)
ƒ" x 2•"
SPLICE BOLT SLOT (TYP.)
ž" x 1„"
ASYMMETRICAL THRIE BEAM TRANSITIONS
NOTE: ASYMMETRICAL TRANSITION TYPE WILL VARY BY LOCATION DEPENDING ON GUARDRAIL LAYOUT
THRIE BEAM TRANSITION
SECTION THROUGH
THRIE BEAM TRANSITION
SECTION THROUGH
THRIE BEAM TRANSITION
SECTION THROUGH
THRIE BEAM TRANSITION
SECTION THROUGH
THRIE BEAM TRANSITION
SECTION THROUGH
THRIE BEAM TRANSITION
SECTION THROUGH
MGS-8, & MGS-8D
TYPES A, B, BD, T, TD,
GUARDRAIL,
SYMMETRICAL THRIE BEAM TRANSITIONS
3'-1•"
3'-1•"
3'-1•"
TO GUARDRAIL, TYPE BD (OR TYPE TD)
DETAIL SHOWING TRANSITION FROM GUARDRAIL, TYPE B (OR TYPE T)
SPLICE BOLT AND POST BOLT
MINIMUM POST BOLT THREAD LENGTH
AT BEAM ELEMENT SPLICE POSTS AND AT INTERMEDIATE POSTS
POST BOLTS, SPLICE BOLTS AND WASHERS
150'
METAL TAG
ROUND WASHER NUT
STANDARD WIDTH VARIABLE WIDTH (FIELD BEND)
M
X
OF TRAFFIC
DIRECTION
OF TRAFFIC
DIRECTION
(TWO REQUIRED FOR TYPE TD)
(ONE REQUIRED FOR TYPE BD)
POST BOLT LENGTH 2'-10"
PAY ITEM: GUARDRAIL, TYPE BD (OR TD) GUARDRAIL, TYPE B (OR T)
PAY ITEM EACH SIDE:
APPROX. 6'-3"
OFFSET BLOCKS (TYPE TD) 6" x 1'-0" x 1'-10"
OFFSET BLOCKS (TYPE BD) 6" x 1'-0" x 1'-3"
OFFSET BLOCKS (TYPE TD) 6" x 9" x 1'-10"
OFFSET BLOCKS (TYPE BD) 6" x 9" x 1'-3"
(TWO REQUIRED FOR TYPE TD)
(ONE REQUIRED FOR TYPE BD)
POST BOLT LENGTH 2'-4"
BOLT LENGTH MINIMUM THREAD LENGTH
18"
26•" 3"
9•" 1ƒ"
2•"
POST
BLOCK
OFFSET
POST BOLTS
NO. LENGTH
SPLICE BOLTS WASHERS
WOOD
WOOD
STEEL
STEEL
WOOD
STEEL
WOOD
STEEL
WOOD
STEEL
(ROUND)
N O
T
N E
E D
D
I
N T
E R
M E
D I
A
P O
S T
S
WOOD
WOOD
WOOD
WOOD
WOOD
WOOD
WOOD
WOOD
A
B
BD
T
TD
REQ'D (NO. REQ'D)(NO. REQ'D)
TYPE
GUARDRAIL
N/A
N/A
26•"
9•"
18"
2"
9•"
9•"
9•"
9•"
* 26•"
18"
(1‚" LONG)
EXTEND MORE THAN •" BEYOND NUT.
(OR TYPE T) TO GUARDRAIL, TYPE BD (OR TYPE TD). POST BOLTS SHALL NOT
* EXCEPT AS SPECIFIED ON DETAIL SHOWING TRANSITION FROM GUARDRAIL, TYPE B
AND 8 ON TYPE B END).
THRIE BEAM TRANSITIONS REQUIRE 20 SPLICE BOLTS EACH (12 0N TYPE T END
1‚" (SPLICE BOLT)
SEE CHART (POST BOLT)
“"Š"
ˆ
RECESS ONE OR BOTH SIDES
•" DIA. x ˆ" DEEP ¤"1ƒ" DIAMETER
•" DIAMETER
1‚" •"
0.012" THICK
ƒ" DIA. HOLE
" ƒ ƒ
1" 3"
4" + „"
METAL TAG
EMBOSSED ƒ" HIGH ON THE
CURVED GUARDRAIL RADIUS
FOR CURVED GUARDRAIL WITH RADIUS OF 150' OR LESS 1715
R-60-J
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
MGS-8, & MGS-8D
TYPES A, B, BD, T, TD,
GUARDRAIL,
1Š" OR 1‹"
CLIPPED HEAD OPTIONAL
MINIMUM POST BOLT THREAD LENGTH
AT BEAM ELEMENT SPLICE POSTS AND AT INTERMEDIATE POSTS
POST BOLTS, SPLICE BOLTS AND WASHERS
STANDARD WIDTH VARIABLE WIDTH (FIELD BEND)
M
X
OF TRAFFIC
DIRECTION
OF TRAFFIC
DIRECTION
APPROX. 6'-3"
BOLT LENGTH MINIMUM THREAD LENGTH
18"
26•" 3"
9•" 1ƒ"
2•"
POST
BLOCK
OFFSET
POST BOLTS
NO. LENGTH
SPLICE BOLTS WASHERS
(ROUND)
REQ'D (NO. REQ'D)(NO. REQ'D)
TYPE
GUARDRAIL
(1‚" LONG)
WOOD
STEEL
WOOD
WOOD
* 26•"
9•"
MGS-8D
WOOD
STEEL
WOOD
WOOD
9•"
18"
MGS-8
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
R-60-J
PAY ITEM: GUARDRAIL, TYPE MGS-8D
GUARDRAIL, TYPE MGS-8 TO GUARDRAIL, TYPE MGS-8D
DETAIL SHOWING TRANSITION FROM
OFFSET BLOCKS (TYPE MGS-8D) 6" x 1'-0" x 1'-2"
OFFSET BLOCKS (TYPE MGS-8D) 6" x 9" x 1'-2"
2'-4" FOR TYPE MGS-8D
POST BOLT LENGTH
2'-10" FOR TYPE MGS-8D
POST BOLT LENGTH
GUARDRAIL, TYPE MGS-8
PAY ITEM EACH SIDE:
NUT.
TO GUARDRAIL, TYPE MGS-8D POST BOLTS SHALL NOT EXTEND MORE THAN •" BEYOND
* EXCEPT AS SPECIFIED ON DETAIL SHOWING TRANSITION FROM GUARDRAIL, TYPE MGS-8
ON TYPE MGS END).
THRIE BEAM TRANSITIONS REQUIRE 20 SPLICE BOLTS EACH (12 0N TYPE T END AND 8
MGS-8, & MGS-8D
TYPES A, B, BD, T, TD,
OF TRAFFIC
DIRECTION
PLACEMENT OF GUARDRAIL REFLECTORS
ONE-WAY TRAFFIC
TWO-WAY TRAFFIC
GUARDRAIL
NOTES GOVERNING THE USE OF GUARDRAIL REFLECTORS
GUARDRAIL REFLECTOR
DIRECTION OF RAIL LAP
TWO-WAY TRAFFIC
ONE-WAY TRAFFIC
3"
2" ƒ
(TYP.)
REFLECTORIZED SIDE FACING TRAFFIC
13 GAGE GALVANIZED
(0.0934") NOMINAL
2ƒ"
‚" R
96° + 4°
OF TRAFFIC
DIRECTION
OF TRAFFIC
DIRECTION
OF TRAFFIC
DIRECTION
OF TRAFFIC
DIRECTION
TRAFFIC
SURFACE FACING
REFLECTORIZED GUARDRAILSEE NOTES BELOW
OF TRAFFIC
DIRECTION
GUARDRAIL
SEE NOTES BELOW
ADJACENT GUARDRAIL POSTS
IN OPPOSITE DIRECTIONS ON
PLACE GUARDRAIL REFLECTORS
OF TRAFFIC
DIRECTION
OF TRAFFIC
DIRECTION
GUARDRAIL
HEIGHT AND COMPATIBILITY WITH POST HOLES.
THE POST BOLT HOLES SHALL BE LOCATED TO ENSURE PROPER RAIL
DEPTH OF THE BLOCK SHALL BE AS SPECIFIED ON THIS STANDARD AND
BEVELS SPECIFIED. THE LENGTH (FRONT AND BACK FACE), WIDTH AND
A 1" BEVELED TOP MAY BE USED IN LIEU OF WOOD BLOCKS WITHOUT
WOOD OFFSET BLOCKS WITH •" BEVELS AT THE TOP AND BOTTOM OR
HEIGHT.
THE POST BOLT HOLES SHALL BE LOCATED TO ENSURE PROPER RAIL
DEPTH OF THE POST SHALL BE AS SPECIFIED ON THIS STANDARD AND
WOOD POSTS WITHOUT BEVELS SPECIFIED. THE LENGTH, WIDTH AND
WOOD POSTS WITH •" BEVELS AT THE TOP MAY BE USED IN LIEU OF
BENT SECTION WILL BE REQUIRED FOR EACH CURVED ELEMENT.
150' OR LESS. A TAG IDENTIFYING THE CURVATURE OF THE SHOP
BEAM ELEMENTS SHALL BE SHOP BENT TO PLAN RADIUS FOR CURVE RADII
GUARDRAIL.
SHOULD BE MEASURED FROM THE GROUND JUST IN FRONT OF THE
THE GUARDRAIL PANEL IS LOCATED BEHIND THE CURB THE RAIL HEIGHT
CLOSEST TO THE EDGE OF THE TRAVELED LANE. WHEN THE FACE OF
GUTTER PAN, WHICH IS THE POINT ON THE GUTTER PAN THAT IS
THE RAIL HEIGHT SHOULD BE MEASURED FROM THE FRONT EDGE OF THE
WHEN THE FACE OF GUARDRAIL IS PLACED FLUSH WITH FACE OF CURB,
GUIDE TO STANDARDIZED HIGHWAY BARRIER HARDWARE."
AGC-ARTBA JOINT COMMITTEE, TASK FORCE 13 PUBLICATION TITLED "A
DETAILS SPECIFIED ON THIS STANDARD ARE ACCORDING TO THE AASHTO-
NOTES:
GUARDRAIL ANCHORAGE, BRIDGE.
GUARDRAIL DEPARTING TERMINALS AND STANDARD PLAN R-67-SERIES FOR
GUARDRAIL APPROACH TERMINALS, STANDARD PLAN R-66-SERIES FOR
SEE STANDARD PLAN R-61-SERIES, R-62-SERIES OR R-63-SERIES FOR
MICHIGAN DEPARTMENT OF TRANSPORTATION
OF
SHEET
PLAN DATEF.H.W.A. APPROVAL
BUREAU OF DEVELOPMENT STANDARD PLAN FOR
R-60-J
BY THE ENGINEER.)
REASONABLY LEVEL BEYOND THE SHOULDER HINGE POINT, AS DETERMINED
EMBEDDED FOR ADDED STABILITY. (NOT NECESSARY WHEN THE SLOPE IS
PLAN, 8'-0" POSTS SHALL BE PROVIDED, WITH THE ADDITIONAL LENGTH
THE SHOULDER HINGE POINT, RATHER THAN AS SPECIFIED ON THIS
WHEN THE PLANS SPECIFY GUARDRAIL (TYPE B OR T) TO BE PLACED ON
REGARDLESS OF ROADWAY LIGHTING.
1. GUARDRAIL REFLECTORS SHALL BE USED ON ALL STANDARD GUARDRAIL RUNS,
b) 25'-0" ON CURVES WITH A RADIUS LESS THAN 1150'.
1150' OR MORE.
a) 5O'-0" ON TANGENT SECTIONS AND CURVES WITH A RADIUS OF
2. GUARDRAIL REFLECTORS ARE TO BE SPACED AT THE FOLLOWING INTERVALS:
APPROPRIATE GUARDRAIL APPROACH TERMINAL STANDARD PLAN.
3. FOR GUARDRAIL REFLECTOR PLACEMENT ON APPROACH TERMINALS, SEE THE
GUARDRAIL DEPARTING TERMINAL.
4. A GUARDRAIL REFLECTOR IS TO BE PLACED ON THE SECOND POST FROM THE
PLACED ON THE UPPER POST BOLT.
5. ON GUARDRAIL, TYPE T AND TYPE TD GUARDRAIL REFLECTORS ARE TO BE
6. GUARDRAIL REFLECTORS SHALL MATCH COLOR OF EDGE LINE.
BY THE ENGINEER.)
REASONABLY LEVEL BEYOND THE SHOULDER HINGE POINT, AS DETERMINED
EMBEDDED FOR ADDED STABILITY. (NOT NECESSARY WHEN THE SLOPE IS
9'-0" POSTS SHALL BE PROVIDED, WITH THE ADDITIONAL LENGTH
SHOULDER HINGE POINT, RATHER THAN AS SPECIFIED ON THIS PLAN,
WHEN THE PLANS SPECIFY GUARDRAIL TYPE MGS-8 TO BE PLACED ON THE
MGS-8, & MGS-8D
TYPES A, B, BD, T, TD,
File details come from the government source that posted it. Updated .