MDOT SIGN-207-D Specification.pdf

Kimberly Avery Digitally signed by Kimberly Avery DN: o=State of Michigan, email=averyk@michigan.gov, cn=Kimberly Avery Date: 2018.05.09 12:12:18 -04'00'

05/24/18

M-01

M-02

M-03

M-04

M-05

NUMBER

MDOT PART

LIST OF MATERIALS

NOTES:

2 15

M-06

M-07

Insert Anchor 3" sq. x 36" 7 ga.

Post, Inner 2 1/2" sq. x variable length 10 ga.

5/16"- 18 Grade 5, 3" corner bolt

M-05a 5/16"- 18 Steel flange nuts

M-06a 1/2"- 13 Flange nuts

M-06b 1/2" Flat washers, 3/16" thick, 9/16 I.D., 1-3/8 O.D.

1/2"- 13 x 4" Hot dipped galvanized Grade 8 hex head bolts with 1" of thread

M-07a 1/2"- 13 Hot dipped galvanized Grade 8 nut

M-07b

M-07c

1/2" Hot dipped galvanized flat washers 1" O.D.

1/2" Hot dipped galvanized lock washers 13/16" O.D.

1/2"- 13 x 3" Grade 5 zinc plated flange bolts

1. Refer to the wind-load charts (sheet 11 of 14) for appropriate sign post

2. The anchor M-04 is for concrete installation.

3. Quantity of materials used for the single post installation will be increased according to the number of posts required for proper sign placement.

M-08

Slipbase (8" Sq. SYS.) - Northwest Pipe part #31209

Stub Insert (8" Sq. SYS.)

Slipbase Bolt Keeper Plate (8" Sq. SYS.)

installation.

07/19/16 SIGN-207-D05/24/18

NOT TO SCALE

MICHIGAN DEPARTMENT OF TRANSPORTATION

PLAN DATEF.H.W.A. APPROVAL

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NOTE: THE ORIGINAL SIGNED COPY IS KEPT ON FILE AT THE MICHIGAN DEPARTMENT OF TRANSPORTATION.

BUREAU OF DEVELOPMENT STANDARD PLAN

10 GA. 1 1/4"

2 1/2"

2 1/2"

3 15

7 Ga.

3"

3"

36"

3/4" 1 3/4"

1 1/2"

7/16" !

9/16" !

INSERT ANCHOR, M-04

Variable

STEEL POST, M-03

PERFORATED SQUARE

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4 15

TRAFFIC FLOW

TRAFFIC FLOW

CONCRETE BASE

3"

48"

33"

NOTES:

slopes.

roadway shall be flush with ground on cut slopes. edge of foundation farthest from roadway shall be flush with ground on fill on flat slopes. edge of foundation nearest

1. Top of foundation shall be flush with ground template until the concrete has properly set.

anchor shall be held in correct position with a undisturbed soil in an augered hole. The steel

3. Concrete shall be used and placed against

.12 Cu. Yds.

of the Standard Specifications for Construction.

must be grade M as specified in section 601

2. Concrete for breakaway column foundations

Top View

Elevation View

Concrete Base

5" 6" 6.62"

M02 SQUARE STUB INSERT

M04 INSERT ANCHOR

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5 15

5/8"

1/4"

7/8"

3"

3/4"

1"

1"

3/8"

3/8"

8"

5 7/8"

2 3/8"

5 11/16"

1/2" R

SIDE VIEW

TOP VIEW

NOTES:

6. Square hole tapers from 2 9/16" to 2 1/2" at the bottom.

5. Unless noted: all radii and fillets are 1/4".

4. Casting part number-31209.

remove excess zinc.

3. Clean bore I.D. and counterbore after galvanizing to

2. Hot dip galvanize per ASTM A-153.

1. Material: ASTM A-536 Grade 65-45-12 ductile iron.

5/16" R

2 9/16"

2 9/16"

1.24"

2 5/16"

3/16" 2 9/16" !

3 5/16"

7/16"

BOTTOM VIEW

SLIPBASE

(8" SQUARE SYSTEM)

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6 15

.81"

.45"

.36"

2 5/8"

SIDE VIEW

END VIEW

TOP VIEW

NOTES:

ANSI/AWI D1.1 specifications.

5. All welding to be preformed in accordance with

A572 steel plate.

4. Sliplate shall be fabricated from ASTM A36 or placement may vary as needed.

gasses during hot dip galvanization. Exact hole

3. Hole in Sliplate is to provide escape path for galvanization according to ASTM A 123 G85 min.

2. All fabrication shall be completed prior to

1. Tube shall conform to ASTM A53 GR B or A500.

5/8"5/8"

5"

6" 6"

4"

1/4" Fillet weld

1 1/4"

17/32" !

1 1/4"

1/2"!

8"

1.05"

17/32" !

Gauge Tube

2 1/2" Sq. 7

(8" SQUARE SYSTEM)

SLIPBASE STUB INSERT

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M-08M-08M-08

7 15

M-08

26-30 ga. ASTM A-563 G-90 coating

Stamp Bolt Keeper Plate Spacer from galvanized sheet

1 1/2"

2"

1 1/2"

2"

1 1/2"

2"

1 1/2"

2"

M-05

3/8" on 6" bolt circle

9/16" ! Holes

1 1/4"

13/16"

2 5/8"

7/16"

1 1/16"

3 1/32"

(8" SQUARE SYSTEM)

BOLT KEEPER PLATE

07/19/16 SIGN-207-D

corner steel bolt

(2) 5/16" - 18 Grade 5 large steel nut

(2) 5/16" - 18 Hex flange

(3) 1/2" - 13 x 3" Hex flange head zinc plated bolt

(3) 1/2" - 13 Hex flange zinc plated nut

(6) 1/2" x 3/32" Heavy duty zinc plated flat washer

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INSTALLATION CHECKLISTINSTALLATION CHECKLISTINSTALLATION CHECKLISTINSTALLATION CHECKLIST

TRAFFIC FLOW

8 15

M-01

M-06

M-05

M-07

M-04

M-03

M-05A

M-06A

M-07A

M-08

M-06B

M-02

M-07b

FIGURE 1

07/19/16 SIGN-207-D

nuts (M-05a).

fasten with two 5/16" corner bolts (M-05) and flange into the 8" Slipbase (M01) of breakaway assembly and the allowable sign area per post/wind load charts),

14. Slide appropriate upright post (M03), (refer to to 80 ft-lbs maximum.

nuts (M-06b) in a circular pattern

13. After fastening all hardware, torque the three 1/2" holes of the triangular points.

12. Repeat step 9, 10 & 11 on the two remaining notched snugly down against the top flat washer (M-06b).

(M-06b) to the steel bolt (M-06) and tighten

11. Complete by fastening the nut above bolts (M-06).

10. Place the second flat washer (M-06b) down on to the through notched hole of assembly (M-01).

9. Insert above bolt (M-06) with flat washer (M-06c) up inverted 1/2" x 3" steel bolts (M-06).

8. Slide each flat washer (M-06b) on each of the three and the 6" stub insert (M02).

7. Align the Slipbase (M01), the bolt keeper (M-08) traffic.

keeper (M08) with the 3 hole side facing on coming

6. Place the square Slipbase (M01) on top of the bolt

6" stub (M02).

5. Place the Slipbase bolt keeper plate (M-08) on the step 14.

4. If breakaway assembly is pre-assembled, proceed to bolts (M-07) washers (M0-7b) and nuts (M-07a).

flow (see figure 1) and fasten with two 1/2" x 4" having the bolt location align with traffic

3. Slide 6" stub (M0-2) of breakaway assembly into anchor grade.(3" max.)

2. Install anchor assembly allowing only two holes above required for concrete footings.

a 48" deep and 12" minimum diameter hole is

a) For concrete installation (required in weak soil), figure .

concrete base and align with the traffic flow (see

1. Install the anchor assembly (M0-4) into the

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INSTALLATION INSTRUCTIONS

9 15

NCHRP 350.

Following these procedures the post and anchor will be installed according to 10.

Use corner bolt to fasten anchor and post.9.

See Sign-100-Series and Sign-120-Series for appropriate bottom height.8.

Insert post with sign into Slipbase six holes deep.7.

rivets for Type III signs.

Install sign on post using MDOT approved hardware for Type II signs and aluminum 6.

Check anchor for plumb and square.5.

Continue to install anchor until two holes are remaining above surface level.4.

Orientate anchor for correct sign placement (see figure 1, sheet 8 of 14).3.

Drill 12" hole 48" deep install concrete foundation.2.

Check with utility companies to mark anchor and post location1.

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350 standards for breakaway sign supports.

ground level upon impact by a vehicle. the breakaway system conforms to NCHRP

The breakaway system is designed to allow a traffic sign to breakaway near

PERFORATED STEEL SQUARE TUBE SIGN BREAKAWAY SYSTEM SPECIFICATIONS

BASIC COMPONENTS:

10 15 washers.

coupling, and clamping bolts including nuts and flat

Top coupling, middle bolt keeper plate, bottom

14. Periodic inspection is recommended.

13. No scheduled re-torque is required.

12. Clamping bolt torque: 80 lbs-ft maximum.

1-1/8" O.D.

11. Flat washers are 3/16" thick, 17/32"I.D, nut.

10. Steel nuts are 1/2", zinc plated flanged length.

9. Clamping bolt size: 1/2" diameter and 3" in flanged bolt.

8. Clamping bolt type: Grade 5, zinc plated thickness: 26-30 gauge.

7. Middle bolt keeper galvanized sheet, plate a bolt circle diameter of 6".

6. Top and bottom triangular steel plates have galvanized (zinc coated) finished.

5. Both top and bottom couplings are hot-dip with a minimum Yield Strength of 50,000 psi.

plate is structural ASTM A572 Grade 50

4. The bottom 5/8" thick triangular steel

46,000 psi.

A-53 Grade B with a minimum Yield Strength of

3. The bottom steel tubing is structural ASTM a 5/8" triangular steel plate.

steel tube (3/16" wall @ 6" long) welded to

2. Bottom coupling consists of a 2 1/2" square a minimum yield strength of 45,000 psi.

A-536 Grade 65-45-12 ductile iron casting with

1. Top casting consists of a 8" triangular ASTM

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SINGLE DOUBLE

* 7'

L2/3

L

L/6L/6

11 15

NOTE:

(MAX.)

21.0 SQ. FT.

(MAX.)

44.0 SQ. FT

For signs over 44 sft. use the charts on SIGN-150-SERIES.

90 MPH WIND SPEED

FOR

TUBE SIGN BREAKAWAY SYSTEM

PERFORATED STEEL SQUARE

height and support spacings.

Sign-100-Series and Sign-120-Series for required minimum bottom the travel lane pavement to the bottom of the sign panel. See

The bottom height is defined as height from the near edge of */**

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5"

1 1/4"

(SQUARE TUBE SUPPORT)

5/16"

3"

FRONT ELEVATION SIDE ELEVATION

BASE PLATE DETAILS

CONCRETE MEDIAN BARRIER CONNECTION

12 15

TYP.

1/4"

1 1/2"

2 1/2"

2 1/2"

Concrete median barrier by MDOT Sign Support Typical Plans)

(spacing as called for

7/16" Diameter holes (typ.)

Plate

11/16" ! Holes (4)

(4" embedment) with washers & nuts full thread anchor bolt

5/8" x 6" Galvanized steel inserted over 6" stub

Steel sign support back to back

Type III signs cutout for stub

Square hole all around with 1/4" fillet weld as weld socket joint

Connect stub to plate

07/19/16 SIGN-207-D

galvanized tubing

2"x 2" Sq.(12 ga) tubing (stub)

Sq.(12 ga) galvanized

1 3/4" x 1 3/4" x 6 5/16"

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RIGHT SIDE VIEW

"6

SIDE ELEVATION

(T

YP

3/ 4" R M

AX.

2 5/8"7/8" 19"

5/16

(Typ.)

1"

6"

1"

3" 4" 3"

1" 4" 1"

1 1/2"

SIDE ELEVATIONSIDE ELEVATION

FRONT ELEVATION

SIDE ELEVATION

TOP VIEW

FRONT VIEW

6"

18"

Max

(SQUARE TUBE SUPPORT)

.69"

MDOT sign support typical plans)

(spacing as called for by

7/16" Diameter holes (typ.)

Concrete glare screen

Bent plate (2) bolts and nuts (2) and fastened with 3/8"x 3" inserted over 6" stub

Steel sign support weld all around.

joint with 1/4" fillet plate as a weld socket

Connect stub to bent hex nut) - 4 required per support

(1" stud type with galvanized washer &

3/8" x 1-9/16" Galvanized expansion anchor to back

Signs back holes (2)

7/16" Dia.

(4"embedment) w/ washers & nuts anchor bolt steel full thread

5/8"x 6" Galvanized

CONCRETE GLARE SCREEN CONNECTION

BENT PLATE DETAILS

07/19/16 SIGN-207-D

13 15 galvanized tubing

(stub) sq. (12 ga)

@ 6-5/16" Steel bar

1 3/4" x 1 3/4" galvanized tubing

2"x 2" sq.(12 ga)

72"

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NOTES:

1. The materials and galvanized finish for the connection components (steel pipe, channels, square tube, stub & plate) shall be per the current MDOT Standard

2. All fastening hardware (bolts, nuts and washers) shall be galvanized to ASTM 153, full thread anchor bolt manufactured to ASTM A36 Mod55. Hex bolt manufactured to

A307.

3. The adhesive anchoring system tested to ASTM E488.

4.

5.

6.

7. Glare screen and barrier connections must be installed to ensure that either a pipe support or a square tube is plumb on the glare screen or concrete barrier wall.

Specifications for Construction after fabrication. (section 919)

Sign substrates shall be aluminum for barrier connections per section 919 of the signs on concrete barriers having a top width of 6 inches or wider.

Use the concrete median barrier connection (square tube support) when installing

Standard Specifications for Construction.

14 15

07/19/16 SIGN-207-D

Square tube support suitable for single sign connection with a maximum of 9 sft.

Back to back sign connections have a maximum of 18 sft.

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TOP VIEW

5"

12"

5/8" (TYP.)

5.678"

SQUARE BOLTDOWN STUB

3/4"! (TYP.)

1.25

1.375

NOTES:

12"

2-3/4"

.62" .50"

Fillet Weld 1/4"

3-7/8"

DETAIL A

.81"

.36"

2 5/8"

1/2"!

8"

1.05"

.44"

3/4"!

(Note 1)

Gauge Tube

2 1/2" Sq.7

.34" R (TYP.)

Base Plate

(Note 2)

A

(Note 3)

SIDE VIEW

FRONT VIEW

15 15

07/19/16 SIGN-207-D

Construction Section 919.02.

nut. Refer to 2012 Specifications for bolt with stainless steel lockwasher and

3. 300 series stainless steel wedge anchor and galvanize to ASTM A-123.

nominal 7 guage, ASTM A-52 GRB fabricate

Steel plate pipe stub 3" square tubing

2. Base plate 1/2" ASTM A-36, 441 OR 572 tolerance on this hole dia. is + - .125" plate, but may vary as needed. The located under the 1/2" hole in the top hot dip galvanizing. This hole should be for escape of zinc and gasses during the

1. The hole in the bottom base is 3/4" dia.

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