HomeMy WebLinkAboutDRB16-0508_34GUARDRAIL_1487953200.pdf (SEE NOTE 3) _ 1 GENERAL NOTES
3'MIN. 7'POST IDENTIFICATION
1 OBSTRUCTION } il (SEE NOTES ON SHEET 3) 1. RATE OF SLOPE DEPENDS ON GUARDRAIL LOCATION: ,r
1 _ 2'MIN. A. FOR GUARDRAIL FACE 2 FT.OR LESS FROM THE NORMAL EDGE OF PAVED SHOULDER, a
nr
I _,__« 4 (SEE NOTE 4) 27" , CONTINUE THE RATE OF SLOPE OF THE NORMAL PAVED SHOULDER TO THE BREAKPOIN 1 :j(SEE NOTE 7) BREAKPOINT B. FOR GUARDRAIL FACE MORE THAN 2 FT.FROM THE NORMAL EDGE OF THE PAVED SHOULD. .3, COJ'
27" NORMAL EDGE THE SLOPE SHALL BE 10:1 OR FLATTER. DRB
NORMAL EDGE OF (SEE NOTE 7)21 OF PAVED2APPED
PAVED SHOULDER SHOULDER . WHEN SPECIFIED ON THE PLANS,EXTEND A 2 IN.MINIMUM THICKNESS PAVED SURFACE TO A1PROVROV
(SEE (SEE NOTE 1) 1 FT.BEHIND THE GUARDRAIL POSTS OR TO THE EROSION CONTROL CURB AS SHOWN ON t�6 00 AM
7.
ASHALT CUTTING&PATCHING OR OTHER APPROVED METHOD SHALL BE USED TO MINIMIZE DAMAGE
NOTE 1) 1 BREAKPOINT TO ALL PAVED SURFACES UNDER GUARDRAIL INSTALLATIONS.ALL REPAIRS TO THE PAVED AREA
1:1 ,„„. i �� WILL NOT BE MEASURED AND PAID FOR SEPARATELY BUT SHALL BE INCLUDED IN THE COST OF
- VARIABLEMigil
1.5:1 MAX.SLOPE
SLOPE ii ` �AT POST THE WORK.A MINIMUM 3 IN.THICK FIBER REINFORCED CONCRETE PAVEMENT MAY ALSO BE USED
2"MIN.HMA FOR PAVING BENEATH THE GUARDRAIL.INSTALL THE POST IN A 1A IN.OVERSIZED FORMED HOLE
(SEE NOTE 2) FOR GUARDRAIL RUNS AND TERMINALS AS DIRECTED.PAYMENT FOR THIS PAVED SURFACE WILL
EARTH SHOULDER �_..-- BE MADE UNDER A PAVEMENT OR CONCRETE PAY ITEM WITH QUANTITIES SHOWN ON THE PLANS.
OR 2"MIN.HMA
(SEE NOTE 2) 3. THE MINIMUM GUARDRAIL OFFSET FROM PAVED OUTSIDE SHOULDER EDGE SHALL BE:
6'POST 7'POST 0 FT.FOR SHOULDERS 8 FT.OR WIDER.
2 FT.FOR SHOULDERS 6 FT.OR LESS.
NORMAL ROADSIDE INSTALLATION RESTRICTIVE ROADSIDE INSTALLATION THE GUARDRAIL OFFSET FROM PAVED INSIDE SHOULDER EDGE OFA DIVIDED HIGHWAY SHALL BE:
WHEN FILL REQUIRES GUARDRAIL WITH 7 FOOT GUARDRAIL POSTS 0 FT.MINIMUM FOR SHOULDERS 6 FT.OR WIDER.
2 FT.DESIRABLE FOR 4 FT.SHOULDERS.
(SEE NOTE 4) THE ABOVE 2 FT.GUARDRAIL TO SHOULDER OFFSET IS DESIRABLE BUT NOT REQUIRED FOR:
L 1Ik A. FOR AN EXISTING HIGHWAY WITH A DESIGN SPEED LESS THAN 50 MPH,THE MINIMUM OFFSET OF
RAIL IS 0 FT.AND 4 FT.MINIMUM FROM THE TRAVELED WAY.
J
' 3'MIN. � B. FOR A ONE—WAY ONE—LANE RAMP,AND WHERE ONE OR MORE OF THE FOLLOWING ARE TRUE:
11
2"x 6" (1) THE NON—OFFSET GUARDRAIL BEGINS AT LEAST 100 FT.BEYOND RAMP NOSE.
27" ALTERNATIVE 2'MIN. OBSTRUCTION (2) THE NON—OFFSET GUARDRAIL IS NOT LOCATED ON THE RAMP EXIT OR ENTRANCE
(SEE NOTE 7) WOOD CURB CURVE CONNECTION TO THE MAJOR HIGHWAY.
TYPE 6 (NOTE 5)
CURB TYPE 6 CURB (3) THE RAMP SHOULDERS ARE 4 FT.OR WIDER.
(SEE NOTE 1) _ BREAKPOINT USE OF GREATER THAN MINIMUM OFFSET DIMENSIONS IS ENCOURAGED TO MEET THE
4 -AlmDESIRABLE GOAL OF PLACING THE GUARDRAIL AS FAR AS POSSIBLE FROM THE TRAVEL
1111 mm• ..g•� , VARIABLE WAY,EVEN FOR SHORT DISTANCES,WHILE PROVIDING A SMOOTH CHANGE IN GUARDRAIL
�. SLOPE ALIGNMENT.
(SEE NOTE 2) 1111 4. IF 2 FT.CANNOT BE PROVIDED BETWEEN THE BACK OF THE GUARDRAIL POST AND
----------- THE BREAKPOINT,USE 7 FT.GUARDRAIL POSTS.REFER TO THE"RESTRICTIVE
(SEE NOTE 5) ROADSIDE INSTALLATION"DETAIL.
OPTION A ROADSIDE INSTALLATION OPTION B 5. WHEN SPECIFIED ON THE PLANS,INSTALL 4 IN.HIGH TYPE 6 CURB WITH ITS FACE AT OR BEHIND
WITH EROSION CONTROL CURB THE RAIL FACE.AS AN ALTERNATIVE WHEN SPECIFIED ON THE PLANS,INSTALL A 2 IN.x 6 IN.
TREATED(AASHTO M 133)WOOD CURB.FASTEN WITH A 4 IN.LAG BOLT AND WASHER AT
RAIL FACE TO BE 8'MIN. EACH WOOD POST,OR WITH A 1/4 IN.DIA.BOLT WITH WASHER AND NUT AT EACH STEEL POST.
AT OR IN FRONT IF RAIL FACE IS NOT 1 4' IF THE 2 IN.x 6 IN.WOOD CURB IS SPECIFIED,IT WILL BE INCLUDED IN THE COST OF THE GUARDRAIL.
OF CURB FACE �C TIF APPROVED BY THE ENGINEER,A 2 IN.x 4 IN.TREATED WOOD CURB MAY BE SUBSTITUTED FOR
�( AT OR IN FRONT
OF CURB FACE BREAKPOINT THE 2 IN.x 6 IN.CURB AND SET ON TOP OF PAVEMENT SURFACE AND ATTACHED AS DESCRIBED ABOVE.
27" 27" (SEE NOTE 1) NO SPLICING SHALL BE ALLOWED IN WOOD CURBS.ADJACENT BOARDS SHALL BE BUTTED TOGETHER
..,� VARIABLE AND BOLTED AT A POST LOCATION.JOINTS SHALL BE LOCATED AT THE POSTS.
\ \
f 6. SEE SHEET 6 FOR CURB TREATMENTS AT GUARDRAIL TERMINALS.
I- J _ POINT OF SLOPE
SELECTION(POSS) 7. RESET GUARDRAIL IF THIS DIMENSION WILL BE LESS THAN 24 IN.
URBAN ROADSIDE INSTALLATION WITH CURB AND GUTTER 8. ALL W—BEAM SPLICES,AND SPLICES OF TERMINAL CONNECTORS TO W—BEAM SHALL BE
NORMAL FILL SLOPE LAPPED IN THE DIRECTION OF TRAFFIC UNLESS OTHERWISE NOTED.
LOCATION SPACING NORMAL CATCHPOINT 9. MATERIAL TYPE AND SHAPE OF POSTS AND BLOCKS SHALL BE THE SAME THROUGHOUT
ALL LOCATIONS EXCEPT6,-3" THE PROJECT EXCEPT WHEN SPECIFIC POSTS AND BLOCKS ARE SPECIFIED,i.e.AT END
BRIDGE RAIL LOCATIONS EMBANKMENT WITH GUARDRAIL ANCHORAGES AND BOX CULVERTS.
BRIDGE OR STRUCTURE APPROACH SEE SHEETS (NOTE:THE CATCHPOINT REMAINS THE SAME AS THAT FOR 10. CONCRETE MAY BE READY—MIXED OR FIELD—MIXED AND SHALL CONSIST OF A MINIMUM
10& 16 "NORMAL"FILL SLOPE.FOR THE WIDER"Z"DISTANCES,THE OF 1 PART CEMENT TO 6 PARTS AGGREGATE BY VOLUME.
NORMAL CENTER—TO—CENTER POST SPACING VARIABLE SLOPE MAY"CATCH"AT THE POSS.) THE GENERAL NOTES ARE CONTINUED ON SHEET 2.
Computer File Information _ Sheet Revisions Colorado Department of TransportationSTANDARD PLAN NO.
Creation Date: 07/04/06 Initials: SJR R X Date: Comments 4201 East Arkansas Avenue GUARDRAIL TYPE 3
Last Modification Date: 07/04/06 Initials: LTA DOT Denver, Colorado 80222 1
/ 9 PP / (R X) Phone: (303) 757-9083 W-BEAM M-606-1
Full Path: www.dot.state.co.us Desi nSu ort .����
(R-X) � Fax: (303) 757-9820
Drawing File Name: 6060101016.dwg DEPARTMENT OF
R-X Project Development Branch SRJ/LTA Issued B Project Development Branch on 04, 2006 Sheet No. 1 of 16
CAD Ver.: MicroStation V8 Scale: Not to Scale Units: English J p Y 1 P July