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Florida Department of Transportation T EMPORARY B ARRIER S YSTEMS FDOT Contacts: District Construction Marshall Douberley 863-519-2382 marshall.douberley.

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Presentation on theme: "Florida Department of Transportation T EMPORARY B ARRIER S YSTEMS FDOT Contacts: District Construction Marshall Douberley 863-519-2382 marshall.douberley."— Presentation transcript:

1 Florida Department of Transportation T EMPORARY B ARRIER S YSTEMS FDOT Contacts: District Construction Marshall Douberley Earl Taylor FDOT Contacts: District Construction Marshall Douberley Earl Taylor

2 2 T EMPORARY B ARRIERS Steel Precast Concrete Low Profile Water Filled Guardrail

3 T EMPORARY B ARRIERS Test Vehicles NCHRP (National Cooperative Highway Research Program) 350: 820C and 2000P MASH (Manual On Assessing Safety Hardware): 1100C and 2270P Includes Passenger Cars Of All Sizes, Sport/Utility Vehicles, Mini-Vans, Vans and Pick-up Trucks NCHRP 350 = 820C (1800 lb.) Passenger 20 deg. MASH = 1100C ( deg. NCHRP 350 = 2000P (4400 lb.) Pickup 25 deg. MASH = 2270P ( deg. TL-2 tested at 70 km/h (44 mph) TL-3 tested at 100 km/h (62 mph) 3

4 4 P RECAST C ONCRETE Temporary Barriers

5 5 I NDEX 415 B ARRIER W ALL Temporary Barriers Index 415 units constructed prior to October 1, 2002 may be used until September 30, 2012 THROUGH JUNE 30, 2012 LETTING with usage of ‘FDOT Snake Pin’ Interconnection

6 6 I NDEX JJ H OOK Temporary Barriers

7 7 I NDEX 415 AND JJ H OOK Free Standing Rigid Pavement (Concrete) Flexible Pavement (Asphalt) Cross Slope of 1 to 10 or flatter Required Between Other Types of Barriers Varies on Use, Location and Speed

8 Required Between Other Types of Barriers 8 I NDEX 415 AND JJ H OOK

9 Required Between Other Types of Barriers 9 I NDEX 415 AND JJ H OOK

10 Required Between Other Types of Barriers 10 I NDEX 415 AND JJ H OOK

11 11 I NDEX 415 AND JJ H OOK Free Standing Rigid Pavement (Concrete) Flexible Pavement (Asphalt) Cross Slope of 1 to 10 or flatter Required Between Other Types of Barriers Varies on Use, Location and Speed

12 12 I NDEX 415 AND JJ H OOK

13 13 I NDEX 415 AND JJ H OOK Installation Work Zone Speed Offset to Travel-way Right Shoulder 45 mph or Less 50 mph and Greater Deflection Space Shielding 1’ min. 2’ preferred 2’ min. 4’ preferred Traffic Side Above Ground Hazards 1’ min. 2’ preferred 45 mph or Less Drop-Off Hazards 50 mph and Greater 2’ min. 4’ preferred 2’ min. 4’ preferred a. Drop-Off 4’ or less and No Traffic below a. All Drop-off conditions other than “a” 2’ min. 4’ min. 2’ min. 4’ min.

14 14 I NDEX 415 AND JJ H OOK Installation Work Zone Speed Offset to Travel-way Separating Traffic 45 mph or Less 50 mph and Greater Deflection Space Shielding 1’ min. 2’ preferred 2’ min. 4’ preferred Adjacent Opposing Traffic 1’ min. 2’ preferred 2’ min. 4’ preferred Traffic Side

15 15 I NDEX 414 – T YPE K Temporary Barriers Only Type K barrier is approved for use on bridges 12’-6” Segment Length

16 16 T YPE K Bolted Staked Free Standing Backfilled Installation Rigid Pavement (Concrete) Flexible Pavement (Asphalt) Cross Slope of 1 to 10 or flatter Surface Required Between Type K Freestanding, Bolted, Staked and Back Filled Required Between Other Types of Barriers Transitions Varies on Type of Installation (above), Use, Location and Speed Deflection Distance

17 T YPE K Required Between Type K Freestanding, Bolted, Staked and Back Filled Required Between Other Types of Barriers Transitions 17

18 18 T YPE K Bolted Staked Free Standing Backfilled Installation Rigid Pavement (Concrete) Flexible Pavement (Asphalt) Cross Slope of 1 to 10 or flatter Surface Required Between Type K Freestanding, Bolted, Staked and Back Filled Required Between Other Types of Barriers Transitions Varies on Type of Installation (above), Use, Location and Speed Deflection Distance

19 19 T YPE K See Index Sheet 5 Bolted See Index Sheet 6 Staked See Index 414 -Sheet 6 & 7 Free Standing See Index Sheet 7 Back Filled

20 T YPE K See Index Sheet 5 Bolted 20

21 T YPE K See Index Sheet 6 Staked 21

22 T YPE K See Index 414 -Sheet 6 Free Standing Roadway 22

23 T YPE K See Index 414 -Sheet 6 Free Standing Bridge 23

24 T YPE K See Index 414 -Sheet 7 Free Standing Roadway Median 24

25 B ARRIER S YSTEM P LACEMENT Temporary Barriers 25

26 B ARRIER T ERMS Work Area Approach End – The portion of a barrier system exposed to approaching traffic. 26

27 B ARRIER T ERMS Work Area Trailing End – Downstream end of a barrier system, not exposed to approaching Traffic. 27

28 B ARRIER T ERMS Work Area Unidirectional – Exposed to traffic approaching from one direction only. 28

29 B ARRIER T ERMS Work Area Bidirectional – Exposed to traffic approaching from opposing directions 29

30 B ARRIER T ERMS Work Area Point of Departure - A point on the edge of a lane at which an errant vehicle leaving the lane will likely impact the leading face of a hazard or area of concern. 30

31 B ARRIER T ERMS Work Area Departure Line - A line extending from the Point of Departure to the back of a hazard or Clear Zone 31

32 B ARRIER T ERMS Work Area Departure Rate - The rate at which the Departure Line leaves the roadway and extends to the back of a hazard or CZ. 1:16 or 1:13 32

33 B ARRIER T ERMS Work Area Work Area INSIDE Clear Zone Limit use the Back of Hazard or Back of Work Area Inside Clear Zone 33

34 B ARRIER T ERMS Work Area extends OUTSIDE Clear Zone Limit use the Clear Zone Limit Distance Work Area 34

35 B ARRIER T ERMS Work Area Beginning Length of Need- The point at which a barrier intersects the Departure Line establishes the Beginning of the Length of Need 35

36 B ARRIER T ERMS Work Area Length of Advancement (X) – The distance a longitudinal barrier must be extended in advance of an area of concern in order to adequately shield the hazard. 36 X

37 D d X Example for 45 mph with CZ of 18’ with barrier set at 2’ from Edge of Travel Way and Work Area extends 20’ from Edge of Travel Way X = 16 (18-2) X = 256’ B ARRIER T ERMS (L ENGTH OF A DVANCEMENT ) 37

38 B ARRIER T ERMS Work Area Length Of Need Unidirectional – Barrier needed is from the approach departure line to the trailing departure line. Length of Barrier System Needed 38

39 B ARRIER T ERMS Work Area Length Of Need Bidirectional – Barrier needed is from the approach departure line to the trailing departure line Length of Barrier Wall Needed 39

40 40 L OW P ROFILE B ARRIER

41 41 L OW P ROFILE B ARRIER Design Speeds of 45 mph or less Application Cross Slope of 1 to 10 or flatter Surface Along the run of barrier: Tubular Markers 50’ cc Tangent; 25’ cc radii Approach end: Type 1 Object Marker Supplemental Devices Deflection Distance - 9 inch min Approach End Offset – 6 foot min Deflection Distance & Offset

42 42 L OW P ROFILE B ARRIER Deflection Distance - 9 inch min Approach End Offset – 6 foot min Deflection Distance & Offset

43 L OW P ROFILE B ARRIER 43

44 L OW P ROFILE B ARRIER 44 P ORTABLE T EMP L OW P ROFILE B ARRIER D ESIGN S TANDARD 412

45 4 Systems:  Triton  Guardian  Yodock  Sentry 45 W ATER F ILLED B ARRIERS See QPL

46 W ATER F ILLED B ARRIERS 46

47 47 T EMPORARY G UARDRAIL Same Requirements as Permanent Guardrail 1.Pay Item #102-73, LF Includes End Anchorage. 2. Unless stated otherwise in the plans, temporary guardrail is the property of the contractor.

48 S TEEL B ARRIERS 4 Systems:  Barrier Guard  Orion  Vulcan  Zone Guard 48

49 S TEEL B ARRIERS Bolted (Rigid Pavement) Anchored (Flexible Pavement) Installation Rigid Pavement (Concrete) Flexible Pavement (Asphalt) Cross Slope of 1 to 10 or flatter Surface Required Between Other Types of Barriers Transitions Varies on Type of Installation (above), Location, Speed, and Manufacture Deflection Distance 49

50 S TEEL B ARRIERS 50

51 P AY I TEMS 51 Steel Barrier is alternate design to Type K Barrier!

52 Q UESTIONS ????????????????


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