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12-115.00 Spokane Rock Products: 2012 Street Preservation
Spokane ,,,;,o0Va11ey- DEPARTMENT OF PUBLIC WORKS CHANGE ORDER TO CONSTRUCTION CONTRACT NO: 12-017 PROJECT: 2012 Street Preservation Project - Phase 1 CONTRACT DATE: 6/29/2012 CONTRACTOR: Spokane Rock Products, Inc CHANGE ORDER NO: • 5 CAPITAL IMPROVEMENT PROJECT NO: 0160 BID NO.: 12 -017 DESCRIPTION OF CHANGES This Change Order pays for clean -up along the east curb line of Dishman -Mica Road between University Rd and 16th Avenue to remove a narrow strip of remaining HMA and joint adhesive left by the mobile planing equipment. See the attached Force Account Spreadsheets for Aug 14 and 15 . It also pays for installing barrels to separate opposing traffic during temporary detouring. Item No Description Unit Quantity Unit Price Total Sch C - 44 FORCE ACCOUNT CURB CLEAN -UP CALC 1 $3,092.60 $3,092.60 Sch C - 45 TRAFFIC BARRELS TO SEPARATE OPPOSING LANES DAY 17 $198.80 $3,379.60 Sch C - 46 TRAFFIC BARREL DELIVERY AND PICK—UP LS 1 $660.80 $660.80 Total Amount of this Change Order ( incl. Tax): $7,133.00 SUBSTANTIAL COMPLETION Original Date: 8/24/2012 Prior to this Change Order: 8/27/2012 Including this Change Order: 8/28/2012 Original Working Days: 25 Working Days Added by this CO: 2 Working Days including this CO: 28 THESE CHANGES RESULT IN THE FOLLOWING ADJUSTMENTS OF TOTAL CONTRACT PRICE: ORIGINAL TOTAL CONTRACT AMOUNT $ 630,799.53 ................................................................................................................................... ............................... TOTAL PRIOR CONTRACT CHANGE ORDER AMOUNT $ 62,425.20 ......................................................................................................... .............................. TOTAL CONTRACT PRICE PRIOR TO THIS CHANGE ORDER $ 693,224.73 .......................................... ............................... NET THIS CHANGE ORDER $ 7,133.00 ............................ .................................................................................... .. ................... ............................. TOTAL CONTRACT AMOUNT INCLUDING THIS CHANGE ORDER $ 700,357.73 CONTRACTOR ACCEPTANCE: The contractor hereby accepts this adjustment RECOMMENDED BY: APPROVED BY: APPROVED BY: terms of the original contract for all work perfomed. ATTACHMENTS: CO 5 Exhibit and Specification Distribution DATE: 9 ( Z_, DATE: o • ZO / Z DATE: e DATE: R� ! / ORIGINALS TO: Contractor, City of Spokane Valley Clerk's Office, PW Project File COPIES TO: PW Project File P:Pubficworks /Purchaing /co (9/26/2007) C©i12, -116 Craig Aldworth From: Craig Aldworth Sent: Tuesday, August 07, 2012 9:51 AM To: Paul Hatfield Cc: 'Ed Griner'; Marcy Holt; Steve Worley Subject: 2012 St Pres Phase 1 Field Directive 1 Attachments: 2012 St Pres - Ph 1 Field Directive 1 Sh 2 Rev 8- 7- 12.pdf Paul The City requests that additional grind and inlay be included in the NB Lanes to the edge of existing curb and gutter. See the attached Revised Plan Sheet 2 dated 8 -7 -12. This will add to the contract: Schedule C, Bid Item 9, Planing Bituminous Pavement, 2 ", add —2,700 SY x $0.84/SY = $2,265 Bid Item, 10, HMA CL %2" PG 64 -28,. 17 FT. Depth, add -2,700 SY x $7.40/ SY = $19,980 Total = $22,245 Please call me to discuss. Thanks, Craig Aldworth Project Enginer 720 -5001 ,r. f r 9 i) S i ? r 7C L 2 mMO PAINT EAS11ND PANT EXISTNQ PAMT STRIPE STRIPE iRAVFDED WAY RWNO iRAYL STRPE SCUM 1' OS' �1I PAA RI DNUS BONN 1 2* I / PAVEMENT DEPTN I�• � µ0 HNA PRAY I 1 P. ; D SCHEDULE'C' - DISHMAN MICA RD SCHAFL'R RD TO 220' NORTH OF HERALD RD g fie, E]IRrr �l CUTTER WRR WTTFA AND 9OEWALK. J 1 Z '.")pr-'&TTVF- E SCHEDULE 'C' - DISHMAN MICA RD 220' NORTH OF HERALD RD TO END OF PROJECT SEE PLAN FOR SIGNAL PATCH AREAS xs' +_ +- BEST 8WA'O TRAY EAST 8CUND TRAVEL PlM'IND RITUM PAVEMENT r DEPiH Tll ' AND HMA INLAY FYISTNQ AC.P. I� A 4443 SCHEDULE'B'- 4THAVE DISHMAN MICA RD TO APPROXIMATELY 270' EAST VMES TS' +- TD 1Y +- I�• � FEET 8— 1RAT£L EAST RWND TRAYEL I 1 Ela5RN0 qMR PUMNO RITWMW6 ]O0' + /-IMD PAVCM x' DEPTH CPAVEI. EDGE FOR Mn NUA INLAY 4aW p ly, E1aSTn0 AC.P. � D SCHEDULE 'B' - 4TH AVE TRUDY RD TO LILA AVE I� I m"ND CURB CUTTER m SDEWAU( � VAl6ES x7 + -l0 xY +- RE)AOVE ASPHALT CqC. HEST ROUND TRAVEL EABT BWND TRAYtI. PAVEMENT. SEE PL% F'OH UMITS EXCAVATE TO A TQTAL OEPTN OF 10'• Y -A PAVEMENT PATCH CWPACT'S GRACL AND x -A D Y 2% -TI 6' CSTC CWPACTEO. sPaOn� m Qom' &DE iH SCHEDULE 'B' - 4TH AVE EAST OFLILAAVE TO FARR RD BALL ory a slam. v.En S0 D��.E;pp 4w•W vaxA;R vuuT, n nAa 1eY' (sN7 nl -loon T PRESERVATION PROJECT - PHASE I )14TH AVE I DISHMAN MICA RD SECTION AND DETAILS MYER ®E!Txfl'T..I P: \Public Works \Capital Projects \Street Projects \0162 - Preservation Projects 2012 \Construction Administration \Phase 1 \Pay Estimates \8 -14 Curb Cleaning Force Account Spreadsheet CITY OF 0000%mllh I]& S I ne .AL ,;o*Valleye C. Aldworth 8/18/2012 2012 Street Preservation Project - Phase 1 Curb Cleaning Force Account Spreadsheet For Work Done on 8/14/2012 SUB CONTRACTOR LABOR Prev. Wage Cost w/o Labor Cost w/ Trade Name No. of Hours Rate Burden Burden /Hr Burden 29% P &O Total Labor Eq Operator Wim Gregory Gregory Constr 5 37.74 188.70 7.62 226.79 65.77 292.56 SUB CONTRACTOR EQUIPMENT Unit Cost Total Equipment Item No. Units Unit Qty Unit Type Unit Cost Subtotal 21 % P &O Equipment Bobcat with Hoeram attachment (Gregory Constr) 1 5 HR 19.73 98.65 20.72 119.37 Subcontractor Total F 411.92 12% Prime Markup 49.43 Gregory Construction Cost 461.35 LABOR Trade Name Unit Cost No. of Hours Prev. Wage Rate Cost w/o Burden Labor Burden /Hr Cost w/ Burden 29% P &O Total Labor Eq Operator Joe Hamlin 3.5 26.29 92.02 5.94 112.81 32.71 145.52 Truck Driver Hayhurst 3 23.40 70.20 5.52 86.75 25.16 111.91 Laborer Mike Hickox 3.5 23.51 82.29 5.53 101.65 29.48 131.13 Laborer John Lane 3.5 23.51 82.29 5.53 101.65 29.48 131.13 Laborer Darrell Cousins 3.5 23.51 82.29 5.53 101.65 29.48 131.13 Laborer Maylon Hamlin 3.5 23.51 82.29 5.53 101.65 29.48 131.13 781.94 EQUIPMENT -I Total Force Account Cost 1,499.30 LABOR BURDEN SUMMARY Trade Unit Cost Total Equipment Item No. Units Unit Qty Unit Type Unit Cost Subtotal 21 % P &O Equipment CAT 950E Front Loader 1 3.5 HR 50.44 176.54 37.07 213.61 Dump Truck #394 1 3 HR 11.68 35.04 7.36 42.40 6.20% 2.0886 256.01 -I Total Force Account Cost 1,499.30 LABOR BURDEN SUMMARY Trade Prev. Wage FICA% FUTA% SUTA% L &I" Total Total Wm Gregory Operator 37.74 7.65% 0.80% 6.20% 2.0886 7.62 45.36 SRP Front End Loader Operator 26.29 7.65% 0.80% 6.20% 2.0886 5.94 32.23 SRP Truck Driver 23.40 7.65% 0.80% 6.20% 2.0886 5.52 28.92 SRP Laborer 23.51 7.65% 0.80% 6.20% 2.0886 5.53 29.04 *L &I is $2.0886 per hour P: \Public Works \Capital Projects \Street Projects \0162 - Preservation Projects 2012 \Construction Administration \Phase 1 \Pay Estimates \8 -15 Curb Cleaning Force Account Spreadsheet S"'ICITY OF p6ene ,;,o0Va11ey0 C. Aldworth 8/18/2012 2012 Street Preservation Project - Phase 1 Curb Cleaning Force Account Spreadsheet For Work Done on 8/15/2012 SUB CONTRACTOR LABOR SUB CONTRACTOR EQUIPMENT Unit Cost Total Equipment Item No. Units Unit Qty Unit Type Unit Cost Subtotal 21 % P &O Equipment Bobcat with Hoeram attachment (Gregory Constr) 1 8.5 HR 19.73 167.71 35.22 202.92 Subcontractor Total 1 628.91 12% Prime Markup 75.47 Gregory Construction Cost 704.38 LABOR Trade Name Prev. Wage Cost w/o Labor Cost w/ Labor Burden /Hr Trade Name No. of Hours Rate Burden Burden /Hr Burden 29% P &O Total Labor Eq Operator Wim Gregory Gregory Constr 8 37.74 301.92 0.00 301.92 87.56 389.48 OT Eq Operator Wim Gregory Gregory Constr 0.5 56.61 28.31 0.00 28.31 8.21 36.51 28.92 8.39 37.30 Laborer Joe Arnold 425.99 SUB CONTRACTOR EQUIPMENT Unit Cost Total Equipment Item No. Units Unit Qty Unit Type Unit Cost Subtotal 21 % P &O Equipment Bobcat with Hoeram attachment (Gregory Constr) 1 8.5 HR 19.73 167.71 35.22 202.92 Subcontractor Total 1 628.91 12% Prime Markup 75.47 Gregory Construction Cost 704.38 LABOR Trade Name Prev. Wage No. of Hours Prev. Wage Rate Cost w/o Burden Labor Burden /Hr Cost w/ Burden 29% P &O Total Labor Eq Operator Joe Arnold 6.5 26.29 170.89 5.94 209.50 60.75 270.25 Truck Driver Chris Lewis 1 23.40 23.40 5.52 28.92 8.39 37.30 Laborer Joe Arnold 1 23.51 23.51 5.53 29.04 8.42 37.47 Laborer Chris Lewis 0.5 23.51 11.76 5.53 14.52 4.21 18.73 Laborer Danny 1.5 23.51 35.27 5.53 43.56 12.63 56.20 419.95 EQUIPMENT Total Force Account Cost 1,593.30 LABOR BURDEN SUMMARY Trade Prev. Wage FICA% FUTA% Unit Cost L &I* Total Equipment Item No. Units Unit Qty Unit Type Unit Cost Subtotal 21 % P &O Equipment CAT 950E Front Loader 1 6.5 HR 50.44 327.86 68.85 396.71 Ford Water Truck 1 1 HR 29.58 29.58 6.21 35.79 Wacker 1 2 HR 15.07 30.14 6.33 36.47 0.80% 6.20% 2.0886 5.53 29.04 468.97 Total Force Account Cost 1,593.30 LABOR BURDEN SUMMARY Trade Prev. Wage FICA% FUTA% SUTA% L &I* Total Total Wm Gregory Operator 37.74 7.65% 0.80% 6.20% 2.0886 7.62 45.36 SRP Front End Loader Operator 26.29 7.65% 0.80% 6.20% 2.0886 5.94 32.23 SRP Truck Driver 23.40 7.65% 0.80% 6.20% 2.0886 5.52 28.92 SRP Laborer 23.51 7.65% 0.80% 6.20% 2.0886 5.53 29.04 OVERTIME LABOR BURDEN SUMMARY Trade OT Prev. Wage FICA% FUTA% SUTA% L &I* Total Total Wm Gregory Operator 56.61 7.65% 0.80% 6.20% 2.0886 10.38 66.99 *L &I is $2.0886 per hour SPOKANE ROCK PRODUCTS P. 0. BOX 3808 SPOKANE, WA 99220 10- Aug -12 CITY OF SPOKANE VALLEY 11707 E. SPRAGUE AVENUE # 106 SPOKANE VALLEY, WA 99206 RE: STP.EET PRESERVATION PHASE 1 ITEM: LABOR LIST FOR FORCE ACCOUNT WORK PREV WAGE: WA 1200017/20/2012 EMPLOYEE TYPE HOURLY RATE FICA /FUTA/ SUTA FRINGE BENEFITS L & I Subst Allowance SUBTOTAL MARKUP (29 %) TOTAL Spokane Rock Products Blademan (Automatic) $26.56 $3.76 $12.05 $1.89 $44.26 $12.83 $57.09 Finish Athey and Huber $26.56 $3.76 $12.05 $1.89 $44.26 $12.83 $57.09 Loader Operator (<4 CY) $25.85 $3.66 $12.05 $1.89 $43.45 $12.60 556.05 Loader Operator (4 CY to 8 CY) $26.29 53.72 $12.05 $1.89 $43.95 $12.75 $56.70 Grade Checker $26.01 $3.68 $12.05 $1.89 $43.63 $12.65 $56.28 Roller Operator - Subgrade $24.76 $3.50 S12.05 $1.89 $42.20 $12.24 $54.44 Roler Operator -Dual Drum $26.01 $3.68 $12.05 $1.89 $43.63 $12.65 $56.28 Roller Operator- Finish Paving $26.29 $3.72 $12.05 $1.89 $43.95 $12.75 $56.70 Bobcat Operator $25.69 $3.64 S12.05 $1.89 $43.27 $12.55 $55.81 Backhoe (Under 45,000 GW) $26.01 $3.68 $12.05 $1.89 $43.63 $12.65 $56.28 Greaser or Oiler $25.35 $3.59 $12.05 $1.89 $42.88 $12.43 $55.31 General Laborer $23.51 $3.33 $10.30 $1.89 $39.03 $11.32 $50.34 Asphalt Raker Laborer $23.78 $3.36 $10.30 $1.89 $39.33 511.41 $50.74 Concrete Saw Laborer (Walking) $23.51 $3.33 S10.30 $1.89 $39.03 $11.32 $50.34 Asphalt Roller Laborer (Walking) $23.781 $3.36 $10.30 $1.89 S39.33 $11.41 $50.74 Water Truck Driver -8,000 Gallons $23.401 $3.31 $10.86 $1.89 $39.46 $11.44 $50.90 Trucks End Dumps (>6 CY to 12 CY) $23.40 $3.31 $10.86. $1.89 $39.46 $11.44 $50.90 Lowboy S23.40 $3.31 $10.86 $1.89 $39.46 S11.44 $50.90 Vacuum Truck $23.40 $3.31 $10.86 $1.89 $39.46 $11.44 $50.90 Truck and Pup $23.40 $3.31 $10.86 $1.89 $39.46 $11.44 550.90 Paver Operator $26.29 $3.72 $10.86 $1.89 $42.76 $12.40 $55.16 Screed 0 erator $26.29 $3.72 $10.86 $1.89 $42.76 $12.40 $55.16 Foreman Pave or Grade $27.60 $3.91 $11.55 $1.89 $44.95 S13.03 $57.98 T LaRiviere (Not Current) Blade $43.30 $5.75 $2.08 $51.13 $14.83 $65.96 Backhoe Operator <45 Lbs $37.34 $5.75 $2.09 $45.18 $13.10 $58.28 Backhoe Operator<110 Lbs $37.611 $5.75 $2.12 $45.481 $13.19 $58.67 Skidsteer $36.74 $5.75 $2.07 $44.561 $12.92 $57.49 Grade Checker $37.05 $5.75 $2.09 $44.89 $13.02 $57.91 Roller Operator $35.81 $5.75 $2.02 $43.58 $12.64 $56.22 Truck Driver $35.38 $5.75 $2.00 $43.13 $12.51 $55.63 General Labor $29.34 $5.75 $1.65 $36.74 $10.66 $47.40 Loader Operator (4 -8 CY) $37.34 $5.75 $2.11 $45.20 $13.11 $58.30 Loader Operator (8 -10 CY) $37.61 $5.75 $2.12 $45.48 $13.19 $58.67 Dozer Operator $37.34 $5.75 $2.11 $45.20 $13.11 $58.30 Clearwater Summit (Not Current) Landscape Labor $30.16 $4.20 $1.40 $35.76 $30.37 $46.13 Landscape Operator $36.74 $5.12 $1.70 $43.56 $12.63 556.20 Gregory Excavation Bobcat Operator $37.74 $4.791 $2.89 $45.42 $1117 $58.59 SPOKANE ROCK PRODUCTS P. O. Box 3808 Spokane, WA 99220 CITY OF SPOKANE VALLEY 11707 E. SPRAGUE AVE #106 SPOKANE VALLEY, WA 99206 RE: STREET PRESERVATION PHASE 1 ITEM: EQUIPMENT LIST FOR FORCE ACCOUNT WORK EQUIPMENTTYPE FHWA va SUBTOTAL VHR MARKUP 21% TOTAL Blade 140H CAT $78.75 $78.75 $16.54 $95.29 Athey Fine Grader AB6905 $46.12 $46.12 $9.69 $55.81 RAHCO Fine Grader FG -100C $0.00 $0.00 50.00 S0.00 Loader -938G CAT $61.03 $61.03 $12.82 $73.85 Loader 950E CAT $50.44 $50.44 $10.59 $61.03 Loader 95OF CAT $52.16 $52.16 $10.95 $63.11 Loader 966F CAT $72.56 $72.56 $15.24 $87.80 Loader 980C CAT $101.13 $101.13 $21.24 $122.37 Dozer D4G XL $53.21 $53.21 S11.17 $64.38 Roller Grade Dynpac CC122 $24.39 $24.39 $5.12 $29.51 Roller Pave DD28 IR $26.26 $26.26 $5.51 $31.77 Roller Grade DD90HF IR $72.65 $72.65 $15.26 $87.91 Roller Grade DD118HA IR $80.06 $80.06 $16.81 $96.87 Roller Pave PT125R IR Rubber Tired $45.58 $45.58 $9.57 $55.15 Roller Pave - Wirtgen Hamm HD13 VT $27.20 $27.20 $5.71 $32.91 Roller Pave - Wirtgen Hamm HD14 VT $27.90 $27.90 $5.86 $33.76 Roller Pave - Wirtzen Hamm HD90VO $75.20 $75.20 $15.79 $90.99 Roller Pave - Wirtgen Hamm HD120VO $81.71 $81.71 $17.16 $98.87 Skid Steer -CAT 2468 $34.84 $34.84 $7.32 $42.16 Skid Steer- Bobcat -S160 $29.41 $29.41 $6.18 ... $35.59 Skid Steer - Bobcat -763 $25.05 $25.05 $5.26 $30.31 Skid Steer - Bobcat Breaker Attachment $8.00 $8.00 $1.68 $9.68 Bobcat Excavator 331 $19.17 $19.17 $4.03 $23.20 Backhoe -CASE 580K $27.67 $27.67 $5.81 _$33.48 Backhoe- CAT420D $40.51 $40.51 $8.51 $49.02 Backhoe- CAT420E $42.80 $42.80 $8.99 $51.79 Backhoe Loader -310SG $37.24 $37.24 $7.82 $45.06 Paver -Blaw Knox IR 5510 $249.39 $249.39 $52.37 $301.76 Paver -IR 4410 $196.74 $196.74 $41.32 $238.06 Paver -Slaw Knox PF875 $57.05 $57.05 $11.98 $69.03 Plate Wacker- WP1550AW $15.07 $15.07 $3.16 $18.23 Concrete Saw - Target Portacut IV $17.44 $17.44 $3.66 $21.10 Water 4,000 Gallons- Kenworth T800 $53.93 $53.93 $11.33 $65.26 Water 2,500 Gallons -Ford L9000 $29.58 $29.58 $6.21 $35.79 Rear Dump Truck -(14 CY) 6x4 $74.74 $74.74 $15.70 $90.44 Equipment Trailer Removable Gooseneck $20.53 $20.53 $4.31 $24.84 Vacuum Truck -A7000 SCHWARZE $103.05 $103.05 $21.64 $124.69 Rear Dumps C4500 Diesel (26,000 GVW) $40.27 $40.27 $8.46. $48.73 Rear Dumps 8x4 (85k Lbs) $86.04 $86.04 $18.07 $104.11 Rear Dump Trailer 2 Axle $11.68 $11.68 $2.45 $14.13 Rear Dump Trailer 3 Axle $13.36 $13.36 $2.81 $16.17 Rear Dump Trailer 4 Axle $14.87 $14.87 $3.12 $17.99 5 Kw Generator Honda $4.20 $4.20 $0.88 $5.08 Pickup 1/2 Ton 42 Gas $13.341 $13.341 $2.80 $16:14 ROCK PRODUCTS, INC. PO BOX 3808 SPOKANE, WA 99220 -3808 509 244 -5421 OFFICE 509 244 -2155 FAX August 4, 2012 Mr. Craig Aldworth, PE 11707 E. Sprague Avenue, Suite 106 Spokane Valley, WA 99206 Re: STREET PRESERVATION PROJECT- SPOKANE VALLEY Change Order Request #1 (COR #1) -TC Barrels and Candlesticks for Two Way Traffic Dear Craig, Please find attached, Spokane Traffic Controls, Inc. request for compensation for adding traffic barrels and Candlesticks instead of cones as shown on the drawings. The total request is as follows: 105 Drums x $157.50 + 12% GC Markup — $176.40/Day 40 Candlesticks x $0.50 + 12% GC Markup — $ 22.40 /Day Labor for Delivery and Pickup ($590 x 12% GC) = $660.80 LS Please find attached quote. nce Asphalt Manager PAH /It bit SERVING THE INLAND NORTHWEST WITH Traffic Drums for Dishman -Mica 1- 31-101 105 ct. @ $1.50 ea.= $ 157.50 per day; Traffic Candles for Dishman -Mica 40 ct. @ $ .50 ea.= $ 20.00 per day Labor for load -up, unload 5 hrs. ea. 2 laborers= 10 hrs. @ 40. Per hr. = $ X00. °* Traffic Control Vehicle @ $ 95.00 delivery, $ 95.00 pick -up= $ 190.00 Appendix 2 -2 Channelizing Device Application Matrix Device Type Low Speed (40 mph or less) High Speed (45 mph or greater) Cones — Tangent ✓ ✓ Cones — Taper ✓ A Tall Channelizing Devices — Tangent ✓ ✓ Tall Channelizing Devices — Taper ✓ ✓ Drums — Tangent ✓ ✓ Drums — Taper ✓ R Tubular Markers ✓ x A — Allowed, consider using a more dominate device. R — Recommended device. ✓ — May be used in this situation. x — Requires approval by Region Traffic Engineer. Channelizing Device Spacing Chart (Feet) MPH *Half- Spacing* Taper Tangent 50/70 20 40 80 35/45 N/A 30 60 25/30 N/A 20 40 Channelization Devices (see MUTCD Part 6 and this manual for additional guidance) • All channelizing devices must comply with the requirements of the MUTCD, NCHRP 350 crash performance requirements, and WSDOT Standard Specifications. • Cones — Freeway, high speed and night use requires 28 inches minimum height cones with two white retroreflective bands. Low speed daytime use allows 18 -inch cones without retroreflective bands. • Tall Channelizing Devices — 42 inches in height minimum, using a tapered cone type shape of consistent dimensions regardless of orientation to traffic. A minimum of two white and two orange retroreflective horizontal stripes 6 inches wide. • Drums — 36 inches in height and at least 18 inches wide of consistent dimensions regardless of orientation to traffic. A minimum of two white and two orange retroreflective horizontal stripes 4 to 6 inches wide. • Tubular Markers — Tubular markers should only be used where space restrictions do not allow for other more dominate devices. Tubular markers may be used to divide opposing traffic lanes, divide open lanes in the same direction, and to delineate the edge of a pavement drop off. Freeway, high speed and night use requires a 28 -inch minimum height with two white retroreflective bands. Low speed daytime use allows 18 -inch tubular markers with one retroreflective band. • Flat panel devices and devices with directional stripe patterns are not allowed due to frequency of placement errors. Work Zone Traffic Control Guidelines M 54 -44.04 Page 2 -2 -1 February 2012