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  • WAPA Design Checklist | Washington Asphalt Pavement Association
    dryer warmer months At a minimum pavement construction in wetter months should allow for more subgrade preparation time and cost as well as a thicker pavement section Also consider adjusting the pavement design if the pavement construction window must be moved into a time of inclement weather Drainage The minimum grade to ensure good surface drainage is about 1 5 2 percent Slopes less than this are difficult to construct and may not prevent pooling of water during wet weather Mix Designs If possible do not specify new mix designs in paving specifications Specify a currently approved WSDOT design or equivalent Structural Design Adhere to agency owner specifications Prior to finalizing the design of a roadway that will be dedicated as a public street check the minimum design standards required by the City or County in its standard design specification manual Understand the risks of pavement underdesign A structurally underdesigned pavement will almost always look good in the near term In the long term underdesigned pavements are prone to early failure and will amount to a greater total pavement expense Subgrade and drainage problems cannot be accommodated by thicker pavement sections If fundamental subgrade problems or drainage issues are suspected thicker pavement structures may only be of marginal benefit As always a better solution is to address the actual problem Understand the impact of construction loads on a pavement structure Often construction loads are the heaviest loads a pavement structure will encounter If these loads are not accounted for in design a pavement may become overstressed and begin to fail before its associated construction project is complete Consider alternati relationship advice ve pavement structural designs The minimum designs recommended in this Guide are just a starting point Other alternative designs may be more cost effective Consider a pavement design amenable to a staged construction In many cases it is advantageous to build a pavement in stages Early on a layer of ATB in accordance with site paving thicknesses can be placed to allow construction vehicles to access the site without tracking mud or damaging the subgrade Later on near project completion the ATB layer can be repaired if needed and a final surface course can be placed Full depth asphalt pavements should not be used over frost susceptible subgrades A full depth asphalt pavement leaves no room for ice expansion and may fail prematurely when placed over a frost susceptible subgrade Construction Smoothness If smoothness is specified on an overlay of an existing rough road there must be some method of leveling allowed either a leveling course or milling Leveling is necessary to remove the existing bumps roughness and create a reasonably smooth surface on which to pave The paver s self leveling screed can remove small grade imperfections but because HMA differentially compacts it should not be relied upon to remove large grade problems in a single lift Generally pavement thicknesses of 3 5 inches or more may be paved in two lifts The nominal maximum aggregate size used

    Original URL path: http://www.asphaltwa.com/2010/10/11/general-guidance-wapa-design-checklist/ (2016-04-26)
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  • Contact Us | Washington Asphalt Pavement Association
    Evaluation Surface Distressess Maintenance and Rehab Design Catalog Residential Streets Collector Streets Rural Roads Arterials Highways Parking Lots Residential Driveways Pathways Recreational Facilities Heavy Industrial Facilities Airfields Site Paving Awards Winners How To Apply Calendar Industry Events WAPA Events Home Contact Us Contact Us Washington Asphalt Pavement Association Work Phone 425 207 8814 work Work Fax 425 970 3178 work fax Work Email Info AsphaltWa com INTERNET Washington Asphalt Pavement

    Original URL path: http://www.asphaltwa.com/contact-us/#wpcf7-f3651-p299-o1 (2016-04-26)
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  • Contact Us | Washington Asphalt Pavement Association
    Evaluation Surface Distressess Maintenance and Rehab Design Catalog Residential Streets Collector Streets Rural Roads Arterials Highways Parking Lots Residential Driveways Pathways Recreational Facilities Heavy Industrial Facilities Airfields Site Paving Awards Winners How To Apply Calendar Industry Events WAPA Events Home Contact Us Contact Us Washington Asphalt Pavement Association Work Phone 425 207 8814 work Work Fax 425 970 3178 work fax Work Email Info AsphaltWa com INTERNET Washington Asphalt Pavement

    Original URL path: http://www.asphaltwa.com/contact-us/# (2016-04-26)
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  • How To Join | Washington Asphalt Pavement Association
    Industrial Facilities Airfields Site Paving Awards Winners How To Apply Calendar Industry Events WAPA Events Home How To Join How To Join How To Join Any person firm or corporation engaged in or supplying support services to the asphalt paving industry who is interested in promoting high business standards practices and ethics among those engaged in said industry and who is interested in promoting the proper and efficient use of asphalt mixes in accordance with the requirements of the owner shall be eligible for membership There are two types of memberships to the Washington Asphalt Pavement Association Regular Members such as asphalt producers and contractors and Associate Members such as manufacturers equipment suppliers and consultants Regular members of the Washington Asphalt Pavement Association WAPA are also granted membership in the National Asphalt Pavement Association NAPA at no additional cost Regular Members Regular Members shall be persons firms or corporations who are owners and or operators of Hot Mix Asphalt production facilities within the State of Washington provided that said plants meet all of the current requirements for HMA facilities as adopted by the Washington State Dept of Transportation WAPA Regular Membership Application 2016 Associate Members Associate members shall be persons

    Original URL path: http://www.asphaltwa.com/2010/09/13/how-to-join/ (2016-04-26)
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  • Regular Members | Washington Asphalt Pavement Association
    Work Phone 425 313 2600 work Work Fax 425 313 2631 work fax Work Email LSinfo lakesideind com INTERNET Work Email mlee lakesideind com INTERNET Website http www lakesideind com Lakeside Industries Work P O Box 7016 Issaquah WA 98027 work Lakeside Industries Aberdeen Work Phone 360 533 0610 work Work Fax 360 533 1772 work fax Work Email tonyh lakesideind com INTERNET Website Visit Website Lakeside Industries Aberdeen Aberdeen Division Work P O Box 928 Aberdeen WA 98520 work Lakeside Industries Anacortes Work Phone 360 293 2168 work Work Fax 360 293 9784 work fax Work Email rodg lakesideind com INTERNET Website Visit Website Lakeside Industries Anacortes Anacortes Division Contact Rod Gilmore Work P O Box 729 Anacortes WA 98221 work Lakeside Industries Centralia Work Phone 360 736 2847 work Work Fax 360 736 0648 work fax Work Email tonyh lakesideind com INTERNET Website http www lakesideind com Lakeside Industries Centralia Centralia Division Work P O Box 636 Centralia WA 98531 work Lakeside Industries Kent Work Phone 206 343 7375 work Work Fax 253 630 2011 work fax Work Email robd lakesideind com INTERNET Website Visit Website Lakeside Industries Kent Kent Division Contact Rob Dennis Work 18808 SE 257th St Covington WA 98042 work Lakeside Industries Lacey Work Phone 360 491 5460 work Work Fax 360 459 3858 work fax Work Email deans lakesideind com INTERNET Website Visit Website Lakeside Industries Lacey Lacey Division Contact Dean Smith Work P O Box 3004 Lacey WA 98509 work Lakeside Industries Longview Work Phone 360 423 6882 work Work Fax 360 423 1969 work fax Work Email tims lakesideind com INTERNET Website Visit Website Lakeside Industries Longview Longview Division Contact Tim Salberg Work P O Box 576 500 Tennant Way Longview WA 98632 work Lakeside Industries Monroe Work Phone 360 794 7779 work Work Fax 360 794 3399 work fax Work Email Jaime Lee lakesideind com INTERNET Website Visit Website Lakeside Industries Monroe Monroe Division Contact Jaime Lee Work P O Box 247 14282 Galaxy Way Monroe WA 98272 work Lakeside Industries Pt Angeles Work Phone 360 452 7803 work Work Fax 360 457 7932 work fax Work Email georgep lakesideind com INTERNET Website Visit Website Lakeside Industries Pt Angeles Pprt Angeles Division Contact George Peabody Work P O Box 728 Pt Angeles WA 98362 work Lakeside Industries Seattle Eastside Work Phone 360 313 2600 work Work Fax 360 313 2622 work fax Work Email jimw lakesideind com INTERNET Website http www lakesideind com Lakeside Industries Seattle Eastside Greater Seattle Eastside Division Work P O Box 7016 Issaquah WA 98027 work Lakeside Industries Vancouver Work Phone 360 892 5410 work Work Fax 360 253 4475 work fax Work Email rong lakesideind com INTERNET Website Visit Website Lakeside Industries Vancouver Vancouver Division Work P O Box 820465 Vancouver WA 98682 work M Miles Resources Work Phone 253 383 3585 work Work Fax 253 572 8648 work fax Work Email brad griffith milesresources com INTERNET Miles Resources Contact Brad Griffith Home 400 Valley Ave

    Original URL path: http://www.asphaltwa.com/2010/09/05/regular-members/ (2016-04-26)
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  • Associate Members | Washington Asphalt Pavement Association
    Fax 425 485 8489 work fax Work Email Maxwell Martin Hubinternational com INTERNET Website HUB International HUB International NW LLC Contact Max Martin Work 12100 NE 195th St 200 Bothell WA 98011 work Husky Energy Work Phone 778 214 2798 work Work Fax 403 513 1925 work fax Work Email terry steil huskyenergy com INTERNET Website Husky Energy Husky Energy Contact Terry Steil Work 707 8th Ave SW Calgary AB T2P 3G7 Canada work I Idaho Asphalt Supply Work Phone 208 773 0563 work Work Fax 208 773 0969 work fax Work Email mblake Idahoasphalt com INTERNET Website Idaho Asphalt Supply Idaho Asphalt Supply Contact Matt Blake Work 16425 W Prairie Ave Post Falls ID 83854 work L Libra Systems Inc Work Phone 215 256 1700 work Work Fax 215 256 6450 work fax Work Email rtumin librasystems com INTERNET Website Libra Systems website Libra Systems Inc Contact Richard Tumin Work 220 Stahl Road PO Box 336 Harleysville PA 19438 work Lummi Nation Work Phone 360 312 2348 work Work Email robertp lummi nsn org INTERNET Website Lummi Nation Website Lummi Nation Public Works Department Contact Robert Pell Work 2655 Kwina Road Bellingham WA 98226 work M Modern Machinery Work Phone 253 872 3500 work Work Fax 253 872 3519 work fax Work Email mgarza modernmachinery com INTERNET Website Modern Machinery Modern Machinery Contact Monico Garza Work 22431 83rd Ave S Kent WA 98032 work MWV Specialty Chemicals Ingevity Work Phone 843 518 7671 work Work Email bob siffert ingevity com INTERNET Work Email brandon milar ingevity com INTERNET Website Ingevity MWV Speciality Chemicals MWV Specialty Chemicals Ingevity Contact Bob Siffert Work 5255 Virginia Avenue Charleston SC 29406 work N NC Machinery Co Work Phone 425 251 5800 work Work Fax 425 251 6270 work fax Work Email AEvans NCMachinery com INTERNET Website NC Machinery NC Machinery Co Contact Al Evans Work 17025 W Valley Highway Tukwila WA 98188 work P PacWest Machinery LLC Work Phone 206 762 5933 work Work Fax 206 762 3117 work fax Work Email ddouglass pacwestmachinery com INTERNET Website PacWest Machinery LLC PacWest Machinery LLC Contact David Douglas Home 8207 S 216th St Kent WA 98032 home Pape Machinery Work Phone 253 922 8718 work Work Fax 253 922 3562 work fax Work Email s benham papemachinery com INTERNET Website Pape Machinery Pape Machinery Contact Scott Benham Work 3607 20th St E Tacoma WA 98424 work Parametrix Work Phone 206 394 3700 work Work Fax 1 855 542 6353 work fax Work Email rbennett parametrix com INTERNET Website Parametrix Parametrix Contact Ronnie Bennett Work 719 2nd Avenue Suite 200 Seattle WA 98104 work Parker Smith Feek Work Phone 425 709 3761 work Work Fax 425 709 7460 work fax Work Email jpwaskom psfinc com INTERNET Website Parker Smith Feek Parker Smith Feek Contact Jim Waskom Work 2233 112th Ave NE Bellevue WA 98004 work Pavement Services Inc Work Phone 503 235 0377 work Work Fax 503 296 5734 work fax Work Email john psipdx com

    Original URL path: http://www.asphaltwa.com/2010/09/01/associate-members/ (2016-04-26)
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  • Top Down Cracking | Washington Asphalt Pavement Association
    at the bottom of the HMA layer where the tensile bending stresses are the greatest and then progress up to the surface a bottom up crack Most traditional transfer functions used in mechanistic empirical structural design are based on this concept However the late 1990s saw a substantial focus on a second mode of crack initiation and propagation top down cracking There are three basic views on the of top down cracking mechanism High surface horizontal tensile stresses due to truck tires wide based tires and high inflation pressures are cited as causing the highest tensile stresses Age hardening of the asphalt binder resulting in high thermal stresses in the HMA A low stiffness upper layer caused by high surface temperatures Likely the mechanism is some combination of the above The bottom line is that HMA top down cracking is not thoroughly understood and at this time is generally not considered as a causative factor for pavement cracking although it probably should be Two simple suggestions may help in the identification of top how to make money online down cracking In thick HMA pavements consider top down cracking as a possible cracking mechanism Generally previous research has found that in

    Original URL path: http://www.asphaltwa.com/2010/10/01/general-guidance-top-down-cracking/ (2016-04-26)
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  • Pavement Guide | Washington Asphalt Pavement Association
    Winners How To Apply Calendar Industry Events WAPA Events Home Pavement Guide Condition Rating Systems Based on measurements of roughness surface distress skid resistance and deflection pavements can be assigned a score that reflects their overall condition This score sometimes called a pavement condition rating quantifies a pavement s overall performance and can be used to help manage pavement networks By carefully choosing the rating scale called the condition index pavement condition scores can be used to Deighton 1997 Read More Pavement Management Pavement management refers to a systematic process of maintaining upgrading and operating a network of pavements and involves three major components the pavement life cycle the costs associated with this life cycle and pavement management systems Read More Standard Washington Mixes This section lists the standard HMA mixes used in Washington State Read More Water Bleeding and Pumping Water bleeding left two photos occurs when water seeps out of joints or cracks or through an excessively porous HMA layer Pumping right most photo occurs when water and fine material is ejected from underlying layers through cracks in the HMA layer or out the sides of the HMA layer under moving loads Read More Transverse Thermal Cracking Cracks

    Original URL path: http://www.asphaltwa.com/category/6/page/2/ (2016-04-26)
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