Specification Review Specification Review APWA Standards and Specifications
- Slides: 81
Specification Review
Specification Review APWA Standards and Specifications Committee hired Wilson, TREKK and GBA Wilson & Co. – Ric Johnson, PE TREKK – Kim Pemberton, PE GBA – John Cooper, PE Apparently Ric & Kim hate public speaking enough that they both took off and left me holding the bag. Thanks for that…
Scope Review and update specifications • • Current standards References Material specifications Recommendation for future additions Pretty simple, right? Not so much. Project changed
Review Process Spent hours researching latest materials, processes, standards, etc. Found loopholes and closed them Drafted new specification subsections • Subgrade Preparation (lime & fly ash) • Flowable backfill (CLSM) Reorganized to be easier to follow
Review Process Verified referenced standards are current Eliminated metric references Deleted outdated items Updated items Recommendations for future additions, items to consider changing
Review Process Note the separate modification notes for some Sections Formatting will be finalized before publication
Specification Review Survey 116 Responses • • Develop Specification Template Develop Library Verify standard references are current Popular topics • • ADA Utilities Erosion Control Paving
Template
Library
Library Proposed additions to the Library will be reviewed and approved by APWA Standards & Specifications committee
Section 1100 General Conditions • Currently use 1995 EJCDC (modified) • Recommend requiring Owner to use their own front end docs – APWA can’t use EJCDC – Reference use of latest EJCDC General Conditions and applicable sections from Supplementary Conditions – EJCDC require Owner to purchase ($220)
Section 2000 General • Recommend elimination of this Section
Section 2100 Grading & Site Prep • Centralized Trenching, Backfill, Flowable Backfill, etc. • Section 2101 Clearing and Grubbing – Reorganized content • Parts of 2102 moved into 2101 – Deleted Tree marking notations
Section 2100 Grading & Site Prep • Section 2102 Grading – Added NEW Flowable Backfill (CLSM) spec • • • Section 2102. 3. G & H Section 2103. K Requires strength testing results for mix design 75 psi to 150 psi (“digable”) Unit weight of 105 to 125 pcf
Section 2100 Grading & Site Prep • Section 2103 Excavation, Trenching and Backfilling for Piping and Structures – Added Trenching and Backfilling for Pipe • Moved from Section 2600 (Trench width tables, bedding requirements, trench diagrams, etc. ) • Applies to several Sections so moved to here and referenced from other Sections
Section 2150 Erosion Control • Use new APWA Section as is
Section 2200 Paving • Lots of modifications but mostly minor • Met with industry experts • Section 2201 Subgrade Prep – Dropped moisture low end from -2 to -3% • Section 2202 Subgrade Stabilization – New Subsection – Added lime and fly ash treated subgrade
Section 2200 Paving • Section 2203 Aggregate Base – Combined the old 2202 (Untreated Compacted Agg) & 2203 (Drainable Base) – Eliminated crushed aggregate drainable base • No construction procedures included currently • Couldn’t find any DOT’s that use this – Underdrain Standard needs revised
Section 2200 Paving • Section 2204 Prime and Tack Coat – Suggest adding Trackless Tack but need good generic spec first. Use Library for now.
Section 2200 Paving • Section 2205 Asphaltic Concrete Surface and Base – Made testing Contractor’s responsibility – Provincial grade for KC should be PG 64 -28, not PG 64 -22, so made both acceptable – Added Commercial Mix option that adheres to DOT specs (simple and cost effective) – Consider Warm Mix Asphalt subsection (Library)
Section 2200 Paving • Section 2205 Asphaltic Concrete Surface and Base (continued) – Added FRAP (Fractionated Reclaimed Asphalt Pavement) – Prohibited Shingles (can allow via Library) – Chose to leave asphalt cement determination criteria alone (KCMO and others changed) due to concerns with loopholes resulting in long term performance problems
Section 2200 Paving • Section 2205 Asphaltic Concrete Surface and Base (continued) – Require superpave mixes (5 -01 & 6 -01) for roadways – Asphalt placement weather limitations • Added table from Lawrence specs (minimum air & road temps – less rigid than OP) • Deleted minimum laydown temp table (asphalt temp) – not used by DOT’s or others
Section 2200 Paving • Section 2205 Asphaltic Concrete Surface and Base (continued) – Simplified sequence of rolling operation – Suggest adding Rolling Procedure for acceptance – Library? – Eliminated trench rollers – Simplified transverse joint requirement
Section 2200 Paving • Section 2205 Asphaltic Concrete Surface and Base (continued) – Added Superpave Testing Form – Added density requirement for Types 5 -01 and 6 -01
Section 2200 Paving • Section 2206 Asphalt Crack Sealing, Asphalt Crack Filling, Chip Sealing, Slurry Sealing, and Microsurfacing – Recommend simplifying equipment section to match Mo. DOT
Section 2200 Paving • Section 2207 Cold Milling – Consider adding Section on diamond grinding and micro-milling – Added requirement for positive grade control – Added paragraph on opening to traffic • Transitions to existing pavement and utilities
Section 2200 Paving • Section 2208 Portland Cement Concrete Pavement – Included KCMMB • Default requirement if contract doesn’t specify – Kept MCIB (currently located on Concrete Promotional Group website) (http: //concretepromotion. com/MCIB. html) – Added paragraph on concrete overlays • Replaces ultra-thin whitetopping
Section 2200 Paving • Section 2208 Portland Cement Concrete Pavement (continued) – Updated fibers – micro and macro • Used KDOT description of micro-fibers being for control of plastic shrinkage cracks and macrofibers replacing reinforcement – Joint sealing – eliminated hot pour elastomeric type (polymeric hot pour ok)
Section 2200 Paving • Section 2208 Portland Cement Concrete Pavement (continued) – Surface preparation for concrete overlay replaced with reference to Nat’l Conc. Pavement Technology Center Guide Specs. – Joint sealing – use hot pour if not specified in Plans
Section 2200 Paving • Section 2208 Portland Cement Concrete Pavement (continued) – Finishing • No water or “finishing aids” allowed to be applied to surface • Use 10’ straightedge – Curing • Require white pigmented
Section 2200 Paving • Section 2208 Portland Cement Concrete Pavement (continued) – Opening to traffic • Deleted Table and replaced with 100% compressive strength or 450 psi flexural strength – Curb • Concrete shall be consolidated with vibrator
Section 2200 Paving • Section 2208 Portland Cement Concrete Pavement (continued) – Repairing defects • NEED COMMENTS ON TABLE – Requirements vary in other specifications
Section 2200 Paving • Section 2210 Measurement and Payment – Deleted since Measurement and Payment was included in each subsection – Left blank for use at later date
Section 2200 Paving • Section 2211 Smoothness – Modified to refer to DOT specifications for profilograph – If profilograph not required, follow spec
Section 2300 Incidental Construction • Section 2301 Sidewalks, Ramps, Driveways and Paths – Referenced PROWAG (Public Right of Way Accessibility Guidelines) – If compaction not specified, visual approval by Engineer – Test concrete every 50 cuyd (w/ cylinders) • Same as concrete paving • Looking for comments on this (too stringent? )
Section 2300 Incidental Construction • Section 2301 Sidewalks, Ramps, Driveways and Paths – Requires all concrete to be well vibrated – Time limitations for placement per DOT specs • Can be waived by Engineer
Section 2300 Incidental Construction • Section 2302 Asphalt Sidewalks, Driveways and Paths – Only temporary sidewalks – Driveways and Paths in accordance with Asphalt Paving section
Section 2300 Incidental Construction • Section 2303 Rock Blanket – Few small changes • Section 2304 Concrete Paver Stones – Contractor provide certification (material) – Few small changes
Section 2300 Incidental Construction • Section 2305 Maintenance of Traffic – Relocation of devices subsidiary
Section 2300 Incidental Construction • Section 2306 Pavement Markings – Possible future additions (Library) • Urethane • Patterned Cold Plastic • Contrasting Marking – Consider modifying striping and symbol applicability charts • Too many variations in other specifications to change without consensus
Section 2300 Incidental Construction • Section 2306 Pavement Markings – Federal Color Chip No. 13538 • 1 = Gloss finish • 3 = Flat finish – Adhesion to Concrete • ASTM withdrawn • Used KDOT (similar to Lee’s Summit)
Section 2300 Incidental Construction • Section 2306 Pavement Markings – Prequalification • Consider moving to Library • Would allow for certification from Contractor – Paint • Consider expanding to include pavement prep, temperature requirements, etc. – Epoxy • Consider lowering application temp to 40 degrees
Section 2300 Incidental Construction • Section 2306 Pavement Markings – Performance Measures • Deleted pictures of deficiencies and replaced with written descriptions similar to Lee’s Summit spec • Requires removal and replacement at Engineer’s discretion
Section 2300 Incidental Construction • Section 2307 Measurement and Payment – Recommend deleting since each subsection contains already
Section 2400 Seeding & Sodding • Incorporated KCMO supplemental edits from 1990, Liberty, Belton • Temp seeding refers to Erosion Control (Section 2150) • Added Referenced Standards and Definitions • Planting seasons vary a LOT – use Library
Section 2400 Seeding & Sodding • Fertilizer rates – use Library • Native Grasses need more work • Acceptance – consider using Mo. DOT
Section 2500 Sanitary Sewers Used JCW and Lee’s Summit specs with some help from KCMO Section 2501 General • Added cleanup subsection • Added reference to applicable APWA Standards
Section 2500 Sanitary Sewers Section 2502 Materials • Deleted ABS pipe as an option for main line but ok for service lines • Updated Standards – now ANSI/AWWA • For Ductile Iron added hydrogen sulfide resistant lining options • Deleted Vitrified Clay Pipe
Section 2500 Sanitary Sewers Section 2502 Materials • Added pipe options per JCW – Fiberglass – HDPE • Added Service Line subsection • Trenching, bedding and backfill referenced to Section 2100
Section 2500 Sanitary Sewers Section 2502 Materials • Updated Tunneling, Boring and Jacking to meet current industry standards • Added casing spacers for pipe support when tunneling, boring and jacking
Section 2500 Sanitary Sewers Section 2503 Site Prep • No major changes
Section 2500 Sanitary Sewers Section 2504 Excavation • Deleted classifications of excavated materials – all pays the same • Updated Blasting using JCW spec • Trenching now references Section 2100 • Added Sheeting & Shoring • Deleted Clay Pipe Trenching tables
Section 2500 Sanitary Sewers Section 2505 Installation • No major changes except for adding pipe options as shown in Materials section Section 2506 Backfill • Modified to reference Section 2100
Section 2500 Sanitary Sewers Section 2507 Restoration • No major changes • Referred to Section 2400 for Seeding and Sodding • Updated Trees, Shrubs & Bushes
Section 2500 Sanitary Sewers Section 2508 Testing • More strict in accordance with JCW and Lee’s Summit – Hydrostatic infiltration-exfiltration lowered from 200 gal/in/day/mile to 50 – All joint shall be watertight – Updated pressure testing table to match JCW – Deflection testing mandrel sizes updated
Section 2500 Sanitary Sewers Section 2509 Manholes & Special Structures • Deleted brick • Updated precast to meet industry standards • Added KCMMB as option • Updated manhole testing per KCMO
Section 2600 Storm Sewers • Section 2601 General – Only minor changes • Section 2602 Pipe Sewer Construction – Added rubber gasketed pipe (OP) – Deleted cement mortar joint – Replaced plastic compound joint with preformed flexible joint sealant from ACPA
Section 2600 Storm Sewers • Section 2602 Pipe Sewer Construction (continued) – Replaced Corrugated Metal Pipe spec with Liberty’s CMP spec, including tables – Deleted Vitrified Clay Pipe – Added HDPE from Liberty (w/ modifications by Lee’s Summit) – Deleted Ductile Iron Pipe
Section 2600 Storm Sewers • Section 2602 Pipe Sewer Construction (continued) – Deleted Alternative Pipe Materials • Use Library – Flowable Backfill moved to Section 2100 – Granular Bedding reference Section 2100 – Excavation subsections replaced with reference to Section 2100
Section 2600 Storm Sewers • Section 2602 Pipe Sewer Construction (continued) – Laying and Jointing of HDPE added from KCMO and Lee’s Summit – Pipe trenching and bedding details moved to Section 2100
Section 2600 Storm Sewers • Section 2603 Boring and Jacking – Added option of using Flowable Backfill • Section 2604 Structures – Prohibit use of brick – Replaced Metal Castings with Manhole Castings spec from KCMO
Section 2600 Storm Sewers • Section 2605 Open Channels – Provided gradations for two sizes of riprap from KDOT – Grouted riprap deleted due to EPA regulations for habitat • Section 2606 Measurement and Payment – Changed riprap to SQYD instead of CUYD (from KCMO)
Section 2700 Structures • Recommend leaving as is with minor changes to wording
Section 2800 Street Lights • Section 2801 General – Added several subsections from Lee’s Summit spec
Section 2800 Street Lights • Section 2802 Materials & Equipment – Used Lee’s Summit specifications mostly • Current references to industry standards while maintaining intent of APWA and KCMO specs – Recommend creating Standard Drawing for circuit breakers – Added section on lightning arrestors
Section 2800 Street Lights • Section 2802 Materials & Equipment – Photoelectric controls replaced requirement for 1. 5 (+/- 0. 5) footcandles with footcandle level designated by Owner – Added wood poles from KCMO spec – Added ID plate requirement for poles – Pole shall be “finished as specified” replaces old spec that calls out bronze
Section 2800 Street Lights • Section 2802 Materials & Equipment – Used Lee’s Summit spec for Cobra Head luminaire (with modifications) – Added in new section on LED luminaires – Updated Lamp table – LED lamp guidelines to be specified by Engineer due to inconsistency of current standards
Section 2800 Street Lights • Section 2803 Pole Foundation Construction – Added section on concrete foundation requirements from Lee’s Summit/OP – Screw anchor foundations • Prohibit pre-drilling • Used OP’s spec requiring concrete foundation if screw anchor can’t be installed – at contractor’s expense (expect some comments on this)
Section 2800 Street Lights • Section 2804 Underground Cable – No spec for direct bury cable – Used Lee’s Summit and KCMO specs for modifications • Section 2805 Overhead Cable – No changes
Section 2800 Street Lights • Section 2806 External Conduit on Structure – Used Lee’s Summit spec w/ update to standard reference • Section 2807 Feed Point Installation – Reorganized and added installation and wiring subsections from Lee’s Summit spec
Section 2800 Street Lights • • • Section 2808 Pole and Luminaire Installation Section 2809 Grounding Section 2810 System Testing & Acceptance Section 2811 Removals & Relocations Section 2812 Measurement & Payment – Modifications used Lee’s Summit specs mostly but a bit of KCMO and OP
Section 2900 Water Lines • Section 2901 General – Formatted to match other Sections
Section 2900 Water Lines • Section 2902 Materials – Updated Ductile Iron Pipe per KCMO, Liberty and Lee’s Summit – Deleted Cast Iron – Added Fusible PVC per several other Cities – Added Prestressed Concrete Cylinder Pipe per KCMO – Added Butterfly Valves from Liberty
Section 2900 Water Lines • Section 2902 Materials – Added Tapping Sleeves and Extension Kits from Lee’s Summit – Added Corporation Cocks and Blowoff Assemblies – Added a table for bedding material options – Added Casing Pipe Wall Thickness table and updated other components for casing pipe
Section 2900 Water Lines • Section 2903 Construction – Updates trench widths – Added installation requirements for all pipe types – Added fusible PVC jointing requirements
Section 2900 Water Lines • Section 2904 Water Mains Near Sewers – No major changes • Section 2905 Measurement and Payment – No major changes
Moving Forward • Consider addition of Materials Testing Frequency Chart • Assign specification sections to committees for upkeep and occasional review • Separate materials subsections from performance sections
Specification Review Wrap Up Specifications posted to APWA website by Friday, Oct. 21 st Comment period ends November 30 th • Snarky comments interpreted as volunteering Provide comments in Microsoft Word document or in body of e-mail • Reference Section and subsections
Specification Review Wrap Up Complete revisions and adopt in early 2017 Cooper, Johnson and Pemberton • Indentured to specifications committee for eternity
Comments & Questions E-mail comments to: specreview@wilsonco. com Questions: John Cooper (913) 577 -8412 jcooper@gbateam. com Justin Klaudt (816) 701 -3178 Justin. klaudt@wilsonco. com
THANK
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