All earth work paving, materials, and methods used for construction of streets shall conform to Oklahoma Department of Transportation standard specifications for highway construction with the following minimum requirements.
(A) Remove any stumps or roots larger than two inches in diameter, rocks larger than three inches, and any matted roots, to a depth of 18 inches below original ground surface.
(B) Following initial site preparation, the exposed soils should be scarified to a depth of at least eight inches moisture conditioned to within -2% to +2% of the material’s optimum moisture, and recompacted to at least 95% of the material’s standard proctor maximum dry density, moisture shall be maintained until placement of paving. All areas that will receive pavement should be carefully proof rolled with a loaded tandem-axel dump truck prior to fill placement or construction, owner’s representative shall determine subgrade suitability.
(C) Fill shall be placed in lifts not exceeding eight inches loose thickness and compacted to at least 95% maximum dry density.
(D) Earth works shall be performed in such a manner to minimize ponding water on the subgrade. Site shall be maintained near optimum during construction.
(E) All construction signing will be gone in accordance to the standards set forth in the Manual of Uniform Traffic Control Devices, 2009 Edition, Rev. I, and as shown on the drawings.
(F) All street construction materials and methods shall be in accordance with the Oklahoma Department of Transportation standard specifications.
(G) Development/owner shall employ the services of a competent geotechnical investigation firm to sample and test the in-site materials and provide recommendations for paving section and site work if applicable. Actual paving sections shall be recommended by a geotechnical engineer licensed to practice in the state. Paving sections shall not be less than the minimums shown unless approved by the city. A copy of geotechnical engineer recommendations/reports shall be provided to the city.
(H) Contractor shall not vary from approved plans without the approval of the design engineer and the city.
(I) Developer/owner/contractor shall employ the services of a competent construction materials testing firm to provide quality assurance/quality control testing on all street construction activities. A copy of all test reports shall be provided to the city. The city shall have the rights to request additional testing at no cost to the city, if there are compelling issues or questions regarding materials placed.
(J) Minimum testing frequency shall be as follows:
Asphalt finished | In-place density | 1/5000 square feet |
Asphalt haul truck | % asphalt in mix | 1/500 tons |
Asphalt haul truck | Sieve analysis | 1/500 tons |
Base/sub-base | Moisture and density | 1 per 2,500 square feet (minimum 3 tests per lift) |
Concrete | Slump, air, temp | 1 per 50 cubic yards placed or per day |
Cylinders | 1 set (4 cylinders) per 50 cubic yards or per day | |
Embankment/base | Gradation | 1 per source |
Atterberg limits | 1 per source | |
Proctor | 1 per material | |
Embankment/subgrade | Moisture and density | 1 per 2,500 square feet (minimum 3 tests per lift) |
(K) Aggregate base shall be ODOT type “A;”
(L) (1) Concrete shall have a 3,500 psi 28-day compressive strength as a minimum unless noted otherwise:
Cement | ASTM C150, type I or III unless otherwise noted |
Course aggregate | Crushed rock, washed gravel, or other inert material conforming to ASTM C33 |
Forms | (No wood rot or deteriorated wood shall be accepted) Plywood waterproof, resin-bonded, exterior type, face to concrete grade B or better Lumber - straight, uniform width, and thickness and free from knots, offsets, holes, dents, and other surface defects Strips - 3/4" clear white pine, surface against concrete planed Form coating - industrial lubricants “non-crete” form coating, protex “pro-cote” or equal Expansion joints - preformed, bituminous type STM D994, unless otherwise noted Air entraining admixture: ASTM C60; Water reducing admixture: ASTM C494 Type A, Fly Ash; not allowed |
Moisture retaining cover | Polyethylene film, or polyethylene coated burlap meeting ASTM C171 Liquid membrane curing compound: meeting AASHTO M148/ASTM C309 type @ or type 1-D. White pigment or red dye |
Reinforcing steel | ASTM A615, grade 60, unless otherwise noted; Welded wore fabric: ASTM A185 |
Water | Potable, clean, and free from deleterious substances |
(2) Finish surfaces to proper line and grade as shown on plans or directed by city.
(3) Paving surface shall receive a “burlap drag” texture and grooved or tined to produce a skid
resistant surface.
(4) After surface finishing and as soon as practical, cover and cure the entire surface with cotton
or burlap mats, impervious membrane spray, or polyethylene sheeting.
(5) Contractor shall submit a placement and jointing layout plan for approval. Joint panels shall be
situated to avoid joints within a flow line for swale.
(6) Construction joints may be approved only at locations approved by the city.
(7) Contraction joints to be placed at a maximum of 15 feet each way, as noted on the plans, or as directed by the city. Contraction joints may be saw cut or formed.
(8) Expansion joints shall be placed to isolate the payment from structures or fixed objects, such as light foundations, drainage inlets, and buildings.
(9) Surface tolerance shall be tested with a ten-foot straight edge between any two contact points shall not exceed one-eighth inch. Contractor shall correct surface irregularities exceeding the aforementioned tolerance in an acceptable manner.
(10) Exclude traffic from the surface for a period of at least 14 days after the concrete is placed. Paving shall be protected from damage, staining, marring, and the like.
(11) Pavement may be rejected because of unsound concrete, uncontrolled cracking, malfunctioning of the sawed joints, spalling, honeycomb, surface irregularities, or insufficient thickness.
(12) Grade changes within the pavement such as crowns or valleys shall be rounded within five feet each side of the crown or valley to provide a smooth surface.
(13) Hot/cold weather methods shall be employed as required and shall be in accordance with ACI 306.
(Prior Code, § 97.40) (Ord. 1079, passed 10-8-1985; Ord. 1214, passed 9-12-1995; Ord. 1687, passed 11-13-2012)