260.02 Materials.
250.04 Method of Measurement.
a.Disposal of Hydrocarbon Contaminated Soil . The disposal of hydrocarbon contaminated soil will be measured by the cubic yard {cubic meter}. Soil that is not disposed as contaminated soil and is incorporated into the earthwork or disposed by the Contractor will be measured by the cubic yard {cubic meter}.
b.Underground Storage Tank Removal . The removal of a tank will b e measured per each tank removed.
c.Removal and Disposal Of Tank Contents . The quantity of tank contents removed and disposed will be measured in gallons {liters} as metered or computed from field measurements. This Pay Item does not include liquids generated during the tank cleaning process.
250.05 Basis of Payment.
a.Unit Price Coverage .
1.Disposal of Hydrocarbon Contaminated Soil. The contract unit price for the disposal of hydrocarbon contaminated soil shall be full compensation for the excavation and handling of the soil, securing the site, hauling, disposal, and for all equipment, tools, labor and incidentals necessary to complete the work. The contract unit price shall also be full compensation for all expenses required for compliance with rules , statutes, laws and regulations that cover the removal and disposal of the contaminated soil. The contract unit price for the disposal of the hydrocarbon contaminated soil shall also be full compensation for incorporating uncontaminated soil into the eart hwork or disposal of uncontaminated soil. The quantity of uncontaminated soil will be reduced by 75 % to allow payment to be made at the same price as the disposal of hydrocarbon contaminated soil. Backfilling of excavated areas will be covered under other items of work.
2.Underground Storage Tank Removal. The contract unit price for the removal of an underground storage tank shall be payment in full for all materials, equipment, tools, labor and incidentals necessary for the removal and disposal of the tank and appurtenances. The contract price shall include cleaning the tank, and all appurtenances.
3.Removal and Disposal of Tank Contents. The contract unit price for the removal and disposal of tank contents shall be full compensation for all equipment , tools, labor and incidentals necessary for removing and disposing the tank contents.
b.Payment will be made under Item No .: 250-B Disposal of Hydrocarbon Contaminated Soil (SPECIALTY ITEM) - per cubic yard {cubic meter} 250-C Underground Storage Tank Removal (SPECIALTY ITEM) - per each 250-N Removing and Disposing Tank Contents ( * ) (SPECIALTY ITEM) - per gallon {liter} * Specify “Gasoline”, “Diesel”, “Sludge”, “Oil”, etc., if required. CEMENT MORTAR FLOWABLE BACKFILL
260.01 Description.
This Section shall cover the work of placing a low strength flowable cement mortar as a backfill at driven piles, drainage structures, utility cuts, and at other locations shown on the plans or directed by the Engineer.
260.02 Materials.
All materials furnished for use shall comply with the appropriate requirements of Division 800, Materials, and the requirements noted hereinafter in this Section . Specific reference is made to the applicable portions of the following Sections: • Section 802 - Fine Aggregates
260.03 Construction Requirements.
• Section 806 - Mineral Admixtures • Section 807 - Water • Section 808 - Air Entraining Additives • Section 815 - Cement Unless approved otherwise by t he Engineer, the following materials shall be used: fine aggregate shall be concrete sand, fly ash shall be either Class "C" or Class "F" ash, and cement shall be Type I for Mixes 1, 2, 3, and 4 and Type II for Mix 5. Cement mortar shall be proportioned i n accordance with the requirements given in Table 2 (Master Proportion Table). Variations to the amounts of the components in a mix may be requested in writing from the Materials and Tests Engineer to achieve a more desirable consistency, workability, or s tability in the mix. Requests to reduce the amount of cement, fly ash, or air entrainment will not be approved. TABLE 2 - MASTER PROPORTION TABLE - ONE CUBIC YARD {CUBIC METER} PROPORTIONS. Mix Designation 1 2 3 4 5 Cement (lbs.) {kg} (minimum) 61 {28} 185 {84} 195 {88} 195 {88} 90 {40} Fly Ash (lbs.) {kg} (minimum) 331 {150} - 572 {259} 572 {259} 1800** {820} Fine Aggregate (lbs.) {kg} 2859 {1300} 2673 {1210} 2673 {1210} 2673 {1210} - Water (lbs.) {kg} 509 {230} 500 {227} 488 {221} 488 {221} 750 {340} Air (oz.) {g} (minimum) - 5.2 {147} - - - Accelerator (oz.) {g} * - - - 45.2 {1280} - * The accelerator dosage will vary from brand to brand. Adjust for desired results. ** Class “F” fly ash with a maximum LOI of 15% and a maximum moisture of 25% Cement mortar shall have the physical properties given in Table 3 (Cement Mortar Physical Property Table). TABLE 3 - CEMENT MORTAR PHYSICAL PROPERTY TABLE Mix Designation 1 2 3 4 5 Compressive Strength 3-day (psi) {kPa} (minimum) 20 {138} 70 {483} 300 {2070} 360 {2480} 15 {105} 7-day (psi) {kPa} (minimum) 30 {207} 130 {896} 500 {3450} 550 {3790} 30 {210} 28-day (psi) {kPa} (minimum) 70 {483} 150 {1030} 900 {6210} 1000 {6890} 50 - 150 {350 – 1030} Penetration Resistance 12-hr. (psi) {kPa} (minimum) - 450 {3100} 500 {3450} 1600 {11,000} - 24-hr. (psi) {kPa} (minimum) 250 {1720} 2500 {17,240} 8500 {58,600} - 100 {700} 48-hr. (psi) {kPa} (minimum) 700 {4830} - - - 240 {1660}
260.03 Construction Requirements.
a.Equipment . The Contractor shall furnish equipment capable of producing mortar meeting the requirements noted in this Section. All equipment must be in good working order and so maintained throughout the
260.05 Basis of Payment.
requirement for its use. Unless authorized otherwise, in writing, by the Engineer, the mixing and transporting equipment shall meet the requirements of Item 501.03(b)2.
b.Preparation of Mortar . During the mixing operation, the sand, fly as h, and cement shall be introduced in that order. The water and any admixtures, shall be added and the mortar allowed to mix for three minutes.
c.Weather Limitation . No mortar shall be placed when the ambient air temperature is below 40 °F {5 °C}, withou t written permission of the Engineer.
d.Placement of Mortar . The mortar may be placed by direct discharge from the transporting vehicle, by pumping, or by any other method approved by the Engineer. The mortar material shall be brought up uniformly to the elevation or fill line shown on the plans or directed by the Engineer. To prevent damage to the low strength mortar, the freshly placed mortar shall not be subjected to load and shall remain undisturbed by construction activities for the following time pe riods unless approved or directed otherwise by the Engineer: Mix 1 - 48 hours; Mix 2 - 16 hours; Mix 3 - 16 hours; Mix 4 - 12 hours; Mix 5 - 48 hours.
260.04 Method of Measurement.
Cement Mortar Flowable Backfill will be measured for payment in cubic y ards {cubic meters} of mortar, of the designated mix, as ordered and approved by the Engineer and acceptably placed.
260.05 Basis of Payment.
a.Unit Price Coverage . Cement mortar flowable backfill will be paid for at the contract unit price for the designated mix. This price shall be full compensation for furnishing of the mortar, including all ingredients, for the mixing, placing, and for all equipment, tools, labor, and incidentals necessary to complete this item of work.
b.Payment will be made u nder Item No .: 260-A Cement Mortar Flowable Backfill, Mix ___ - per cubic yard {cubic meter}
301.01 Des cription.
Division 300
BASES SECTION 301 SOIL, SOIL AGGREGATE, AND AGGREGATE, BASE AND SUBBASES
301.01 Description.
a.General . This section shall cover the work of furnishing all materials and the construction of Soil, Soil Aggregate, and Aggregate, base and subbase courses, complete in place on the roadbed. Typical cross section, thickness, n umber, and material classification of the course will be shown in the plans or proposal.
b.Classification . The base or subbase materials are established by general classifications such as "Selected Material s", "Granular Soils", "Soil Aggregate", "Processed Reef Shell", and "Aggregates", and consist of natural soil, natural soil and natural aggregate combinations, or manufactured (commercial) aggregates, either used separately or blended in any combination wi th or without a stabilizing agent. Additional classification of the material by "Type" according to the required gradation and composition of the material in the completed base or subbase course have been tabulated in Sections 820, Selected Materials For B ases; 821, Granular Soil Materials; 822, Drainage Plane Materials; 823, Soil Aggregate Materials; 824, Processed Reef Shell Base Materials; and 825, Crushed Aggregate Base Materials. The bases and subbases will be further established by the method of mixin g, (Road, Yard, or Plant) as described in Article 301.03. The general classification, type, and method of mixing will be shown in the proposal. Special details will be shown on the plans.
301.02 Materials.
All materials furnished for use shall comply with the requirements of the applicable sections of
Division 800 — , Materials, except as modified by the plans or proposal.
Attention is directed to: • Section 807 Water • Section 815 Cement • Section 817 Lime for Roadbed & Base Stabilization • Section 820 Selected Materials for Bases • Section 821 Granular Soil Materials • Section 822 Drainage Plane Materials • Section 823 Soil Aggregate Materials • Section 824 Processed Reef Shell Base Materials • Section 825 Crushed Aggregate Base Materials Preliminary tests o f optional sources shown on the plans indicate that the materials from these sources will meet plan requirements, either in their natural composition or by blending with additional material. However, whether sources are shown on the plans or not, the Contr actor shall supply whatever components are needed, in whatever proportions are necessary, to meet specified requirements of the plans and specifications for the item complete in place. The processed materials, in addition to complying with the requirements noted above, must be capable of being compacted to the density requirements noted in this Section. Any material furnished, regardless of compliance with all other requirements, which cannot be compacted to the densities specified shall be either removed a nd replaced with more suitable material, or corrected. Testing of material will be as provided in Article 301.05.
Source: Alabama Standard Specifications for Highway Construction, 2022 Edition. Pages 156–158 of 934.