This item specifies the requirements for the addition and mixing of lime with subgrade materials and compacting the mixed subgrade material.
(Ordinance 2007-106, App. B, adopted 3/20/07)
Unless otherwise indicated on the Bid Form, the measurement and payment for the work specified in this Section shall be as follows:
Lime stabilization of subgrade shall be measured and paid for by square yard of surface area to the lines shown on the plans and to the depth and at the percentage of lime (by dry solids weight) specified. The unit price bid per square yard shall include full compensation for supplying the lime, for all mixing, shaping, compacting, and for all incidentals necessary to complete the work.
(Ordinance 2007-106, App. B, adopted 3/20/07)
The applicable provisions of the following standards shall apply as if written here in their entirety:
AASHTO American Association of State Highway and Transportation Officials
TxDOT Texas Department of Transportation - Standard Specifications for Construction of Highways, Streets and Bridges
(Ordinance 2007-106, App. B, adopted 3/20/07)
Contractor shall provide a completed course of treated subgrade material containing a consistent lime mixture, having no loose or segregated areas, of uniform density and moisture, well compacted to its full depth, and having a smooth surface adequate for placing additional subbase, base or surface courses. The Contractor shall be responsible for regulating the sequence of the work, for processing a sufficient quantity of material to provide a full depth stabilized subgrade as shown on the plans, using the appropriate amount of lime, maintaining the work, and performing any reworking of the courses if necessary to meet the requirements.
(Ordinance 2007-106, App. B, adopted 3/20/07)
Weight certificates from certified public scale for lime delivered in trucks.
(Ordinance 2007-106, App. B, adopted 3/20/07)
A. 
Hydrated lime shall be stored and handled in closed, waterproof containers until immediately before distribution. Hydrated lime bags must be stored in waterproof buildings and protected against ground dampness. If storage bins are used, they must be completely enclosed.
B. 
If lime is delivered in bags, then each bag must have the manufacturer’s certified weight. Bags that vary more than five percent (5%) from the Manufacturer’s weight can be rejected. The average weight of the bags in any shipment, as calculated by weighing fifty (50) bags at random, shall not be less than the manufacturer’s certified weight.
C. 
If lime is furnished in trucks, each truck shall have the certified weight from a certified public scale or the Contractor must supply a set of standard platform truck scales or hopper scales at a location approved by the City of Magnolia, Engineer or the designated representative of the Engineer. The scales shall meet the criteria of TxDOT Item 520.
(Ordinance 2007-106, App. B, adopted 3/20/07)
Mixing of the lime-treated subgrade shall not be performed when the atmospheric temperature is forty (40) degrees Fahrenheit and falling, or when the weather indicates that within the next twenty-four (24) hours the weather will fall below forty (40) degrees Fahrenheit. Mixing shall also not occur when it is foggy or raining, or when the soil or subgrade is frozen.
(Ordinance 2007-106, App. B, adopted 3/20/07)