Attachment 01 SOW Materials RM52.8.pdf
PDF 1 MB Posted
- Solicitation number
- W912DQ26QA053
About this file
This is a Solicitation for Construction Material for the purchase of Type 1 Rock near River Mile 52.8.
The contractor must deliver 7,500 tons of Type 1 rock to a contractor-operated loading facility at river mile 52.8 at a delivery rate of 1,000 tons per day. The rock will be loaded onto Government-owned barges for transport. The stone must be broken, durable stone approved by the Contracting Officer that will not materially disintegrate under air and water exposure. Quarry operations must employ selective quarrying, handling, processing, blending, and loading techniques to produce stone conforming to specified size ranges and quality requirements. Blasting operations must be specifically controlled to prevent end-product damage, utilizing proper hole diameter, depth, angle, burden, spacing distances, explosive types and distribution, and delay intervals. Temporary storage of stone materials is permitted only with Contracting Officer approval; underwater storage is prohibited.
Type 1 stone must be reasonably well graded and free from overburden, spoil, shale, and unsuitable material, with dirt and fines less than ½-inch not exceeding 5 percent by weight and maximum piece weight limited to 3,000 pounds. The gradation requirements specify: 3,000 lbs at 80-100% passing, 1,000 lbs at 60-90%, 500 lbs at 30-70%, 100 lbs at 0-50%, 50 lbs at 0-35%, and 1 lb at 0-5%. Measurement for payment may be conducted via public scales (weighed to nearest 200 pounds and reduced to nearest 20th of a ton, with trucks tared at least twice daily) or barge displacement (measured at fore and aft, port and starboard to nearest 0.01 foot). The Contractor bears all weighing costs and must furnish the Government inspector legible copies of weigh bills with each delivery.
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Text version
Type 1 Rock Purchase Near RM 52.8
Solicitation for Construction Material
CONTRACT MATERIAL, QUANTITIES AND DELIVERY
Delivery shall be made to contractor run loading facility and nearest river mile 52.8. Delivered rock shall be loaded onto Government owned barges:
Type 1 Rock = 7,500 tons
Delivery Rate: 1,000 tons per day
GENERAL
Stone shall be broken, durable stone, approved by the Contracting Officer, that will not materially disintegrate under action of air and water.
QUARRY OPERATIONS
Conduct quarry operations in a manner to produce stone conforming to the specified requirements, this shall involve selective quarrying, handling, processing, blending, and loading as necessary. Control blasting and handling of stone to produce stone of the size ranges and quality specified.
Techniques such as the use of proper hole diameter, hole depth, hole angle, burden and spacing distances, types and distribution of explosives, delay intervals and sequence, removal of muck piles between each shot, and special handling techniques are required as necessary to produce the specified materials. All aspects of blasting operations shall be specifically designed so that the end product is not damaged from the blasting technique and that the stone is suitable for the intended purpose.
Temporary storage of stone materials subsequent to shipment from the quarry and prior to permanent placement in the required work shall be subject to approval of the Contracting Officer. Underwater storage of stone materials is prohibited.
GRADATION
Stone shall be reasonably well graded, free from overburden, spoil, shale, and unsuitable material. The quantity of dirt and fines less than ½-inch maximum cross section, accumulated from interledge layers, blasting, handling operations, and/or all other sources, shall not exceed 5 percent by weight.
For Type 1 stone fill, the maximum weight of any piece of stone shall be limited to 3,000.
Quarry operations shall be controlled to produce well graded stone between the maximum and minimum limits indicated below for Type 1 stone. The Contracting Officer may require changes in quarry operation as necessary to produce the required product.
The stone shall be reasonably well graded between the following limit for Type 1 stone:
Type Stone Weight, LBS
Perce nt Passi ng
FOR REFERENCE
ONLY
Size in Approx.
Spherical Diameter (in)
Type 1 3000 80-100% 39 1000 60-90% 27 500 30-70% 22 100 0-50% 13 50 0-35% 10 1 0-5% 3
Type 2 3000 70-100% 39 2000 60-90% 34 500 30-70% 22 100 0-50% 13 50 0-35% 10 1 0-5% 3
Not more than 5 percent by weight finer than ½ inch screen. A plot of the gradation curve for Type 1 stone is attached at the end of this section.
MEASUREMENTS
Materials shall be measured at such times and places as approved by the Contracting Officer.
Stone shall be measured for payment by one of the following methods at the option of the Contractor, and weights or computations converted to short tons.
Public Scales
Stone delivered at the site of the work can be weighed on public scales or privately owned scales generally used by the public which have been certified by the State in which the scales are located, and which have been approved by the Contracting Officer.
If public scales are not available, the Contractor can furnish approved scales, subject to certification acceptable to the Contracting Officer, with the weighing service to be supplied by an independent professional organization approved by the Contracting Officer.
The Contractor shall furnish the Government inspector a legible copy of each weigh bill, when self-printing scales are used, or a legible copy of the weigh bill signed by the weighmaster as each load is delivered to the jobsite. All cost for weighing the stone on a public or quasi-public scale shall be borne by the Contractor.
Trucks shall be weighed to the nearest 200 pounds and the accumulative net weight reduced to the nearest 20th of a ton. Trucks shall be tared at least twice a day.
Barge Displacement
Stone delivered to the site of the work can be measured for payment by barge displacement. Barge displacement shall be measured at the fore and aft, port and starboard side of each barge by the Government to the nearest 0.01 foot. Barge displacement shall be measured to the nearest 100th of a foot and the net weight computed to the nearest 100th of a ton. Barges shall be measured before and after each loading.
Type 1 Gradation No more than 5% by weight finer than 1/2” screen
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