Attachment 01 SOW Materials Missouri River RM52.8.pdf
PDF 1 MB Posted
- Solicitation number
- W912DQ26QA053
About this file
This is a Solicitation for Construction Material for Type 1 Rock Purchase near Missouri River at River Mile 52.8.
The contractor must deliver 7,500 tons of Type 1 rock to a contractor-run loading facility at river mile 52.8, where the rock will be loaded onto Government-owned barges at a delivery rate of 1,000 tons per day. The stone must be broken, durable, and approved by the Contracting Officer, resistant to disintegration from air and water exposure. Quarry operations must employ selective quarrying, handling, processing, and blending techniques to produce stone conforming to specified size ranges and quality standards. Blasting operations must be precisely controlled using appropriate hole diameter, depth, angle, burden spacing, explosive types and distribution, and delay sequences to prevent product damage. The maximum weight of any individual stone piece is limited to 3,000 pounds. Stone gradation must be reasonably well-graded with no more than 5 percent by weight finer than ½-inch screen, meeting Type 1 specifications: 80-100 percent at 3,000 lbs, 60-90 percent at 1,000 lbs, 30-70 percent at 500 lbs, 0-50 percent at 100 lbs, 0-35 percent at 50 lbs, and 0-5 percent at 1 lb. Temporary storage of stone materials requires Contracting Officer approval, and underwater storage is prohibited. Payment measurement may be made by public scales (with weights reduced to the nearest 20th of a ton and trucks tared at least twice daily) or by barge displacement (measured to the nearest 0.01 foot at fore, aft, port, and starboard positions and converted to the nearest 100th of a ton).
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Text version
Type 1 Rock Purchase Near
Missouri River, 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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