96 SECTION 109
109.01 Measurement of Quantities
A.General. The bid item list specifies the unit of measure for each contract item. The Engineer will measure accepted quantities of work for each contract item in accordance with the “Method of Measurement” subsection in the relevant specifications and Section 109.01, “Measurement of Quantities.” In the case of a conflict, the method of measurement in the relevant specifications supersedes the method of measurement in Section 109.01, “Measurement of Quantities.” Unless the contract spec ifies payment by plan quantity, the Engineer will measure the actual quantity of accepted work for each contract item.
B.Area. For area calculations of contract items, the Engineer will measure the longitudinal length horizontally and use the transverse dimension shown on the plans. The Engineer will not make deductions for individual fixtures occupying an area equal to or less than 9 SF.
C.Structures. For structures, the Engineer will measure structures using the plan quantity based on the dimensions s hown on the plans.
D.Linear Units. For contract items specified for measurement by linear unit, the Engineer will take measurements parallel to the base or foundation.
E.Volume. For volume calculations of contract items, the Engineer will use the avera ge end-area method, the prismoidal method, truck/vehicle method, or other acceptable methods.
F.Truck/Vehicle Volume. For materials specified for measurement by volume, the Engineer will measure in vehicles at the point of delivery. Use vehicles that all ow easy and accurate measurement of the contents. Load all vehicles to their water level capacity if possible. The Engineer may direct the Contractor to level the loads at the point of delivery to determine the actual volume of the load. Do not exceed the legal load limits for gross weight.
G.Timber. The Engineer will measure timber by the thousand board feet measure, based on nominal widths and thicknesses and the longest dimension of each piece.
H.Lump Sum. When a contract item has a “lump sum” unit, the contract unit price is full compensation to the Contractor for that contract item.
I.Standard Manufactured Materials. The Engineer will accept nominal dimensions for standard manufactured materials unless the contract requires otherwise. The Engineer will accept industry established manufacturing tolerances, unless the contract requires otherwise.
J.Material Weight.
1.General. Weigh materials on a certified scale. Provide a scale operator to operate the scale, issue weigh tickets, perform scale verifications, and prepare tare weight reports and daily haul summaries. Do not supply tickets, as specified in Section 109.01 J.6.a “General” , to truck drivers if the weight of the load is in excess of the legal load limits in place on the haul route. Provide scales that are:
a.Certified by a scale service company registered with the North Dakota Public Service Commission. If the certification is more than 9 months old when the scale begins project use, have the scale recertified. Submit a copy of the certification before starting weighing operations.
b.Accurate to within 1.0 percent of the true weight of the applied load throughout the range of use.
2.Scale Applications. Use either computerized or non -computerized scales to determine weights for material when the quantity of the material included in the bid item list is 2,000 tons or less.
a.Computerized Scales. Use a computerized scale to determine the weight of material when the quantity included on the bid item list is greater than 2,000 tons . Use a scale with a digital readout and a computer that produces weigh tickets and daily haul summaries.
b.Computerized Loader Bucket Scales. Loader bucket scales may be used to weigh materials when the quantity of material included in the bid item list is less than 10,000 tons and for aggregates specified under Sections 420 “Bituminous Seal Coat” , 421 “Microsurfacing” , and 422 “Slurry Seal” regardless of quantity. Equip loader bucket scales with an onboard computer that produces weigh tickets. Load trucks on a level loading area and with the loader scale in dynamic mode. Operate the loader scale in accordance with the manufacturer’s guidelines.
3.Types of Scales.
a.Platform Scales. Provide scales with a platform that is large enough to simultaneously weigh all axles of the longest truck, or truck -trailer combination, used for the project. Determine the daily tare weight of each truck before it hauls its first load. Ensure trucks are fully fueled at the time the tare weight is determined. Before the first use of the scale for the project and any time the scale is recertified, perform the: − zero load test; − comparison test; − sensitivity test; and − shift test.
b.Hopper or Batch Scale. Provide hopper and batch scales that use one or more load cells. Before the first use of the scale for the project and any time the scale is recertified, perform the: − zero load test; − comparison test; and − sensitivity test.
c.Computerized Loader Bucket Scale. Before the first use of loader bucket scales for the projec t and any time the scale is recertified, perform the comparison test.
4.Verification Tests. The Engineer will verify the accuracy of scales by observing the Contractor perform the verification tests specified in Section 109.01 J.3 “Types of Scales” . The Engineer may request verification tests to be performed randomly. If the scale is not operating within the required tolerance, have the scale recertified by a scale service company registered with the North Dakota Public Service Commission.
a.Zero Load Test. Adjust the scale so that it balances or reads “zero” when no load is applied to the scale.
b.Comparison Test. If the difference between the weight determined by the scale and the comparison test is more than 1.0 percent, repair and recertify the project scale.
1.Platform Scales. Perform a comparison test using one of the following methods. Notify the Engineer of the method that will be used before starting weighing operations. Obtain the Engineer’s permission if a change in test methods is desired.
a.Independent Scale Method. The Engineer will randomly select a loaded truck that has been weighed on the project scale. The Contractor shall weigh this truck on a certified scale owned and operated by an entity other than the Contractor.
b.Certified Equipment Weight Method. Weigh a piece of equipment on the project scale. Use a piece of equipment that: − is fully fueled; 99 − is free of mud and dirt; and − has a certified weight of a least 60 percent of the maximum load to be applied to the scale during the life of the contract. Provide an affidavit affirming the certified weight of the equipment. Provide a new affidavit when any changes are made to the equipment that will affec t the certified weight. If using the certified equipment weight method, perform a secondary check using the independent scale method for the first two days that the scale is in operation and once per month thereafter.
2.Hopper or Batch Scales. After the material has been weighed on the project scale and placed in a truck, weigh the loaded truck on a certified scale owned and operated by an entity other than the Contractor. Provide the tare weight of the truck along with the comparison weigh tick et.
3.Computerized Loader Bucket Scales. Perform a comparison test using one of the following methods:
a.Independent Scale Method. After placing the load in a truck, weigh the loaded truck on a certified scale owned and operated by an entity other than the Contractor. Provide the tare weight of the truck along with the comparison weigh ticket.
b.Certified Weighted Object Method. Weigh an object on the project scale and compare its certified weight to the loader bucket scale readout. Use an object that: − is free of mud and dirt; and − has a certified weight of at least 60 percent of the capacity of the loader bucket. Weld a plate onto the object showing its certified weight. Provide an affidavit affirming the weight of the object, as measured on a certified scale. Provide a new affidavit when requested by the Engineer or if changes are made to the object that will affect the certified weight.
c.Sensitivity Test. Weigh a representative load and then add 100 pounds of test weights. If the scale is not sensitive to the added weight, repair and recertify the scale.
d.Shift Test. Check the performance of the scale with off-center loading by comparing the results of weighing a truck in the following positions: − Place the rear wheels at the extreme end of the scale platform; 100 − Position the truck with the rear wheels at the extreme opposite end of the platform; and − Position the truck in the center of the platform. Repair and recertify the scale if the results of any two positions differ by more than 0.2 percent.
5.Random Comparison Tests. If a comparison test reveals that the scale is out of tolerance, repair and recertify the scale. At any time, the Engineer may require the scale to be checked for accuracy utilizing any test method.
a.Platform Scales. Perform a comparison test as specified in Section 109.01 J.4.b.(1) “Platform Scales”. Conduct one test for each 5,000 tons of material weighed, except when more than 5,000 tons are weighed in one day. When more than 5,000 tons of material is weighed in one day, conduct one test for that day’s production.
b.Batch and Hopper Scales. Perform a comparison test as specified in Scales”. Conduct one test for each 5,000 tons of material weighed, except when more than 5,000 tons are weighed in one day. When more than 5,000 tons of material is weighed in one day, conduct one test for that day’s production.
c.Computerized Loader B ucket Scales. Perform a comparison test as specified in Loader Bucket Scales”. Perform a comparison test each day that the loader bucket scale is used. Record the results of the test and submit a signed copy to the Engineer. The Engineer may prohibit the use of loader bucket scales if two consecutive tests fail.
6.Documentation.
a.General. Place a unique identification number on each truck that is legible and in plain view of the scale operator. Document the weight of each load on a separate, sequentially numbered weigh ticket that has a maximum size of 5.5 × 8.5 inches. Provide one copy to the driver of the truck. The truck driver shall deliver the weigh ticket to the Engineer at the location where the material is incorporated into the work. The Engineer will reject loads that are not accompanied by a legible weigh ticket.
1.Computerized Scales. Produce computer generated weigh tickets. Produce computer generated daily haul summaries using the same computer, software, and data that produced the 101 individual weigh tickets. Submit paper haul summaries and daily tare weight reports at the beginning of the subsequent work day. Notify the Engineer if the computer or printer malfunctions. If this occurs, non- computerized weighing and recording will be allowed for a maximum of 2 consecutive work days.
2.Computerized Loader Bucket Scales. Generate weigh tickets using the onboard computer and loader bucket scale printer. Produce daily haul summaries by hand or a computer generated spreadsheet.
3.Non-Computerized Scales. The scale operator shall generate weigh tickets when non-computerized scales are used. Produce daily haul summaries by hand or a computer generated spreadsheet.
b.Trucks and Weigh Tickets. Place the following information on each weigh ticket:
1.Ticket Number
2.NDDOT project number or NDDOT Project Control Number (PCN)
3.Delivery date
4.Contractor and Subcontractor if applicable
5.Time of weighing
6.Identification number of truck
7.Material type identified by pay item name
8.Unit of measure
9.Weight delivered: − Gross weight, tare weight and net weight for platform scales − Net Weight for batch, hopper, and loader bucket scales
10.Scale person’s signature for manually produced tickets
c.Daily Haul Summaries. For each material weighed, provide a haul summary containing the following information:
1.NDDOT project number or NDDOT PCN (whichever is used on the weigh tickets)
2.Delivery date
3.Contractor and Subcontractor if applicable
4.Pit location and owner
5.Identification number of truck
6.Each load’s net weight and ticket number, with justification for out of sequence numbers
7.Material type identified by pay item name
8.Total weight of material delivered to the project
9.Weight of material voided for the day
10.Weight of the day’s production
11.A signed statement from the Contractor attesting to the accuracy and completeness of the facts represented. A signed statement from a subcontractor or supplier attesting to the accuracy and completeness of the facts represented is 102 required if they operate the scales. The statement shall consist of the following language: “I certify the Daily Haul Summary is true, accurate, and complete.”
12.Blank for the Engineer’s signature. Include the following language: “I certify the Daily Haul Summary has been reviewed, corrected as necessary, and approved.”
13.Place for comments
7.Basis of Payment. If a comparison test reveals a scale is overweighing, the Engineer will adjust the payment for all material weighed since the last accepted test under Comparison Tests” . The Engineer will calculate the weight of all materials weighed after the last accepted test and reduce the payment for this material by the percentage of scal e error exceeding 1.0 percent. The Department will not compensate the Contractor for losses due to a scale under -weighing material. The Department will pay for materials on the basis of daily haul summaries produced by the Contractor and approved by the E ngineer. If daily haul summaries are not generated using the same computer, software and data that produced the individual weigh tickets, the Department will pay based on individual weigh tickets. Include the cost of operating scales in the contract unit price of the items being weighed.
K.Weight -Volume Conversion. The Contractor may request to weigh material specified to be measured by volume. If the Engineer approves the request, the Engineer will convert the material weight to a volume quantity for payment. Material will be weighed as specified in Weight”. The Contractor may request to have material specified to be measured by weight, measured by volume. If the Engineer approves the request, the Engineer will convert the material volume to weight for payment. The Engineer will determine a material’s conversion factors for weight to volume and for volume to weight based on the materials’ specific gravity or density. Before the Engineer uses the conversion factors, the Engineer and Contractor shall agree in writing to the factors.
L.Bituminous Material.
1.General. The Engineer will measure bitumen by the ton or gallon. The Engineer may convert the weight of bitumen to volume or the volume of bitumen to weight based on conversion factors determined from the specific gravity of the bitumen. If measuring bitumen by volume, the Engineer will adjust the measured volume to the equivalent volume at 60°F, using the tables in ASTM D 4311. The Engineer will measure or verify the quantity of bitumen at the point of delivery. The Engineer will deduct the quantity of bitumen not placed on the road surface from the delivered quantity. The Engineer may weigh any load of bitumen at the point of delivery to the project site.
2.Weighing of Bituminous Material. For bitumen weighed at the source, provide a legible shipment manifest with each sealed tank, signed by a supplier representative. For bitumen transported directly from the source to the project site in a distributor or transport truck and trailer, weigh each vehicle using one of the following methods: − Before and after loading, on scales provided by the supplier or on public scales near the source; or − Before and after unloading, on the Contractor’s scales or on public scales near the project site. Use a scale with current certification from the state agency with the appropriate jurisdiction in the state the scale is located.
3.Acceptance of Material. If the Engineer determines that the bitumen materially affects the quality of the work, to the extent that the contract requires corrective action or removal, the Department will not pay for the bitumen or any affected related items. If both the original and check samples of bitumen fail to meet the same testing requirement of the relevant specific ations and the material remains in the transport vehicles, the Engineer will reject the entire load of bitumen. If both the original and check samples fail to meet the same testing requirement of the relevant specifications and the material is no longer i n the transport vehicle, the Engineer will determine a contract price adjustment as specified in Price Adjustments”. The Department will pay the contract unit price for accepted quantities of bitumen measured, when the Engineer conditionally accepts the material for use and one of the following conditions exists: − The original sample of the bitumen meets all testing requirements of the relevant specifications; or − The original sample of the bitumen does not meet all testing requirements of the relevant specifications, but the check sample meets the testing requirements not met by the original.
4.Contract Price Adjustments.
a.Performance Graded (PG) Asphalts.
1.General. The Department defines price adjustments for PG Asphalt binders using the Multiply Stress Creep Recovery (MSCR) Test under AASHTO M332.
2.Sampling. Obtain one sample of asphalt binder for each 250 tons of binder material supplied to the project. Obtain the sample as prescribed in the NDDOT Field Sampling and Testing Manual, Procedure NDDOT 1. Each 250 tons of material 104 will represent a sublot and 4 sublots will constitute a lot of material. Partial lots will consist of however many sublot samples were collected for that lot.
3.Originals and Check Samples. Each sample consists of two parts, an original and a check. The Engineer will perform tests using the original sample first. If a test returns a value resulting in a pay factor of less than 1.00, the Engi neer will perform that test on the check sample and the check sample results will be used to determine the pay factor for the material.
4.Testing Parameters. The Engineer will randomly select one sublot for testing per lot. If the check sample results in a pay factor of less than 1.00, the Engineer will perform the substandard tests on the remaining sublots within that lot.
b.Non Performance Graded (PG) Asphalts. For bitumen of types other than PG asphalts, if both the original and check samples of bitumen fail to meet the same testing requirement of the relevant specifications, except penetration and demulsibility, and the Engineer determines that the deviation will not materially affect the quality of the work, the Department will reduce payment for the bitumen by 20 percent of the invoice price (FOB refinery) per unit, for the quantity of bitumen represented by the failing samples. If both the original and check samples fail to meet two or more of the same testing requirements of the rel evant specifications, including penetration and demulsibility, and the Engineer determines the deviation will not materially affect the quality of the work, the Engineer will base the price adjustment on the highest unit price reduction.
1.Penetration. If the test results of both the original and check samples of the bitumen fail to meet the penetration testing requirements of the relevant specifications, the Engineer will reduce payment for the bitumen by applying a unit price reduction factor to the invoice price (FOB refinery) of the bitumen. The Engineer will average the variation of penetration percentages of both failing samples and determine the unit price reduction factor in accordance with Table 109-01: Table 109 -01 Unit Price Reduction Factor per Variation of Penetration Variation of Penetration Adjustment Factor 0.1–5 % 5 % >5–10 % 10 % >10–15 % 25 % >15 % 50 % The contract price adjustment will be determined by multiplying the Adjustment Factor by the total tons of bitumen represented by the test and the invoice price 105 for the bitumen. The contract price adjustment will be applied under the appropriate bitumen item.
2.Demulsibility. If the test results of both the original and check samples of the emulsified bitumen fail to meet the demulsibility testing requirements of the relevant specifications, the Engineer will reduce payment for the bitumen by applying a unit price reduction factor to the invoice price (FOB refinery) of the bitumen. The Engineer will average the variation of demulsibility percentages of both failing samples and determine the unit price reduction factor in accordance with the following: Adjustment Factor (%) = Average Variation from Specified Value × 0.67
109.02 Scope of Payment
A.General. The Department will pay the Contractor for accepted quantities of the contract items at the contract unit prices, as required by the contract, except as otherwise specified in Section 104.02, “Contract Revisions.” The Department’s payment to the Contractor for the contract items is full compensation for performing all work as required by the contract, including all risk, loss, damage, or expense arising from the nature or performance of the work, subjec t to Section 105.16, “No Waiver of Legal Rights.” The Department provides either direct or indirect payment for the work, under the contract items shown in the bid item list.
B.Direct Payment. Direct payment is made under a contract item shown in the bid item list when one of the following applies:
1.The work is measured in the “Method of Measurement” subsection of the relevant specification, and the bid item list contains a contract item for the work with the same three-digit number as the section of the specifications ordering the work.
2.The “Method of Measurement” subsection of the specification ordering the work references another section for measuring the work, and the bid item list contains a contract item for the work from the referenced section.
C.Indirect Payment. Work required to safely and satisfactorily provide or complete a contract item in accordance with the “Construction Requirements” subsection and Section 100, “General Provisions,” but which is not directly measured and paid for, or which is not included in the bid item list, is an incidental obligation of the Contractor. The Department does not directly pay for such work and payment is included under the associated contract items in the bid item list. This includes instances when the “Construction Requirements” subsection references another specification for performing the work and does not reference another specification for direct payment of the work. 106 109.03 COMPENSATION FOR CONTRACT REVISIONS
A.General. The Engineer and Contractor shall determine compensation for contract revisions, as provided in Section 104.02, “Contract Revisions,” using the sequence specified in Section 109.03 B, “Contract Unit Price,” Section 109.03 C, “PS -1 Price,” Section 109.03 D, “Negotiated Price,” and Section 109.03 E, “Force Account.” If a contract revision includes a time extension for compensable delays as determined by the Engineer in accordance with Section 108.06, “Determination of and Extensions to the Contract Time,” the Engineer and Contractor will determine compensation for the costs associated with the time extension in accordance with The Department’s payment for a contract revision is full compensation for performing the revised work, including any costs allowed by Section 109.03, “Compensation for Contract Revisions,” and not expres sly precluded by Section 109.03 G, “Non-Allowable Charges.”
B.Contract Unit Price. For contract revisions covered by contract items, the Engineer will determine compensation using the existing contract unit prices. If the contract does not contain the appropriate contract items, the Department will pay the Contractor in accordance with Section 109.03 C , “PS-1 Price”.
C.PS-1 Price. For contract revisions covered by items listed on the Price Schedule for Miscellaneous Items (PS-1), the Engineer will determine compensation using the PS -1 unit prices. If the Contractor uses a subcontractor to exclusively perform the revised work, the Department will pay the Contractor an additional amount for the revised work as a mark -up on the PS -1 unit price in accordance with Section 109.03 E.5, “Subcontracting.” If the contract revision does not include work c overed by items listed on the PS -1, the Engineer will proceed with determining compensation in accordance with Section 109.03 D, “Negotiated Price.”
D.Negotiated Price. The Engineer and Contractor will determine c ompensation based on mutually agreed prices. If the Contractor uses a subcontractor to exclusively perform the revised work, the Department will pay the Contractor an additional amount for the revised work as a mark -up on the negotiated unit price in accordance with Section 109.03 E.5, “Subcontracting.” The Engineer may request that the Contractor provide an estimate of the proposed unit prices or a lump sum price for the contract revision. The Engineer may request that the Contractor justify the estimate by providing one or more of the following:
1.Labor requirements by trade in hours for each task.
2.Equipment costs and time requirements.
3.Material costs. 107 Provide the justification within 5 business days after the Engineer’s request. The Engineer will respond to the estimate within 5 business days after receipt of the Contractor’s justification. The Engineer and the Contractor may mutually agree to extend these time requirements. If the Engineer and Contractor cannot agree on compensation in accordance with Section
109.03 D, “Negotiated Price,” the Engineer will direct the Contractor to track the cost of the
revised work in accordance with Section 109.03 E, “Force Account.”
E.Force Account.
1.General. The Engineer may direct the Contractor to perform the revised work on a force account basis. If the Engineer determines that the Department will pay the Contractor for the revised work on a force account basis, the Department will pay the Contractor in accordance with Section 109.03 E.9, “Payment.” Before beginning or continuing with the revised work, submit a written proposal and schedule for the revised work, including labor, materials, equipment, subcontracting work, and specialty work. The Engineer may direct the Contractor to do any of the following for revised work tracked on a force account basis:
a.Change equipment and labor forces assigned to the revised work;
b.Limit overtime on the revised work to the level previously used by the Contractor on the project for work of a similar nature;
c.Provide overtime for an emergency; and
d.Stop the revised work when adverse conditions limit productivity.
2.Labor. The Department will pay the Contractor the direct labor costs for each hour a laborer or foreman is engaged in the revised work. Direct labor costs include wage rates and health and welfare benefits. Submit copies of certified payrolls to justify the direct labor rates paid to each laborer and foreman. Before beginning the revised work, the Contractor and Engineer shall mutually agree to wage rates using an Equipment Rental and Wage Rates Agreement (SFN 13890) form. The Department will not pay the Contractor for wage rates above those rates in the Equipment Rental and Wage Rates Agreement. The Department will pay the Contractor an additional amount for labor used to perform the revised work as a mark -up on the direct labor costs to cover profit, field and home office overhead, pension fund, fringe benefits, bond, insurance, worker’s compensation, unemployment insurance, social security taxes, and any other labor additives. The mark - up is 70 percent of the direct labor costs for all revised work (5 percent for profit and 65 percent for all other mark -ups). The Department will apply the mark -up only to the direct labor costs, not subsistence and trav el allowance. In addition to the direct labor costs and labor mark -up, the Department will pay the Contractor for the actual cost paid to or on behalf of workers for subsistence and travel 108 allowance. Submit to the Engineer all relevant documentation to justify the subsistence and travel costs.
3.Materials. For all materials accepted by the Engineer and permanently installed into the work, the Department will pay the Contractor at the invoice price paid by the Contractor, including transportation charges. Provide the Engineer with paid invoices for materials used in the revised work, including invoices for transportation cost. If the Contractor does not specifically purchase the material for the revised work but takes the material from the Contractor’s stock, the Contractor shall provide an affidavit certifying the following:
a.That the material was taken from stock;
b.That the quantity of material claimed was used in the work; and
c.That the Contractor paid the amount on the invoice f or the material, including transportation cost. The Department will pay the Contractor an additional amount for material used in the revised work as a mark -up on the invoice cost to cover administrative costs, field and home office overhead, and profit. T he mark -up for material used in the revised work is 15 percent (5 percent for profit and 10 percent for all other mark -ups). For materials used to perform the revised work but not permanently installed into the work, the Department will not pay the Contractor the full purchase price, but will pay the Contractor a reasonable amount determined by the Engineer for the depreciation in value of the material because of its use to perform the revised work.
4.Equipment.
a.General. The Department will pay the Contractor for each hour that the Contractor uses an approved piece of equipment to perform the revised work. The Engineer and Contractor shall mutually agree to the Engineer -determined rates using the Equipment Rental and Wage Rates Agreement. The Department will not pay the Contractor for the use of small tools not listed in the Rental Rate Blue Book published by the Equipment Watch unit of Penton Media, Inc. The Department will pay the Contractor for subcontractor -owned equipment in accordance with Section 109.03 E.4.b, “Owned Equipment,” and for equipment the Contractor has leased, rented, or hired from a subcontractor in accordance with
b.Owned Equipment. The Department will pay the Contractor for owned equipment at 70 percent of the hourly ownership cost determined in accordance with the Rental Rate Blue Book . The hourly ownership cost equals the regionally adjusted monthly ownership cost divided by 176 hours per month. 109 The Department will not pay the Contractor more than the purchase price for an owned piece of equipment. If the owned equipment necessary for the revised work is not available at the project site, the Department will pay the Contractor for the cost of transporting the equipment to the project site (“move-in”) and returning the equipment to its original location (“move -out”) in accordance with the following:
1.Obtain the Engineers approval of the original location of the equipment before transporting the equipment to the project site. If the Contractor chooses to keep the equipment at the project site to perform work other than the revised work, the Department will not pay the Contractor for the “move-out” costs. If the Contractor chooses to return the equipment to a location other than the original location, the Department will pay the Contractor for the “move-out” costs, not to exc eed the “move -in” costs.
2.The Engineer will determine the Contractor’s cost of transporting the equipment to and from the project site based on the hourly rates for labor and equipment determined in accordance with Section 109.03 E.2, “Labor,” and
E.4, “Equipment,” not to exceed the cost of transporting the equipment by an established hauler. If the Contractor uses an established hauler to transport the equipment, the Departm ent will pay the Contractor the invoice price paid to the hauler and 50 percent of the hourly ownership costs determined in accordance with the Rental Rate Blue Book . Transportation costs include loading and unloading.
3.If the Contractor moves the equi pment operator to the project site with the equipment and the operator only performs the revised work, the Department will pay the Contractor for the operator’s labor costs based on the salary paid by the Contractor. Submit to the Engineer proof of the operator’s salary.
c.Leased, Rented, or Hired Equipment. The Department will pay the Contractor for leased, rented, or hired equipment used to perform the revised work at the invoice price, including sales tax, paid by the Contractor. Submit to the Engineer the invoices for the leased, rented, or hired equipment. The Engineer will convert weekly invoice rates to hourly rates by dividing the weekly rate by 40 hours per week, and monthly invoices rates to hourly rates by dividing the monthly rate by 176 hours per month. The Department will not pay the Contractor more than the invoice price for a leased, rented, or hired piece of equipment.
d.Operating Costs. The Department will pay the Contractor for the operating costs of owned and leased, rented, or hired equipment based on the operating costs listed in the Rental Rate Blue Book .
e.Standby Time. The Department will not pay for equipment on standby unless the Engineer directs the standby in writing, or the standby is proven to be as the direct result of the Department’s actions or inactions. If the Engineer directs standby or standby results 110 from the Department’s actions or inactions, the Department will pay for the standby time as follows:
1.For owned equipment, at 50 percent of the hourly ownership costs determined in accordance with the Rental Rate Blue Book , and
2.For leased, rented, or hi red equipment, at 50 percent of the hourly invoice costs determined in accordance with Equipment.” The Department will not pay the Contractor for the operating costs of equipment on standby. If the equipment operates for more than 8 hours on any day or 40 hours in any week, the Department will not pay the Contractor for standby time for that day or week. If the equipment operates for less than 8 hours on any normal work day or less than 40 hours in any normal work week, the Department will only pay the Contractor for standby time based on the difference between the operating time on a normal work day and 8 hours per day or the difference between the operating time in a normal work week and 40 hours per week. The Department will not pay the Contractor for standby time on any day that is not normally a work day.
5.Subcontracting. Obtain the Engineer’s written approval to use a subcontractor to perform the revised work. The Department will pay the Contractor for revised work performed by a subcontractor as determined by the Engineer in accordance with Section 109.03 E.2, “Labor,” Section
109.03 E.3, “M aterial s,” Section 109.03 E.4, “Equipment,” and Section 109.03 E.6,
“Specialty Work.” Submit itemized daily records for the approved revised work performed by a subcontractor in accor dance with Section 109.03 E.7, “Daily Records.” The Department will pay the Contractor an additional amount for approved revised work performed by a subcontractor, as a mark -up on the Engineer -determined costs to cover administrative costs, and field and home office overhead. The mark -up for revised work performed by a subcontractor is 10 percent of the first $15,000 plus 5 percent of any amount over $15,000. The Department will not pay an additional mark -up for revised work performed by a subcontractor under contract to a subcontractor.
6.Specialty Work. Obtain the Engineer’s written approval to use a specialty subcontractor to perform revised work covered by specialty items. The Department will pay the Contra ctor for revised work covered by specialty items at the invoice price paid by the Contractor. Submit invoices for the approved specialty work. The Department may adjust the invoice price to match the current market price for the specialty work. The Department will pay the Contractor an additional amount for approved specialty work as a mark -up on the invoiced price to cover administrative costs and field and home office overhead. The mark -up for specialty work is 10 percent of the first $5,000 plus 3 percent of any amount over $5,000.
7.Daily Records. Compare and reconcile the records of labor, materials, and equipment used in the performance of the revised work at the end of each day or shift with the Engineer on a Statement of Daily Force Account Work (SFN 14462) .
8.Statements. Submit itemized statements for each week reflecting all costs for the revised work, detailed as follows:
a.Name, classification, date, daily hours, total hours, wage rate, health and welfare benefits, and extension for each laborer and foreman.
b.Quantities of materials, prices, extensions, and transportation costs paid by the Contractor. Include invoices for the material, including any transportation charges. Adjust the statements, if applicable, to show any discounts offered by the supplier.
c.Designation, dates, daily hours, total hours, rental rate, and extension for each unit of equipment. For rented equipment, include invoices and rental agreements.
d.For re vised work performed by a subcontractor, the same information required in items a, b, and c, above.
e.Invoices for revised work performed by a specialty subcontractor.
9.Payment. After receipt of statements and invoices, the Engineer will prepare a sum mary statement of the force account work and provide to the Contractor for verification and approval. The Department will pay for revised work within 30 calendar days after receiving all the required information and Contractor -approved summary statements.
F.Delay Costs.
1.General. For a compensable delay as identified in Section 108.06 B.5, “Excusable, Compensable Delays” , the Department will pay for the costs incurred by the Contractor because of the delay as specified in Section 109.03 F, “Delay Costs”. The Department will not pay for delay costs before the Contractor submits an itemized statement of those costs. The Engineer will verify the statements before authorizing payment. The Department will not compensate the Contractor for delays caused by work that the Department has paid the Contractor for as specified elsewhere in “Compensation for Contract Revisions”.
2.Extended Field Office Overhead. The Department will pay the Contractor for extended field office overhead costs as follows: 112 a. For general field supervision, including supervisors, assistants, watchpersons, clerks, and other field support staff, calculate the labor costs as specified in Section 109.03
E.2, “Labor”.
b.For field office facilities and supplies, which include field office trailers, tool trailers, office equipment rental, temporary toilets , and other incidental facilities and supplies, calculate the costs as follows:
1.For field office trailers, tool trailers, and other rented or owned equipment at a daily rate equal to 8 hours per day at the hourly rate determined in accordance with Apply the daily rate to the number of days that each trailer or equipment is at the project site longer because of the delay.
2.For office equipment rental, temporary toilets, and other inc idental facilities and supplies, at a daily rate determined by dividing the monthly rental costs by the number of calendar days in each month. Apply the daily rate to the number of days that each facility or supply is at the project site longer because of the delay.
c.For maintenance of field operations costs, which include telephone, electric, water, and other similar costs, calculate a daily rate for these costs by dividing the monthly charges for these services by the number of calendar days each month. Apply the daily rate to the number of days of delay.
3.Idle or Extended Labor. Calculate these labor costs during delays as specified in Section 109.03 E.2, “Labor”, for all non-salaried personnel remaining on the project as approved by the Engineer.
4.Escalated Labor. To receive payment for escalated labor, demonstrate that the delay forced performance of the work into a period when higher labor costs than the Contractor would have experienced absent the delay. Provide adequate supporting documentation for labor costs, allowances, and benefits.
5.Standby Equipment or Equipment Demobilization. The Department will pay the Contractor the standby equipment rate determ ined in for equipment, other than small tools, required to remain at the project site during the delay. The Department will pay the Contractor’s transportation costs to remove and return equipment not required to remain at the project site during the delay.
6.Materials Escalation or Material Storage. The Department will pay the Contractor for increased material costs or material storage costs due to the delay. Obtain the Engineer’s approval before storing material due to a delay.
G.Non-Allowable Charges. For payments for contract revisions based on contract unit price, PS -1 price, negotiated price, or force account, the Department will not reimburse the Contractor for the following:
1.Home office overhead or profit in excess of that specified in Account”;
2.Profit mark -ups, as defined in Section 109.03 E, “Force Account”, on costs resulting from Engineer -ordered suspensions in accordance with Section 104.02 D, “Suspension of Work Ordered by the Engineer”;
3.Changes in carrier rates or in the costs of any other transportation facilities used in the performance of the work during the project;
4.Loss of anticipated profit;
5.Damages, including special, incidental, consequential, or other damages associated with loss of bonding capacity, loss of bidding opportunities, and insolvency, e ven if the Contractor notifies the Department of the likelihood of such damages;
6.Indirect costs;
7.Attorney fees, claims preparation expenses, or costs of litigation;
8.Interest; and
9.Any other cost not specifically allowed by the contract.
109.04 Progressive Payment
A.General. The Department’s authorization to pay the Contractor in accordance with Section 109.04, “Progressive Payment” , does not constitute the Department’s final acceptance of any portion of the work or relieve the Contractor of its responsibility to complete the work as required by the contract. If the Contractor fails to comply with any contract requirement, the Department may withhold progressive payments. If the Department w ithholds progressive payments, the Department will only make the progressive payments after the Contractor is in full compliance with the contract. The North Dakota Century Code requires retainage to be withheld on all estimates except the Final Progressive Estimate.
B.Intermediate Progressive Estimate and Payment. The Department will make progressive payments to the Contractor at least once each month as the work progresses. The Engineer will prepare a progressive estimate of the value of the work completed by the Contractor, including materials in accordance with “Payment for Materials on Hand”. For each progressive estimate, the Engineer will calculate and retain payment for 2 percent of the estimated total work done to date. Retainage will be capped at 2 percent of the Original Contract Amount or the total work done to date, whichever is less.
C.Semifinal Estimate and Payment. 114 When the Engineer determines that the Contractor has completed more than 90 percent of the work and the Contractor has met the all of the following conditions, the Engineer may prepare a semifinal estimate:
1.Filed with the Department all pit releases, receipts of payment, and haul road releases;
2.Submitted to the Engineer all up-to -date payrolls;
3.Proven capable of completing the remaining work without being assessed liquidated damages in accordance with Section 108.07 B, “Failure to Complete within Contract Time” ; and
4.Is working diligently to complete the remaining work. For the semifinal estimate, the Engineer will calculate and retain payment for an amount not less than 1 and not more than 2 percent of the estimated total work done to date. Retainage will be capped at 2 percent of the Original Contract Amount or the total work done to date, whichever is less. When the Engineer determines that the Contractor has completed 100 percent of the original work not including contract revisions, and the Contractor has met all of the conditions listed above in items 1 through 4, the Engineer may prepare additional semifi nal estimates.
D.Prompt Payment. Within 20 calendar days of receiving payment from the Department, pay subcontractors their portion of the payment less applicable retainage, not to exceed 2 percent. If the Contractor does not make prompt payment, the subcontractor may notify the Engineer. The Contractor may withhold payment to a subcontractor for just cause. If withholding payment from a subcontractor, immediately provide written notification to the subcontractor and the Engineer with the reasons for withholding the payment. If the Engineer determines the Contractor is withholding payment with just cause, interest will not accrue. If the Engineer determines the Contractor is withholding payment without just cause, beginning on the 21 st calendar day after the Contractor’s receipt of payment from the Department interest will accrue for the subcontractor at the rate provided by NDCC 13-01.1-02. Additionally, the Department may withhold all payments to the Contractor until the Contractor properly pays the subcontractor and agrees to make all future payments to subcontractors as required by the contract. The Department will apply these prompt payment procedures to all tiers of subcontracts, in accordance with 49 CFR 26.29.
E.Subcontractor Retainage. Pay t he withheld retainage to a subcontractor within 20 calendar days after the satisfactory completion of the subcontractor’s work. The Engineer will determine satisfactory completion of the subcontractor’s work. The Department considers satisfactory completion of subcontractor work as the accomplishment of all of the tasks included in the subcontract, documented in accordance with the contract, and paid by the Department. 115 Obtain from the subcontractor and submit to the Engineer any of the following final documentation that is applicable to the subcontractor’s completed work:
1.Certified payrolls;
2.Materials certification;
3.Haul road releases;
4.Pit receipts of payment;
5.Pit releases;
6.Night watchperson reports;
7.Warrantees;
8.Operating manuals;
9.Product literature;
10.Verification of final quantities;
11.DBE Participation Certification (SFN 14268) ;
12.For non-bonded subcontractors, proof of payment for all material bills and wages (only submit copies of these documents upon the Engineer’s request); and
13.Any other documents required by the contract for the subcontractor’s work. For retainage not released by the Contractor in accordance with this provision, interest will accrue at the rate provided by NDCC 13-01.1-02 beginning the 21 st calendar day after satisfactory completion of the subcontractor’s work. The requirement to release retainage applies to all tiers of subcontracts.
F.No Circumvention. On federal -aid contracts, do not include any provision in subcontracts that would circumvent 49 CFR Part 26.29.
109.05 Payment for Material On Hand
The Department may make partial payment for material on hand that meets all of the followin g conditions:
A.Is intended to be permanently incorporated into the work;
B.Is delivered to or stockpiled at the project site, or other storage facility approved by the Engineer;
C.Has a value over $5,000; 116 D. Is not living or perishable; and
E.Is not an individual item used to fabricate items off the project site, except for structural steel before fabrication of bridge girders. Stockpile structural steel at the production plant or fabrication site and store the steel separate from steel for us e in other work to qualify for payment as material on hand. Request payment by submitting a written request to the Engineer with the following information:
A.A statement certifying that the material on hand complies with the contract and will comply at the time of placement;
B.For material not produced or manufactured by the Contractor, a delivery invoice itemizing the material on hand; and
C.For material produced or manufactured by the Contractor, a fully documented statement of production costs, including the type of material, amount of material stockpiled, location of the stockpile, and an itemized breakdown of the cost to produce the material. The Department will limit payment for material on hand to a portion of the contract unit price as determined by the Engineer. The Department will not pay more than the plan quantity of the contract item that covers payment for the material on hand. As the Contractor incorporates the material on hand into the work, the Department will deduct the amount paid for the material on hand from the payment. For material not produced or manufactured by the Contractor, within 35 calendar days after the date the Department released payment for the material on hand, the Contractor shall submit to the Engineer paid invoices for the material on hand covered by the payment. With each paid invoice, include a signed statement from the supplier or fabricator acknowledging receipt of payment. If the Contractor fails to submit paid invoices, the Department will deduct the amount paid the Contractor for the material on hand from future payments and will not pay for the material on hand until the Contractor incorporates it into the work. The Department’s payment to the Contractor in accordance with Material on Hand” , is not the Department’s final acceptance of the material or any portion of the work. None of the following Department actions relieve the Contractor of the responsibility for all materials and work and any damage to the material or work:
A.Payment for material on hand;
B.Acceptance of quantities of material on hand; or
C.Approval of the storage methods or locations. For lost, stolen, or damaged material, the Department will deduct the amount paid for the material on hand from future payments. The Department owns material paid for as material on hand, but the risk of loss remains with the Contractor. For material on hand paid by the Department and later determined unacceptable, the Department may deduct the value of the unacceptable material from future payments.
109.06 Final Progressive Estimate and Payment
Upon completion of the records reconciliation process discussed in Section 105.15 C, “P roject Acceptance”, the Engineer will calculate the total amount payable to the Contractor including the amount of the unreleased retainage and will deduct all previous payments and amounts owed to the Department in accordance with the contract. The Engine er will then issue a final progressive estimate and final payment voucher to the Contractor. The Department may correct previous estimates and payments as necessary in the final estimate and payment. After the Contractor returns the signed final payment voucher, the Department will pay the balance. Before making any partial or final payment, the Department may require the Contractor to provide proof of compliance with all laws that directly or indirectly apply to the work. Section 151 118 SECTION 151 ROLLERS
151.01 Pneumatic -Tired Rollers
A.General. Use rollers having at least seven wheels with pneumatic tires of equal size and ply. Arrange wheels to provide complete coverage of the area the roller travels. Do not use petroleum products to moisten the tires . Submit the data used to determine the contact pressures for the full range of the manufacturer’s recommended wheel loads and tire inflation pressures. Inflate tires so that all tires are within a single 5 psi range. Use rollers that can be loaded to a gross weight of at least 225 pounds per inch of compaction width. Provide the empty and ballasted weights using one of the following methods : − Weigh the roller if it has been modified from its original design or if the ballast weight is unknown; or − Use the manufacturer ’s weight ratings if the roller has not been modified and ballast weight is known.
B.Tow-Type Pneumatic-Tired Roller . Operate rollers with tire inflation pressures and wheel loads as specified by manufacturer.
C.Self-Propelled Pneumatic-Tired Roller. Equip rollers with: − positive and accurate steering control; − skirting large enough to retain heat on the tires; − smooth-tread tires; − close -fitting scrapers for each tire; and − a system for uniformly moistening each tire without excessive use of water and detergent. Start, stop, and reverse direction smoothly without jerking or backlash. Wobble wheel rollers are not allowed. Operate rollers with contact pressure between 40 and 90 psi. Contact pressure is the average ground pressure, expressed in psi, obtained when the wheel load in pounds is divided by the gross contact area in square inches of the tire.
Source: North Dakota Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 131–152 of 550.