defofbiditems natic cg.doc

SECTION 01025

Definition of bid items and

MEASUREMENT AND PAYMENT

PART 1 - GENERAL

1.1 summary

A. The intent of this section is to explain, in general; what is and what is not included in a bid item; the limits or cut-off points where one bid item ends and another begins; and method of measurements and basis of payment for work items listed in the Bid Item Schedule.

B. Work:

1. Furnishing all labor, materials, equipment, and other incidentals necessary to successfully complete the project or any portion of it, and carrying out all duties and obligations imposed by the contract on the Contractor.

C. Payment:

1. For each individual item listed here and in the Schedule of Items, payment shall be full compensation for all work related to the particular item in accordance with these specifications, as shown on the drawings, and as staked in the field.

2. Measurement and payment for contract work shall be made only for and under those pay items included in the Schedule of Items. All other work and materials shall be considered incidental or as included in the payment for items shown.

1.2 DETERMINATION OF QUANTITIES

A. The contractor shall perform, or cause to be performed, all measurement of quantities of materials incorporated into the work processes that are to be measured under the provisions of the contract.

B. Quantity Measurements:

1. The Contractor shall make all measurements for computation of quantities for all work items except those specified for payment by Designed Quantity (DQ) or Lump Sum Quantity (LSQ).

2. The contractor shall compute the quantities for periodic progress payments; the Contracting Officer shall compute the quantities for the final payment based on measurements taken by the Contractor.

3. All Contractor measurements are subject to verification.

4. The Contractor shall submit all field notes, calculation sheets, and other data used to determine quantities.

5. The Contractor shall certify in writing as to the accuracy of the measurements and computations submitted.

C. The following measurements and calculations are used to determine contract quantities.

1. For individual construction items, longitudinal and lateral measurements for area computations shall be made horizontally or corrected to horizontal measurement unless otherwise specified. Measurements for geotextiles, netting and erosion control blankets shall be along slope lines.

2. The average end area method shall be used to compute volumes of excavation or embankment. However, if in the judgment of the Contracting Officer (CO), the average end area method is impractical, measurement shall be made by volume in hauling vehicles or by other three dimensional methods.

3. Structures shall be measured according to neat lines shown on the drawings or as altered by the CO, in writing, to fit field conditions.

4. For items that are measured by the linear foot, such as pipe culverts, fencing, guardrail, and underdrains, measurements shall be made parallel to the base or foundation upon which the structures are placed. Pipes shall be measured along center of invert.

5. For aggregates weighed for payment, the tonnage shall not be adjusted for moisture content, unless otherwise provided for.

6. For standard manufactured items--such as fence, wire, plates, rolled shapes, pipe conduits--identified by gauge, weight, section dimensions, and so forth, such identifications shall be considered the nominal weights or dimensions. Unless controlled by tolerances in cited specifications, manufacturer's tolerances shall be accepted.

1.3 UNITS OF MEASUREMENT

A. Payment shall be by units defined and determined according to U.S. Standard measure and by the following:

B. Cubic Yard: A measurement computed by one of the following methods:

1. Excavation, Embankment, or Borrow. The measurement computed by the average end area method from measurements made longitudinally along a centerline or reference line.

2. Material in Place or Stockpile. The measurement computed using the dimensions of the in-place material.

3. Material in the Delivery Vehicle. The measurement computed using measurements of material in the hauling vehicles at the point of delivery. Vehicles shall be loaded to at least their water level capacity. Leveling of the loads may be required when vehicles arrive at the delivery point.

C. Each: One complete unit, which may consist of one or more parts.

D. Linear Foot: Linear feet measured horizontally.

1.4 deFINItion of bid items

A. Definition of Bid Item No. 1

1. Description: Mobilization. All preparatory work and operations necessary for the movement of personnel, equipment, supplies, and incidentals to the project site; all quality control testing; all construction signing; any other work and operations that must be incurred prior to the beginning of work; and demobilization at the completion of work.

a. Measurement and payment: Payment will be made at the contract lump sum price.

b. Progress payments shall be made as follows:

1) When 5 percent or more of the original contract amount is earned from other pay items, 50 percent of the amount of this pay item or 2.5 percent of the original contract amount will be paid, whichever is less.

2) When 10 percent or more of the original contract amount is earned from other pay items, 100 percent of the amount of this pay item or 5 percent of the original contract amount will be paid, whichever is less.

3) Upon completion of all work on the project any unpaid amount for this item will be paid.

4) The total of all payments, including bonding, shall not exceed the original contract amount for this item.

2. Measurements and Payment: LSQ

B. Definition Bid Item No. 2

1. Description: Composite Road Construction. Work includes clearing, grubbing, and disposal; road prism construction including all intersections, curve widening, and drainage features. Also included is seeding of all disturbed areas.

2. Measurements and Payment: Mile, Design Quantity.

C. Definition of Bid Item No. 3

1. Description: Rock Crossing Aggregate. Work includes construction of trench and installation of rock crossing aggregate as shown on the drawings.

2. Measurements and Payment: Tons, Actual Quantity

D. Definition of Bid Item No. 4

1. Description: Erosion Control Blanket. Install erosion control blanket on major disturbed areas excluding the road bed.

2. Measurements and Payment: Square Foot, Actual Quantity E. Definition of Bid Item No. 5

1. Description: Erosion Control Blanket Over Mulch. Install mulch and erosion control blanket on the cut and fill slopes that exceed 6 feet slope distance.

2. Measurements and Payment: Square Foot, Actual Quantity F. Definition of Optional Bid Item No. 10

1. Description: Gravel for Road. Supply and install gravel surfacing, 4” compacted depth, as shown on the drawings. Bid Item 10 and 10A will not both be included in the contract award.

2. Measurements and Payment: Tons, Actual Quantity G. Definition of Optional Bid Item No. 10A

1. Description: Aggregate for Road. Supply and install crushed aggregate surfacing, 4” compacted depth, as shown on the drawings. Bid Item 10 and 10A will not both be included in the contract award.

2. Measurements and Payment: Tons, Actual Quantity H. Definition of Optional Bid Item No. 11

1. Description: Campsite Turnout Construction. Work includes clearing, grubbing, and disposal; and turnout prism construction. Also included is seeding of all disturbed areas except turnout surface.

2. Measurements and Payment: Each, Actual Quantity

I. Definition of Optional Bid Item No. 12

1. Description: Gravel for Campsite Turnouts. Supply and install gravel surfacing, 4” compacted depth, as shown on the drawings. Bid Item 12 and 12A will not both be included in the contract award.

2. Measurements and Payment: Tons, Actual Quantity J. Definition of Optional Bid Item No.12A

1. Description: Aggregate for Campsite Turnouts. Supply and install crushed aggregate surfacing, 4” compacted depth, as shown on the drawings. Bid Item 12 and 12A will not both be included in the contract award.

2. Measurements and Payment: Tons, Actual Quantity

K. Definition of Optional Bid Item No.13

1. Description: Compaction Water. Haul water from Forest Service source and apply to road and turnout subgrades and to aggregate surfacing as determined by the CO to aid in compaction.

2. Measurements and Payment: Mgal (1000 gallons), Actual Quantity

L. Definition of Optional Bid Item No.14

1. Description: Lengthen Natick Road Turnouts. Lengthen existing Natick Road Turnouts as shown on the plan and as staked by the CO.

2. Measurements and Payment: Each, Actual Quantity

PART 2 - METHOD OF MEASUREMENT

1.5 GENERAL

A. One of the following methods of measurement for determining final payment is designated on the Schedule of Items for each pay item:

B. DESIGNED QUANTITIES (DQ)

1. These quantities denote the final number or units to be paid for under the terms of the contract. They are based upon the original design data available prior to advertising the project. Original design data include the preliminary survey information, design assumptions, calculations, drawings, and the presentation in the contract. Changes in the number of units shown in the Schedule of Items may be authorized under any of the following conditions:

a. As a result of changes in the work authorized by the CO.

b. As a result of the CO determining that errors exist in the original design that cause a pay item quantity to change by 15 percent or more.

c. As a result of the Contractor submitting to the CO a written request showing evidence of errors in the original design that cause a pay item quantity to change by 15 percent or more. The evidence must be verifiable and consist of calculations, drawings, or other data that show how the designed quantity is believed to be in error.

C. ACTUAL QUANTITIES (AQ)

1. These estimated quantities which are determined from actual measurements of completed work.

D. LUMP SUM QUANTITIES (LSQ)

1. These quantities denote one complete unit of work as required by or described in the contract, including necessary materials, equipment, and labor to complete the job. They shall not be measured.

PART 3 - EARTHWORK TOLERANCES (NOT USED)

END OF SECTION 01025

01025-1

DEFINITION OF BID ITEMS &

MEASUREMENT AND PAYMENT