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Section 3: Quantities

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Overview

The Quantities for each item of work are provided for in the DCIS estimate, the Quantity Summary Sheets, and the Estimate and Quantity Sheets in the plans. All bid items are included in the E&Q sheets.

Occasionally, it may be desirable to specify work that is not to be paid for directly. Work handled in this manner should be insignificant in the scope of the overall project. These are items which are referred to as subsidiary or incidental. Their use should be minimal. When subsidiary or incidental items of work are specified, it is necessary that the work be explained in sufficient detail, possibly even including referencing specifications, and a quantity should be shown in the plans but marked with the following statement:

“This item will not be paid for directly but shall be considered subsidiary to Item ____. The quantity is shown here for contractors’ information only.”

This is necessary in order for contractors to be able to accurately account for this work in their bids. The next subsections discuss these Quantities topics:

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Bid Quantity Tolerances (Degree of Accuracy)

Table 4-6 shows the greatest degree of accuracy that should be shown in the estimate for the various items. Quantities should be shown on the ENGINEER’S ESTIMATE to no greater accuracy than is given below.

Anchor: #i1011770Table 4-6: Bid Quantity Tolerances

ITEM

SHOW TO NEAREST

 

ENGLISH

METRIC

Earthwork Items (including Structural Excavation & Backfill)

0.01

0.01

1

1

1

STA

AC

CY

SY

YH

0.001

0.01

1

1

1

KM

HA

M3

M2

M3H

Watering and Sprinkling

0.1

MG

0.01

KL

Blading, Rolling & Traffic Control

1

HR

1

HR

Base and Base Treatment Items

0.01

1

1

1

STA

CY

SY

TON

0.001

1

1

1

KM

M3

M2

MGR

Asphalts, Oils and Emulsions

1

0.01

GAL

TON

1

0.01

L

MGR

Asphaltic Pavements & Surface Treatment Aggregates/Materials

1

1

1

TON

CY

SY

1

1

1

MGR

M3

M2

Concrete Pavement Items

(also to include Riprap & Structure Approach Slabs)

1

1

CY

SY

1

1

M3

M2

Cleaning, Sealing Joints, Sealed Expansion Joints Preformed Joint Sealers

1

0.01

1

1

LF

LM

LB

GAL

0.1

0.01

1

1

M

LKM

KG

L

Planning, Texturing, Fabric Underseal & Surface Rehab

1

SY

1

M2

Trench Excavation

1

LF

0.1

M

Pilings & Drilled Shafts

1

LF

0.1

M

Structural Concrete

(including Structural Repairs, Concrete Overlay of Structure Decks, Pre-cast Concrete Pipe, Pipe, Culverts & Drains)

0.1

0.1

1

1

CY

SY

SF

LF

0.1

0.1

---

0.1

M3

M2

---

M

Retaining Wall

1

SF

0.1

M2

Reinforced Concrete Slabs & Traffic Signs

1

SF

0.1

M2

Pre-stressed Concrete Beams

0.01

LF

0.001

M

Structural Steel (including Armor Joint & Sign Support)

(nearest 10 lb or 100 lb if 1% accuracy is maintained)

1

LB

1

KG

Bridge Railing (including Removal)

0.1

LF

0.01

M

Jacking, Boring or Tunneling

1

LF

0.1

M

Timber Structures

1

MFB

0.01

M3

Detours

0.1

1

STA

SY

0.01

1

KM

M2

Traffic Barrier & Pavement Markings

1

LF

0.1

M

Curb, Gutter, C&G, Sidewalks, Walkways, Driveways, Medians & Islands

1

1

LF

SY

1

1

M

M2

Fencing, MBGF, Underdrains, Conduit, Conductors, Cable & Detectors

1

LF

1

M

Mobilization*

1.00 LS

* All Items measured by the Month, Each or Lump Sum should be in whole units. If mobilization is broken out into several CSJs for any one contract, the resulting quantities should be carried to the hundredth place.



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Participating/Non-participating Items and Accounts

The next subsections cover:

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Participating/Non-participating Bid Items

On Federal-Aid projects, it is often necessary to distinguish the items that are not eligible for federal funds. Historically, examples of items for which the FHWA will not provide reimbursement are replacement concrete, traffic barrier hardware, and maintenance activities such as cleaning of culverts.

Bid items that are non-participatory in federal funds must be grouped together in their own category of work and indicated as such in the category of work heading, e.g., CTB Hardware (Non-Part).

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Participating/Non-participating Special Accounts

Similarly, special accounts (see the subsection below) which are not direct bid items but which are used to account for certain project costs (such as railroad flagging, state-furnished traffic signal controllers, off duty patrolman, etc.) may or may not be federally participating.

Those special accounts that are not federally participating must be distinguished from those that are by including (Non-Part) or (Part) as part of heading.

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Special Accounts

The next subsections deal with these aspects of special accounts:

  • Description of special accounts
  • Special account classification
  • Force account work
  • State-furnished material
  • Special account codes
  • Special account customizing
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Description of Special Accounts

Special accounts are accounts that are set up to cover costs of various items of work or the supply of materials that are not provided for in the estimate as ordinary bid items. Other special accounts may cover the participation in the contract by other entities for work not funded by TxDOT. Some examples of special accounts are State Force Account Work, Material Furnished by the State, Railroad Force Account, and Contractor Force Account. The project estimate must include the special account number, a brief description of the item of work, and an estimated cost. The unit of a special account is usually lump sum, and the price should be determined by consulting with maintenance personnel, from past experience, or the best available information and method depending on the item of the account.

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Special Account Classification

Special accounts are classified as either Participating or Non-participating on federally funded projects. Participating (Part) refers to special accounts that the FHWA will participate in the cost of the work and Non-Participating (Non-Part) refers to accounts for which the FHWA will not participate in the cost of the work.

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Force Account Work

Force account work in general is either additional work over and above the work described by the standard bid items or work that will be done by work forces other than the contractor. This work may be ordered, performed, and accepted on a Force Account basis. Force Accounts are a type of special account. The next three paragraphs discuss:

  • State Force Account Work
  • Railroad Force Account Work
  • Contractor Force Account Work.

State force account work. State Force Account Work is work that is to be done by state maintenance forces on the project, such as striping and the removal of temporary sediment control fence. The inclusion of these types of accounts allows the district to charge the costs of the work items to the project and not to their maintenance budget.

Railroad force account work. Railroad Force Account Work is work that will be done by a railroad company during the construction of a project. This includes items such as signal relocation, planking work, and flagging at railroad crossings that will be done by railroad personnel.

Contractor force account work. Contractor Force Account Work is potential work that might be done by the contractor and which has not been estimated and included as a bid item but might be required on the project. An example is temporary erosion, sediment and water pollution control on a project such as an asphaltic concrete pavement overlay.

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State-Furnished Material

Material furnished by the state is another type of special account that covers materials used on the project but furnished by the state. An example of materials furnished by the state are traffic signal controllers and traffic paint. Materials furnished by the state usually include those materials that are difficult to obtain on the open market, small quantities and expensive, or what the state prefers to use and have in stock.

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Special Account Codes

Most projects will require some work to be done by state maintenance forces or other agencies. Therefore, special accounts should be established so the state maintenance forces or other agencies can properly account for their work and charge to the project. Special accounts are identified in the project estimate by special account code numbers, and Table 4-7 is a list of some special accounts and their item number.

Anchor: #i1011936Table 4-7: Special Accounts

Code Number

Special Accounts

01

State Force Account Work (Non-part)

02

Railroad Force Account Work

06

Material Furnished By State

08

Contractor Force Account Work

11

State Force Account Work (Part)

12

Railroad Force Account Work (Part)

16

Material Furnished By State (Part)

18

Contractor Force Account Work (Part)

22

Contractor Force Account Or Agreed Unit Price

26

Contractor Force Account Or Agreed Unit Price (Part)

27

State Force Account Work

28

Stockpile Account Number

29

Participation by City of

30

Participation by County of



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Special Account Customizing

All of these special accounts can be customized for descriptions which vary slightly. In order to customize any of the special account code numbers, first identify which special account most closely fits the need. Then add 50 to the code number.

EXAMPLE: For participation by the city, the code number is 29. Add 50 to this number: 29 + 50 = 79. So the code number to enter on the DCIS estimate (P4 screen) is 79. Then use a card type 3 on the estimate to describe the city (or insert any description needed). For additional information refer to the DCIS User Manual.

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