603ENGINEER'S FIELD OFFICE

ENGINEER'S FIELD OFFICE 472

keys turned over to the Engineer. A closet or locker with means for locking shall be provided for storage of survey equipment. One fire extinguisher (minimum size 10# {4.5 kg} CO 2) shall be provided for each 19 m² of floor space. The size and configuration of the working space within each office and work room of the field office shall be such as to provide room for working and movement of personnel that is acceptable to the Engineer. Ceiling height shall not be less than 7 feet {2.13 m}. Each office shall be furnished with an acceptable set of steps for each outside door. A 6 foot by 6 foot {2 m x 2m} deck shall be provided at the top of each set of steps. Such steps and decks shall be safe, sturdy, and suitable for the intended purpose. They shall be constructed from 2 inch {50 mm} (nominal size) thick lumber treated with a timber preservative in accordance with Section 833. All restrooms shall be vented to the outside through the use of power ventilators. Entrance doors to restrooms shall be equipped with door locks.

Unless shown otherwise on the plans, office furnishings shall be supplied with the field offices in accordance with the following schedule: Minimum Furniture Per Office 1 desk, 3 chairs Per Work Room 1 plan table, 1 worktable (drafting), 2 stools, 3 chairs, 1 water cooler dispenser, 1 4-drawer file cabinet, 20 feet {3 m} of book shelving, 1 plan storage rack, appropriate fire extinguishers Furniture shall be new, sturdy, and acceptable to the Engineer. Water cooler dispensers shall be UL listed, shall have a rated capacity of 8.0 gallons {3 L}, minimum, per hour of 50 °F {10 °C} water, and shall be connected to the office plumbing facilities. Any special requirement office furnishings shall be as shown on the plans.

When required, a security fence shall be installed around the office. Such security fence shall be a chain link fence, meeting the requirements of Section 871, minimum 8 feet {2.4 m} high, with a 14 foot {4 m} wide, minimum, lockable gate. See Subarticle 603.01(c) for additional requirements.

Unless shown otherwise on the plans, the Contractor will not be required to remove the field office, its appurtenances, and security fence upon completion of the project.

A site for the location of the field office will be arranged for by the Engineer.

The field office (a mobile office or trailer) along with various appurtenances (i.e., steps, decks, electric service pole, wiring from pole to office, plumbing, existing security fence, etc.) shall be moved from its present location (shown on the plans) to the location designated by the Engineer. The mobile office or trailer shall be installed with required new tie down straps and connected to utilities.

If existing decks are not included with the field office to be relocated, a 6 foot by 6 foot {2 m x 2 m} minimum size deck shall be provided at the top of each set of steps by the Contractor. The decks shall be safe, sturdy, and suitable for the intended purpose constructed from 2 inch {50 mm} (nominal size) thick lumber treated with a timber preservative in accordance with Section 833.

If an existing security fence is included with the field office to be relocated, the Contractor shall remove and reinstall the fence. The cost for the existing fence relocation and its removal (if required upon completion of the project) shall be included as part of Item 603-D. When Item 603-B is included on the plans or in the contract. the Contractor shall install a new security fence around the office. Such new security fence shall be a chain link fence, meeting the ENGINEER'S FIELD OFFICE 473

requirements of Section 871, minimum 8 feet {2.4 m} high, with a 14 feet {4 m} wide, minimum lockable gate.

Unless shown otherwise on the plans, the Contractor will not be required to remove the field office, its appurtenances, and relocated security fence upon completion of the project.

603.03Utilities and Services

The field office shall be provided with adequate lighting, heating, sanitary, and drinking water facilities. All installation and monthly maintenance charges for the utilities, except for the monthly telephone billing, shall be paid for by the Contractor. The Department will order service for and coordinate installation of the telephones and pay the monthly telephone billing. Unless more stringent local or State regulations specify otherwise, sanitary facilities shall include a septic tank, min. 750 gallon {2839 L}, and adequate field lines where connection to a sanitary sewer system is unavailable. All utility installations shall be in accordance with applicable local or State codes, ordinances, rules, and regulations. The field office and its facilities shall be maintained in a satisfactory state of repair until released by the Engineer.

The field office shall be provided with adequate lighting, heating, sanitary, drinking water, and telephone facilities. All installation charges for the utilities shall be paid for by the Contractor. The Department will pay all utility usage bills. Unless more stringent local or State regulations specify otherwise, sanitary facilities shall include a septic tank, min. 750 gallon {2839 L}, and adequate field lines where connection to a sanitary sewer system is unavailable. All utility installations shall be in accordance with applicable local or State codes, ordinances, rules, and regulations. All electrical wiring shall be in accordance with applicable local or State codes, ordinances, rules, and regulations. The field office and its facilities shall be maintained in a satisfactory state of repair throughout the life of the project.

The State furnished field office will be provided with adequate electrical, sanitary, and telephone facilities. All installation charges for the utilities shall be paid for by the Contractor. The Department will pay all utility usage bills. Unless more stringent local or State regulations specify otherwise, sanitary facilities shall include furnishing and installation of a septic tank, min. 750 gallon {2839 L}, and adequate field lines where connection to a sanitary sewer system is unavailable. All utility installations shall be in accordance with applicable local or State codes, ordinances, rules, and regulations.

603.04Method of Measurement

Measurement of Field Offices will be in units of the type specified by the plans, ordered and accepted. Measurement of the security fence will be in linear feet {meters}, to the nearest foot 0.1 foot {0.1 m}, of fence, including the gate, ordered and accepted.

603.05Basis of Payment

The ordered and accepted Field Offices, measured as noted above, will be paid for at the contract unit price bid for the type Field Office specified, which shall be full compensation for the furnishing of the office and its related facilities, security, and services for exclusive use of the Engineer throughout the life of the contract, all as noted in this Section and the satisfactory disposal thereof after the offices are released. GEOTEXTILES IN PERMEABLE ASPHALT TREATED BASE APPLICATION 474

No additional compensation will be allowed for furnishing field office units larger than the type specified in the contract. Partial payments for the field offices will be made on monthly estimates in accordance with the following schedule:  75% of the unit price bid upon satisfactory installation and acceptance of the facility.  15% of the unit price bid when 1/2 of the anticipated construction time has expired.  10% of the unit price bid when the semi-final or final estimate is paid.

The ordered and accepted security fence, measured as noted above, will be paid for at the contract unit price bid for the security fence which shall be full compensation for the furnishing and installing the fence and gate and for the maintenance of such throughout the life of the contract. The security fence, shall become the property of the Department upon completion of the project. When required on the plans, this item shall also be full compensation for removal and delivery of the fence and gates to a plan designated location.

The ordered and accepted Field Office (State Retained), measured as noted above, will be paid for at the contract unit price bid for the type Field Office specified, which shall be full compensation for the furnishing of the office, its furnishings, related facilities, appurtenances, and installations for the exclusive use of the Engineer and for the maintenance of such throughout the life of the contract. The office, along with all furnishings, facilities, and appurtenances, shall become the property of the Department upon completion of the project. When required on the plans, this item shall also be full compensation for removal and delivery of the field office and appurtenances (including security fence) to a plan designated location. No additional compensation will be allowed for furnishing field office units larger than the type specified in the contract. Partial payments for the field offices will be made on monthly estimates in accordance with the following schedule:  75% of the unit price bid upon satisfactory installation and acceptance of the facility.  15% of the unit price bid when 1/2 of the anticipated construction time has expired.  10% of the unit price bid when the semi-final or final estimate is paid.

The ordered and accepted State Furnished Field Office, measured as noted above, will be paid for at the contract unit price bid for the relocation of the Field Office specified, which shall be full compensation for the breakdown, moving, and installation of the Office, its furnishings, related facilities, and appurtenances (including existing security fence when shown on the plans). When required on the plans, this item shall also be full compensation for removal and delivery of the field office and appurtenances (including relocated security fence) to a plan designated location.

603-A Furnishing Type ___ Field Office - per each 603-B Furnishing Security Fence - per linear foot {meter} 603-C Furnishing Type ___ Field Office (State Retained) - per each 603-D State Furnished Field Office - per each GEOTEXTILES IN PERMEABLE ASPHALT TREATED BASE APPLICATION

604.01Description

This Section shall cover the furnishing and placing of geotextiles for use as a means to prevent clogging of the permeable base layer due to the migration of fine material from the underlying roadway layer. The geotextile shall be designed to allow passage of water while retaining untreated base or subbase course soils without clogging. PAVEMENT AND SPECIAL UNDERDRAIN 475

604.02Materials

The geotextile used in this work shall be one constructed of non-woven synthetic fibers meeting the requirements of AASHTO M 288 for Separation Geotextile Class 3 and Section 810 of these specifications with the exception that geotextiles manufactured with polyamide will not be allowed. The geotextile filter shall be resistant to the heat and temperature range expected during placement of the Permeable Asphalt Treated Base. The geotextile shall be selected from List II-3, of the Department's manual titled "Materials, Sources, and Devices With Special Acceptance Requirements". Information concerning this list is given in Subarticle 106.01(f) and ALDOT-355.

604.03Construction Requirements

The surface area on which the geotextile fabric is to be placed shall be free of loose aggregate, foreign debris, and all sharp objects during placement of the fabric.

The geotextile filter shall be installed immediately prior to placement of the permeable asphalt treated base layer and extended full width between the inside and outside edge drains according to the manufacturer's specifications and as shown on the plans or in the proposal. Exposure of geotextile filter to the elements between lay down and cover shall not exceed three days. Adjacent geotextile rolls, seamed or unseamed, shall be overlapped in the direction of placement of the Permeable Asphalt Treated Base a minimum of 2 feet {600 mm} at all longitudinal and transverse filter fabric joints. The geotextile shall be held in place prior to Permeable Asphalt Treated Base placement by pins, staples, or other means as approved by the Engineer.

Both factory and field sewn or sealed seams, if applicable, shall conform to the strength requirements of Table 1 as outlined in AASHTO M 288 for separation applications. All seams shall be subject to the approval of the Engineer.

Damaged geotextiles, as identified by the Engineer, shall be repaired immediately. Any geotextile filter which is ripped or torn during the construction process shall be replaced or repaired with a patch which extends 3 feet {1 m} beyond the perimeter of the tear or damage.

604.04Method of Measurement

The geotextile will be measured by the square yard {square meter} computed from the width (from pavement edge drain to pavement edge drain) and the length as shown on the plans, or established in writing by the Engineer. This excludes seam overlaps.

604.05Basis of Payment

The accepted quantities of geotextiles will be paid for at the contract unit price per square yard {square meter} in place.

604-A Separative Geotextile - per square yard {square meter} PAVEMENT AND SPECIAL UNDERDRAIN

605.01Description

This Section shall cover the work of constructing pavement and special underdrain. Pavement underdrain shall be drain lines in the median and at the edges of pavement, and shall include collection pipes, and outlets. Edge drains and median drains shall be aggregate filled underdrains. The details of the special underdrain will be shown on the plans. Shoulder drainage plane layers shall be constructed in accordance with the requirements given in Geotextile filter fabric shall be placed to reduce the movement of soil into the drains. Pipes shall be installed to collect and provide outlets for the drainage.