508STRUCTURAL STEEL AND MISCELLANEOUS METALS

358

The bearing plates furnished will be measured in sets complete in place. A set shall include all the bearing plates required for each structure. Steel plates used in the bronze plate assembly or any other steel plates used in the PTFE plate assembly will be measured as Item 508-A, 508-B or 508-D, whichever is applicable.

Inspection ladders, when specified for separate payment, shall consist of all ladders required in accordance with plan details for the locations designated measured as one unit. When no separate payment is designated, the cost of such shall be included in the unit price bid for the Item of Structural Steel provided in the contract.

When separate payment is designated for a bridge deck drainage system, the complete system required to drain each separate structure in accordance with plan details will be measured as one unit per bridge structure. When no separate payment is designated for a bridge deck drainage system, the cost of such will be considered incidental to the work and absorbed in the unit prices bid for other items of work.

508.05Basis of Payment

The accepted theoretical poundage {mass} of metal in the per pound {kilogram} price items, computed as prescribed, will be paid for at the contract unit price bid for structural steel complete in place, which will be payment in full for fabricating, furnishing, transporting, erecting, and painting (field painting not included in Item No. 508-D) all material, and for all labor, equipment, tools, falsework, cleaning up and incidentals necessary to complete the work. Unless noted otherwise on the plans, these items shall include the following:  bridge joint armor plates (both sides of the joint)  pile cap channels and plates  connection angles (clip angles) used with prestressed concrete girders  swedged anchor bolts, nuts and washers  smooth and swedged dowels  pipe sleeves

Accepted metal superstructure span units will be paid for at the contract unit price bid for each respective unit, complete in place, which shall be payment in full for furnishing, fabricating, transporting, erecting and painting all materials and for all labor, equipment, tools, falsework, cleaning up and incidentals necessary to complete the work. Unless noted otherwise on the plans, this item shall include the following:  All structural steel in the superstructure unit  Structural steel in the bearing devices, except the PTFE coated bearing plates  Expansion dams (finger joints , etc.) for interior and exterior open bridge joints Where separate pay items are not provided, this item shall also include furnishing, fabrication, painting or galvanization, transporting and installing ladders, platforms, catwalks, and navigational lighting brackets. Joint armor plates, channels, angles, anchor bolts, etc. for sealed interior and exterior bridge joint design shall be as specified in Section 522 and are not as a part of this item. This item does not include reinforcing steel and concrete. Structural steel bearing plates for Type 3, 4 and 5 elastomeric bearings shall be included in the payment for elastomeric bearings under Pay Item 511-A and are not a part of this item.

Payment for bearing plates furnished, complete and installed as shown on the plans, will be made at the contract unit price per set which shall be compensation in full for furnishing and installation and for all tools, labor and incidentals necessary to complete the item.

Accepted ladders, measured as noted above, will be paid for at the contract lump sum price bid for this item. Said lump sum price bid shall be full compensation for all ladders designated complete in place and including all cost for furnishing, fabricating, painting, galvanizing, erection and installing the ladders, and for all materials, tools, equipment, labor and incidentals necessary to complete the work. STRUCTURAL STEEL AND MISCELLANEOUS METALS 359

Accepted bridge deck drain systems, measured as noted above, will be paid for at the contract lump sum price bid for each system, complete in place. Said lump sum price bid shall be payment in full for furnishing and installing of all materials, fabrication of materials, erection of materials, paint (if required) and for all tools, equipment, labor and incidentals necessary to complete the work.

Partial payment may be made for steel plates and shapes prior to fabrication. The requirements given in Article 109.07 shall be applicable to these partial payments except as amended or supplemented by the following:

include the number of pounds {kilograms} of steel for which payment is requested and the dollar amounts and percentages of partial payment for each contract pay item affected by the request;

order numbers, and inventory markings for all plates and shapes;

fabrication will be considered prior to fabrication;

before further consideration will be given to making partial payment;

inventory prior to the beginning of fabrication and shall be clearly marked with an inventory identification;

plate and shape;

the ALDOT Bridge Bureau's Structural Steel Inspection personnel;

Partial payment will be allowed after the completion of fabrication in accordance with the requirements given in Article 109.07.

After the structural steel is installed, all connections are complete, all splice plates and bolts have been cleaned and painted, and the entire shop coating has been acceptably applied and cured, 95 % of the payment may be made for the structural steel.

After the completion of installation, the acceptable application and curing of the field coating, and the cleaning of the superstructure, 100 % of the payment may be made. If weathering steel is installed and painting is not required, 100 % of the payment may be made after the superstructure concrete is placed and the superstructure has been cleaned.

508-A Structural Steel - per pound {kilogram} 508-B Structural Steel Superstructure, * , ** , *** (SPECIALTY ITEM) - per each 508-C Bearing Plates **** - per set 508-D Structural Steel (Except Field Painting) - per pound {kilogram} 508-E Furnishing, Fabrication & Installation of Ladders - per lump sum 508-F Bridge Deck Drainage System - per lump sum * Length of Continuous/Simple Span ** Lane, if applicable *** Approximate weight {mass} of structural steel **** If a specific type of bearing plate is required, so designate (Bronze or PTFE) Example: 508-B Structural Steel Superstructure, 100'-100'-100' Continuous Span, Left Lane, Approx. 373,100 pounds (SPECIALTY ITEM)

TIMBER 360

TIMBER

509.01Description

This Section shall cover the work of furnishing, preparing, and erection of timber or lumber of the stress values, grade, size, and dimensions designated by the plans or proposal. The timber may be treated or untreated as specified by the plans and may require painting if so specified. It shall also include all structural steel, iron, casting, other metal parts, and all hardware required by the Specifications and plans. The type of preservative used shall be the type called for in the plans and/or proposal form. Where more than one type of preservative is included in the contract, each type shall be used as indicated by the plans.

509.02Materials

All materials shall conform to the appropriate provisions of Division 800, Materials. Specific reference is made to Section 833, Lumber and Timber, Untreated and Treated

509.03Construction Requirements

Timber and lumber shall be carefully handled without dropping, breaking of outer fibers, bruising, or penetrating the outer surface with tools. Tongs, cant hooks, peavys, hooks, pike poles, or other equipment likely to break the surface shall not be used.

Only competent carpenters shall be employed and all framing shall be true and exact. Nails and spikes shall be driven with just sufficient force to set the heads flush with the surface of the wood. Deep hammer marks in wood surfaces shall be considered evidence of poor workmanship and sufficient cause for the removal of workmen causing them. Any metal work required in conjunction with timber construction shall conform to the requirements of Section 508.

Holes for round drift bolts and dowels shall be bored with a bit 1/16 inch {1.6 mm} less in diameter than the bolt or dowel to be used. The diameter of holes for square drift bolts or dowels shall be equal to the least dimension of the bolt or dowel. Holes for machine bolts shall be bored with a bit of the same diameter as the bolt. Holes for rods shall be bored with a bit 1/16 inch {1.6 mm} greater in diameter than the rod. Holes for lag screws shall be bored with a bit 1/16 inch {1.6 mm} less in diameter than the nominal diameter and for a depth not greater than 1/2 the length of the lag screws being used. Countersinking shall be done wherever smooth faces are required. Recesses formed for countersinking shall be painted with hot creosote oil, and after the bolt or screw is in place, shall be filled with an asphalt base roofing patch.

One washer of the size and type specified shall be used under all bolt heads and nuts which would otherwise come in contact with wood. Cast iron washers shall have a thickness equal to the diameter of the bolt, and a diameter of four times the thickness. For malleable or plate washers, the diameter or side size of the square shall be equal to four times the diameter of the bolt, and the thickness of the washers shall be equal to one-half the diameter of the bolt. Cast iron washers shall be used when the timber is in contact with the earth . All bolts shall be checked after the nuts have been finally tightened. Bolts shall be of such length that not more than 1 inch {25 mm} will protrude beyond the nut when finally tightened.

Additional requirements for timber construction will be listed under the type work for which the timber is used, including but not limited to Sections 503, 505, 510, 630, 631, 635, 636, and 637.

509.04Method of Measurement

The quantity to be measured shall be the number of thousand feet board measure {cubic meters} of lumber and timber, complete in place and accepted. Measurements of lumber and timber will be computed using the nominal width and thickness, and the actual length of each piece shown on the plans, unless changes in such dimensions have been authorized in writing. The nominal size dimensions shall be used in the computations even though the actual size be scant in the amount provided above. The