522BRIDGE JOINT SEALS

396

BRIDGE JOINT SEALS

522.01Description

This Section shall cover the work of furnishing and installing bridge joint seals at the locations shown by the plans or directed, all in accordance with this specification and plan details. Said seals are for the purpose of preventing the passage of water and other materials through the joint. Types of bridge joint seals have been classified as follows: Compression Seals and Diaphragm Type Seals.

522.02Materials

Materials furnished for use under this Section shall conform to the appropriate requirements of

Bridge joint seals for existing bridges shall be the type of seal material shown on the plans.

522.03Construction Requirements

The sealing of bridge joints shall be limited to those joints noted by the plans to be sealed. The plans and proposal will designate the "total joint movement" for which a joint is to function. Shop drawings of the bridge joint seal system designated by the plans or, if allowed, selected by the Contractor from the plan designated alternates, must be approved by the Bridge Engineer. Shop drawings, etc. of the seal system shall be submitted to the Bridge Engineer for approval. After final approval of the drawings, the Contractor shall resubmit seven copies of the drawings plus one set of satisfactory reproducibles (Mylar or equal) for distribution.

Special attention shall be given to joint construction to ensure that proper allowances for temperature, skew, etc. are made in forming the joint width. In the same manner, the anchorage system (bolts, plates, etc.) or joint armor shall be carefully set in the formwork to ensure proper anchorage and functionability of the completed joint. All elements of the joint seal system shall be on hand before commencing forming of the joint.

It shall be the Contractor's responsibility to ensure that the joint width, alignment, etc. is in accordance with the bridge plan details and approved shop drawing. Any deviation from the plans and approved shop drawings shall be reported and corrective remedial action taken before installing the seal element. Installation of the seal element shall be in accordance with the manufacturer's recommendation and Departmental directives. Care shall be taken to ensure the proper cleaning of the joint and use of lubricants, adhesives, or combination lubricant-adhesive during the installation. Splicing of the seal elements will not be permitted in a joint system unless so noted by plan details or the approved shop drawings.

The Bridge Contractor shall install that portion of the bridge end joint anchorage system required to be installed in the bridge deck in accordance with bridge plan details and approved shop drawings. The remaining elements shall be match-marked and properly stored as directed until such time as the bridge end slab is constructed or the contract is terminated, at which time the stored elements shall be turned over to the Engineer. The Contractor constructing the bridge end slab shall have the responsibility of incorporating that portion of the joint seal system required by the bridge plans and approved shop drawings into the bridge end slab. It shall be the Contractor's responsibility to ensure that the joint width, alignment, etc. is in accordance with above noted requirements; any deviation shall be reported and corrective remedial action taken before installing the seal element. The portion of the joint seal system to be installed in the bridge end slab and the seal element will be made available to the bridge end slab Contractor along with installation details if such is not provided by the plan details. The Contractor shall have full responsibility for protection, etc. of elements of the joint seal system furnished him until the joint seal system is accepted. Any damage to the elements caused by his operations shall be corrected as directed BRIDGE JOINT SEALS 397

without additional compensation. Installation of the seal element shall be as noted in the second paragraph of Subarticle 522.03(c).

The Contractor shall obtain the manufacturer’s recommendations for the installation of the joint seals and shall furnish these recommendations to the Engineer prior to the installation of the seals. The seals shall be installed as directed by the Engineer.

522.04Method of Measurement

Ordered and accepted sealed joints will be measured in linear feet {meters} along the top surface of the designated joint between the bridge gutters to the nearest 0.1 foot {millimeter}. No measurement will be made for that portion of the seal required by plan details to extend through or above the gutter line; such being considered incidental to the sealing of the joint.

These items, when provided, will be measured as a lump sum unit for the designated bridge structure. Said measurement will cover the sealing of all the bridge joints of the type designated, interior or end, all in accordance with the plan requirements and the details noted in this Section.

The joint seal will be measured in linear feet {meters} along the top of the installed and accepted seal.

522.05Basis of Payment

The accepted sealed bridge joints, measured as noted above, will be paid for at the contract unit price bid for each designated joint width, which shall be full compensation for the fabrication and furnishing of all materials necessary to provide a complete functional sealed joint (armor plates, anchor bolts, extrusions, channels, seal elements, etc.), for the incorporation and installation of all elements into the structure, and for all equipment, tools, labor, and incidentals necessary to provide a complete operational sealed joint.

The accepted bridge end joint seal system, measured as noted above, will be paid for at the contract unit price bid for each designated joint width, which shall be full compensation for the fabrication and furnishing of all materials necessary to provide a complete, functional sealed joint (armor plate, anchor bolts, extrusions, channels, seal element, etc., except the lubricant-adhesive used to install the seal element), for the partial installation of that portion of the seal system required to be installed in the bridge decks, and for all equipment, tools, labor, and incidentals necessary to complete this item of work.

The accepted partial installation of the bridge end joint seal system, measured in the same manner as noted for a complete sealed system, will be paid for at the contract unit price bid which shall be full compensation for incorporation of that portion of the bridge end joint seal system required to be installed into the bridge end slab and the installation of the seal element (all components of the seal system, except the lubricant-adhesive used to install the seal element), for the lubricant-adhesive, and for all equipment, tools, labor, and incidentals necessary to provide a completely operational joint system.

The accepted sealed bridge, measured as noted, will be paid for at the contract lump sum price bid which shall be full compensation for the fabrication and furnishing of all materials necessary to provide completely functional joint seal systems (armor plates, anchor bolts, extrusions, channels, seal elements, etc.) for the structure, for the incorporation and installation of all elements into the structure, and for all equipment, tools, labor, and incidentals necessary to provide the structure with complete, functional joints.

The accepted bridge end joint seal systems, measured as noted above, will be paid for at the contract lump sum price bid which shall be full compensation for the fabrication and furnishing of REINFORCED CONCRETE BOX CULVERTS 398

all materials necessary to provide the completely functional bridge end joints systems (armor plates, anchor bolts, extrusions, channels, seal elements, etc., except the lubricant adhesive used to install the seal element) for the structure, for the partial installation of the seal systems (that portion of the seal systems required to be installed in the bridge decks), and for all equipment, tools, labor, and incidentals necessary to complete this item of work.

The accepted bridge joint seal, measured as noted above, will be paid for at the contract price bid per linear foot which shall be full compensation materials, equipment, tools, labor and incidentals necessary to furnish and install the seals.

522-A Furnishing and Installing Bridge (Interior or End) Joint Seal System ___ inch {mm} Total Joint Movement - per linear foot {meter} 522-B Furnishing and Partial Installation of Bridge End Joint Seal System ___ inch {mm} Total Joint Movement - per linear foot {meter} 522-C Partial Installation of Bridge End Joint Seal System - per linear foot {meter} 522-D Furnishing and Installing Bridge (Interior or End) Joint Seal Systems, Station ______ - per lump sum 522-E Furnishing and Partial Installation of Bridge End Joint Seal Systems, Station ______ - per lump sum 522-G Bridge Joint Seal - per linear foot {meter} REINFORCED CONCRETE BOX CULVERTS

524.01Description

This Section shall cover the work of constructing reinforced concrete box culverts in accordance with the details shown on the plans. The Contractor shall have the option of constructing either cast in place or precast concrete culverts if the required type of culvert is not shown on the plans.

524.02Materials

The requirements given in the following Sections shall be applicable (unless modified by the requirements given in this Section) to the construction of box culverts.  Section 214, Structure Excavation and Backfill for Drainage Structures and Minor Structures  Section 501, Structural Portland Cement Concrete  Section 502, Steel Reinforcement  Section 831, Precast Concrete Products

Concrete for cast in place culverts shall be Class B concrete.

Joint sealer shall be one of the types meeting the requirements given in Article 846.01, unless shown otherwise on the plans.

524.03Construction Requirements

Excavation and backfilling shall be in accordance with the requirements given in Section 214. In addition to the requirements given in Section 214, precast concrete culverts shall be placed on a bedding layer of backfill. The requirement for a bedding layer will be met if extra depth excavation and backfill is required. If extra depth excavation and backfill is not required, the bedding layer shall be a minimum compacted thickness of 4 inches {100 mm} of foundation backfill placed at least 2 feet {600 mm} wider than the extent of the outside walls (1 foot {300 mm} on each side of the culvert). REINFORCED CONCRETE BOX CULVERTS 399

The Contractor shall be fully responsible for protecting the quality of the water at the site of the culvert by preventing erosion and by capturing and removing sediment at diversion channels and cofferdams. Unless otherwise shown on the plans, provisions for water quality protection at the culvert site shall be designed and implemented by the Contractor. Details of these provisions shall be included in the Stormwater Management Plan.

The type (either cast in place or precast) of required culvert may be shown in the pay item descriptions for the culvert construction. The Contractor shall construct that type of culvert if the type designation is shown. The Contractor shall have the option of constructing either cast-in-place or precast concrete culverts if the required type of culvert is not shown in the pay item description.

The extension of a culvert shall include the cutting or breaking away of portions of the existing culvert and the preparation of the exposed structural material for joining with the new culvert materials.

Concrete for the bottom slab shall be placed and allowed to set before the placement of concrete for the walls and top slab. The walls and top slab in culverts that have an overall height of 8 feet {2400 mm} or less may be constructed with a continuous placement of concrete. The walls and top slab in culverts that have an overall height greater than 8 feet {2400 mm} shall be constructed by separate placements of concrete. When the walls and top slab are constructed by separate placements of concrete, the concrete in the walls shall be strong enough to allow the placement of the concrete without damage to the walls.

All construction joints shall be thoroughly cleaned of all debris. The concrete surface shall be carefully chipped and roughened in accordance with the method of bonding construction joints given in Section 501.

Construction joints shall be provided on all culverts over 60 feet {18 m} in length with the spacing of the joints set to provide approximately equal length sections along the culvert. One construction joint will be required for culvert lengths between 60 feet {18 m} and 90 feet {27 m}. Two construction joints will be required for culvert lengths greater than 90 feet {27 m} and less than 135 feet {41 m}. Three construction joints will be required for culverts from 136 feet {41 m} to 170 feet {52 m} in length. For culverts over 170 feet {52 m} in length, construction joints shall be spaced at approximately equal intervals of not less than 40 feet {12 m} nor more than 55 feet {17 m}. All required construction joints shall be constructed normal to the center line of the culvert.

The height and width of the openings shall not vary by more than 1 % from the plan dimensions. The slabs and walls shall not be thinner than the plan dimensions, but may be thicker by 5 % more than the plan dimensions. The interior surfaces shall not vary by more than 1/4 of an inch {6 mm} from a 10 foot {3 m} straightedge placed anywhere on any interior surface. The clearance of the reinforcing steel shall not be less than the plan clearance and shall not be greater than 3/8 of an inch {9 mm} more than the required plan clearance.

Precast Box Culvert units shall be manufactured in accordance with the details given in AASHTO M 259 {M 259M} "Precast Reinforced Concrete Box Sections for Culverts, Storm Drains, and Sewers". Each precast unit shall be a one-piece design cast as a monolithic unit. REINFORCED CONCRETE BOX CULVERTS 400

Details and design calculations, sealed by a Licensed Professional Engineer, shall be submitted as Shop Drawings in accordance with all of the requirements given in Article 105.02 when the conditions of loading differ from what is given in AASHTO M 259 {M 259M}. Details and design drawings shall be submitted as Working Drawings for all pipe entrances, connections to drainage structures, bends in culvert alignment, wingwalls, aprons and guardrail attachment in accordance with Article 105.02

A uniform transition shall be constructed where new or existing cast in place culverts are extended with precast units. A doweled or tongue and groove connection shall be provided at the junction of the precast unit and the cast in place section. Details and design calculations for the transition shall be submitted in accordance with the requirements given in Article 105.02 for the submittal of Working Drawings.

Precast units shall be laid to the same line and grade requirements noted in Item 530.03(a)2. for pipe. The units shall be connected so that there are no gaps between the ends of the units and the inner surfaces are flush and even. Sealant shall be applied to the mating surfaces of each unit. The method of sealing the joints shall be the method given for concrete pipe in Subitem 530.03(d)3a. Unless shown otherwise on the plans, the Contractor shall have the option to use any of the type joint sealers given for rigid pipe in Article 846.01.

Precast units shall be backfilled in accordance with the requirements given for pipe in Subarticle 530.03(e).

End sections for precast units, if required, shall be constructed in accordance with the details shown on the plans.

524.04Method of Measurement

Payment for reinforced concrete box culverts will be based on units of cubic yards {cubic meters} of Culvert Concrete and pounds {kilograms} of Steel Reinforcement. The quantity of concrete and reinforcing steel for both cast in place and precast concrete culverts shall be based on the height and width of the openings, the number of barrels, the length of the culvert, and the quantity of concrete and reinforcing steel per unit length of the culvert shown on the plans for the construction of cast in place culverts. The quantity of concrete and reinforcing steel shown for precast culverts will always be the quantity required for the construction of a cast in place culvert with the same height and width of openings, number of barrels and length. Wingwalls, parapets, toewalls, and apron quantities shall also always be based on the quantities given on the plans for cast in place construction regardless of a requirement for the installation of precast units. No additional payment will be made where barrel lengths, apron areas, backfilling, or items of work have to be increased due to the Contractor selecting the option to furnish and install precast units. Fill concrete required between barrels of precast units will not be measured or paid for separately. Steel Reinforcement will be measured and paid for under Section 502. Excavation and Backfill will be measured and paid for under Section 214 with the limitation that payment for foundation backfill for a bedding layer for precast concrete culverts will only be made for a thickness of 4 inches {100 mm} and a width of 2 feet {600 mm} wider than the extent of the outside walls. Separate payment will not be made for any other items of work involved.

524.05Basis of Payment

The contract price for Culvert Concrete and Culvert Concrete Extension shall be full compensation for all labor, tools, equipment, and incidentals necessary to construct the complete culvert and related structures (toe walls, wing walls, parapets, connections to drainage structures, etc.). The contract