14th_Ave._-_Tech_Specs.pdf

Hurricane Nicole Dune Walkover Repairs 14th Ave.

Project Technical Specifications

Original Date: April 24, 2024

NOTE TO BIDDERS: ITEMS 1 THROUGH 11 BELOW WILL BE PAID USING FEMA FUNDING.

THE CONTRACTOR SHALL BE AWARE OF FEMA REPORTING REQUIREMENTS FOR

DEMOLITION, HAULING AND DISPOSAL OR DEBRIS WHEN PREPARING BIDS; THESE

REQUIREMENTS ARE DETAILS IN ITEM 5 DEMOLITION, HAULING AND DISPOSAL

BELOW. DAVIS BACON WAGE REQUIREMENTS DO NOT APPLY TO THIS PROJECT.

Item 1 Mobilization and Demobilization:

The work specified in this section consists of the preparatory work and operations necessary for the movement of personnel, equipment, supplies and incidentals to the project site, and for the establishment of temporary offices, buildings, safety equipment and first aid supplies, sanitary and other facilities, as required by these Technical Specifications, the construction plans, and State and local laws and regulations. All costs for the necessary bonds as indicated in the bid document shall be included in this item. All costs for securing temporary laydown areas for the storage of equipment and materials shall be included in this item. The CONTRACTOR is advised that overnight storage of materials, and overnight parking of equipment, on the beach is expressly prohibited at any time.

All costs for permits (including required COUNTY building permits) and any required insurance, and any other pre-construction expense necessary for the start of the work, as well the cost of the removal of the above items, shall also be included in this item. All costs associated with trimming/clearing of trees, other vegetation, any other materials, removal of timber structures, other site preparation tasks necessary to allow construction of the project, shall also be included in this item. All costs associated with collecting complete photographic and video documentation of the site prior to construction shall also be included in this item. The bid price for this item shall include all costs associated with restoring any sodded areas disturbed by construction to pre-work conditions.

At the pre-construction meeting, the Contractor shall submit a tentative work schedule, safety plan, a temporary traffic control (TTC) plan, hurricane plan, a shipping, stockpile and site administration plan (SSSAP), a complete list of all SUBCONTRACTORS that will be employed by the PRIME CONTRACTOR, and complete contact information for PRIME CONTRACTOR staff and all SUBCONTRACTOR staff. Personnel to be included in the contact lists shall include, but not necessarily be limited to: CONTRACTOR and SUBCONTRACTOR Principals, CONTRACTOR and SUBCONTRACTOR Project Managers, CONTRACTOR and SUBCONTRACTOR Site Superintendents and/or Foremen. In addition, emergency contact information shall be included for the PRIME CONTRACTOR and all SUBCONTRACTORS.

The CONTRACTOR shall note that this project involves construction on the beach, and the CONTRACTOR shall be familiar with Volusia County’s Standard Environmental Conditions for Beach Construction Operations, which have been included in the General Notes of the construction plans. Of a particular note, the CONTRACTOR shall be aware that storage of equipment and materials on the beach is forbidden at all times.

The basis of payment for Mobilization and Demobilization shall be LUMP SUM.

Fifty (50) percent of this lump sum cost shall be paid upon mobilization of equipment to the project site. The final fifty (50) percent of this cost shall be paid upon removal of all equipment from the project site.

Item 2 Construction Survey and As-Built Survey:

The bid price for this item shall include all necessary survey work for the CONTRACTOR to complete all construction activities. Elevations for the plans are based on the NAVD 1988 vertical datum.

The CONTRACTOR shall furnish the services of a State of Florida licensed land surveyor for the field layout of all work. The CONTRACTOR’S licensed land surveyor shall perform all initial site layout and shall provide follow-up verification of all work underway at a frequency of no less than once a week. All deviations from the construction plans, no matter how minor, that are noted during the follow-up verifications shall be recorded on the project redline plan set which shall always be maintained on the site and submitted to the ENGINEER prior to project close-out.

The ENGINEER must approve the initial site stakeout before any work begins; the CONTRACTOR shall provide a minimum of 72 hours’ notice to the ENGINEER of the anticipated completion of the initial stake-out so the inspection and field verification can be scheduled. Prior to start of construction, the surveyor shall also locate any protected/threatened vegetative species located within or adjacent to (within 25 feet) of the project area so these may be flagged and appropriate protective measures set up prior to starting work. All intermediate construction surveys shall be included in this item. CONTRACTOR is cautioned that the survey must be conducted with respect to adjacent site aspects and must contact ENGINEER for any clarification prior to any construction.

The bid price for this item shall also include all necessary survey work for the CONTRACTOR to furnish an as-built survey of the completed project. The as-built survey shall be referenced to the NAVD 1988 vertical datum. The CONTRACTOR shall submit two (2) hard copies and one (1) electronic copy of the as-built survey for the completed project. These documents shall be signed and sealed by a professional surveyor registered in the State of Florida and then submitted to the ENGINEER for approval. The CONTRACTOR shall accurately record the location and elevations of all constructed grades and structures including but not limited to:

top elevations of deck boards at maximum 10-foot intervals, ADA grab rail, top/bottom elevation on ramp sections, existing grade around the structure.

The basis of payment for Construction Survey and As-Built Survey shall be LUMP SUM. Thirty (30) percent of this lump sum cost shall be paid upon acceptance of the initial site stakeout by the ENGINEER. The remainder of the cost shall be paid as the project progresses.

Item 3 Environmental Compliance:

The bid price for this item shall include, but not be limited to, the necessary manpower, equipment and materials needed to maintain regulatory compliance and environmental protection during all phases of construction. This item includes all costs related to obtaining a NPDES permit and complying with all NPDES permit requirements.

The CONTRACTOR is advised that numerous gopher tortoise (Gopherus polyphemus) burrows could potentially be within project area .The COUNTY shall be responsible for locating and flagging active burrows, and for relocating tortoises that are within the area enclosed by the silt fencing set by the COUNTY. Under no circumstances shall the CONTRACTOR allow any personnel who are not licensed gopher tortoise agents with the State of Florida handle or otherwise disturb a gopher tortoise in any way.

This project includes construction activity on the beach, and the CONTRACTOR shall be familiar with Volusia County’s standards and requirements for beachside construction, which are included in the notes on the construction plans. The CONTRACTOR is absolutely forbidden to traverse dunes with vehicles or other construction equipment and shall drive equipment onto or off the beach only at designated vehicular access points. The CONTRACTOR shall be responsible for arranging for any needed escort of equipment in transit by beach safety personnel, with sufficient notice given. Overnight storage of equipment or materials on the beach is prohibited at all times. The CONTRACTOR shall be solely responsible for payment of any penalties or fines levied by the COUNTY or other regulatory agencies for violating these or other permit requirements.

The CONTRACTOR is advised that sea turtle nesting season is active between May 1 and October 31, and while nesting season is active, beachside construction activity is subject to severe restrictions and some activities, such as pile driving, are prohibited. The CONTRACTOR shall be responsible for scheduling the work so that beachside construction activity does not fall within the active nesting season described above.

The bid price for this item shall include all costs associated with regularly inspecting and maintaining all erosion, sediment, and turbidity control measures employed during construction of this project, as well as any necessary repairs and/or replacement of these measures, with the need determined through regular inspections conducted at minimum intervals as specified in the NPDES and other project permits, and/or at the direction of the ENGINEER and/or COUNTY. Copies of the control measure inspection reports shall be submitted to the ENGINEER within one week of the inspection, and a summary of corrective measures taken to address noted deficiencies shall be included. A weekly log of these inspections shall be provided to the ENGINEER.

In addition, the CONTRACTOR shall comply with all permits for this project and throughout the duration of the project. Removal of all control measures from the project site once the work has been completed is required before final acceptance of the project by the COUNTY.

The basis of payment for Environmental Compliance shall be LUMP SUM. Fifty

(50) percent of this lump sum cost shall be paid upon obtaining an NPDES permit and properly installing all erosion and turbidity control measures. The remainder of the cost shall be paid as the project progresses. Removal of all control measures from the project site once the work has been completed is required before final acceptance of the project by the COUNTY.

Item 4 Temporary Traffic Control:

manpower, equipment and materials needed to provide temporary traffic control through the project area for the duration of construction. The project areas are accessed from South Atlantic Avenue; this roadway has high traffic volume during normal working hours, and it is anticipated that trucks hauling materials to and from the project site will be frequently entering and leaving the project area through this roadway.

At the preconstruction meeting, the CONTRACTOR shall submit a temporary traffic control plan (TTC) to the ENGINEER and the COUNTY for approval. This TTC Plan shall conform to the requirements of Standard Plans Index 102-600 and other applicable indexes of the Florida Department of Transportation Standard Plans (FY 2021-22). The TTC Plan shall also include details ensuring the safe delivery and removal of materials by trucks from temporary stockpile areas established near the project area; the CONTRACTOR is advised that storage of equipment and materials on the beach is prohibited at all times. Any personnel utilized as flaggers must have completed a Temporary Traffic Control Flagger Training course offered by an FDOT-approved provider, and set-up, inspection and maintenance of temporary traffic control devices must be performed under the supervision of personnel who have completed an Intermediate level TTC course offered by an FDOT-approved provider.

The CONTRACTOR shall maintain copies of all training certificates on the project site at all times. The ENGINEER must be informed once TTC measures have been fully implemented so an inspection may be scheduled. The CONTRACTOR shall regularly inspect barricades, signs, fencing and other TTC devices employed on the job site, and shall repair or replace these as needed.

Removal of TTC devices and signage from the project site once the work has been completed is required before final acceptance of the project by the COUNTY.

The basis of payment for Temporary Traffic Control shall be LUMP SUM. Fifty (50) percent of this lump sum cost shall be paid upon obtaining TTC devices and signage have been deployed per the approval TTC plan. The remainder of the cost shall be paid once the work has been completed before final acceptance of the project by the

COUNTY.

Item 5 Demolition, Hauling and Disposal:

The bid price for this item shall include, but not be limited to, the required manpower, equipment, materials and other costs involved in removal and disposal of the existing timber structures and seawall. Demolition of the existing timber structure shall be accomplished in a manner which minimizes damage and disturbance of the dunes and beachside resources to the greatest extent that is practical.

The CONTRACTOR shall take all necessary precautions to avoid damage to dune grasses and other upland vegetation and trees to be preserved during removal, demolition and hauling of debris. In addition, the CONTRACTOR shall take all necessary precautions to avoid impacts to beachside resources during demolition and removal of the existing structures. All environmental protection measures shall be in place before any construction activity commences. The CONTRACTOR shall be responsible for contacting Sunshine 811 to locate all underground utilities in and adjacent to the project area prior to starting any demolition or other work below existing grades.

The basis of payment for Demolition, Hauling and Disposal shall be LUMP SUM.

Item 6 Fill Material:

The bid price for this item shall include, but not be limited to, the required manpower, equipment, materials, and other costs involved in construction of the fill material located within the project area as indicated in the construction plans. Cost of compaction and testing of fill material to the required thickness and density as indicated in the construction plans shall be included with this item.

The CONTRACTOR shall be responsible for providing sieve analysis and compaction testing (per ASTM D-1557) for all imported fill material. Imported fill shall be placed in 1-foot lifts and compacted to 98% maximum dry density value per ASTM T-1557. All required geotechnical testing and compaction testing results shall be submitted to the ENGINEER for approval. No payment shall be made for any structural fill material delivered or placed without this approval. The CONTRACTOR shall be responsible for all costs associated with removal and replacement of fill material not meeting the requirements listed above, at no additional cost to the COUNTY.

Haul tickets shall be submitted to the ENGINEER along with pay applications on which payment for this item is requested.

The basis of payment for Fill Material shall be CUBIC YARDS.

Item 7 UC-75 Sheet Pile Bulkhead:

manpower, equipment and materials needed to furnish and install the Composite Sheet Pile (CMI UC-75 or equivalent) bulkhead wall as indicated in the construction plans. The bid price for this item shall also include the necessary manpower, equipment and materials required to remove all existing composite seawall and concrete cap from the project area, stockpiling the riprap at the project area, and replacing riprap with Type D1 filter fabric as indicated on the construction plans once all sheets have been driven.

The CONTRACTOR is responsible for providing a pile driving methodology that will properly attain the indicated embedment of the sheet piles, and that meets the sheet pile manufacturer’s construction requirements and instructions and must submit calculations verifying the methods and procedures for such installation. Jetting of piles is permitted only with the written approval of the ENGINEER, and under any circumstances the final five feet of length of all sheets must be driven. Sheet piles must be embedded with the appropriate machinery and the CONTRACTOR is responsible for replacement, at no additional cost to the COUNTY, of any broken, cracked or misaligned sheet pilings. A copy of the geotechnical report prepared for this project is included in the contract documents; the CONTRACTOR is responsible for being familiar with this report when preparing the pile driving methodology.

The CONTRACTOR shall inspect all sheet piles that are delivered to the site, and shall stockpile sheet piles in a manner that ensures sheets are undamaged. It is the CONTRACTOR’S responsibility to reject any sheet pile that is delivered to the site damaged to an extent where it is in unusable condition. Any damaged sheets that are driven shall be repaired or replaced at the direction of the ENGINEER, at no additional cost to the COUNTY.

The CONTRACTOR is responsible for maintaining up-to-date pile driving logs at all times during the project. In addition to the weekly submittal requirements for driving logs noted in the General Conditions above, the CONTRACTOR shall make the driving logs available for inspection by the ENGINEER and/or COUNTY at any time requested. The information to be recorded in the log shall be per “Pile Installation” Note 8 of the General Notes, Sheet C-09 of the construction plans. The CONTRACTOR shall submit the final pile driving logs so the ENGINEER may review them prior to final project acceptance. The ENGINEER shall not make a structural certification without this submittal.

Absolutely no sheet piles shall be cut to design top elevation, beyond the top six (6) inches of the pile which is damaged by driving, without prior written approval of the ENGINEER. If the CONTRACTOR requests to cut off sheet piles, the piles must remain “in-place, as-is”, and the ENGINEER notified a minimum of 72 hours in advance so a site visit and recommendations based on observed field conditions can be made. Any pile cut off without prior written approval from the ENGINEER shall be removed and replaced at the CONTRACTOR’S expense.

The basis of payment for UC-75 Sheet Pile Bulkhead shall be per LINEAR FOOT.

Item 8 Concrete Cap:

The bid price for this item shall include, but not be limited to, the necessary manpower, equipment and materials needed to properly construct and install the concrete cap, and other incidental related construction as indicated in the construction plans.

The CONTRACTOR is responsible for submitting shop drawings for steel, concrete mixes, joint sealant and other hardware/materials for ENGINEER’S approval before any cap. Concrete trucks shall not be allowed within 25 feet of the seawall. The CONTRACTOR shall ensure that the proper mix design for the cap concrete, as indicated in the construction plans, is submitted to the ENGINEER for approval prior to pouring any concrete. The CONTRACTOR shall also submit shop drawings and technical data sheets for all reinforcing steel products to the ENGINEER for selection and approval prior to construction.

Stainless steel dowels used at joints shall be greased and cast directly into concrete as specified in the construction plans. Drilling holes in concrete which has set for placement of dowels is prohibited, and cap sections which have drilled dowel holes shall be removed and replaced by the CONTRACTOR at no additional expense to the COUNTY.

The CONTRACTOR shall inform the ENGINEER a minimum of 72 hours in advance of pouring concrete for the cap so an inspection can be scheduled to check the placement of reinforcing steel inside the forms. The CONTRACTOR shall ensure sufficient chairs, non-metallic ties and other measures are utilized to ensure reinforcing steel is not allowed to shift position excessively when pouring concrete for the cap. The CONTRACTOR shall place concrete in a manner that minimizes movement of reinforcing steel during the pour and shall ensure that concrete is thoroughly vibrated while being poured. Excessively honeycombed sections of concrete cap will be rejected, and the CONTRACTOR shall replace these at no additional cost to the COUNTY. The CONTRACTOR shall notify the ENGINEER once the forms for the cap are removed after cap concrete has been poured so an inspection of the finished cap can be conducted.

All costs associated with material testing of each truck of concrete will be the responsibility of the CONTRACTOR and such cost shall be included in this line item.

See notes and specifications in the construction plans for more information on alignment and rebar configuration.

The CONTRACTOR shall take all precautions necessary to prevent excessive loads from being applied to the bulkhead wall by earth-moving equipment and methods, and shall carefully note all structures and other items that are indicated to be moved, stored, and/or preserved, and not explicitly indicated to be demolished, are protected throughout construction. Any such item that is damaged or destroyed by construction activity shall be repaired and/or replaced by the CONTRACTOR at no additional cost to the COUNTY.

This item shall also include all required testing for cap concrete. All testing shall be performed by a licensed Florida engineering firm.

The basis of payment for Concrete Cap shall be per LINEAR FOOT.

Item 9 Concrete Plug:

manpower, equipment, materials, and other provisions needed to construct the concrete plug. The CONTRACTOR shall construct the concrete plug as shown in the construction plans. The CONTRACTOR shall notify the ENGINEER when construction of the plug is complete, prior to installation and construction of fill material.

The basis of payment for Concrete Plug shall be per LUMP SUM.

Item 10 Pedestrian Access Timber Structure with Handrail:

manpower, equipment, materials, hardware and incidentals needed to construct all components of the timber pedestrian access structure, as indicated in the construction plans. Components to be constructed include, but are not limited to, 6” x 6” support posts, cap boards, stringers, deck boards, aluminum ADA grab rails, composite railing cap, and stairs.

Wooden posts may be augured, jetted or driven via impact or vibratory hammer to achieve the embedment depth and orientation indicated in the plans. The CONTRACTOR is responsible for attaining the depth of embedment indicated in the plans. All timber must be free of splinters, cracks, knots or sap. All timber must be treated with wood preservative products as indicated in the plans, to the treatment retention levels indicated in the plans, and must be southern yellow pine (SYP) meeting the grade requirements indicated in the plans. Any timber deemed unsuitable by the ENGINEER will be removed and replaced at the CONTRACTOR'S expense.

All hardware used for the construction of the access structure must be 316-alloy stainless steel; under no circumstances will any alternative materials or other stainless steel alloys be accepted. All temporary fasteners must be removed prior to acceptance of the finished structure. Nails shall not be used as permanent fasteners under any circumstances. The CONTRACTOR shall ensure that all handrail components fight tightly and are sanded, beveled and finished as needed to eliminate the potential for injury to users from gouges or contact with sharp edges.

The CONTRACTOR must submit shop drawings, cut sheets and technical data sheets for all timber products, stainless steel hardware and fasteners, and aluminum to the ENGINEER prior to purchase or construction. Any products or materials manufactured, purchased or installed prior to shop drawing approval will be replaced at the CONTRACTOR’S expense if the above noted approvals have not been obtained.

The CONTRACTOR must submit post driving logs prior to final acceptance of the project and must at any time during construction submit these logs for inspection at the request of the COUNTY or the ENGINEER. Except for cutting included in the plan notes to remove tops damaged by driving, absolutely no posts shall be cut to final top elevation without the prior written approval of the ENGINEER. If the CONTRACTOR requests cutting support posts to design top height due to refusal, the posts shall remain “in place, as-is” until the ENGINEER can visit the site and make a determination. The CONTRACTOR shall give the ENGINEER 72 hours’ notice to schedule a site inspection when requesting support post cut off. The ENGINEER may request several attempts to drive posts to design embedment depth utilizing alternative methods such as punching, employment of metal shoes and/or multiple manifold jetting. These efforts shall be made at no additional expense to the COUNTY. Any support posts cut off without this approval shall be removed and replaced by the CONTRACTOR at no additional cost to the COUNTY.

The basis of payment for Pedestrian Access Timber Structure with Handrail shall be per SQUARE FOOT.

Item 11 Helical Anchors:

manpower, equipment, materials, and any other provisions needed for the installation of helical anchors. The CONTRACTOR shall perform helical anchor tests and provide the ENGINEER with the results. The CONTRACTOR shall notify the ENGINEER when installation is complete and provide helical anchor load test of each installed anchors.

The basis of payment for Helical Anchors is per EACH.