Demolition Technical Specs Package.pdf

HDR Engineering Inc. 555 N. Carancahua, Suite 1600, Corpus Christi, TX 78401-0849 (361) 696-3300

TBPELS Firm Registration No. F-754

Technical Specifications Brownsville Navigation District Cargo Dock No. 3 Demolition HDR Project No. 10320226

Port of Brownsville, Brownsville, Texas September 22, 2023

BND CD3 Phase 1 - Demolition Package IFB

PROJECT TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

01 33 00 SUBMITTAL PROCEDURES

DIVISION 02 - EXISTING CONDITIONS

02 22 13 DEMOLITION VIBRATION MONITORING

02 41 00 DEMOLITION

-- End of Project Table of Contents --

PROJECT TABLE OF CONTENTS

SECTION 01 33 00

SUBMITTAL PROCEDURES

PART 1 GENERAL

1.1 SUMMARY

The Owner may request submittals in addition to those specified when deemed necessary to adequately describe the work covered in the respective sections.

Units of weights and measures used on all submittals are to be the same as those used in the contract drawings. Each submittal is to be complete and in sufficient detail to allow ready determination of compliance with contract requirements.

Contractor to check and approve all items before submittal and stamp, sign, and date indicating action taken. Proposed deviations from the contract requirements are to be clearly identified. Include within submittals items such as: Contractor's, manufacturer's, subcontractor's, or fabricator's shop and installation drawings; descriptive literature including (but not limited to) catalog cuts, diagrams, operating charts or curves; test reports; test cylinders; samples; O&M manuals (including parts list);

certifications; warranties; installation procedures; and other such required submittals.

Submittals requiring Owner's review are to be scheduled and approval obtained prior to the acquisition of the material or equipment covered thereby. Pick up and dispose of samples not incorporated into the work in accordance with manufacturer's Material Safety Data Sheets (MSDS) and in compliance with existing laws and regulations.

1.2 DEFINITIONS

1.2.1 Submittal Descriptions (SD)

Submittal requirements are specified in the technical sections. Examples and descriptions of submittals identified by the Submittal Description (SD) numbers and titles follow:

SD-01 Pre-Demolition Submittals

Submittal Register

SD-06 Reports

Investigation reports

Daily logs and checklists

SD-11 Closeout Submittals

Documentation to record compliance with technical or administrative requirements or to establish an administrative mechanism.

Submittals required for Guiding Principle Validation (GPV) or Third Party Certification (TPC).

Special requirements necessary to properly close out a demolition contract. For example, Record Drawings and as-built drawings. Also, submittal requirements necessary to properly close out a major phase of demolition on a multi-phase contract.

1.2.2 Approving Authority

Office or designated person authorized to approve the submittal.

1.2.3 Work

As used in this section, on-site and off-site demolition required by contract documents, including labor necessary to produce submittals, demolition, materials, products, equipment, and systems incorporated or to be incorporated in such demolition.

1.3 SUBMITTALS

Submit the following in accordance with Section 01 33 00 SUBMITTAL

PROCEDURES:

SD-01 Pre-Demolition Submittals

Submittal Register

SD-06 Reports

Investigation Reports

Daily Logs And Checklist

SD-11 Closeout Submittals

Documentation To Record Compliance with technical requirements or to establish an administrative mechanism

Submittals Required For Guiding Principle Validation (GPV) or Third Party Certification (TPC).

Special Requirements Necessary To Properly Close Out A Demolition Contract. For example, Record Drawings and as-built drawings.

Also, submittal requirements necessary to properly close out a major phase of demolition on a multi-phase contract.

1.4 PREPARATION

1.4.1 Transmittal Form

Transmit each submittal, except sample installations and sample panels to the office of the approving authority using the transmittal form prescribed by the Owner. Include all information prescribed by the transmittal form and required in paragraph IDENTIFYING SUBMITTALS. Use the submittal transmittal forms to record actions regarding samples.

1.4.2 Identifying Submittals

When submittals are provided by a Subcontractor, the Prime Contractor shall prepare, review and stamp with Contractor's approval all specified submittals prior to submitting to Owner.

Identify submittals, except sample installations and sample panels, with the following information permanently adhered to or noted on each separate component of each submittal and noted on transmittal form. Mark each copy of each submittal identically, with the following:

a. Project title and location

b. Demolition contract number

c. Dates of the drawings and revisions

d. Name, address, and telephone number of Subcontractor, supplier, manufacturer, and any other Subcontractor associated with the submittal.

e. Section number of the specification by which submittal is required

f. Submittal description (SD) number of each component of submittal

g. For a resubmission, add alphabetic suffix on submittal description, for example, submittal 18 would become 18A, to indicate resubmission

h. Product identification and location in project.

1.4.3 Format of SD-06 Reports

Provide investigation reportsreports on 8 1/2 by 11 inches paper in a complete bound volume. Indicate by prominent notation, each report in the submittal. Indicate specification number and paragraph number to which it pertains.

Provide daily logs and checklist daily logs and checklist as indicated in 02 22 13 DEMOLITION VIBRATION MONITORING and/or 02 41 00 DEMOLITION.

1.4.4 Format of SD-01 Pre-Demolition Submittals and SD-11 Closeout Submittals

When submittal includes a document which is to be used in project or become part of project record, other than as a submittal, do not apply Contractor's approval stamp to document, but to a separate sheet accompanying document.

Closout submittals shall include: 1) Documentation to record compliance with techincal or administrative requirements or to establish an administrative mechanism; 2) submittals required for guiding principle validation (gpv); and 3) special requirements necessary to properly close out a demolition contract For example, Record Drawings and as-built drawings.Also, submittal requirements necessary to properly close out a major phase of demolition on a multi-phase contract.

1.5 QUANTITY OF SUBMITTALS

1.5.1 Number of SD-01 Pre-Demolition Submittal Copies

Unless otherwise specified, submit three sets of administrative submittals.

1.5.2 Number of SD-06 Report Copies

Submit in compliance with quantity and quality requirements specified for shop drawings, other than field test results that will be submitted with QC reports.

1.5.3 Number of SD-11 Closeout Submittals Copies

Unless otherwise specified, submit three sets of administrative submittals.

1.6 INFORMATION ONLY SUBMITTALS

Normally submittals for information only will not be returned. Response from the Owner is not required on information only submittals. The Owner reserves the right to require the Contractor to resubmit any item found not to comply with the contract. This does not relieve the Contractor from the obligation to furnish material conforming to the plans and specifications.

1.7 VARIATIONS

Variations from contract requirements require Owner approval.

1.7.1 Considering Variations

Discussion of variations with the Owner before submission will help ensure that functional and quality requirements are met and minimize rejections and resubmittals.

Specifically point out variations from contract requirements in a transmittal letter. Failure to point out variations may cause the Owner to require rejection and removal of such work at no additional cost to the Owner.

1.7.2 Proposing Variations

When proposing variation, deliver a submittal, clearly marked as a "VARIATION" to the Owner, with documentation illustrating the nature and features of the variation including any necessary technical submittals and why the variation is desirable and beneficial to Owner. If lower cost is a benefit, also include an estimate of the cost savings. In addition to documentation required for variation, include the submittals required for the item. Clearly mark the proposed variation in all documentation.

1.7.3 Warranting that Variations are Compatible

When delivering a variation for approval, the Contractor warrants that this contract has been reviewed to establish that the variation, if incorporated, will be compatible with other elements of work.

1.7.4 Review Schedule Extension

In addition to the normal submittal review period, a period of 10 working days will be allowed for the Owner to consider submittals with variations.

1.8 SUBMITTAL REGISTER AND DATABASE

Prepare and maintain submittal register, as the work progresses. A submittal register showing items of equipment and materials for which submittals are required by the specifications is provided as an attachment.

This list may not be all inclusive and additional submittals may be required.

The Contractor is to track all submittals by maintaining a complete list, including completion of all data columns, including dates on which submittals are received and returned by the Owner.

The Contractor is required to maintain the submittal register and submit it to the Owner for review monthly. The approved submittal register will serve as a scheduling document for submittals and will be used to control submittal actions throughout the contract period. Coordinate the submit dates and need dates with dates in the Contractor prepared progress schedule. Submit monthly or until all submittals have been satisfactorily completed, updates to the submittal register showing the Contractor action codes and actual dates with Owner action codes. Revise the submittal register when the progress schedule is revised and submit both for approval.

1.8.1 Use of Submittal Register

Submit submittal register with QC plan and project schedule. Verify that all submittals required for project are listed and add missing submittals.

1.8.2 Copies Delivered to the Owner

Deliver one copy of submittal register updated by Contractor to Owner with each invoice request.

1.9 SCHEDULING

Schedule and submit concurrently submittals covering component items forming a system or items that are interrelated. Include certifications to be submitted with the pertinent drawings at the same time. No delay damages or time extensions will be allowed for time lost in late submittals.

a. Coordinate scheduling, sequencing, preparing, and processing of submittals with performance of work so that work will not be delayed by submittal processing. Allow for potential resubmittal of requirements from the QC manager.

b. Submittals called for by the contract documents are listed on the register. If a submittal is called for but does not pertain to the contract work, the Contractor is to include the submittal in the register and annotate it "N/A" with a brief explanation. Approval by the Owner does not relieve the Contractor of supplying submittals required by the contract documents but that have been omitted from the register or marked "N/A."

c. Re-submit register and annotate monthly by the Contractor with actual submission and approval dates. When all items on the register have been fully reviewed by Owner with no exception taken, no further re-submittal is required.

d. Carefully control procurement operations to ensure that each individual submittal is made on or before the Contractor scheduled submittal date shown on the approved "Submittal Register."

e. Except as specified otherwise, allow review period, beginning with receipt by Owner, of 10 working days for submittals for Owner's review.

Period of review for submittals with Owner begins when Owner receives submittal from Contractor.

f. Period of review for each resubmittal is the same as for initial submittal.

Within 15 calendar days to notice to proceed, provide, for review by the Owner, the following schedule of submittals:

a. A schedule of shop drawings and technical submittals required by the specifications and drawings. Indicate the specification or drawing reference requiring the submittal; the material, item, or process for which the submittal is required; the "SD" number and identifying title of the submittal; the Contractor's anticipated submission date and the review need date.

b. A separate schedule of other submittals required under the contract butnot listed in the specifications or drawings. Schedule will indicate the contract requirement reference; the type or title of the submittal;

the Contractor's anticipated submission date and the review need date if approval is required.

1.9.1 Reviewing, Certifying, and Approving Authority

The Contractor is responsible for checking and reviewing and certifying that submittals are in compliance with contract requirements.

1.9.2 Constraints

Conform to provisions of this section, unless explicitly stated otherwise for submittals listed or specified in this contract.

Submit complete submittals for each definable feature of the work. Submit at the same time components of definable features that are interrelated as a system.

When acceptability of a submittal is dependent on conditions, items, or materials included in separate subsequent submittals, the submittal will be returned without review.

Review of a separate material, product, or component does not imply review of the assembly in which the item functions.

1.9.3 Contractor Responsibilities

a. Check and review each submittal; and check and coordinate each submittal with for conformance with requirements of work and contract documents.

b. Ensure that material is clearly legible.

c. Stamp each sheet of each submittal with a QC certifying statement or an approving statement, except that data submitted in a bound volume or on one sheet printed on two sides may be stamped on the front of the first sheet only. Contractor will certify submittals forwarded to Owner with the following certifying statement:

"I hereby certify that the (equipment) (material) (article) shown and marked in this submittal is that proposed to be incorporated with Contract Number _______, is in compliance with the contract drawings and specification, can be installed in the allocated spaces, and is submitted for Owner approval.

Certified by Contractor _____________________, Date _______" (Signature)

d. Update submittal register as submittal actions occur, and maintain the submittal register at the project site until final review of all work by the Owner.

e. Retain a copy of completed submittals at project site, including Contractor's copy of samples.

1.10 OWNER RESPONSIBILITIES

The Owner will:

a. Note date on which submittal was received from Contractor.

b. Review submittals within scheduling period specified and only for general conformance with project design concepts and general compliance with contract documents.

c. Identify returned submittals with one of the actions defined in paragraph entitled, "Review Notations," of this section and with markings appropriate for action indicated.

Upon completion of review of submittals, stamp and date reviewed submittals. Two copies of the reviewed submittal will be retained by the Owner and three copies of the submittal will be returned to the Contractor.

The Owner may alternatively transmit the reviewed submittals to the Contractor electronically.

a. Submittals marked "approved" or "accepted" authorize proceeding with the work covered.

b. Submittals marked "approved as noted" or "approved, except as noted, resubmittal not required," authorize proceeding with the work covered provided that the Contractor takes no exception to the corrections.

c. Submittals marked "not approved," "disapproved," or "revise and resubmit" indicate incomplete submittal or noncompliance with the contract requirements or design concept. Resubmit with appropriate changes. Do not proceed with work for this item until the resubmittal is approved.

d. Submittals marked "not reviewed" indicate that the submittal has been previously reviewed and approved, is not required, does not have evidence of being reviewed and approved by Contractor, or is not complete. A submittal marked "not reviewed" will be returned with an explanation of the reason it is not reviewed. Resubmit submittals returned for lack of review by Contractor or for being incomplete, with appropriate action, coordination, or change.

e. Submittals marked "receipt acknowledged" indicate that submittals have been received by the Owner. This applies only to "information-only submittals" as previously defined.

1.11 REVIEW NOTATIONS

Owner review will be completed within 10 calendar days after date of submission. Submittals will be returned to the Contractor with the following notations:

a. Submittals marked "approved" or "accepted" authorize proceeding with the work covered.

b. Submittals marked "approved as noted" or "approved, except as noted, resubmittal not required," authorize proceeding with the work covered provided that the Contractor takes no exception to the corrections.

c. Submittals marked "not approved," "disapproved," or "revise and resubmit" indicate incomplete submittal or noncompliance with the contract requirements or design concept. Resubmit with appropriate changes. Do not proceed with work for this item until the resubmittal is approved.

d. Submittals marked "not reviewed" indicate that the submittal has been previously reviewed and approved, is not required, does not have evidence of being reviewed and approved by Contractor, or is not complete. A submittal marked "not reviewed" will be returned with an explanation of the reason it is not reviewed. Resubmit submittals returned for lack of review by Contractor or for being incomplete, with appropriate action, coordination, or change.

e. Submittals marked "receipt acknowledged" indicate that submittals have been received by the Owner. This applies only to "information-only submittals" as previously defined.

1.12 REJECTED SUBMITTALS

Contractor shall make corrections required by the Owner. If corrections are made to shop drawings, corrections shall be noted by clouding all corrections or changes. It will be assumed that, if not clouded, no revisions have been made and no "acceptance" is given to unclouded revisions.

If changes are necessary to submittals, the Contractor shall make such revisions and submission of the submittals. No item of work requiring a submittal change is to be accomplished until the changed submittals are approved.

1.13 REVIEWED SUBMITTALS

The Owner's review of submittals (i.e. submittals marked "NO EXCEPTION TAKEN") is not to be construed as a complete check, and indicates only that the general method of demolition, materials, detailing, and other information are satisfactory and meet requirements of design plans and specifications.

Owner's review will not relieve the Contractor of the responsibility for any error that may exist, as the Contractor under the Contractor Quality Control (CQC) requirements of this contract is responsible for dimensions, quantities, the design of adequate connections and details, and the satisfactory demolition of all work.

After submittals have been reviewed by the Owner, no resubmittal for the purpose of substituting materials or equipment will be considered unless accompanied by an explanation of why a substitution is necessary.

1.14 WITHHOLDING OF PAYMENT

Payment for materials incorporated in the work will not be made if required approvals by Owner have not been obtained.

1.15 PROGRESS SCHEDULE

1.15.1 Bar Chart

a. Submit the progress chart, for review by Owner, at the pre-demolition Conference in one reproducible and 4 copies.

b. Prepare the progress chart in the form of a bar chart utilizing form "Demolition Progress Chart" or comparable format acceptable to the Owner.

c. Include no less than the following information on the progress chart:

(1) Break out by major headings for primary work activity.

(2) A line item break out under each major heading sufficient to track the progress of the work.

(3) A line item showing contract finalization task which includes punch list, clean-up and demolition, and final demolition drawings.

(4) A materials bar and a separate labor bar for each line item.

Both bars will show the scheduled percentage complete for any given date within the contract performance period. Labor bar will also show the number of men (man-load) expected to be working on any given date within the contract performance period

(5) The estimated cost and percentage weight of total contract cost for each materials and labor bar on the chart.

(6) Separate line items for mobilization and drawing submittal and approval. (These items are to show no associated costs.)

d. Update the progress schedule in one reproduction and 4 copies every 30 calendar days throughout the contract performance period.

Alternatively, Contractor has the option of submitting the project schedule electronically, with at least 2 copies in hard-copy format.

1.15.2 Project Network Analysis

Submit the initial progress schedule within 21 calendar days of notice to proceed. Schedule is to be updated and resubmitted monthly beginning 7 calendar days after return of the reviewed initial schedule. Updating to entail complete revision of the graphic and data displays incorporating changes in scheduled dates and performance periods. Redlined updates will only be acceptable for use as weekly status reviews.

Contractor to provide a single point contact from his on-site organization as his Schedule Specialist. Schedule Specialist is to have the responsibility of updating and coordinating the schedule with actual job conditions. Schedule Specialist to participate in weekly status meetings and present current information on the status of purchase orders, shop drawings, off-site fabrication, materials deliveries, Subcontractor activities, anticipated needs for Owner furnished equipment, and any problem which may impact the contract performance period.

Include the following in the project network analysis:

a. Graphically display with the standard network or arrow diagram capable of illustrating the required data. Drafting to be computer generated on standard 24 by 36 inch (nominal size) drafting sheets or on small 11 by 17 inch minimum sheets with separate overview and detail breakouts. Provide a project network analysis that is legible with a clear, consistent method for continuations and detail referencing.

Clearly delineate the critical path on the display. Clearly indicate the contract milestone date on the project network analysis graphic display.

b. Data is to be presented as a separate printout on paper or, where feasible, may be printed on the same sheet as the graphic display. Data is to be organized in a logical coherent display capable of periodic updating.

c. Include within the data verbal activity descriptions with a numerical ordering system cross referenced to the graphic display. Additionally, costs (broken down into separate materials and costs), duration, early start date, early finish date, late start date, late finish date, and float are to be detailed for each activity. A running total of the percent completion based on completed activity costs versus total contract cost is to be indicated. A system for indicating scheduled versus actual activity dates and durations is also to be provided.

d. Sufficient detail to facilitate the Contractor's control of the job and to allow the Owner to readily follow progress for portions of the work should be shown within the schedule.

1.16 STATUS REPORT ON MATERIALS ORDERS

Within 20 calendar days after notice to proceed, submit, for review by the Owner, an initial material status report on all materials orders. This report will be updated and re-submitted every 30 calendar days as the status on material orders changes.

Report to include list, in chronological order by need date, materials orders necessary for completion of the contract. The following information will be required for each material order listed:

a. Material name, supplier, and invoice number.

b. Bar chart line item or CPM activity number affected by the order.

c. Delivery date needed to allow directly and indirectly related work to be completed within the contract performance period.

d. Current delivery date agreed on by supplier.

e. When item d exceeds item c, the effect that delayed delivery date will have on contract completion date.

f. When item d exceeds item c, a summary of efforts made by the Contractor to expedite the delayed delivery date to bring it in line with the needed delivery date, including efforts made to place the order (or subcontract) with other suppliers.

PART 2 PRODUCTS

Not Used

PART 3 EXECUTION

Not Used

-- End of Section --

SUBMITTAL FORM,Jan 96 PREVIOUS EDITION IS OBSOLETE PAGE 1 OF 3 PAGES

BND CD3 Demolition

01 33 00 SD-01 Pre-Demolition Submittals 1.8Submittal Register

SD-06 Reports 1.4.3Investigation Reports 1.4.3Daily Logs And Checklist

SD-11 Closeout Submittals 1.4.4Documentation To Record

Compliance 1.4.4Submittals Required For Guiding

Principle Validation (GPV) 1.4.4Special Requirements Necessary

To Properly Close Out A Demolition Contract

02 22 13 SD-01 Pre-Demolition Submittals 1.3.1Demolition Vibration

Management Plan 1.3.1Pre-demolition Report 1.3.1Mitigation Measures 3.1.1.1Pre-demolition Survey

Vibration Monitoring Plan SD-03 Product Data

1.3.2PPV Measurement Data 1.3.2Demolition Vibration Monitoring

Notifications Photographic Updates

SUBMITTAL REGISTER

CONTRACT NO.

TITLE AND LOCATION CONTRACTOR

CONTRACTOR:

SCHEDULE DATES

CONTRACTOR

ACTION

APPROVING AUTHORITY

A C T I V I T Y

N O

T R A N S M I T T A L

N O

S P E C

S E C T

DESCRIPTION

ITEM SUBMITTED

P A R A G R A P H

C L A S S I F I C A T I O N

G O V T

O R

A E

R E V W

R SUBMIT

APPROVAL

NEEDED

BY

MATERIAL

NEEDED

BY

A C T I O N

C O D E

DATE

OF

ACTION

DATE FWD

TO APPR

AUTH/

DATE RCD

FROM

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DATE FWD

TO OTHER

REVIEWER

DATE RCD

FROM OTH

REVIEWER

A C T I O N

C O D E

DATE

OF

ACTION

MAILED

TO

CONTR/

DATE RCD

FRM APPR

AUTH REMARKS

(a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) (m) (n) (o) (p) (q) (r)

SUBMITTAL FORM,Jan 96 PREVIOUS EDITION IS OBSOLETE PAGE 2 OF 3 PAGES

02 22 13 Changes In The Physical Features Of Structures

SD-06 Test Reports 3.1.3.1Vibration Monitoring Report

SD-07 Certificates 1.3.1Qualifications of the

Vibration-Monitoring Contractor Qualification of the Specialist Design Consultant

Qualification of the Land Surveyor

Qualifications of the Seismologist or other qualified vibration specialist

SD-09 Manufacturer’s Field Reports

1.3.2Deviations from the Demolition Vibration Monitoring Plan

SD-11 Closeout Submittals 1.3.3Vibration Monitoring Final Report

02 41 00 SD-01 Pre-Demolition Submittals 1.2.2Demolition Plan 1.2.2Pre-Demolition Survey

SD-07 Certificates 1.6Timely Notification Of Demolition

Projects

SUBMITTAL REGISTER

CONTRACT NO.

TITLE AND LOCATION CONTRACTOR

CONTRACTOR:

SCHEDULE DATES

CONTRACTOR

ACTION

APPROVING AUTHORITY

A C T I V I T Y

N O

T R A N S M I T T A L

N O

S P E C

S E C T

DESCRIPTION

ITEM SUBMITTED

P A R A G R A P H

C L A S S I F I C A T I O N

G O V T

O R

A E

R E V W

R SUBMIT

APPROVAL

NEEDED

BY

MATERIAL

NEEDED

BY

A C T I O N

C O D E

DATE

OF

ACTION

DATE FWD

TO APPR

AUTH/

DATE RCD

FROM

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REVIEWER

DATE RCD

FROM OTH

REVIEWER

A C T I O N

C O D E

DATE

OF

ACTION

MAILED

TO

CONTR/

DATE RCD

FRM APPR

SUBMITTAL FORM,Jan 96 PREVIOUS EDITION IS OBSOLETE PAGE 3 OF 3 PAGES

02 41 00 SD-11 Closeout Submittals 3.7Post-Demolition Surveys 3.3.5Receipts

SUBMITTAL REGISTER

CONTRACT NO.

TITLE AND LOCATION CONTRACTOR

CONTRACTOR:

SCHEDULE DATES

CONTRACTOR

ACTION

APPROVING AUTHORITY

A C T I V I T Y

N O

T R A N S M I T T A L

N O

S P E C

S E C T

DESCRIPTION

ITEM SUBMITTED

P A R A G R A P H

C L A S S I F I C A T I O N

G O V T

O R

A E

R E V W

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APPROVAL

NEEDED

BY

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NEEDED

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A C T I O N

C O D E

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DATE FWD

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FRM APPR

SECTION 02 22 13

DEMOLITION VIBRATION MONITORING

PART 1 GENERAL

1.1 DESCRIPTION

Subject to the requirements of the General and Special Conditions, this Section includes: the furnishing of all labor, materials, equipment, supervision, and every other thing necessary to develop a demolition monitoring program and to perform the related vibration monitoring as described herein.

1.1.1 Scope

Work under this section includes, but is not limited to, pre-demolition condition and topographic surveys, post demolition condition and topographic surveys, and monitoring of demolition-related vibration producing activities completed for this project. Vibration monitoring shall be conducted before, during and after any anticipated vibration producing activities such as, but not limited to:

a. Demolition

b. Site preparation and excavation activities

c. Pile removal

d. Sheet pile removal

e. Operation of demolition equipment, demolition traffic and other activities relatred to demolition. Coordinate traffic control and work zones with Port police.

The Contractor shall provide and install the necessary equipment to monitor any potential vibrations caused by their demolition operations or as directed by the Owner.

Existing structures/features which may be susceptible to vibrations effects at the project site include but are not limited to:

a. The United States Customs and Harbor Master Building

b. Above and below-ground utilities

c. The International Seafarer Center Building

d. Range Tower across Windhaus Road

The Contractor shall prepare a well-planned and executed, thorough demolition vibration management plan. The demolition vibration management plan should include at a minimum:

a. The qualifications of the staff preparing and executing the plan;

b. Identifying reasonable and appropriate vibration impact thresholds for human and building response to vibration;

c. Review of geotechnical and other information to assess subsurface conditions and the general propagation characteristics of soil in the project area;

d. Identifying equipment and activities with potential to cause or contribute to ground-borne vibration levels of concern;

e. A determination of the potential area of effect (AOE) through execution of an appropriate screening process;

f. An inventory and ranking of buildings and non-building structures and land uses within that AOE based on potential sensitivity to demolition-i nduced ground-borne vibration.

g. Windshield survey and site visits to enhance the inventory and ranking;

h. A process for contacting stakeholders to discuss potential concerns;

i. A determination of where pre- and post-demolition site inspections should occur (for photo and video inspections and potential installation of strain gauges and/or vibration monitoring equipment);

j. The types of monitoring equipment, feedback systems, and reporting requirements that are appropriate and;

k. Where reasonable and appropriate for controlled surveys of the target structures that are tied to survey monuments, and a right-of-entry process for obtaining access to private properties for the purposes of managing demolition vibration.

1.1.2 REQUIRED SUB-CONTRACTORS AND THEIR ROLES

1.1.2.1 Seismologist or Other Qualified Vibration Specialist

The seismologist or other approved qualified vibration specialist collects and analyzes data during the pre-demolition stage of the project, and in conjunction with the Brownsville Navigation District (Owner) and Contractor uses that information to:

a. Develop the monitoring Drawings for the existing structures/features.

b. Evaluate expected levels of demolition-related vibrations on the existing structures.

c. Assess means and methods for reducing potential vibrations at the existing structures/features.

The data collected shall include baseline ground motions caused by non-demolition vibration sources near the structures/features shown in the monitoring plan.

The seismologist or other approved qualified vibration specialist shall supervise the monitoring and recording of vibration by the vibration monitoring contractor, and shall also be required to recommend values for maximum peak particle velocities (PPV) thresholds and geographic limits of zones of influence for the existing structures/features that are identified in the monitoring plan.

The seismologist or other approved qualified vibration specialist shall prepare and submit a final report to the Owner at the completion of demolition.

1.1.2.2 Vibration Monitoring Contractor

The vibration monitoring contractor installs monitoring equipment, routinely observes vibrations during demolition, keeps records of the activities that create the vibrations, and will regularly update or inform the seismologist or other approved qualified vibration specialist and Contractor of his findings. The constant monitoring will allow the Contractor to limit the demolition related vibrations on the structures/features.

1.1.2.3 Specialty Design Consultant

The Specialty Design Consultant performs condition surveys of the existing structures/features prior to the Contractor's mobilization and documents any existing damage to the structures/features that are identified in the monitoring plan. The Specialty Design Consultant shall prepare and submit a report to the Owner of the findings prior to start of demolition.

During demolition operations, the seismologist or other approved qualified vibration specialist may require that the Specialty Design Consultant check specific structures/features that are identified in the monitoring plan for deformations such as cracks and settlement in real time based on information provided by the vibration monitoring contractor.

The Specialty Design Consultant also performs post-condition surveys of the structures/features that are identified in the monitoring plan at the completion of all demolition-related activities to record any changes to the conditions of the structures/features.

1.1.2.4 Land Surveyor

The land surveyor establishes the existing topographic, layout, and as-built surveys of the existing structures/features that are shown on the monitoring plan prior to any demolition-related activities. The land surveyor also maintains monitoring as directed by the OWNER and conducts a final survey at the end of the demolition project to document any changes to these structures/features or topography that may be the result of the vibration-related work.

1.2 QUALITY ASSURANCE

1.2.1 Sub-Contractor Qualifications

The Contractor shall employ the services of a qualified seismologist or other approved qualified vibration specialist with verifiable previous experience of a minimum of three projects within the last five years in the installation of vibration monitoring equipment, planning, supervising or performing the required vibration-monitoring operations and interpretation of vibration data.

The Contractor shall employ the services of a qualified vibration monitoring firm or individual with verifiable previous experience of a minimum of three projects within the last five years in the installation of vibration monitoring equipment, planning, supervising or performing the required vibration-monitoring operations and interpretation of vibration data.

The Contractor shall employ the services of a qualified vibration monitoring firm or individual with verifiable previous experience of a minimum of three projects within the last five years in performing the required vibration-monitoring field operations during demolition.

The Contractor shall employ the services of a Specialty Design Consultant who shall be a Registered Professional Civil or Structural Design Consultant in the State of Texas and is a qualified inspector with the competence to observe and inspect materials, installation, and erection of components and connections that require special expertise to ensure compliance with approved demolition documents and referenced standards. The Specialty Design Consultant shall have verifiable previous experience of a minimum of three similar projects within the last five years.

The Contractor shall employ the services of a Registered Professional Land Surveyor in the State of Texas with verifiable previous experience of a minimum of three projects within the last five years in performing land surveying.

1.3 SUBMITTALS

Submit the following in accordance with Section 01 33 00 SUBMITTAL

PROCEDURES:

SD-01 Pre-Demolition Submittals

Demolition Vibration Management Plan

Pre-Demolition Report

Mitigation Measures

Pre-Demolition Survey

Vibration Monitoring Plan

SD-03 Product Data

PPV Measurement Data

Demolition Vibration Monitoring Notifications

Photographic Updates

Changes In The Physical Features Of Structures

SD-06 Test Reports

Vibration Monitoring Report

SD-07 Certificates

Qualifications of the Vibration-Monitoring Contractor

Qualification of the Specialist Design Consultant

Qualification of the Land Surveyor

Qualifications of the Seismologist or other qualified vibration specialist

SD-09 Manufacturer's Field Reports

Deviations from the Demolition Vibration Monitoring Plan

SD-11 Closeout Submittals

Vibration Monitoring Final Report

1.3.1 Pre-demolition

The Contractor shall submit the following:

a. A demolition vibration management plan that includes

(1) Qualifications of the seismologist or other approved qualified vibration specialist

(2) Qualifications of the vibration-monitoring Contractor

(3) Qualifications of the Specialty Design Consultant

(4) Qualifications of the land surveyor

b. A general notice prepared by the seismologist or other approved qualified vibration specialist for at least one (1) public pre-demolition consultation with property owners and occupants within the zone of influence advising of the possibility of demolition vibrations.

c. A pre-demolition report that shall include the following:

(1) Results of the pre-demolition condition survey including all records, reports, video, photographs, and recommendations for maximum peak particle velocity (PPV) threshold limits and warning limits in any of the three mutually perpendicular components of particle velocity for all structures/features surveyed that might be affected by demolition-induced vibrations. A threshold limit should be recommended for each structure/feature in the zone of influence.

(2) A vibration-monitoring plan prepared by the seismologist or other qualified vibration specialist which includes the locations and types of the seismic monitoring sensors and equipment.

(3) Pre-demolition topographical survey of all structures/features within the specified zone of influence and along the project limits, as determined by the seismologist or other qualified vibration specialist.

d. The Contractor shall identify and submit for review by the Owner mitigation measures to reduce the effects of demolition related vibrations within the zone of influence. The Contractor shall submit for review by the Owner a remedial action plan for the structures/features that are likely to be so affected.

1.3.2 During Demolition

The Contractor shall submit the following:

a. PPV measurement data of the monitoring activities to the Owner at the end of each workday when vibration inducing activities are conducted.

b. A report summarizing when demolition vibration monitoring notifications were sent to site and project managers.

c. Changes in the Changes in the physical features of the structures that are identified in the monitoring plan throughout the entire project duration and as determined by the seismologist or other qualified vibration specialist.

d. Monthly photographic updates during the entire project duration.

d. A monthly report that documents any deviations from the demolition vibration monitoring plan, and explains the reasons for the deviations, and consequences and outcomes of those deviations.

1.3.3 Post-Demolition

The Contractor shall submit a vibration monitoring final report that shall include the following:

a. All vibration monitoring data associated with the specific demolition activities that were observed in the field.

b. Results of the post-demolition condition surveys including all records, reports, video, and photographs for items that may have been affected by demolition-induced vibrations and narratives on comparative pre-demolition condition survey information.

c. Post-demolition topographical survey data of all structures/features potentially impacted by the demolition and that were recommended by the seismologist, and written statements of how this data compare to the pre-demolition topographic survey data.

PART 2 PRODUCTS

Not used.

PART 3 EXECUTION

3.1 DEMOLITION REQUIREMENTS

3.1.1 Pre-Demolition Requirements

The Contractor, through the seismologist or other qualified vibration specialist shall perform a documented pre-demolition condition survey as part of determining vibration or settlement effects on any existing structures/features within the influence zone of the proposed demolition activities.

The seismologist or other qualified vibration specialist shall determine the predicted and maximum allowable PPV threshold values for the structures/features defined in the vibration monitoring plan based on the analysis of data gathered during the pre-demolition condition survey.

The seismologist or other qualified vibration specialist shall establish the vibration zone of influence. A vibration zone of influence is defined as the area of land within or adjacent to a demolition site, including any structures/features, that potentially may be affected by vibrations emanating from a demolition activity where the PPV at the location where measured, is equal to or greater than the limiting PPV threshold value as defined in Section 1.3.1C) of this document.

3.1.1.1 Pre-demolition Survey

The Contractor, through the seismologist or other qualified vibration specialist shall perform a documented pre-demolition condition survey as part of determining vibration or settlement effects on any existing structures/features within the influence zone of the proposed demolition activities.

The pre-demolition condition survey shall include tape-recorded observations; video and still photography and sketches as needed to fully describe the existing condition of each structure/feature potentially affected by any demolition induced vibrations, including the interior and exterior of any building structures. Crack gauges may be used to document existing cracks. Sizes (length and width) of existing cracks in structures/features shall be recorded and documented.

The Contractor, through the seismologist or other qualified vibration specialist shall use site-specific information about on-site and sub-surface soils to perform a screening assessment that shall be used to determine the distances from the vibration sources to target features within the influence zones. This pre-demolition condition survey shall be completed at least 30 days prior to the start of onsite activities and a pre-demolition survey report shall be submitted to the Owner within seven (7 ) days after completion.

The Contractor must perform pre-demolition surveys of critical physical features of all structures within the specified zones of vibration influence and of any other structures that are located along the project limits at the direction of the seismologist or other approved qualified vibration specialist.

A report shall be prepared for each feature identified by the seismologist or other approved qualified vibration specialist. The report shall include all of the recorded observations.

3.1.1.2 Baseline Ground Motions (Existing, Pre-demolition ground borne vibration levels)

The data that is collected shall include baseline ground motions caused by non-demolition vibration sources near structures/features that are shown in the monitoring plan.

Where predicted PPVs are anticipated to exceed the determined threshold, the seismologist or other qualified vibration specialist shall establish protocols for the structures/features that are expected to be negatively affected by the demolition-related vibrations as shown in the monitoring plan.

3.1.1.3 Specifications for Proposed Vibration Monitoring Equipment

Equipment for measuring demolition-induced ground-borne vibration shall at a minimum measure peak particle velocity, be tri-axial 3-channel (3 seismic channels) units capable of digitally storing collected data an sending out warning and stop work notifications via text message.

Equipment shall be capable of printing ground motion time histories and summaries of peak motion intensities, frequencies and USBM R18507 PPV-frequency plots. Printed report records must also include date, time of recording, operator name, instrument number and date of last calibration.

Other required system features:

a. Instruments must have certifications of factory- or equivalent calibrations within the past 12 months.

b. Instruments shall have a flat frequency response between 2 and 250 Hz for particle velocity.

c. The digitizing sampling rate for peak particle velocity measurements shall be at least 1,024 samples per second.

d. Seismographs shall be capable of performing a self-test of velocity transducers and printed event records shall indicate whether or not the sensor test was successful.

e. Seismographs used for compliance monitoring shall be capable of recording particle velocity from 0.01 to 5.0 in/sec.

f. Systems shall be capable of providing printed event reports that include all peak measurements, frequencies and complete waveform plots.

At a minimum, the monitors shall employ a two-tiered text messaging notification system so work can be paused or stopped before measured levels reach damage thresholds.

g. Seismographs shall have adequate memory to digitally record the entire duration of the demolition-induced motion. The minimum event recording time shall be three seconds.

h. All seismograph software systems-shall be capable of saving back-up copies of all event files on USB flash drives or portable hard drives or provided on a cloud accessible network and copies shall be furnished to the Owner.

i. The Contractor shall provide the seismograph reporting software to the Owner with the first submittal of the vibration measurement records.

3.1.2 During Demolition Requirements

3.1.2.1 Vibration Monitoring

Maintaining ground vibration within the limits imposed under this contract is critical to the success of this project. To assure satisfactory results for data acquisition, the collection of these data must be conducted under the supervision of a qualified seismologist or vibration specialist.

The vibration monitoring contractor and all persons performing monitoring work shall be an independent third party.

Vibrations shall be monitored at appropriate locations throughout the project. Vibration measured in peak particle velocity in inches per second shall be recorded at the monitoring locations. Monitoring locations shall be determined by the seismologist or other approved qualified vibration specialist within the guidelines in 3.1.2.2 below and approved by the Owner.

Each monitoring location shall be a secure, marked and surveyed position and shall remain at the same position. The Contractor may elect at the Contractor's expense to provide additional instrumentation at additional monitoring locations for any purpose.

Vibration monitors shall run continuously during the duration of the project's activities at the site, and readings on each seismograph shall be checked at the intervals recommended by the seismologist or other qualified vibration measurement specialist. See Section 3.1.2.2 for additional information.

The Contractor shall provide and maintain temporary weather protection and remote power and communication capabilities as necessary for all vibration monitoring activity.

Monitor ground crack and install monitors to monitor crack width and changes during demolition (i.e. crack growth) and notify Owner.

3.1.2.2 Vibration Control

The seismologist or other approved qualified vibration specialist shall place at least two (2) seismographs at structures/features of concern (or as recommended and approved by the OWNER) to measure and record ground movements during demolition. The seismologist or other approved qualified vibration specialist shall provide qualified personnel capable of setting up instruments at designated locations to accurately record data, deploy the instruments, and operate, gather, and analyze the vibration data. The seismologist or other approved qualified vibration specialist shall use the collected data to control future demolition vibration so as not to exceed the limits established in these specifications. The instrumentation shall record three orthogonal components (vertical, radial and transverse) of particle velocity direction. The PPV for compliance purposes is the highest measurement made in any of the three measured directions. The instrument records shall consist of instrument readings identified by instrument number; the location of instruments; the date, time and location of the measurements; and the peak particle velocity and dominant frequency it occurred in.

Demolition activities shall be controlled in such a manner that the intensity of ground motion at the nearest existing structures/feature shall be limited to a peak particle velocity as set out in Section 1.3.1.C above or in accordance with Federal, State or local codes and regulations, whichever is more stringent.

3.1.2.3 Immediate Threshold Adherence

The Owner shall be notified immediately when the intensity of measured ground motions (PPV) exceed specified warning levels. When the PPV threshold limit is exceeded one time or warning levels are exceeded more than three times at any type of structure/feature, the Contractor shall submit a revised demolition plan to the Owner that outlines specific measures that will be applied to bring ground motion levels into compliance within specified limits. The Contractor shall submit a printed copy of the monitoring records showing PPV values. A digital copy of the monitoring event records on a CD-ROM disk or provided on a cloud accessible network shall also be submitted.

3.1.2.4 Reporting

The Contractor shall provide results of the testing to the Owner at the end of each workday when vibration inducing…