Addenda 02 _20154_PADR.pdf

518 Broad Street, Suite 200 St Joseph, Michigan 49085 269 932 4502

ADDENDA #2

Date: May 25, 2023

Project: Port Austin State Harbor: Contract 1 – Breakwater Extension Project

State File No.: File No. 751/20154.BDWR2

Owner: State of Michigan – DNR (Contracting Agency: DTMB)

This following are changes, eliminations and/or clarifications to project plans and specifications, and shall be considered by the contractor in their estimate. All of these items shall be considered as part of the contract documents.

Additional Project Supplemental Information

1. None

Project Plan and Specification Updates

1. Revised MICHSPEC: Section 00300 – Bid Summary & Section 00500 - 2

2. Revised Technical Specification: Section 35 42 37 & Section 35 20 23

3. Revised Contract Drawing: CM-1.02

Questions and Clarifications Q1: Can time be added to the required substantial completion date to allow for a longer marine construction duration in 2024?

A1: The required project Substantial Completion Date has been extended to June 15, 2024 with final completion by June 30, 2024. These dates have been updated on the attached revised MICHSPEC pages.

Q2: Please define the required extents of the survey area and survey method.

A2: The pre- and post-dredge survey area shall include the entire existing and proposed USACE navigation channel areas lakeward of the centerline of the western breakwater, Drawing Sheet CM-1.02 has been revised to show these limits. All surveying shall be performed using Single Beam methods with 50’ maximum survey cross-section spacing. Surveys shall be performed in reference to the NAD83, MI State Plane, MI South Zone, International Feet horizontally and IGLD85 vertically to match the Contract Drawing datums. Survey deliverable to be a .PDF format drawing and shall be stamped by a licensed surveyor or professional engineer. Contractor shall also provide the PSC with .XYZ format survey data for reference.

Q3: Specification Section 01 00 00 subsection 02 21 00 requires a license registered land surveyor be employed for layout. Can this layout be verified by a hydrographer with a professional engineering license? Can this surveyor be directly employed by the Contractor?

A3: Yes, layout can be overseen/verified by a Professional Engineer in place of a Professional Surveyor. This surveyor can be a direct employee of the Contractor as long as the work is stamped by a Michigan licensed Professional Engineer or Professional Surveyor.

Q4: What is the expected timeframe for USACE approval of the post dredge survey noted in Sheet Note #6 on CM-1.02?

A4: The expected timeframe for USACE review is within 1-week of submittal of the post-dredge survey.

Q5: Will the Contractor be responsible for dredging any area not within project depth inside the existing navigation channel or any area outside of the shaded dredge area?

A5: The contractor will not be responsible for dredging within the existing navigation channel to establish project depths. The only dredging that will be required within the existing navigation channel will be the dredging of side slope areas adjacent to the proposed dredging area to prevent any areas within the existing channel that around above project depth from sluffing off into the proposed dredge area. The shaded dredge area is the area of anticipated dredging within the proposed channel expansion area.

Dredging outside of this shaded area, but within the proposed expansion area only, may be required pending the existing conditions identified in the pre-dredge survey. Bids shall be based upon dredging within the proposed channel expansion area up to the estimated volume indicated on the plans.

Q6: The USACE Detroit District Stone Source list appears to be very outdated. USACE has stopped maintaining this list and there are several stone sources with USACE approved stone or stone meeting the quality requirements in Michigan that are not on this list. Can you remove the requirement that only listed sources be used as basis of bid as long as source meets quality requirements?

A6: Bids should be based upon sources shown on the provided list. If the Contractor bases their bid on alternate sources, the Contractor must assume the risk of the alternate source meeting the testing requirements. If alternate sources do not meet the testing requirements, the Contractor will be required to provide armor stone from a listed source, or source meeting the requirements, for their submitted bid pricing.

Q7: Per Specification Section 35 42 37, “Expansive breakdown in Ethylene Glycol” and “Methylene Blue

Absorption” are not typically tests required by USACE or performed by stone suppliers. Can these test requirements be removed?

A7: Specification Section 35 42 37 has been revised to remove the requirements of these tests.

Q8: Specification Section 35 42 37 1.3C 3 requires quarry lab tests within the last 24 months. USACE allows for test results within the last 5 years for this approval in their breakwall specifications on the Great Lakes. Can this be changed to match USACE requirements? If so will those test results suffice for the requirements in 1.3 B for the testing lab portion?

A8: The timeline of applicable testing has been updated to 5 years in the attached revised Specification 35 42 37 as long as tests are performed in the area of the quarry that the proposed stone is to come from.

Labrotory testing within 5 years of the applicable area would meet the requirements of Section 1.3 B of this specification as long as the sample source stones meet the sizing requirements listed in this section.

Q9: Is the 50-ft test section a requirement? Is it intended to start at the tie in to the existing breakwall and run through the existing cells?

A9: The test section is required as indicated in Specification Section 35 42 37. Following review of the test section and correction of any deficiencies, it can be incorporated into the work. The intent is for the test section to begin at CP4 and extend along the centerline towards CP3, as shown on Sheet CM-3.01

Q10: Can a turbidity curtain moon pool that is attached to and moves with the dredging barge be substituted for the anchored curtain surrounding the entire area?

A10: A moon pool type enclosure surrounding the area of active dredging would be acceptable.

Q11: Specifications for steel pile have requirements for pile hammers. Plans show a drilled 20” hole and pile set in grout. Is it expected that a pile hammer will be utilized for installation?

A11: No, pile to be predrilled and grouted per Detail 1 on Sheet CM-5.01.

Q12: MICHSPEC Section 00100 Article 16.2, Mobilization is capped at 4% of the base bid. Does this apply?

A12: Pay Item 01 00 00.01 is for Mobilization and General Conditions, the mobilization portion of that item cannot exceed 4% on the post-bid bid breakdown. Total of Item 01 00 00.01 can exceed 4% due to the General Conditions portions included if that pay item.

Q13: Regarding Detail 1 on sheet CM-5.01 – Is the requirement for pile tip elevation set at el. 555 with an 8-ft core from the bottom of lake? Or is the requirement an 8-ft core into rock/sandstone not including the overburden?

A13: The pile tip to be set at Elev. 555 which results in a depth from existing bottom of around 8’.

Q14: Will ASTM D5312 and ASTM D6473 tests be acceptable alternate testing methods for ASTM C666 and

C127?

A14: Yes, specification Section 35 42 37 has been revised to include these methods in the allowable testing methods.

Q15: Is the core stone subject to the same laboratory testing requirements as the Armor and Subarmor layers?

A15: Pre-production laboratory testing does not apply to the core stone gradation.

Q16: Can Type 1L be substituted for the specified Type 2 cement given the recent transition to Type 1L due to lower carbon footprint?

A16: Yes, Type 1L concrete would be accepted in place of Type 2 cement for this project.

Q17: Will comparable MDOT MTM testing methods be accepted for the laboratory testing listed in

Specification Section 35 49 29.

A17: MDOT MTM testing methods will be accepted if the referenced test is deemed applicable to the required

ASTM testing procedure listed in the specification by the PSC.

Q18: If winter ice conditions cause a delay in Spring construction, will weather delays be considered in substantial completion and liquidated damages decisions?

A18: Ice conditions that prevent marine construction at the project site beyond April 15 will be considered in substantial completion decisions.

Q19: We have been informed by stone suppliers that the Integrity Drop Test in Specification Section 35 42 37 will not be performed at their facility due to safety concerns. Can these test requirements be waived?

A19: The Integrity drop test requirements can be waived if the facility can cite a location where their stone has been used as armor stone for a minimum of 5 years without evidence of breakage or degradation.

Cited location stone shall be of similar size range with similar weather and wave climates.

Q20: Specification 35 42 37 requires a test section, our assumption for this section is that all of the core stone would be placed, then all of the subarmor would be placed to surcharge the entire length for potential settlement prior to placing the 50 ft test section for review and approval and/or adjustments and modification. Is this a correct assumption?

A20: Means and methods of construction shall be per the Contractor’s preference to achieve the final installation tolerances. Construction in advance of completed stone protection is at the Contractor’s risk per the Specifications.

Q21: Can the installation tolerances of Specification 35 42 37 be changes to match the following typical USACE tolerances from the neatline?

Bedding: -6” to +6” Subarmor: -12” to +9” Armor: -18” to +12” A21: Installation tolerances shall be as described in Specification 35 42 37.

Q22: Regarding stone sources, MICHSPEC Section 00100, Article 14.9 states that the Bidder and all

Subcontractors and Suppliers shall use Michigan-made products whenever possible where price, quality and performance are equal to or better than non-Michigan products. Will out of State material be rejected?

A22: No, out of State stone materials will not be rejected if they provide a cost and/or procurement advantage for the State.

Q23: None of the quarries that we have contacted have ever completed a compressive strength test on their stone products. Could this requirement be waived?

A23: The Unconfined Compressive Strength test requirements can be waived if the facility can cite a location where their stone has been used as armor stone for a minimum of 5 years without evidence of breakage or degradation. Cited location stone shall be of similar size range with similar weather and wave climates.

Q24: Due to pending question responses and time required to work with potential suppliers, could the bid date be extended by 1 week to June 14, 2023?

A24: To allow for more time to coordinate with suppliers, the bid due date will be revised to June 14, 2023 as this will not affect the future contract award date. The question deadline is not being extended. This revision is shown on the attached revised MICHSPEC forms.

Addendum #1 Attachments Attachment 1: Revised MICHSPEC Section 00300 – Bid Summary & Section 00500 - 2 Attachment 2: Revised Technical Specification Section 35 42 37 and Section 35 20 23 Attachment 3: Revised Contract Drawing CM-1.02

STATE OF MICHIGAN (OWNER AND CONTRACTOR) BID SUMMARY (Revised via Addendum #2)

MICHSPEC DTMB 00300 − BID SUMMARY (R 03/22)

SECTION 00300 − BID SUMMARY

DTMB-0401M (R 03/21)

BID SUMMARY

DEPARTMENT OF TECHNOLOGY, MANAGEMENT AND BUDGET

STATE FACILITIES ADMINISTRATION

DESIGN AND CONSTRUCTION DIVISION

3111 W. St. Joseph Street Lansing, Michigan 48917

Bids must be submitted electronically through the SIGMA VSS website at https://sigma.michigan.gov/webapp/PRDVSS2X1/AltSelfService

FILE NUMBER

751/20154.BDW

FUNDING CODE

DEPARTMENT/AGENCY

Natural Resources

CONTRACT TIME(S)

Sub. Comp. by May 1, 2024 June 15, 2024 (Rev. via Adden. #2)

PROJECT NAME

Port Austin State Harbor, Breakwater Extension – Contract 1

LOCATION

Port Austin, MI

BID OPENING DATE

June 7, 2023 June 14, 2023 at 2:00 pm ET

FOR AN EXAMINATION OF THE SITE CONTACT:

Brian Dunn, (989) 738-8663

SEE SECTION 00100 INSTRUCTIONS TO BIDDERS AND SECTION 00700 GENERAL CONDITIONS PROVIDED WITH THE BIDDING DOCUMENTS.

BID: WE PROPOSE TO FURNISH, PERFORM AND COMPLETE THE ENTIRE WORK IN ACCORDANCE WITH THE CONTRACT DOCUMENTS IN

CONSIDERATION OF THE BID PRICE (S) STATED BELOW.

FIRM NAME AND COMPLETE ADDRESS TELEPHONE NUMBER and E-MAIL ADDRESS

□ Qualified Disabled Veteran

SIGMA VENDOR NUMBER

(protected information required for processing payments)

BIDDER'S SIGNATURE AND TITLE DATE

WITNESS' SIGNATURE DATE

By signing this bid above, bidder certifies their enclosed Qualified Disabled Veteran and Michigan-Based Business Certifications.

BASE BID FROM BID SCHEDULE (Include specified Allowances):

____________________________________________________________________________Dollars $____________________ (use words) (in figures)

Alternate1: (Add/Subtract) ______________________________________________________ Dollars $ ____________________ (use words) (in figures)

Alternate 2: (Add/Subtract) ______________________________________________________Dollars $ ____________________ (use words) (in figures)

Alternate 3: (Add/Subtract) ______________________________________________________Dollars $ ____________________ (use words) (in figures)

A PERFORMANCE BOND AND A PAYMENT BOND ARE REQUIRED FOR ALL BIDS OVER $50,000.00. EACH BID MUST BE ACCOMPANIED BY A FIVE (5) PERCENT BID GUARANTEE. BUILDERS RISK INSURANCE IS REQUIRED TO BE PROVIDED BY THE CONTRACTOR UNLESS

OTHERWISE INDICATED IN THE BID DOCUMENTS.

BIDDERS ARE ALSO CAUTIONED TO FAMILIARIZE THEMSELVES WITH ALL OF THE OTHER CONDITIONS OF THE CONTRACT.

Project Scope of Work:

Furnish and install a 160 LF armor stone extension to the eastern detached armor stone breakwater at the entrance to Port Austin State Harbor. Furnish and install a replacement navigation marker base, relocated existing navigation marker, provide isolated dredging and spoils removal.

https://sigma.michigan.gov/webapp/PRDVSS2X1/AltSelfService

STATE OF MICHIGAN (OWNER AND CONTRACTOR) AGREEMENT (Revised via Addendum #2)

MICHSPEC DTMB 00500 − 2 (R 03/22)

2.2.6. Section 00030 Advertisement; Section 00100

Instructions to Bidders, including Attachment A−Bidder's Check List, and Section 00210 Information for Bidders.

2.2.7. Section 00610 Performance Bond and Section

00620 Payment Bond, fully executed by the Contractor and the sureties, each enclosing separate evidence of Power of Attorney.

2.2.8. The Contractor's Section 00300 Bid Summary and

Bid Form (with attachments) and Section 00320 Non-collusion Affidavit (including any revisions delivered after Bid opening).

2.2.9. The following Contractor's Qualification Submittals

(post-Bid opening:) _____________________________________

2.3. Contract Documents that will be issued after the date the Owner executes this Section 00500 Agreement consist of:

2.3.1. Change Orders and Change Authorizations signed

as provided in the Contract Documents.

2.3.2. Notice of Award and Notice to Proceed.

2.4. There are no Contract Documents other than those listed

or designated in this Article or added through Section 00520 Attachment A to the Agreement. The Contract Documents may be modified, as provided in Section 00700 General Conditions.

ARTICLE 3 CONTRACT PRICE

3.1. The Contractor will furnish and perform the Work and

accept in full payment the Contract Price of __________________ ______________________________ Dollars ($_____________).

The Contract Price includes only those Alternates accepted by the Owner, as itemized in the Notice of Award.

3.2. The Contract will include those Change Order prices (bid on Section 00300 Bid Form) accepted by the Owner when the Owner issues the Notice to Proceed or by Change Authorization.

3.3. Payments to the Contractor will be made based on the

prices stated on the Contractor's Section 00300 Bid Form, subject to the terms and conditions of the Contract Documents.

ARTICLE 4 CONTRACT TIME; LIQUIDATED DAMAGES

4.1. The periods allowed for completion of the Work, or a

designated part of the Work, will be as follows:

4.1.1. The entire Work will be substantially complete in

accordance with the requirements of the Contract Documents: by May 1, 2024 June 15, 2024 @ 5 pm EST.

4.1.2. If separable parts of the Work shall be completed before the period allowed for Substantial Completion of the entire Work, the Contract Times for those parts of the Work will be as specified in Section 00520 Attachment A to Agreement, and as may be supplemented in the Specifications.

4.1.3. The entire Work will be complete and ready for final

payment as specified in the Contract Documents: by May 15, 2024 @ 5 pm EST June 30, 2024 @ 5 pm EST.

4.2. The Owner and Contractor recognize that the Contract

Times are of the essence of the Contract and that the Owner will suffer costs and damages if the Work is not completed within the Contract Times, including any extensions in Contract Time authorized by Change Orders. Therefore, liquidated damages (in the amounts specified in paragraphs 4.2.3 through 4.2.5) will apply if the Work is not completed within the limits of the Contract Times.

Liquidated damages are not a penalty, are cumulative and represent a reasonable estimate of the Owner's extra costs and damages, which are difficult to estimate with accuracy in advance.

4.2.1. Accordingly, if the Contractor fails, neglects, or refuses to complete all or any designated part of the Work within the specified Contract Time, the Contractor agrees to pay to the Owner liquidated damages and to allow, at the appropriate time, a corresponding adjustment in Contract Price.

4.2.2. If under the procedures of paragraph 4.3, the Owner is justified in withholding liquidated damages due to or in anticipation of late completion, the Contractor agrees to allow the Owner to deduct liquidated damages from Requests for Payment.

4.2.3. Liquidated damages for each Calendar Day that expires

after the Contract Time specified in paragraph 4.1.1 for Substantial

Completion of the entire Work − until the Work is substantially complete − shall be in the amount of Five Hundred Dollars and No/Cents ($500.00)

4.2.4. Liquidated damages for each Calendar Day that expires

after each of the Contract Times designated in Section 00520

Attachment A to the Agreement − until each such part of the Work is sufficiently complete − shall be in the amounts stated in Section 00520 Attachment A to the Agreement.

4.2.5. Liquidated damages for each Calendar Day after

Substantial Completion of the entire Work that expires after the Contract Time specified in paragraph 4.1.3 for completion and readiness for final payment − until the entire Work is complete and ready for final payment − shall be in the amount of Five Hundred Dollars and No/Cents ($500.00)

Assessment and/or Withholding of Liquidated Damages

4.3. If the Contractor fails to complete the Work, or a specified part of the Work, within the corresponding Contract Time, or if at any time after the Work is eighty percent (80%) in place, the Contractor does not prosecute the balance of the Work with the diligence required to comply with the Contract Times, the Contractor shall be requested to submit a schedule recovery plan acceptable to the Owner. The Contractor’s schedule recovery plan shall describe the cause of schedule slippage or delayed progress and the actions proposed and taken to recover schedule. In addition, to the extent that the Contractor believes that an extension in Contract Time is justified, the recovery plan shall include a request for an appropriate extension in Contract Time.

4.3.1. Within fifteen (15) Calendar Days after the Contractor receives any such request, the Contractor shall meet with the Owner and present the Contractor’s written schedule recovery plan. If, upon evaluation of the Contractors’ schedule recovery plan, and after consultation with the Professional, the Owner, in its sole discretion, determines that there is sufficient cause to withhold liquidated damages, the Owner may deduct from Requests for

BREAKWATER EXTENSION

35 42 37 - 1

BREAKWATER EXTENSION SECTION 35 42 37 (REVISED VIA ADDENDUM #2)

PART 1 – GENERAL

1.1 SUMMARY

A. The work to be done under this section includes, but is not necessarily limited to, furnishing all labor, materials, equipment, and services necessary for and reasonably incidental to property construct the breakwater extension as shown on the drawing and specified herein.

1.2 QUALITY ASSURANCE

A. Comply with standards specified in this Section.

B. Use adequate numbers of skilled workmen who are thoroughly trained and experienced in the necessary crafts and who are completely familiar with the specified requirements and the methods needed for proper performance of the work of this section.

C. Establish quality control plan to perform inspection and tests of items of work, including that of Subcontractors, to ensure conformance to Contract Documents with respect to materials, workmanship, finish, functional performance, and identification.

D. Controls must cover construction operations including safety requirements and should be keyed to proposed construction sequence. Control must include three phases of inspection for features of work. Contractor is solely responsible for site safety and shall provide all appropriate measures to ensure that persons in or near the construction area are protected.

E. Preparatory inspection: Preform prior to beginning any work. Include review of contract requirements.

1. Check to ensure materials and equipment is in place to provide required control testing.

2. Examine work area to verify existing conditions and verify any preliminary work has been completed.

3. Examine materials and equipment to ensure they conform to approved submittals and that materials and equipment are on hand.

F. Initial inspection: Perform as soon as work begins on representative portion of particular feature of work and include examination of quality of workmanship as well as review of control testing for compliance with Contract Documents. Contractor shall construct in-place a 50’ test section of the shoreline protection, in accordance with Section 3.3 herein, for review and approval by the Professional. This section will serve as a baseline of acceptance to which the remainder of the shoreline protection will be compared.

G. Follow-up inspections: Perform daily to ensure continuing compliance with Contract

Documents, including control testing, until completion of particular feature of work.

35 42 37 - 2

H. Quality control staff: Contractor’s project supervisory staff may be used for quality control supplemented as necessary be additional personnel for surveillance, special technicians, or testing facilities to provide capability for controls required by Contract Documents.

I. Quality control plan: Includes written procedures, instructions, and reports to be used and must include as minimum:

1. Quality control organization.

2. Number and qualifications of personnel to be used for this purpose.

3. Authority and responsibilities of quality control personnel.

4. Methods of quality control including that for Subcontractor’s work.

5. Test methods, including specific names of qualified testing laboratory to be used.

6. Method of documenting quality control operations, inspections and testing.

7. Copy of letter of direction to Contractor’s representative responsible for quality control, outlining duties, and responsibilities and signed by Contractor.

J. Quality control meeting: After contract is awarded and before construction operations are started, meet with the Professional and discuss quality control requirements.

Meeting must develop mutual understanding relative to details of plan including forms to be used for recording quality control operations, inspections, and administration of plan. Submit quality control plan to the Professional as required for project submittals.

K. Recurring deficiencies: If recurring deficiencies in work indicate quality control system is not adequate, take corrective actions until work meets Contract Documents.

L. Quality Control management reports: Original copy of report must be kept available onsite for duration of project, then turned over to the Professional. First carbon copy of daily repairs must be presented to the Professional daily unless otherwise directed.

M. Codes and permits:

1. In addition, Contractor must comply with all pertinent codes and regulations, they must also comply with provisions of the U.S. Army Corps of Engineers and State of Michigan, EGLE issued permits. Permits are listed in and attached to the Project Specification Manual, Section 00210 Information for Bidders

1.3 TESTS AND INSPECTIONS

A. Testing must be provided by Contractor at no additional cost to the Owner. Provide name of testing laboratory for approval by Owner. Select samples for testing with concurrence of the Professional and testing laboratory. Conduct tests as specified below and adjust operation to provide material meeting Contract Documents.

35 42 37 - 3

B. All stone and aggregate must be tested for quality prior to the start of placement.

Inspection for cracks, fractures, seams, defects, and deterioration must be made by visual examination. Sampling must be as follows and additionally, if before or during the course of the quarry operations conditions are such that, in the Professional’s opinion, additional testing to ensure the quality of the production material may be required, the following action must be taken:

1. Test samples must be obtained by the Contractor at their own expense. Samples selected for testing must be representative of material formations in the quarry to be used or being used on the project. The Owner’s representative and testing lab representative must be present and approve the selection of all test samples before shipment. The Owner’s representative may elect to personally select all samples.

2. Where specified sizes are in excess of 2,000 pounds, stone for samples must weigh one (1) ton each. When specified sizes are less than 2,000 pounds, but larger than 500 pounds, individual rock samples must be the size of the largest stone specified, except that if the sources selected are capable of producing stone weighing 2,000 pounds or larger, the samples must weigh one (1) ton. In general, one (1) to three (3) stones representative of each stone grouping, as determined by the Professional from each quarry to be used, must be selected for testing.

Samples of stone groupings with a maximum size less than 500 pounds must contain at least two (2) stones representative of the higher limit of the stone weights specified. In addition, the sample must be representative of the gradation specified and the minimum weight of the total sample must be not less than 500 pounds.

C. Pre-production testing and submittals:

1. Test stone materials products during start-up operations at quarry for quality, weight and gradations to ensure compliance with Contract Documents. Three consecutive tests must pass requirements and be witnessed by the Professional prior to full production operations or shipment of material to project site. Set aside sample stones of each size for reference.

2. Furnish current quarry’s lab test sheets of have stone independently tested. Furnish name of testing lab for Owner’s approval for the following: (see material sampling) petrographic examination, bulk specific gravity, water absorption, abrasion, soundness, compressive strength, wetting and drying, freezing and total porosity, elastic moduli, direct shear, expansion, and others to determine material acceptability.

3. Quarry lab tests must be in accordance with these specifications and recently (within last 60 months) done in the specific area of the quarry the proposed stone is to come from. If no current tests are available from quarry of Contractor proposed to use stone sizes other than sizes indicated on Corps of Engineers quarry list, the Contractor must have independent lab tests done at no additional cost to Owner.

Quarry or lab must furnish certification that stone meets testing requirements for various stone size classifications as specified along with testing results.

35 42 37 - 4

4. All test must be performed in accordance with the applicable portion of the ASTM

C127, ASTM C295, ASTM C535, ASTM D653, ASTM D2664, ASTM D2845, ASTM

D2936, ASTM D2938, ASTM D3148, CRD C107, CRD C127, CRD C137, CRD

C144, CRD C145, CRD C148, H 44, RTH 101, RTH 102, RTH 103, RTH 106, RTH

107, RTH 108, RTH 109, RTH 110, RTH 111, RTH 112, RTH 115, RTH 201, RTH

202, RTH 203. All tests will be made by the testing lab and at the Contractor’s expense.

D. Laboratory testing must achieve the following requirements for acceptable product:

Test Required Value Test Method

Specific Gravity

>2.5

ASTM C127 or D6473

Water Adsorption

<2.0%

ASTM C127 or D6473

Sodium Sulfate Soundness

<12% loss (after 5 cycles)

ASTM C88

Freeze Thaw <0.5% loss (after 25 cycles)

ASTM C666 or D5312

Expansive Breakdown in Ethylene Gycol

<5% loss (after 15 days)

CRD C148

Methylene Blue Adsorption

<0.7%

Unconfined Compressive Strength

>15,000 psi

ASTM D2938

L A, Abrasion

<30% loss (after 1,000 revolutions)

ASTM C535

Block Integrity Drop Test (Armor Stone only)

<5%

See Paragraph

1.3 E.5

E. Production testing:

1. The Contractor must conduct production quality control test at quarry prior to shipment of materials to project site in uniform intervals throughout project duration.

2. Tests:

Stone Type of Test Minimum Size of Samples Minimum Number of Test

Armor Stone Visual Inspection Individual Stones All Stones Measurement Individual Stones 10% of all material Weight Verification Individual Stones 1.5% of all material

Mattress Stone Visual Inspection Individual Stones All Stones

35 42 37 - 5

(Subarmor) Measurement Individual Stones 10% of all material Weight Verification Individual Stones 1.5% of all material

Filter Bed Stone Gradation Test One (1) Ton One (1) for each 7,500 (Core) tons of material produced

3. Tests which do not pass are not counted as number of tests required. Increase test as necessary to maintain quality control during production and must be at Contractor’s expense.

4. Test descriptions:

a. Visual Inspections: Visually check of all stone over 1,100 lb size for elongation, cracks, deterioration, and other defects visible to naked eye on at least 2/3 of surface area of stone. Wet and reinspect five percent of stone checked for cracks for minute cracks to determine if they would be detrimental to stone quality and if additional inspections are necessary on all stone. Do not ship stones with cracks that are detrimental to long-lasting product.

b. Measurements:

1) Measure stone on 3 mutually perpendicular axis and compute weight. Record computed weights and measurements.

2) Weigh stones as indicated above plus only as necessary to verify questionable computed weights and record weight.

3) Stone selected for measurement must represent all sizes specified in order to verify conformance with specified weight limits.

4) Color code or mark armor stone for weights.

c. Load Test: Weigh and tabulate stone in manner approved by the Professional for comparison with specified gradation.

5. Stone Integrity Drop Test Breakage Index testing shall be as follow:

a. Subject and Area of Applicability: This standard is used to determine the percentage of stone loss from heavy gradings of quarried stone in a standard drop test, this percentage being described as the Drop Test Breakage Index.

b. Sample for Analysis: The sample will contain at least 50 pieces taken at random from above the Extreme Lower Class Limit (ELCL) weight of the grading class in question.

c. Equipment and Other Aids:

1) Suitable hydraulic grab (e.g., orange-peel type).

2) Weighing equipment, accurate to within 2 percent of the lightest piece to be weighed.

3) Bed of rocks of same grading as the sample to be tested.

4) Sufficient volume of crushed rock aggregates to give a 20-inch thick layer covering an area to support the bed of rocks.

d. Method of Working:

1) Execution: Determine the individual weights of the rock sample prior to the test. Prepare the bed of rocks by laying them out in a single compact layer on a 20-inch plus or minus 2-inch thick layer of

35 42 37 - 6 crushed rock aggregates. Subject each block in the test sample in turn to a drop of fall height 10 feet plus or minus 4 inches onto the bed of rocks. Record the results of each drop, such record to include the number and type of visible flaws in blocks and the number and type of blocks resulting.

2) Remove the block, or broken parts thereof, from the bed of rocks.

Set aside all resulting pieces whose weight is greater than the ELCL weight, or whose weight is assessed to be close to the ELCL weight, for further weighing. Clear all rock fragments from the bed of rocks, leaving clean surfaces prior to dropping the next block in the test sample.

3) Individually weigh each stone piece in the test sample heavier than the ELCL on completion of drop testing accurate to within 2 percent of the lightest piece to be weighed. Record the total weights in each weight fraction.

4) Retrieve the residual parent rock sample, above the ELCL, and repeat Steps 1-3 above. Results of the second drop shall be used for the basis of Step 5 below.

5) The test may be considered complete if after testing the first 30 stones the breakage index is 5% or less. If greater than 5%, the test should continue with the remaining stones. After 50 stones, the breakage index shall be 10% or less.

6) Calculation: Calculate the cumulative weight distribution curves for the sample prior to drop testing and after drop testing for all pieces heavier than the ELCL and calculate the median sample weight before testing (w50i) and after testing (W50f) Calculate the drop test breakage index, Id, as:

Id = [(W50i -W50f/W50i]*l00%

e. Report: The following data must be included in the report:

1) The Drop Test Breakage Index.

2) A reference to this standard.

3) A description of the sample, including its weight.

4) The source of the sample.

5) The date of the testing.

If agreed beforehand, the cumulative weight distributions before and after testing will be provided, and it is recommended that this be on a single graph.

F. At the project site visual inspections must be made of all materials for size, gradations, fractures, etc., to assure that handling during loading, transporting, unloading and placement does not cause damage to the materials and to assure they are placed in accordance with the requirements of this section. Any material broken, cracked, out of gradation or weight limitation or improperly placed in the work must be removed and replaced with new stones or corrected as directed by the Owner’s representative at no additional expense to the Owner.

1.4 CERTIFICATES OF COMPLIANCE

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A. Provide certificates demonstration proof of compliance of materials with Contract

B. Each certificate must be signed by an official authorized to certify on behalf of manufacturing company and must contain name and address of Contractor, project name and location, quantity and date or dates of shipment or delivery to which certificates apply.

C. Copies of laboratory test reports submitted with certificates must contain name and address of testing laboratory and date of dates of tests to which report applies.

D. Certification must not be construed as relieving Contractor from furnishing satisfactory material if, after tests are performed on selected samples, material is found not to meet specific requirements.

E. Service records must be presented by Contractor that include documentation to show stone has performed satisfactory in recent past on similar structures.

1.5 REFERENCE STANDARDS

A. Corps of Engineers Handbook for Concrete and Cement (CRD) and both corresponding

American Society for Testing and Material (ASTM) and Corps of Engineers Rock Testing Handbook (RTH) test numbers where existing.

1. CRD C107-87: Standard Method of Test of Specific Gravity, Absorption, and Unit

Weight of Coarse Aggregate and Rip-Rap.

2. CRD C127-85: Recommended Practice for Petrographic Examination of Aggregate for Concrete.

3. CRD C137-86: Standard Test Method of Soundness of Aggregates by use of

Sodium Sulfate/Magnesium Sulfate.

4. CRD C144-73(C): Method of Testing Stone Resistance to Freezing and Thawing.

5. CRD C145-87: Standard Method of Test for Resistance to Abrasion of Large Size Coarse Aggregate by use of Los Angles Machine.

6. CRD C148-69: Method of Testing Stone for Expansive Breakdown on Soaking in

Ethylene Glycol.

B. American Society of Testing and Materials (ASTM):

1. ASTM C127-88: Standard Test Method for Specific Gravity and Absorption of Coarse Aggregate.

2. ASTM C295-85: Standard Practice for Petrographic Examination of Aggregates for

Concrete.

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3. ASTM C535-89: Standard Test Method for Resistance to Degradation of Large-size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine.

4. ASTM D653-90: Standard Terminology Relating to Soil, Rock and Contained Fluids.

5. ASTM D2664-86: Standard Method for Triaxial Compressive Strength of Undrained Rock Core Specimens without Pore Pressure Measurements.

6. ASTM D2845-90: Standard Test Method for Laboratory Determination of Pulse

Velocities and Ultrasonic Elastic Constraints of Rock.

7. ASTM D2936-84: Standard Test Method for Direct Tensile Strength of Intact Rock Core Specimens.

8. ASTM D2938-86: Standard Test Method for Unconfined Compressive Strength of Intact Rock Core Specimens.

9. ASTM D3148: Standard Test Method for Elastic Moduli of Intact Rock Core Specimens in Uniaxial Compression.

C. U.S. Department of Commerce National Bureau of Standards Handbook:

1. H44 1982: Specifications of Tolerances and Other Technical Requirements for Commercial Weighing and Measuring Devices.

D. Corps of Engineers Rock Testing Handbook (RTH):

1. RTH 101-89: Standard Terminology Relating to Soil, Rock, and Contained Fluids.

2. RTH 102-80: Recommended Practice for Petrographic Examination of Rock Cores.

3. RTH 103-80: Preparation of Test Specimens.

4. RTH 106-80: Method for Determination of Water Content of a Rock Sample.

5. RTH 107-80: Standard Method of Test for Specific Gravity and Absorption of Rock.

6. RTH 108-89: Method of Determining Specific Gravity of Solids.

7. RTH 109-80: Method of Determining Effective (as received) and Dry Unit Weights and Total Porosity of Rock Cores.

8. RTH 110-89: Standard Method for Laboratory Determination of Pulse Velocities and Ultrasonic Elastic Constants of Rock.

9. RTH 111-89: Standard Method for Unconfined Compressive Strength of Intact Rock Core Specimens.

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10. RTH 112-89: Standard Test Method for Direct Tensile Strength of Intact Rock Core Specimens.

11. RTH 115-80: Standard Method of Test for Resistance to Abrasion of Rock by use of the Los Angeles Machine.

12. RTH 201-89: Elastic Moduli of Rock Core Specimens in Uniaxial Compression.

13. RTH 202-89: Standard Test Method for Triaxial Compressive Strength of Undrained Rock Core Specimens Without Pore Pressure Measurements.

14. RTH 203-80: Direct Shear Strength of Rock Core Specimens.

1.6 SUBMITTALS

A. Comply with the provisions of Division 1.

B. The Contractor shall submit the following:

1. Complete materials list of all items proposed to be furnished and installed under this section.

2. Specifications, certifications, source locations, quality test results, and other data required to demonstrate stone compliance with the specified requirements.

3. Material weight receipts for each load to confirm quantities

4. Contractor Surveys: During and post-construction as specified herein

4. Specified installation procedures with, when approved by the Professional, must become the basis for inspecting and accepting or rejecting actual installation procedures used on the work

1.7 PRODUCT HANDLING

A. Use all means necessary to protect the materials of this section before, during, and after installation and to protect the work and materials of all other trades.

B. The Contractor must protect existing utilities and must call “Miss Dig” prior to any excavation.

C. In the event of damage, immediately make all repairs and replacements necessary to the approval of the Professional and at no additional cost to the Owner.

PART 2 – PRODUCTS

2.1 MATERIAL SOURCES

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A. Bids should be based on obtaining armor stone from any of the entitled "USACE Detroit District – LRE Stone Source List" and obtaining stone within sizes and tonnages as indicated on this starter list. Bids should not be based on non-listed stone material sources.

Commercially active non-listed stone material sources will be considered for use only after award of a contract and only if approved. If the Contractor bases their bid on alternate sources, the Contractor must assume the risk of the alternate source meeting the testing requirements. If alternate sources do not meet the testing requirements, the Contractor will be required to provide armor stone from a listed source for their submitted bid pricing.

B. Nothing herein is to be construed as implying that sources listed herein are actually interested in or capable of producing or offering stone in the size, gradation, weights or quantities required or that transportation from the source to the project is available. The Contractor must verify each source selected for its capability to produce the quantity required of the quality, sizes, gradation or weights specified.

C. When stone materials are to be obtained from a listed source(s), the source(s) must be selected and the Professional notified at least fifteen (15) calendar days in advance of the time the material will be used in the work.

1. The Contractor must designate in writing a source or one combination of sources from which it proposes to furnish each type/size of stone materials. The Owner must also at this time be given in writing the specific areas, lifts and geologic units in the quarry or pit to be utilized along with current test data from quarry as per subparagraph 1.3.C.

G. Stone materials must be furnished from any of the above-listed sources, or subject to the conditions hereinafter stated, may be furnished from other sources. Commercially active non-listed sources will be considered for use only after award of a contract.

H. If after award of a contract the Contractor proposes to use a non-listed commercially active source(s) of material, the Contractor must submit the information and data described hereinafter to the Professional with a request for approval. The request for approval must include the proposed modification in the contract amount.

1. Commercially active non-listed sources must not be used unless the requested use of such source(s) is approved by the Professional in accordance with the applicable provisions of the specifications. As appropriate, the Contractor will adjust the applicable contract amount for the best interest of the Owner if the requested commercially active non-listed source(s) is approved for use.

2. Provide testing and site review documentation from approved testing laboratory as required by these specifications along with Contractors written request and submittal of full report with testing and recommendations.

3. Final approval must be by the Owner with recommendations of the Professional.

I. Once a non-listed source or combination of sources is selected, the Contractor must submit to the Owner in writing the name and location of the specific source or combination of sources to be used. Additional information including: (1) areas and lifts of the quarry or pit to be worked, (2) the specific geological strata or stratas to be utilized, (3) laboratory testing and (4) previous use records must be provided by the Contractor for review. Upon receipt

35 42 37 - 11 of this information, the Professional will inspect the selected nonlisted source to verify that it may contain some material that meets all requirements specified and warrants sampling and testing. Sampling, shipping and testing of materials from non-listed sources must be as follows:

1. The Contractor must furnish the testing lab a suitable sample(s) of the materials proposed to be furnished for testing and approval. Testing lab personnel must take samples. Stone and aggregate sample(s) must be furnished and delivered to the laboratory in adequate time for approval prior to delivery of such materials to the site of the work. Samples for acceptance testing must be provided as specified under subparagraph 1.3 Sampling, shipping and testing of sample(s) must be at the Contractor’s expense

2. Necessary testing required to evaluate one (1) proposed source or combination of sources which are not listed will be made at the expense of the Contractor. All testing will be in accordance with subparagraph U.C.

3. Provide adequate time to complete evaluation of stone material. The stated contract completion time will not be extended for sampling and testing from non-listed sources.

2.2 MATERIAL QUALITY

A. Stone must be of quality to insure permanence of structure in climate in which it is to be used. Selected granite, quartzite, rhyolite, taprock (basalt), limestone, and some dolomitic limestone will generally meet requirements of these specifications if suitable blasting and handling techniques are utilized.

1. Material must be durable, sound, free from detrimental cracks (including blast fractures), seams, and other defects which tend to increase deterioration from natural causes or cause breakage during handling or placing.

2. Material must be highly resistant to weathering and disintegration under freezing and thawing and wetting and weathering and wetting and drying conditions,

3. Inclusion of objectionable quantities of dirt, sand, clay, chert, and rock fines or other deleterious material will not be permitted.

B. Least dimension of any piece of Armor Stone must not be less than 1/3 of its greatest dimension. Armor stone must have angular faces that have fractured, split, sawed, or bedding lane surfaces.

C. Filter bed stone must consist of quarried stone or crushed gravel. If this stone is furnished from natural sources, demonstrate that material has been crushed and 75% of pieces have minimum of one fractured or split face.

C. The right is reserved to reject materials from certain localized areas, zones, strata, or channels of any source, when such materials are determined by the Professional to be unsuitable based upon quality requirements herein. Rejection of any or all material by the Professional must not be grounds for a time extension. Materials produced from a selected source(s) must meet all requirements specified.

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2.3 MATERIAL QUANTITY

A. Specific gravity of 2.69 (168 PCF) was used to compute stone sizes for each stone types.

Reference is made to Part 3 for data on conversion factors and recalculation of quantities. It may be necessary to redesign stone type sized for any source used having stone material whose specific gravity is not 2.69 +/- 5%.

1. All stone must have a minimum specific gravity of 2.50 and a maximum specific gravity of not more than 2.90 based on water having a unit weight of 62.4 pounds per cubic foot. Stone must have rough surfaces and edges.

B. Quantity determinations are contingent upon bulk specific gravity (saturated surface dry

(SSD)) of stone to be supplied. Therefore, before bidding, the Contractor must make an investigation to determine average specific gravity (SSD) of stone available at each quarry he proposes to utilize. If listed quarry which has been previously tested is to be used, new specific gravity tests may be waived with consent of the Professional. Tests must be performed in accordance with RTH 108.

2.4 GRADATION

A. Gradation limits are in-place requirements. Adjustment in production methods must be made as necessary to ensure final placed materials are within specified ranges.

C. Stone must have minimum and maximum size group ranges as follows and must be uniformly graded:

1. Armor Stone:

Provide color coding or markings to identify stones of the various sizes.

Weight Ranges

Minimum Weight Maximum Weight

8,500 Lbs to 14,500 Lbs

2. Mattress (Subarmor) Stone:

900 Lbs to 1,650 Lbs

3. Filter Bed (Core) Stone:

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0.22 Lbs to 6.7 Lbs

PART 3 - EXECUTION

3.1 QUALITY CONTROL AT QUARRY

A. Conduct quarry operations in manner producing stone conforming to requirements specified and may involve selective quarrying, handling, processing, blending, and loading as necessary. Stone in excess of 500 pounds each will not be accepted from material which was blasted from the face of the quarry during the period of 15 September to I May for quarries located above 43 north latitude and 1 October to 1 May for quarries located below 43 north latitude.

B. During contract period prior to and after materials are delivered to job site, visual inspections of stone materials may be performed by the Professional.

C. If the Professional during inspections suspects that stone quality, gradation or weights of stone being furnished are not as specified, supplemental sampling and testing by Contractor must be required.

D. Samples of delivered stone for testing and manner in which test is to be performed must be as required by the Professional.

E. This additional sampling and testing must be performed at Contractor's expense when test results indicate that materials do not meet specified requirements.

F. When test results indicate materials meet specified requirements an equitable adjustment for sampling and testing will be made in accordance with Contract Documents.

G. Before shipping to the site, individual armor stone pieces must be marked by color coding or numbering at quarry for its weight before shipping to site.

3.2 PLACEMENT

A. Place material uniformly within slope lines, grades, and tolerances as indicated on

Drawings.

B. Keep the Professional advised as to situations that may result in possible interruption of work.

C. Limitation of placement procedure:

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1. Construction in…