RFI_3_Combined_0003.pdf

SAGA 246315

SAGA PMIS 246315

GRIST MILL FOUNDATION REPAIR

RFI 3

Replace Paragraphs B. through L. of Section 01 20 50, Part 1.5, describing Bid Price Pay Items, with the following Pay Items:

Contract Line Item Number

Contract Line Item Title Estimated Quantity

Unit of Measure

Base Price

0010 Repair Concrete Foundation 1 LS

0020 Controlled Demolition of Concrete Encased Stone Wall

1 LS

0030 Reconstruct Concrete Encased Stone Wall with New Concrete Encasement

1 LS

0040 Stone Masonry Repairs 1 LS

0050 Brick Masonry Repairs 1 LS

Total Base Amount

Option/Additive Items

0060 A1-Surface Repairs to Stone Masonry Retaining Wall

1 LS

0070 A2-Replace Concrete Encasement with Exposed Stone to Match Existing Stone Walls of Mill

1 LS

Total Base Amount plus all Options/Additives

A. Contract Line Item Number 0010, Repair Concrete Foundation

1. This item consists of all labor, equipment, tools and materials necessary to complete the work associated with foundation repairs to the mill structure. This includes all or portions of Division 1 specifications as applicable, necessary mobilization, demobilization, general conditions, overhead, profit, incidentals, traffic control, water control, sediment control, removal of accumulated sediment and debris from the foundation void where concrete fill is to be placed, concrete placement (estimated quantity 5 cubic yards), cleanup and site restoration, and project records needed to complete repairs, per the design drawings and specifications, to the undermined southeast corner of the grist mill foundation.

2. Measurement for payment will be Lump Sum Price as stated on the Bid Form

3. Payment will be made at the contract Lump Sum Price.

B. Contract Line Item Number 0020, Controlled Demolition of Concrete Encased Stone Wall

1. This item consists of all labor, equipment, tools and materials necessary to complete the work associated with demolition of the concrete encasement on a segment of the mill structure. This includes all or portions of Division 1 specifications as applicable, necessary mobilization, demobilization, general conditions, overhead, profit, incidentals, traffic control, water control, sediment control, demolition of failing concrete (estimated quantity 20 square feet), cleanup and site restoration, and project records needed to prepare the existing concrete encasement for masonry and/or concrete repairs, per the design drawings and specifications, at the southeast corner of the grist mill structure.

2. Measurement for payment will be Lump Sum Price as stated on the Bid Form

3. Payment will be made at the contract Lump Sum Price.

C. Contract Line Item Number 0030, Reconstruct Concrete Encased Stone Wall with New Concrete Encasement.

1. This item consists of all labor, equipment, tools and materials necessary to complete the work associated with reconstructing the concrete encased stone wall with new concrete.

This includes all or portions of Division 1 specifications as applicable, necessary mobilization, demobilization, general conditions, overhead, profit, incidentals, traffic control, water control, sediment control, repointing of underlying stone, forming and pouring new concrete encasement around the underlying stone (estimated quantity 20 square feet), site cleanup and restoration, and project records needed to reconstruct the existing concrete encasement at the southeast corner of the grist mill.

2. Measurement for payment will be Lump Sum Price as stated on the Bid Form

3. Payment will be made at the contract Lump Sum Price.

D. Contract Line Item Number 0040, Stone Masonry Building Wall Surface Repairs.

1. This item consists of all labor, equipment, tools and materials necessary to complete the work associated with stone masonry building wall surface repairs. This includes all or portions of Division 1 specifications as applicable, necessary mobilization, demobilization, general conditions, overhead, profit, incidentals, traffic control, water control, sediment control, inspection, debris and loose stone removal, cleaning, repointing existing stone surfaces, and installing new stone in existing voids, site cleanup and restoration, and project records needed, per the design drawings and specifications, to repair the existing stone building wall and arch surfaces (estimated quantity 22 square feet) at the southeast corner of the grist mill structure.

2. Measurement for payment will be Lump Sum Price as stated on the Bid Form

3. Payment will be made at the contract Lump Sum Price.

E. Contract Line Item Number 0050, Brick Masonry Repairs.

1. This item consists of all labor, equipment, tools and materials necessary to complete the work associated with brick masonry building surface repairs. This includes all or portions of Division 1 specifications as applicable, necessary mobilization, demobilization, general conditions, overhead, profit, incidentals, traffic control, water control, sediment control, inspection, debris and loose brick removal, cleaning existing brick surfaces, repointing entire brick arch, providing new matching brick to rebuild missing or deteriorated portions of brick arch, site cleanup and restoration, and project records needed, per the design drawings and specifications, to the existing brick arch and brick wall surfaces (estimated quantity 8 linear feet) at the southeast corner of the grist mill structure.

2. Measurement for payment will be Lump Sum Price as stated on the Bid Form

3. Payment will be made at the contract Lump Sum Price.

F. Contract Line Item Number 0060, Option/Additive A1, Surface Repairs to Stone Masonry Retaining Wall

1. This additive item consists of all labor, equipment, tools and materials necessary to complete the work associated with surface repairs to stone masonry retaining “ell” wall downstream of the grist mill. This includes all or portions of Division 1 specifications as applicable, necessary mobilization, demobilization, general conditions, overhead, profit, incidentals, traffic control, water control, sediment control, debris and loose masonry removal, filling voids with new stone to match existing, and repointing joints at the existing stone retaining “ell” wall within the marked limits shown on the design drawings and specifications.

2. Measurement for payment will be Lump Sum Price as stated on the Bid Form

3. Payment will be made at the contract Lump Sum Price.

G. Contract Line Item Number 0070, Option/Additive A2, Reconstruct Concrete Encased Stone Wall with Exposed Stone to Match Existing Stone of Mill Structure

1. This additive item consists of all labor, equipment, tools and materials necessary to complete the work associated with reconstructing the encased stone wall, using exposed stone and mortar surfacing, and materials selected to complement the adjacent grist mill walls. This includes all or portions of Division 1 specifications as applicable, necessary mobilization, demobilization, general conditions, overhead, profit, incidentals, traffic control, water control, sediment control, placing new stone and mortar on the exposed surface of the encased wall, in lieu of concrete surfacing, with stone and mortar materials selected to match the surrounding walls (estimated quantity 20 square feet), site cleanup and restoration, and project records needed to reconstruct the existing concrete encasement using stone and mortar surfacing, rather than concrete, at the southeast corner of the grist mill.

2. Contractor shall include a credit to the government for the costs associated with forming and pouring the new concrete encasement in CLIN 0030, which would be replaced by exposed stone and mortar, selected to match the existing grist mill walls, if this additive is selected.

3. Measurement for payment will be Lump Sum Price as stated on the Bid Form

4. Payment will be made at the contract Lump Sum Price.

SITE

LOCATION

SAGA # P15PC00036 - SAINT-GAUDENS NHS GRIST MILL FOUNDATION REPAIR

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SITE

LOCATION

CONTRACTOR STAGING

AREA SHALL BE FULL

ENCLOSED USING SILT

FENCE.

ENTRANCE TO STAGING

AREA SHALL HAVE

SECTION OF SILT

FENCE WHICH CAN BE

OPENED DURING

WORKHOURS AND

CLOSED WHEN NOT IN

USE. A ROW OF

SANDBAGS SHALL BE

USED TO SEAL SILT

FENCE WHEN

ENTRANCE IS CLOSED.

r==::2.

TEMPORARY SANDBAG COFFERDAM ON DAM---

SPILLWAY CREST, AS NEEDED. PROTECT

BUILDING, DAM, SPILLWAY AND OTHER

APPURTENANT STRUCTURES FROM DAMAGE.

FOOT TRAFFIC ACCESS ONLY; NO

VEHICLES OR EQUIPMENT

ADJACENT TO BUILDING OR

RETAINING WALLS

LOCATION OF BUILDING

FOUNDATION REPAIRS

PROTECT EXISTING STONE

MASONRY RETAINING

WALLS TO REMAIN

TEMPORARY BULK BAG COFFERDAM

EDGE OF BANK IMPACTED

BY TEMPORARY STREAM

CROSSING (15 'L X 10' W)

00------

L:.

I I I I I I

STONE WALL

BARRIER WALL WITH

GUIDERAIL

II I

II I

II I

11 1

II I

If I I I I

II I

"' II I

"' II I

II I

II I

TEMPORARY SIPHON(S) ANO/OR

PUMP SUCTION/DISCHARGE

UNE(S) TO ACHIEVE TEMPORARY

LO'McRING OF IMPOUNDMENT.

CONSTRUCTION

DEWATERING

SETTLING

BASIN

(TIP.)

SILT FENCE BACKED

BY STRAW WADDLES

(TYP.)

ADJACENT TO ACCESS %

ROAD-

EXISTING ACCESS ROUTE TO DAM-'---

TO BE USED FOR CONTRACTOR'S

ACCESS (IF NEEDED) TO 1)

INSTALL/MAINTAIN/REMOVE

TEMPORARY COFFERDAMS AND/OR

01HER WATER CONTROL

MEASURES AND 2) COMPLETE

CONTRACT REPAIR/RESTORA TIO�

WORK. TEMPORARY EROSION

CONTROLS SHALL BE

INSTALLEl!>/MAINTAINED/REMOVED

AS REQUIRED BY NHDEP

PERMITTlNG REQUIREMENTS. ALL

DISTURBED AREAS SHALL BE

RESTORED TO ORIGINAL

CONDITION.

CONTRACTOR STAGING

AREA SHALL BE FULL

ENCLOSED USING SILT

FENCE.

ENTRANCE ifO STAGING

AREA SHALL HAVE

SECTIQN o�I SILT

FENCE MICH �N BE

OPENED DURING

WORKHOURS AND

CLOSED WHEN NOT IN

USE. A ROW OF

SANDBAGS SHALL BE

USED TO SEAL SILT

FENCE WHEN

ENTRANCE IS CLOSED.

SF

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1<f � .. , �I

ACCESS AND SITE PLAN

SCALE: 1" = 30'

TEMPORARY OPTION A1 SUB-BID

BULK BAG COFFERDAM, AS NEEDED

ACCESS

FOOT TRAFFlC ACCESS ONLY; NO

VEHICLES OR EQUIPMENT

ADJACENT TO BUILDING OR

RETAINING WALLS

LOCATION OF RETAINING

WALL SURFACE REPAIRS

PROTECT EXISTING

STONE MASONRY

RETAINING WALLS TO

REMAIN

LOCATION OF BUILDING

FOUNDATION REPAIRS

TEMPORARY BASE BID BULK

BAG COFFERDAM, AS NEEDED

TEMPORARY SANDBAG COFFERDAM ON DAM SPILLWAY

CREST, AS NEEDED. PROTECT BUILDING, DAM, SPILLWAY

AND OTHER APPURTENANT STRUCTIJRES FROM DAMAGE.

TEMPORARY OPTION A2 SUB-BID

BULK BAG COFFERDAM, AS NEEDED

LOCATION OF BUILDING

FOUNDATION REPAIRS

TEMPORARY BASE BID BULK BAG

COFFERDAM, AS NEEDED

AND COFFERDAM PHOTOGRAPHIC DEPICTIONS

NOT TO SCALE

-30 0 30 60

SCALE: 1" = 30'

DESIGNED:

NW

DRAWN:

DB

TECH. REVIEW:

BJB

DATE:

12/2/2024

SUB SHEET NO.

CS-101

TEMPORARY SANDBAG

COFFERDAM ON DAM

SPILLWAY CREST, AS

NEEDED. PROTECT BUILDING,

DAM, SPILLWAY AND OTHER

APPURTENANT STRUCTIJRES

FROM DAMAGE.

Tin.£ OF SHEET

SITE ACCESS, STAGING AND

WATER CONTROL PLAN

GRIST MILL FOUNDATION REPAIR

BLOW-ME-DOWN DAM

SAINT-GAUDENS NATIONAL HISTORIC SITE

CORNISH, NEW HAMPSHIRE

DRAWING NO.

102658

PMIS/PKG NO.

246315

SHEET

V

GRIST MILL BUILDING

APPROX. LOCATION

OF SECONDARY VOID

PROTECT STONE MASONRY

RETAINING WALLS

BRICK LEDGE

L..:

3'±

BLOW-ME-DOWN POND

REMOVE AND DISPOSE OF EXISTING CONCRETE

ENCASEMENT. AFTER REMOVAL, RECONSTRUCTED

AS DEPICTED IN SECTION 2 BELOW. ALL FINISHED

WORK FOR EITHER REPAIR METHOD SHALL MATCH

THE LIMITS OF EXISTING CONCRETE ENCASEMENT.

GENERAL STRUCTURAL NOTES

SEE STONE AND BRICK MASONRY

REPAIR DETAILS, SHEET CD-502

1. THE WORK SHOWN ON THESE DRAWINGS HAS BEEN DESIGNED IN ACCORDANCE WITH THE FOULOWING:

1.1. THE NEW HAMPSHIRE STATE BUILDING CODE, INCLUDING THE 2003 INTERNATIONAL BUILDING CODE, EXCEPT AS AMENDED, ALTERED OR DELETED BY THE ADDITIONAL PROVISIONS IN THE NEW

HAMPSHIRE CODE.

l

BLOW-ME-DOWN

BROOK

REMOVE/DISPOSE EXISTING CONCRETE ENCASEMENT

AND CONSTRUCT NEW CONCRETE ENCASEMENT

1'±

PROTECT EXISTING CONCRETE TRAINING

WALL TO REMAIN

APPROX. EDGE OF EXISTING

FOUNDATION STONES

TO REMAIN

I io

SEE STONE AND BRICK MASONRY

REPAIR DETAILS, SHEET CD-502

FILL VOID (INCLUDING SECONDARY

VOID) UNDER BUILDING

CORNER WITH CONCRETE

SEE STONE AND BRICK MASONRY

REPAIR DETAILS, SHEET CD-502

FILL VOID

WITH CONCRETE

EXISTING STONES

SURROUNDING VDID

TO REMAIN

EXISTING BUILDING STONE

FOUNDATION

FILL VOID

WITH CONCRETE

REMOVE AND DISPOSE OF ALL

LOOSE STONES, SOIL/SEDIMENT

AND DEBRIS IN VOID PRIOR TO

FILLING WITH CONCRETE. (SEE

GENERAL NOTE 5)

2. ALL STRUCTURAL WORK SHOWN OR SPECIFIED ON THESE DRAWINGS IS SUBJECT TO REVIEW BY THE STRUCTURAL ENGINEER OF RECORD. ASPECTS OF THE WORK FOUND NOT IN CONFORMANCE WITH THE

STRUCTURAL DOCUMENTS SHALL BE CORRECTED AS DIRECTED BY THE ENGINEER.

3. ALL CONCRETE SHALL BE AIR-ENTRAINED IN ACCORDANCE WITH THE SPECIFICATIONS.

4. ALL EXPOSED EDGES OF THE CONCRETE SHALL HAVE CHAMFERS UNLESS OTHERWISE NOTED.

5. THE VOID SHALL BE INSPECTED BY THE ENGINEER PRIOR TO PLACEMENT OF FORMWORK OR CONCRETE.

THE ENGINEER SHALL BE THE SOLE JUDGE AS TO THE SUITABILITY OF THE VOID AND MAY AT HIS

DISCRETION DIRECT THE CONTRACTOR TO FURTHER PREPARE THE VOID.

6. THE CONTRACTOR SHALL COORDINATE THE WORK TO ENSURE ALL THE WORK SHOWN ON THESE PLANS

IS COMPLETED IN A TIMELY MANNER.

7. THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROVIDING, OPERATING AND MAINTAINING ALL

EQUIPMENT NECESSARY TO CONTROL WATER AND DEWATER SITE EXCAVATIONS.

7.1. PREVENT WATER, SURFACE WATER AND GROUND WATER FROM ENTERING EXCAVATIONS, FROM

PONDING ON PREPARED SUBGRADES, AND FROM FLOODING PROJECT SITE AND SURROUNDING

AREA.

7.2. REROUTE SURFACE WATER RUNOFF AWAY FROM EXCAVATED AREAS.

8. DIMENSIONS OF EXISTING STRUCTURES SHOWN ON THESE PLANS HAVE BEEN TAKEN FROM FIELD MEASUREMENTS AND ARE NOT GUARANTEED. THE CONTRACTOR SHALL VERIFY ALL EXISTING DIMENSIONS

IN THE FIELD.

9. REPRESENTATION OF EXISTING CONDITIONS CONTAINED IN THESE PLANS ARE FURNISHED ONLY FOR THE INFORMATION AND CONVENIENCE OF THE CONTRACTOR. IT SHALL BE UNDERSTOOD AND AGREED THAT

THE OWNER DOES NOT WARRANT OR GUARANTEE THAT MATERIALS ENCOUNTERED DURING

CONSTRUCTION WILL BE THE SAME AS THOSE INDICATED BY INFORMATION GIVEN ON THE DRAWINGS.

THE CONTRACTOR MUST SATISFY ITSELF REGARDING THE CHARACTER, QUANTITIES AND CONDITIONS OF

THE VARIOUS MATERIALS AND WORK TO BE DONE.

10. THE TERM 'BEYOND' USED IN SECTION VIEWS OF STRUCTURAL ELEMENTS INDICATES THAT SAID ELEMENT IS NOT IN THE LINE OF THE SECTION CUT; HOWEVER, IT PROVIDES A GREATER UNDERSTANDING OF THE

STRUCTURE.

11. THE CONTRACTOR SHALL PROVIDE ALL DEVICES AND MATERIALS REQUIRED TO PREVENT PEDESTRIANS

FROM ENTERING THE SITE, AND TO DIRECT THEM AWAY AND AROUND THE WORK AREA.

COLD WEATHER CONSTRUCTION PROCEDURES

1. IT SHALL BE THE CONTRACTOR'S RESPONSIBILITY TO CONTINUOUSLY PROTECT SOILS, CONCRETE, MASONRY AND OTHER BUILDING MATERIALS FROM DAMAGE DUE TO COLD TEMPERA TURES, UNTIL THE

COMPLETED WORK HAS BEEN TURNED OVER TO THE OWNER. THIS SHALL INCLUDE TEMPORARY

ENCLOSURES, INSULATED BLANKETS AND TEMPORARY HEATING AS REQUIRED.

2. IT SHALL BE THE CONTRACTOR'S RESPONSIBILITY TO REPAIR AND/OR REPLACE ANY DAMAGED OR

DEFECTIVE WORK, IN A MANNER APPROVED BY THE ENGINEER.

3. FROZEN MATERIALS OR MATERIALS CONTAINING ICE SHALL NOT BE USED.

4. ALL PROTECTIVE AND CORRECTIVE WORK SHALL BE DONE AT THE EXPENSE OF THE CONTRACTOR.

SELECTIVE DEMOLITION

1. THE CONTRACTOR SHALL REMOVE STRUCTURES OR PORTIONS OF STRUCTURES ONLY AS

INDICATED ON THE PLANS.

2. SELECTIVE DEMOLITION SHALL BE LIMITED TO REMOVING ONLY THE EXTENT REQUIRED TO

RECONSTRUCT THE DAMAGED OR FAILING PORTION OF THE WALL

3. SELECTIVE DEMOLITION OF THE EXISTING CONCRETE SHALL BE ACCOMPLISHED WITH PNEUMATIC

HAND TOOLS AND SAWS SUITED FOR CUTTING CONCRETE UNLESS APPROVED BY THE ENGINEER.

STONE MASONRY REPAIR NOTES

EXISTING CORNER

STONES TO REMAIN

J

PROTECT EXISTING CONCRETE TRAINING WALL BEYOND

1. USE LOW PRESSURE WATER JET TO REMOVE UNSUITABLE MATERIAL FROM

STONES IN VOID.

2. THE SIZE, COURSE, ORIENTATION, AND PLACEMENT OF STONES SHALL MATCH

THE EXISTING STONES AND BLEND WITH ADJACENT WALL SECTIONS. THE

CONTRACTOR SHALL TAKE PRECONSTRUCTION PHOTOGRAPHS OF THE COMPLETE

SURFACE OF EACH WALL TO BE REPAIRED FOR ARCHIVAL AND COMPARISON

PURPOSES.

REMOVE AND DISPOSE OF EXISTING CONCRETE

ENCASEMENT AND RECONSTRUCT STONE MASONRY

CORNER TO MATCH DOWNSTREAM BUILDING WALL FACE.

(SEE STONE MASONRY REPAIR NOTE 2)

GROUT VOIDS IN EXISTING

STONES TO REMAIN SEE STONE AND BRICK MASONRY

REPAIR DETAILS, SHEET CD-502

1'-0"± APPROX. NORMAL

WATER SURFACE (VARIES)

---�--'V=---- -aa:-2" CHAMFER

REMOVE AND DISPOSE OF ALL

LOOSE STONES, SOIL/SEDIMENT

AND DEBRIS IN VOID. (SEE GENERAL

NOTE 5)

FILL VOID

WITH CONCRETE

EXISTING STONES

SURROUNDING VOID

TO REMAIN

J

REMOVE UNSUITABLE MATERIAL 1 "I

SLOPE TOP ¾° /FT. AWAY FROM

BUILDING

REMOVE EXISTING STONE MASONRY AS

REQUIRED TO ACHIEVE 6" MIN. ENCASEMENT

THICKNESS

MATCH LIMITS OF EXISTING

CONCRETE ENCASEMENT

NEW CONCRETE ENCASEMENT

(PROVIDE 2" MIN. COVER OVER

REINFORCEMENT)

�-+-�-114 AT 12" E.W.

GROUT VOIDS IN EXISTING

STONES TO REMAIN

1'-0"± APPROX. NORMAL

WATER SURFACE (VARIES)

g

__.,.-REMOVE AND DISPOSE OF

,___-,,- ALLLOOSE STONES,

SOIL/SEDIMENT

AND DEBRIS IN VOID.

(SEE GENERAL NOTE 5)

0 GRIST MILL PLAN 1 -------------

SC ALE: N. T.S.

REMOVE UNSUITABLE MATERIAL

ON STONES IN VOID (SEE STONE

MASONRY REPAIR NOTE 1)

BEDROCK CONTOUR IN

VOID VARIES

ON STONES IN VOID (SEE STONE

MASONRY REPAIR NOTE 1)

3'-o" ±

OPTION/ADDITIVE A2: SECTION AT S.E. CORNER

SCALE: N.T.S.

NOT TO SCALE

NOT TO SCALE

CORNER REPAIR DETAIL (BASE BID)

SCALE: N. T.S.

DESIGNED: SUB SHEET NO.

SH CD-501

DRAWN:

DB

TECH. REVIEW:

BJB

DATE:

12 2 2024

TITLE OF SHEET

BEDROCK CONTOUR IN

VOID VARIES

FOUNDATION REPAIR DETAILS

GRIST MILL FOUNDATION REPAIR

BLOW-ME-DOWN DAM

SAINT-GAUDENS NATIONAL HISTORIC SITE

CORNISH, NEW HAMPSHIRE

DRAWING NO.

102658

PMIS/PKG NO.

246315

©..._;p�SH;_;_CA_;;_�E_;_;�_;;_-T_;;_�.;_;�_;_A_;_P_;_H;......_;;;;5 ___________________ _

OPTION/ADDITVE A1: REMOVE

DEBRIS AND LOOSE MASONRY

FROM VOIDS: FILL VOIDS WllH

STONE MASONRY TO MATCH

EXISTING. REPOINT JOINlS

WllHIN MARKED LIMllS. EXTEND

TEMPORARY COFFERDAM AND

DEWATER WORK AREA TO

COMPLETE REPAIRS IN DRY

CONDITIONS.

I

I

DESIGNED: SUB SHEET NO.

SH

DRAWN: CD-503

DB

TECH. REVIEW:

BJB

DATE:

12 2 2024

UMllS OF GRIST WAU.

TITLE OF SHEET

FOUNDATION REPAIR DETAILS

GRIST MILL FOUNDATION REPAIR

BLOW-ME-DOWN DAM

SAINT-GAUDENS NATIONAL HISTORIC SITE

CORNISH, NEW HAMPSHIRE

DRAWING NO.

102658

PMIS/PKG NO.

246315