B09-_P1523R0004_Amendment___2_Questions_and_Answers_0002.pdf

Solicitation # 140P1523R0004 Amendment# 2 Questions and Answers from Site Visit held on June 5th, 2023

General

1. Question: Please confirm CIM 1000 TG or Sika 7600 VG is an acceptable fluid applied waterproofing membrane for the CMU exterior walls.

Answer: Product submittals will be reviewed after award. Products conforming to the requirements of specification section 071416 will be approved

2. Question: Please confirm ONLY the exterior part of the CMU wall is being coated with new fluid applied waterproofing.

Answer: Thank you for this question. Please see “Revised S1 – Bid Question 18.pdf” for updated detail showing waterproofing on the interior face also

3. Question: How many cracks in the CMU wall should we assume? Typically an amount of 100 linear feet is where we start for a project of this size.

Answer: The CMU wall receiving cold fluid-applied waterproofing is new and shall not have cracks. Any cracks should be repaired at the contractors expense prior to applying waterproofing.

4. Question: Please advise what the current waterproofing membrane is on the exterior below grade CMU wall? Has it been tested for hazardous materials? If it is hazardous, please confirm the Park will hire another party to abate the hazardous materials.

Answer: In the interest of minimizing any potential delays, please cost this project assuming no hazardous materials are present in the waterproofing membrane. Proposals may include a include a subcontracted hazardous materials survey at the discretion of each prospective contractor. If such a survey reveals the presence of asbestos or other hazardous materials in the existing waterproofing membrane, a contract modification will facilitate this work.

5. Question: Fluid applied waterproofing will need to be installed during declining temperatures which could mean a work shift as late as 4pm to 12:30am. Please confirm if coordinated ahead of time, work can be done at any hour?

Answer: There are limitations on noise and lighting in the park after regular hours, and this project is close to a residential area of the park. However, NPS does not anticipate a need

United States Department of the Interior

NATIONAL PARK SERVICE

INTERMOUNTAIN REGION

Arizona Major Acquisition Buying Office

1824 South Thompson Street, Suite 200

Flagstaff AZ 86001 for noisy equipment or bright lighting for the fluid applied waterproofing portion of the work. Any related, noisy preparation work must take place during regular hours as noted in the Summary of Work. Work on the fluid applied waterproofing after hours will require Contracting Officer’s approval to proceed. Please see 011100 Summary of Work (1.8 Work Restrictions) and 015719.12 Noise & Acoustics Management for further guidance.

6. Question: Please confirm that the park understands that any substrate repairs or upgrades after the existing waterproofing at the below grade CMU wall is removed (including but not limited to: CMU block repairs, Spall Repairs, Void filling, Heavy pitting, etc...) will result in additional charges to repair prior to installing the new waterproofing. It is not possible to verify the existing condition of the CMU wall until the existing waterproofing is removed.

Answer: Waterproofing is to be applied to new CMU wall, not existing.

7. Question: It is common to have a 3rd party fill and water test the below grade areas prior to backfilling. Please confirm the park will hire a 3rd party to conduct the water testing of the newly installed membrane prior to backfilling.

Answer: 3rd party testing of waterproofing is not required for this project. If the contractor wishes to have 3rd party testing, the contractor shall engage with the testing agency.

8. Question: What is the check in process to the work site? Security check in each day? Special badging requirements for every employee?

Answer: Contractor and subcontractor employees may have to self-identify at the park entrance station if not using the designated bypass lane and may need to self-identify once inside the park or at the work site if asked by park staff. There is no additional security check in requirement, and there is no badging requirement. However, contractor staff with contractual authority should be available onsite, by email, or by telephone for verification purposes while work is taking place or while contractor or subcontractor employees are present.

*NO SOLICITATION CLAUSES WILL BE CHANGED WITH THIS AMENDMENT*.

DESIGN CRITERIA

1) BUILDING CODES: 2021 INTERNATIONAL BUILDING CODE

2) RISK CATEGORY II (STANDARD)

3) DESIGN LOADS:

a) ROOF DEAD LOAD: 15 PSF

b) ROOF SNOW LOAD: 42 PSF

c) GROUND SNOW LOAD, Pg = 60 PSF c)a) EXPOSURE FACTOR, Ce = 1.0 (PARTIALLY EXPOSED) c)b) THERMAL FACTOR, Ct = 1.0 (NOT OTHERWISE DEFINED) c)c) IMPORTANCE FACTOR, Is = 1.0

d) FLOOR DEAD LOAD: 15 PSF

e) FLOOR LIVE LOAD:

e)a) LIBRARY STACK ROOM 150 PSF (NON-REDUCIBLE)

f) WALL DEAD LOAD:

f)a) WOOD EXTERIOR WALL240 PLF f)b) CMU WALL 400 PLF

g) WIND SPEED, Vult = 115 MPH, EXPOSURE B

h) AS THE LATERAL SYSTEM OF THE BUILDING IS NOT IMPACTED DUE TO THE PROPOSED

MODIFICATIONS, A LATERAL LOAD ANALYSIS WAS NOT COMPLETED FOR THIS BUILDING.

FOUNDATION DESIGN

1) FOUNDATION DESIGN WAS PERFORMED WITHOUT A SITE SPECIFIC GEOTECHNICAL ENGINEERING

REPORT. BASED UPON OTHER GEOTECHNICAL ENGINEERING REPORTS IN THE SURROUNDING

AREA, IT IS ASSUMED THAT THE FOUNDATIONS WILL BEAR ON LIMESTONE BEDROCK.

CONTRACTOR SHALL REVIEW THE BEARING STRATUM WITH CONTRACTING OFFICER,

CONTRACTING OFFICERS REPRESENTATIVE, AND REGIONAL PROJECT MANAGER AFTER

EXCAVATION AND PRIOR TO FOUNDATION CONSTRUCTION.

2) FOUNDATION DESIGN IS BASED ON A MAXIMUM ALLOWABLE BEARING PRESSURE OF 4,000 PSF.

3) FROST DEPTH SHALL BE 30"

LIBRARY STACK LAYOUT

1) IN ACCORDANCE WITH THE 2021 INTERNATIONAL BUILDING CODE, DOUBLE-FACED LIBRARY BOOK

STACKS ARE SUBJECT TO THE FOLLOWING LIMITATIONS:

iw) THE NOMINAL BOOK STACK HEIGHT SHALL NOT EXCEED 7'-6”.

ix) THE NOMINAL SHELF DEPTH SHALL NOT EXCEED 12” FOR EACH FACE.

iy)PARALLEL ROWS OF DOUBLE-FACED BOOK STACKS SHALL BE SEPARATED BY AISLES NOT LESS

THAN 36” IN WIDTH

CONCRETE

1) REFER TO DIVISION 03 SPECIFICATIONS FOR PROJECT REQUIREMENTS FOR CONCRETE

CONSTRUCTION

MASONRY

1) REFER TO DIVISION 04 SPECIFICATIONS FOR PROJECT REQUIREMENTS FOR MASONRY

CONSTRUCTION

2) PROVIDE CONTROL JOINTS AT 25 FEET OR 1.5 TIMES THE HEIGHT OF THE WALL, WHICHEVER IS LESS. LOCATE JOINTS AT AREAS PRONE TO CRACKING, SUCH AS CHANGES IN WALL HEIGHT AND

ADJACENT TO OPENINGS. PROVIDE CONTROL JOINT LAYOUT FOR REVIEW AND APPROVAL. DO

NOT CONTINUE HORIZONTAL REINFORCING THROUGH THE CONTROL JOINT.

3) UTILITIES LESS THAN 6" DIAMETER THROUGH STEMWALL CAN BE CORE DRILLED. DO NOT CORE

DRILL THROUGH REINFORCED CELLS.

WOOD

1) REFER TO DIVISION 06 SPECIFICATIONS FOR PROJECT REQUIREMENTS FOR WOOD CONSTRUCTION.

2) CUT ENDS OF ALL PRESSURE TREATED FRAMING SHALL BE TREATED WITH PRESERVATIVE ON SITE.

MISCELLANEOUS

1) REFER TO DIVISION 01 SPECIFICATIONS FOR GENERAL PROJECT REQUIREMENTS.

2) REFER TO SPECIFICATIONS FOR SPECIAL INSPECTIONS.

3) CONTRACTOR TO PROVIDE ENGINEERED DESIGN FOR TEMPORARY SHORING. DESIGN SHALL BE SEALED BY AN ENGINEER LICENSED IN THE STATE OF ARIZONA AND SUBMITTED FOR REVIEW AND

APPROVAL.

BUILDING LIFTING

1) BUILDING LIFTING SHALL BE EXECUTED BY A QUALIFIED CONTRACTOR WITH AT LEAST 5 YEARS

EXPERIENCE WITH SIMILAR PROJECTS. SUBMIT QUALIFICATIONS FOR REVIEW AND APPROVAL.

2) CONTRACTOR TO PROVIDE ENGINEERED DESIGN FOR LIFTING STRUCTURE. DESIGN SHALL BE SEALED BY AN ENGINEER LICENSED IN THE STATE OF ARIZONA AND SUBMITTED FOR REVIEW AND

APPROVAL.

3) BUILDING TO BE LIFTED AND HELD IN PLACE DURING SELECTIVE DEMOLITION AND CONSTRUCTION

OF NEW FOUNDATIONS. FOUNDATIONS ARE SHOWN SQUARE BUT SHALL BE ADJUSTED TO

ACCOUNT FOR BUILDING IRREGULARITIES.

4) WHEN BUILDING IS LIFTED, EXPOSE ALL FLOOR FRAMING TO REMAIN AND REVIEW EXISTING

FRAMING WITH CONTRACTING OFFICER.

5) CONTRACTOR SHALL REPAIR ANY CRACKS IN FINISHES THAT OCCUR DURING BUILDING LIFTING.

APPLICABLE CODES & STANDARDS:

2021 INTERNATIONAL BUILDING CODE

2021 INTERNATIONAL EXISTING BUILDING CODE

2021 INTERNATIONAL ENERGY CONSERVATION CODE

SECRETARY OF THE INTERIOR'S STANDARDS AND GUIDELINES

FOR THE TREATMENT OF HISTORIC PROPERTIES

WORK CLASSIFICATION:

IEBC 202, HISTORIC BUILDING

IEBC 604, LEVEL III ALTERATION (GREATER THAN 50% OF

BUILDING AREA)

IEBC 801.4, NEW CONSTRUCTION ELEMENTS COMPONENTS,

SYSTEMS AND SPACE SHALL COMPLY WITH THE

REQUIREMENTS OF THE INTERNATIONAL BUILDING CODE.

OCCUPANCY CLASSIFICATION:

IBC 303.4, OCCUPANCY: ASSEMBLY GROUP A-3 (LIBRARIES. NO

CHANGE IN OCCUPANCY

GENERAL BUILDING HEIGHTS AND AREAS:

EXISTING HEIGHT: 24'-1" EXISTING AREA: 2,853 SF GROSS

PROPOSED HEIGHT: 24'-4" EXISTING AREA: 2,853 SF GROSS

(NO CHANGE TO AREA)

IBC 504.3 ALLOWABLE BUILDING HEIGHT IN FEET ABOVE GRADE

PLANE: 40'

CONSTRUCTION TYPE:

IBC 602.5, Type V-B (UNSPRINKLERED)

IBC 601 AND 705.5, REQUIRED FIRE RESISTANCE RATINGS

PRIMARY STRUCTURAL FRAME 0 HR

EXTERIOR BEARING WALLS 0 HR

INTERIOR BEARING WALLS 0 HR

EXTERIOR NON-BEARING WALLS 0 HR

INTERIOR NON-BEARING WALLS 0 HR

FLOOR CONSTRUCTION 0 HR

ROOF CONSTRUCTION 0 HR

MEANS OF EGRESS:

IBC 1004.5, OCCUPANT LOADS

ASSEMBLY (UNCONCENTRATED) 21

LIBRARY STACKS 7

LIBRARY READING ROOM 30

STORAGE 1

TOTAL BUILDING OCCUPANTS: 59

IBS 1005, MEANS OF EGRESS SIZING: 59 OCCUPANTS x .2 = LESS

THAN MINIMUM COMPONENT WIDTH

IBC 1006.2.1, TWO EXITS FROM ANY SPACE SHALL BE PROVIDED

WHERE THE DESIGN OCCUPANT LOAD EXCEEDS 49 OCCUPANTS.

3 EXITS PROVIDED. MAXIMUM COMMON PATH OF TRAVEL: 75'

IBC 1007.1.1, EXIT SEPARATION WHERE TWO EXITS ARE

REQUIRED, THEY SHALL BE PLACED A DISTANCE APART NOT

LESS THAN HALF OF THE LENGTH OF THE MAXIMUM OVERALL

DIAGONAL DIMENSION OF THE BUILDING OR AREA TO BE

SERVED.

ENERGY CONSERVATION:

IEBC C907.1, LEVEL 3 ALTERATIONS ARE PERMITTED WITHOUT

REQUIRING THE ENTIRE BUILDING OR STRUCTURE TO COMPLY

WITH THE ENERGY REQUIREMENTS OF THE IECC.

IECC C402.1.3, OPAQUE THERMAL ENVELOPE MINIMUM

REQUIREMENTS: FLOORS R-30 (NOTE: FOUNDATION WALLS ARE

OUTSIDE THERMAL ENVELOPE)

VENTILATION:

IBC 1201.4.1.2, NET AREA OF VENTILATION OPENINGS FOR

CRAWL SPACES WITH GROUND COVERED WITH CLASS I VAPOR

RETARDER SHALL NOT BE LESS THAN 1 SF PER 1500 SF OF

CRAWL SPACE: 2694

1500 SF = 1.796 SF VENTILATION REQUIRED (1.94

PROVIDED)

IBC 1202.4.3.1 CONTINUOUSLY OPERATED MECHANICAL

VENTILATION SHALL BE PROVIDED AT A RATE OF 1CF PER

MINUTE (CFM) FOR EACH 50 SF OF CRAWL SPACE

CRAWL SPACE: 2694

50 = 54 CFM (110 PROVIDED)

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EXISTING JOISTS

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EXISTING WALL STRUCTURE

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EXISTING FLOOR

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FINISHED GRADE

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8" MASONRY WALL

AutoCAD SHX Text CLOSED CELL POLYETHYLENE SILL SEALER GASKET WITH SELF-ADHESIVE WATERPROOFING MEMBRANE, FULL WIDTH OF CMU

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6" PERFORATEDFOUNDATION DRAIN, WRAP IN GEO-TEXTILE FABRIC

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DRAIN ROCK

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GEO-TEXTILE LINER

AutoCAD SHX Text PRESSURE TREATED 1x3 BATTENS AT 8"o.c. FASTENED TO CMU WALL WITH "x2- " MASONRY 14"x2- " MASONRY 14" MASONRY SCREWS AT 8"o.c.

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FLUID APPLIED WATERPROOFING OVER ALL EXTERIOR CMU SURFACES

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STAINLESS STEEL FLASHING PAINTED BLACK

AutoCAD SHX Text PRESSURE TREATED SPLIT LOG SLABS PLACED VERTICALLY. DIMENSIONS AND SPECIES TO MATCH EXISTING. PRIME AND PAINT TO MATCH EXISTING

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DRAIN BOARD

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EXISTING LOG

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SEALANT

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CONCRETE FOOTING

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POLYETHYLENE VAPOR BARRIER TAPED AT ALL EDGES AND COLUMN PENETRATIONS

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R30 BATT INSULATION

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STAFF ROOM

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READING ROOM

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BOOK STACKS

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READING ROOM

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CHILDREN'S READING ROOM

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CONFERENCE ROOM

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STOR.

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OCCUPANCY: READING ROOM LOAD FACTOR: 50 NET AREA: 81 SF OCCUPANT LOAD: 2

AutoCAD SHX Text OCCUPANCY: UNCONCENTRATED ASSEMBLY LOAD FACTOR: 15 NET AREA: 66 SF OCCUPANT LOAD: 5

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OCCUPANCY: STACK AREA LOAD FACTOR: 100 GROSS AREA: 694 SF OCCUPANT LOAD: 7

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OCCUPANCY: READING ROOM LOAD FACTOR: 50 NET AREA: 905 SF OCCUPANT LOAD: 19

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OCCUPANCY: READING ROOM LOAD FACTOR: 50 NET AREA: 421 SF OCCUPANT LOAD: 9

AutoCAD SHX Text OCCUPANCY: UNCONCENTRATED ASSEMBLY LOAD FACTOR: 15 NET AREA: 237 SF OCCUPANT LOAD: 16

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OCCUPANCY: STORAGE LOAD FACTOR: 300 GROSS AREA: 69 SF OCCUPANT LOAD: 1

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DATE:

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DESIGNED:

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TECH. REVIEW:

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SUB SHEET NO.

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PMIS/PKG NO.

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DRAWING NO.

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SHEET

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OF

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TITLE OF SHEET

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GENERAL NOTES

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B. WARREN

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V. FRIEDMAN

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J. ROZINA/K. FOX

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GRAND CANYON NATIONAL PARK

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FOUNDATION SECTION WATERPROOFING AND INSULATION

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SCALE

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SCALE OF FEET

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AutoCAD SHX Text 3/4" = 1'-0"

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BUILDING CODE ANALYSIS

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CODE PLAN

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SCALE: 1"=10'-0"

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FLUID APPLIED CAPILLARY BREAK BETWEEN FOOTING AND FOUNDATION WALL

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FLUID APPLIED WATERPROOFING OVER BELOW GRADE INTERIOR CMU SURFACES