18R0025-AM_04_BIDDERS_INQUIRY.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

EIE423 NOSE DOCK 1 RENOVATION, Eielson AFB, AK

a) This amendment provides changes to the solicitation as indicated on the continuation sheet.

b. Proposal due date is extended to 13 JULY 2018 @ 2 PM Alaska time.

c) YOU ARE REQUIRED TO ACKNOWLEDGE RECEIPT OF THIS AMENDMENT ON THE REVERSE SIDE OF THE STANDARD FORM 1442

1. CONTRACT ID CODE PAGE OF PAGES

1 2

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X W911KB18R0025

X 9B. DATED (SEE ITEM 11)

06-Jun-2018

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer X is extended, is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

10-Jul-2018

CODE

U.S. ARMY ENGINEER DISTRICT, AK

CEPOA-CT (W911KB)

PO BOX 6898

JBER AK 99506-0898

W911KB 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

a. The following drawings are substituted for the superseded documents/sections:

1. EIE423 – G-000

2. EIE423 – G-001

3. EIE423 – A-002

4. EIE423 – A-003

5. EIE423 – A-201

6. EIE423 – A-701

7. EIE423 – M-136

8. EIE423 – M-301

b. The following revised documents/sections are substituted for the superseded documents/sections: The identifier “AM#04” appears before and after new and/or revised materials, except as noted below.

SECTION 00 11 01 – PROPOSAL SCHEDULE

– (Revised proposal schedule)

SECTION 23 05 48 VIBRATION CONTROLS FOR HVAC

a. Revised paragraph 1.2.A

b. Revised paragraph 1.2.A.5

c. Revised paragraph 1.3.G

d. Deleted paragraph 2.2.A.1.a

e. Revised paragraph 2.2.A.2.a

f. Deleted paragraph 2.2.B.2.c

g. Deleted paragraph 2.2.B.3.c

h. Revised paragraph 2.3.E.1

i. Revised paragraph 3.2.A.1

j. Revised paragraph 3.2.B.1

SECTION 23 05 93 TESTING, ADJUSTING, AND BALANCING FOR HVAC

a. Deleted paragraph 3.19.A

NOTE: Revisions within the following documents do not contain the above referenced identifiers:

c. The following sections are deleted:

NONE

d. The following documents are added:

Bidders Inquiry Report

e. The following revisions are incorporated:

f. Other:

The proposal due date is extended to 13 JULY 2018 @ 2pm Alaska Time

NONE

(End of Summary of Changes)

ALL OTHER TERMS AND CONDITIONS SHALL REMAIN THE SAME.

AM#04 W911KB-18-R-0025

EIE423

PS-1

PROPOSAL SCHEDULE

RENOVATE NOSE DOCK 1

EIELSON AFB, ALASKA

BASE ITEMS

Item No. Description Quantity Unit Unit Price Amount 0001 Renovate, Nose Dock

1 within the bldg. 5 foot lines , Complete

1 Job $_________ $_________

0002 Construct Site work outside the bldg. 5 foot lines complete, Complete

1 Job $_________ $_________

AM#03…

Sample, Test and Remove Asbestos Containing Material (ACM), piping, Estimated Quantity, Complete *

115 LF $_________ $_________

0004 Sample, Test and Remove Asbestos Containing Material (ACM), fittings, Estimated Quantity, Complete *

36 Each $_________ $_________

0005 Sample, Test and Remove lead base paint material, Estimated Quantity, Complete *

100 SF $_________ $_________

0006 Sample, Test and Remove moldy material, Estimated Quantity, Complete *

100 SF $_________ $_________

Total of Base Items 0001 thru 0006 $_________...AM#03

OPTION ITEMS

W911KB-18-R-0025

PS-2

Item No. Description Quantity Unit Unit Price Amount

AM#03…

Stockpile and Sample 50 Cubic Yards of Potentially Contaminated Soil, From Field Screening, Including Construction of Holding Cells, Estimated Quantity, Complete**

50 CY $_________ $_________

0008 Dispose of 50 Cubic Yards of POL Contaminated Soil, Estimated Quantity, Complete ***

50 CY $_________ $_________

0009 Resurface Floor with high-performance coatings, Complete****

24,580 SF $_________ $_________

0010 Sample, Test and Remove Asbestos Containing Material (ACM), fittings, Estimated Quantity, Complete*****

1 Each $_________ $_________

0011 Sample, Test and Remove Asbestos Containing Material (ACM), flooring and wall components, Estimated Quantity, Complete *****

10 SF $_________ $_________

0012 Sample, Test and Remove Asbestos Containing Material (ACM), piping, Estimated Quantity, Complete ******

10 LF $_________ $_________

Total of Option Items 0007 thru 0012 $_________

Total of Base and Optional Items 0001 thru 0012 $_________...AM#03

Proposed Contract Duration: ____________________

AM#03…CLINs 0003 AM#04… through 0008 and CLIN 0010 through 0012 …AM#04 are estimated quantities. Equitable adjustments will be made in accordance with FAR CLAUSE

52.211-18, VARIATION IN ESTIMATED QUANTITY

*Work on CLIN 0003 and 0004, shall be the cost for work identified in Specs 02 82 14.00 “Hazardous Materials Abatement” and Section 01 57 20.01 29 “Environmental Protection” including the packaging, transporting, and disposal of the material. Work on CLIN 0005 shall be

PS-1

the cost for work identified in Specs 02 83 13.00 20 “Lead in Construction” including the packaging, transporting, and disposal of the material. Work on CLIN 0006 shall be the cost of work identified in Specs 02 85 00.00 20 “Mold Remediation” including the packaging, transporting, and disposal of the material. For CLINs 0003 through 0006, the Contractor shall keep a record of the amount of material being removed and disposed of.

** Work on CLIN 0007 shall be the cost for work identified in Specs 02 61 13 “Excavation and Handling of Contaminated Material” and Section 01 57 20.01 29 “Environmental Protection” that is additional to the requirements of the normal project excavation and the field screening identified in Section 31 09 20.00 29 “Field Screen Testing of Soils for POL Contamination”. For CLIN 0007, the Contractor shall keep a record of the amount of contaminated soil being excavated and disposed of. CLIN 0007 can be awarded at any time during the Construction Contract period and will not affect the duration of the contract.

*** For CLIN 0008 the Contractor shall keep a record of the amount of contaminated soil being disposed of. This is the soil determined to be contaminated through the testing of soil required by CLIN 0007 to be stockpiled and sampled. Upon completion, if the amount of contaminated soil disposed of is less than the estimated quantities shown, the Government will receive a credit based upon the unit price noted in CLIN 0008. CLIN 0008 can be awarded at any time during the Construction Contract period and will not affect the duration of the contract.

**** Work on CLIN 0009 shall be the cost for work identified in Specs 09 67 00 Flooring Overlay Resurfacer.

*****Work on CLIN 0010, 0011, and 0012 shall be the cost for work identified in Specs 02 82

14.00 “Hazardous Materials Abatement” and Section 01 57 20.01 29 “Environmental Protection” including the packaging, transporting, and disposal of the material. CLIN 0010 may be exercised up to twenty (20) times. CLIN 0011 and 0012 may be exercised up to ten (10) times.

For CLINs 0010 through 0012, the Contractor shall keep a record of the amount of material being removed and disposed of. AM#04… CLIN 0010 through 0012 can be awarded at any time during the Construction Contract period and will not affect the duration of the contract....AM#04

EVALUATION OF OFFERS.

1. AWARD: Award will be made in accordance with Section 00 22 11 - EVALUATION

FACTORS FOR AWARD.

2. INCOMPLETE OFFERS: Failure to submit an offer on all items in the schedule constitutes an incomplete offer. Incomplete offers may be rejected. Lump sum or unit prices must be shown for each item within the schedule.

3. EXTENSIONS: All extensions of the unit prices shown will be subject to verification by the Government. In case of variation between the unit price and the extension, the unit price will be considered to be the offer.

-- END OF PROPOSAL SCHEDULE --

SECTION 23 05 48

VIBRATION CONTROLS FOR HVAC

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Bases.

2. Vibration isolators.

3. Seismic Restraints.

4. Duct attenuators.

5. Ductwork lagging.

1.2 PERFORMANCE REQUIREMENTS

A. General

1. Provide resilient earthquake restraints with suitable structural support for all vibration isolated equipment and piping as specified herein and shown on the drawings AM#04…deleted text and in the vibration isolation schedule. …AM#04

2. Restraints shall be attached to structural members capable of withstanding the design dynamic load specified below.

3. Contractor shall be responsible for ensuring that the dynamic load capacity of the attachment bolts and supporting structure is greater than or equal to the capacity of the seismic restraint.

4. Contractor shall also coordinate the size of concrete piers and housekeeping pads to ensure adequate room for the isolators and the restraints.

5. Design of the seismic restraints shall be stamped and signed by a registered civil or structural engineer AM#04… licensed in the State of Alaska. …AM#04

6. Design, Select and size equipment, braces, supports and anchors.

7. Accommodate vibration and thermal movement.

8. Restraint to meet IBC requirements.

B. Work under this section shall include furnishing all labor, material, tools, and equipment necessary for the complete installation of all vibration isolation and seismic restraint for mechanical equipment, piping, ductwork, and stacks as specified and shown. Methods and materials specified in this section are minimum requirements and shall not excuse the Contractor from the responsibility of meeting the criteria specified. All changes and additions required to meet the criteria shall be made without cost to the Contracting Officer. Peak vibration velocities measured on the bearing caps of rotating equipment shall not exceed 0.08 ins/sec when the equipment is running at its operating speed.

C. To qualify for approval, manufacturer shall certify in writing that he has the required engineering and testing facilities, and registered engineering personnel.

D. A single manufacturer shall furnish all isolation products including steel bases and inertia base forms.

Exceptions: Canvas or lead vinyl duct connections, and concrete in inertial bases. Also excepted is the provision of spring isolators installed as an integral part of equipment mounted within cabinets fabricated by the equipment manufacturer, e.g. internally isolated air handling units. Not withstanding, all of the isolators shall conform to the product requirements of these specifications.

E. The manufacturer is responsible for the following:

1. Selecting vibration isolators and seismic control devices meeting Contract Document requirements.

2. Furnishing shop drawings.

3. Coordinating selection of piping supports with equipment supports to maintain uniformly efficient isolation throughout each system, while accommodating vibration, expansion, and contraction, without creating excessive stresses and objectionable noises at equipment connections, ductwork, or in piping.

4. Reviewing equipment manufacturer's literature and ensuring that procedures for setting and adjusting all isolation devices are in accord with recommendations.

F. Provide vibration isolation on motor driven equipment over 0.5 hp, plus connected piping and ductwork.

G. Maintain sound level of spaces at levels not to exceed those listed below by utilizing acoustical devices.

H. Maintain rooms at following maximum sound levels, in Noise Criteria (NC) as defined by ASHRAE

Handbook, HVAC Applications.

1.

Offices NC-35

Conference Rooms NC-35

Other Spaces & Corridors NC-40

Mechanical Spaces OSHA

1.3 SUBMITTALS

A. Shop Drawings:

1. Indicate inertia bases and locate vibration isolators, with static and dynamic load on each.

Drawings of all bases showing dimensions, center of gravity of the equipment, individual isolators for each support point, details of mounting brackets for isolators, location for all equipment mounting bolts and size and locations of concrete supports for the isolators.

2. Drawings and details showing the capacity, location, and arrangement of seismic restraints.

B. Product Data: Submit schedule of vibration isolator type including model number with location and load on each. Submit catalog information indicating, materials, dimensional data, pressure losses, and acoustical performance for standard sound attenuation products.

C. Seismic restraint designs and/or model number.

D. Detailed calculations showing the weight distribution for each equipment support point (as calculated, not averaged), and calculations showing the loads at each isolator.

E. Size, type, load, and static deflection for each isolator.

F. Manufacturer's Installation Instructions: Submit special procedures and setting dimensions. Indicate installation requirements maintaining integrity of sound isolation.

G. All submittals shall be stamped and signed by AM#04…deleted text the manufacturer’sa …AM#04 registered professional engineer AM#04… licensed in the state of Alaska. …AM#04

1.4 CLOSEOUT SUBMITTALS

A. Project Record Documents: Record actual locations of hangers and seismic restraints including attachment points.

PART 2 - PRODUCTS

2.1 BASES

A. General

1. All bases shall be sized to include equipment and motor without overhang.

2. Structural beam or channel members shall form the perimeter framing. Beam depth shall be at least 1/12th the longest span. Spans less than 6 feet shall have a beam depth of 6 inches. Welded steel end closure over ends of I beams.

3. Use diagonal beams or channel braces equal to 1/2 depth of perimeter beam when the longest beam dimension exceed 8 feet.

4. Provide earthquake bumpers to prevent excessive motion during starting and for earthquake bracing. Bumpers shall be installed after equipment is in operation to allow proper placement and alignment and to ensure that the bumpers are not engaged during normal system operation.

5. Motor driven equipment shall be mounted with motors on a common base of sufficient rigidity to maintain permanent alignment.

6. All bases shall have clearance of 1 1/2 inches between top of floor and underside of base.

B. Mounting Brackets MB-1

1. Mounting brackets sized to match vibration isolator and designed to mount directly to structural frame of mechanical equipment without the use of a separate structural steel frame.

C. Equipment Base SB-1

1. Structural steel rectangular base with cross members to prevent twisting where longest beam dimension exceeds 6 ft.

2. Use welded steel and closure plates over the end of the I beams for stiffness

3. Use height-saving brackets for side mounting of isolators.

4. Design: Sufficiently rigid to prevent misalignment or undue stress on machine, and to transmit design loads to isolators and snubbers.

5. Construction: Welded structural steel with gusset brackets, supporting equipment and motor with motor slide rails.

2.2 VIBRATION ISOLATORS

A. Steel Spring Isolators

1. General

a. AM#04…deleted text Required types of springs and spring deflections for isolators supporting various pieces of equipment are tabulated in the vibration isolation schedule in this section. …AM#04

b. All isolators for a single piece of equipment shall have approximately equal spring deflection.

c. Ends of springs shall remain parallel during deflection.

d. For each spring, provide a built-in leveling bolt.

e. Equipment must be mounted absolutely level.

f. All springs must be selected for additional 50 percent capacity to solid.

g. Provide sheet neoprene pad, Type E-1, minimum 1/4 inch thickness, bonded to the underside of the baseplate or spring to serve as a noise breaker. Select pad area and durometer to achieve a static deflection between 0.04 and 0.06 inches.

h. Isolators installed out of doors shall be designed to provide restraint due to wind loads of

30 pounds per square foot, applied on surface of equipment, without failure.

i. Installed isolators shall be adjustable and easily removed for replacement.

j. Use height saving brackets as required to achieve 1 inch clearance (+/- 1/2 inch) between base and housekeeping pad.

k. Springs must be rigidly attached, by welding or other approved means, to baseplate and top plate, except for spring hangers.

l. Springs shall be designed for minimum ratio of horizontal to vertical spring stiffness of 0.8 and minimum ratio of spring diameter to spring operating height of 0.8.

m. All floor mounted spring isolators shall have bolt holes in bases and be anchored to structure with isolated restraining bolts. Isolate bolts from base with neoprene grommets and neoprene washers. Anchor bolts shall not compress neoprene grommets and washers more than 10 percent of normal thickness.

n. For Exterior and Humid Areas: Furnish hot dipped galvanized housings and neoprene coated springs.

o. Code: Color code springs for load carrying capacity.

2. Restrained Springs Type S-2

a. Adjustable open spring isolator, AM#04… deleted textsimilar to Type S-1, …AM#04 with a frame to include vertical resilient limit stops to prevent spring extension when weight is removed.

b. For equipment whose operating weight may differ from installed weight.

c. Mounts shall be designed with fail-safe feature to protect against wind loads and overturning of mounts in earthquakes.

d. Mounts shall be capable of withstanding lateral accelerations of 1g. Allow 1/2 inch clearance around vertical restraining bolts, with neoprene grommets and washer to prevent restraining bolts from short-circuiting isolation. Limit stops must be out of contact during normal operation.

3. Spring Hanger Type SH-1

a. Steel box frame, open on two sides, containing an open steel spring capable of supporting twice the rated load without reaching the yield point.

b. Spring mounted in a molded neoprene isolation bushing.

c. Spring diameters and lower hole sizes large enough to permit hanger rod to swing through

30 degree arc before contacting hole and short-circuiting spring.

d. Provide hole in top of box for bolting to structure.

e. Misalignment: Capable of 20 degree hanger rod misalignment

f. Submittals shall include scale drawing of hanger showing misalignment capability.

g. Spring Hanger Type SH-2

h. Same as SH-1 but hanger shall be pre-compressed to the rated deflection to keep equipment or piping at fixed elevation during installation.

i. Hangers shall have release mechanism to free spring after installation is complete and hanger is subjected to full load.

4. Thrust Restraint Type TR-1 (compression)

a. Horizontal thrust restraint. Two units per fan.

b. Spring assembly with rods, clips, and miscellaneous hardware.

c. Reinforce plenum partition with 2-1/2 inch x 2-1/2 inch x 1/4 inch channels to withstand force of thrust restraint.

d. Install in compression.

B. Neoprene Isolators

1. General

a. Neoprene rubber mounts and pads shall contain a minimum 5 percent pure neoprene rubber.

b. When used in locations that prevent easy replacement, use bridge bearing stock that contains a minimum 40 percent pure neoprene rubber.

c. Use 40 durometer unless otherwise specified or required.

2. Sheet Neoprene Pads Type E-1

a. Pad mounting consisting of one or two layers approximately 5/16 inch thick ribbed or waffled neoprene pads bonded to a galvanized steel load distribution plate.

b. Thickness of the load distribution plate shall be sufficient to evenly distribute (± 10 percent) the load over the entire pad.

c. AM#04… deleted text Pad must be furnished with sufficient area to achieve the static deflection shown in the schedule. …AM#04 d.c. If anchoring is mandatory, provide neoprene grommets and washers to prevent anchor bolt from short circuiting isolation.

3. Waffle Pad Type E-2

a. Neoprene waffle pad, top and bottom, with cork sandwiched between neoprene layers.

b. Thickness of the load distribution plate shall be sufficient to evenly distribute (± 10 percent) the load over the entire pad.

c. AM#04… deleted text Pad must be furnished with sufficient area to achieve the static deflection shown in the schedule. …AM#04 d.c. If anchoring is mandatory, provide neoprene grommets and washers to prevent anchor bolt from short circuiting isolation.

4. Neoprene Hangers Type E-3

a. Cone-shaped elastomeric mounting made from neoprene with a box frame similar to isolator Type SH-1.

b. Hanger rod shall penetrate neoprene element and steel frame with sufficient clearance to allow it to swing through a 30 degree arc before contacting neoprene bushing at the perimeter of the hole in the frame.

c. Provide hole in the top of the box for bolting to structure.

d. Submittals shall include scale drawing of hanger showing misalignment capability.

5. Neoprene Impregnated Washers and Bushings Type E-4

a. Washers and bushings to be used so as to eliminate direct contact between bolt and equipment.

b. Washers consisting of multiple layer neoprene impregnated duck.

c. Washer thickness should be 1/4 inch and maximum loading not to exceed 1000 psi.

d. Bushings consisting of neoprene impregnated duck tube.

6. Pipe Anchors and Guides Type E-5

a. Directional acoustical pipe anchors and guides for vertical piping consisting of telescopic arrangement of two sizes of steel tubing separated by minimum 1/2 inch thickness of heavy duty neoprene and neoprene isolation material.

b. Vertical restraints shall prevent vertical travel in either direction.

c. Allowable loads on isolation materials shall not exceed 500 psi and design shall be balanced for equal resistance in any direction.

7. Neoprene Mounting with Captive Steel Inserts Type E-6

a. Captive neoprene mountings shall consist of a steel housing with a captive steel insert embedded in neoprene to prevent contact between the housing and the central threaded insert. Bonded assemblies without mechanical interlocks are not acceptable.

b. All mountings shall have at minimum 1.0 horizontal G ratings. All mountings shall have bolts for rigid attachment to the equipment and adequate base bolting provision.

Mountings shall have a minimum static deflection of 0.15 inch.

C. Flexible Connectors

1. General

a. Flexible connectors shall be constructed flexible stainless steel hose and shall have stainless steel braid and carbon steel fittings. Sizes 3 inch and larger shall be flanged.

b. The connector shall be terminated at both ends with either a flange or threaded fitting.

c. Connectors shall have a minimum burst pressure of 500 psi and a recommended maximum operating pressure that is greater than the design operating pressure at the temperature of the fluid.

d. All piping shall be properly aligned prior to the installation of the flexible connectors.

e. Flexible connectors shall not be used to compensate for misalignment of the piping.

2. Flex Connector Type FC-1

a. Neoprene connector that incorporates a 90 degree elbow turn.

b. Design shall be such as to allow relative movement between the flanges in any direction up to 0.625 inch.

c. The recommended maximum operating pressure shall be at least 150 psi at temperatures below 220 degrees F.

3. Flex Connector Type FC-2

a. Neoprene connector single-sphere design for installation in a section of straight pipe.

b. Design shall be to allow relative movement between the flanges as follows:

Pipe Size Axial Compression Axial Elongation less than 2 inch .375 inch .250 inch

2.5 inch .500 inch .250 inch

3 inch .625 inch .250 inch

4 inch .750 inch .375 inch

5 inch - 6 inch .875 inch .375 inch over 7 inch 1.000 inch .625 inch

c. The recommended maximum operating pressure shall be at least 150 psi at temperatures below 220 degrees F.

D. Felt and Neoprene Pipe Collars

1. Cushion Sleeve C-1

a. A felt or neoprene pad of minimum 1/4 inch thickness which has been treated to resist moisture, abrasion, and temperature, and to repel vermin which can be used in conjunction with hangers, pipe clamps and rolls to act as a noise and vibration isolator between piping and its supporting or suspension system.

b. Sleeve shall be split or hinged and shall possess an exterior metal shell to prevent crushing during installation.

2. Pipe Penetrations C-2

a. Pipe to wall or floor closures shall be modular, interlocking synthetic rubber seals shaped to continuously fill the annular space between the pipe and the wall or floor opening.

b. Links shall be loosely assembled with bolts to form a continuous rubber belt around the pipe with a pressure plate under each bolt head and nut.

c. Tightening the bolts shall cause the rubber sealing elements to expand and provide an absolutely water tight seal between the pipe and the wall or floor opening.

3. Pipe Penetrations C-3

a. Pipe to wall or floor closures shall be mechanical, interlocking rubber links working as a fire stop to continuously fill the annular space between the pipe and the wall or floor opening.

b. Provide U.L. listed intumescent formulation with up to a 2-hour fire protection rating.

c. Links shall be loosely assembled with bolts to form a continuous rubber link around the pipe.

d. Tightening the bolts shall cause the rubber sealing elements to expand and provide an absolutely water tight, fireproof seal between the pipe and the wall or floor opening.

2.3 SEISMIC RESTRAINTS

A. Equipment shall be fitted for the seismic control per the IBC Seismic Site Class Definition of the project site. This facility is considered a non-essential facility.

B. Seismic Restraint Type SR-1

1. Snubbers consisting of interlocking steel members (one attached to the equipment frame and the other attached to the building structure) restrained by neoprene rubber compounded to bridge bearing specifications.

2. Neoprene elements shall be replaceable and have minimum thickness of 3/4 inch at all points.

3. Restraints shall be installed with factory set clearances of 1/8 inch minimum to 1/4 inch maximum between steel and neoprene elements.

4. Snubbers shall be installed after the full equipment load is placed on the vibration isolators to ensure that the equipment will not contact the snubber during normal operation.

5. Snubbers shall be capable of withstanding loads up to 4g in all directions.

C. Seismic Restraint Type SR-2

1. Snubbers consisting of interlocking steel members (one attached to equipment frame and the other attached to the building structure) restrained by neoprene rubber compounded to bridge bearing specifications.

2. Neoprene elements shall be replaceable and have minimum thickness of 1/4 inch at all points.

3. Restraints shall be installed with factory set clearances of 1/8 inch minimum to 1/4 inch maximum between steel and neoprene elements.

4. Snubbers shall be installed after the full equipment load is placed on the vibration isolators to ensure that the equipment will not contact the snubber during normal operation.

5. Snubbers shall be capable of withstanding loads up to 1g in all directions.

D. Seismic Restraint Type SR-3

1. Slack cables rigidly attached to suspended equipment or piping.

2. Attachment to structure shall include an interlocking steel element with a minimum 1/4 inch thick neoprene pad between the interlocking steel members.

3. Cable shall be sized to accommodate dynamic loads up to 1g in all directions without failure.

4. Cables shall have 1/4 inch slack during normal operation of equipment and shall not compromise the efficiency of the vibration isolation hangers.

E. Seismic Housekeeping Pad Anchor, Type PA-1

1. Seismic housekeeping pad anchors shall be installed on all housekeeping pads. The Manufacturer shall size and select pad anchors and calculations shall be submitted and stamped by AM#04… aan Alaskan …AM#04 registered professional civil or structural engineer.

2.4 DUCTWORK LAGGING

A. Acoustic Insulation: 2 inch thick, 3 to 5 lb/cu ft density glass fiber or mineral wool insulation.

B. Covering: Plaster with surface weight minimum 4 lb/sq ft.

PART 3 - EXECUTION

3.1 RUSTPROOFING

A. All vibration isolation hardware shall be designed or treated for corrosion resistance.

B. Isolators exposed to the weather shall have steel parts zinc electroplated, PVC coated, plus a coating of neoprene or bitumastic paint. Aluminum components for outdoor installation shall be etched and painted with industrial grade enamel.

C. Nuts, bolts, and washers shall be zinc electroplated.

D. Structural steel bases are to be thoroughly cleaned of welding slag, primed with zinc chromate, and finished with two coats of industrial enamel.

3.2 INSTALLATION

A. Vibration Isolators

1. All mechanical equipment, ductwork and piping (except fire, cast iron waste, vent, and storm drains) shall be isolated from the building structure as specified herein AM#04… deleted text and tabulated in the vibration isolation schedule …AM#04 No motor driven or circulating fluid piping shall contact the building without isolation. All isolators shall be secured to the building structure unless AM#04…deleted text specifically called for in the vibration isolation specifications and schedulenoted otherwise. …AM#04 Provide a balanced set of isolators for each piece of equipment. Select isolators in accordance with equipment weight distribution to allow for no less than the static deflection specified. All isolators for a single piece of equipment shall have approximately equal spring deflection. A minimum of four isolators per unit is required unless otherwise indicated. The isolator adjusting bolt must be mounted vertically in the center of the spring. Housing must have a rubber grommet in the top allowing a minimum of 1/4 inch between the grommet and the adjustable bolt. AM#04… deleted text Use the type of isolator mounting base and seismic restraints that is indicated in the vibration isolation schedule.

…AM#04 Equipment must be mounted absolutely level. Each isolator must be numbered and color coded to show location. Code and color shall be marked on the plans, on each equipment isolator, and on each base to ensure proper placement. All isolators shall be clearly stamped or marked to show undeflected height and static deflection so that after the installation and adjustment, deflection under load may be verified to ensure loading is within specified range and isolation is being attained.

B. Piping

1. All piping carrying circulating fluids or pumped gases shall be isolated from the building structure with vibration isolators AM#04… deleted text as specified in the vibration isolation schedule. …AM#04 Piping shall not penetrate floating floors or vibration isolated ceilings unless specifically called for in the drawings. Use type C-2 or C-3 isolators for all piping that passes through the mechanical room floor, walls, or ceiling. The inside diameter of each wall or floor opening shall be sized as recommended by the manufacturer to fit the pipe, isolator and assure a watertight joint. A flexible neoprene connector type FC-1 or FC-2 is required at the inlet and discharge of all floor supported pumps. Flexible neoprene connections are also required at the connections to the chillers and cooling towers. Horizontally suspended piping shall be suspended from massive structural beams rather than slab diaphragms wherever possible. Do not support vibration isolated piping along with non-isolated piping on a common trapeze. Steel spring hanger boxes shall be rigidly mounted to the supporting structure--not located in the middle of the hanger rod. Rigid pipe anchors are not permitted in vibration isolated piping circuits. When pipe anchors are required, use type E-5. Use type SH hangers at top of pipe riser for vertical pipe risers greater than 30 feet in height. Unless otherwise indicated on drawings, support and anchor with type E-5 pipe clamps only at mid level. Provide type E-5 guides at other levels. Seismic restraints for vibration isolated piping shall be designed to restrict excessive lateral, vertical, and longitudinal motion without providing support of the piping during normal operation. These restraints shall not make rigid contact between piping and the building structure. Details of the seismic restraints must be included in the submittals. Design shall be approved and stamped by

AM#04… an Alaska registered professional …AM#04 civil or structural engineer.

C. Ductwork

1. Ductwork shall be constructed in accordance with applicable SMACNA standards. Flexible connections shall be provided between all fans and connecting ductwork. Support the duct just prior to or following the flexible connector to ensure proper alignment and to avoid binding the connector. Isolate duct penetrations of the floor, walls, and ceiling of all mechanical rooms as follows.

a. The hole in the floor, wall, or ceiling should be oversized so as to allow a 0.5 to 0.75 inch gap on each side of the duct. An 18 gauge sheet metal sleeve covering the entire perimeter of the hole should be plastered to the wall, ceiling, or floor to ensure an air-tight seal. If the duct penetrates a double wall, separate sleeves should be used on each side of the wall so as to have no direct connection between the walls.

b. The gap between the penetrating duct and sleeve should be packed with fiber insulation and also sealed on both outer sides with a resilient acoustical sealant. Provide fire rated insulation and sealants when penetrating rated walls or floors. Refer to Section 07900.

D. Lag ductwork, where indicated by wrapping with insulation and covering. Apply covering to be airtight.

Do not attach covering rigidly to ductwork.

E. Attach ductwork to acoustic louvers with flexible duct connections.

F. Install isolation for motor driven equipment.

G. Bases:

1. Set steel bases for 1 inch clearance between housekeeping pad and base.

H. Adjust equipment level.

I. Install spring hangers without binding.

J. On closed spring isolators, adjust so side stabilizers are clear under normal operating conditions.

K. Prior to making piping connections to equipment with operating weights substantially different from installed weights, block up equipment with temporary shims to final height. When full load is applied, adjust isolators to load to allow shim removal.

L. Provide pairs of horizontal limit springs on fans with more than 6.0 inch static pressure, and on hanger supported, horizontally mounted axial fans.

M. Provide resiliently mounted equipment, piping, and ductwork with seismic snubbers. Provide each inertia base with minimum of four seismic snubbers located close to isolators. Snub equipment designated for post disaster use to 0.05 inch maximum clearance. Provide other snubbers with clearance between 0.15 inch and 0.25 inch.

N. Support piping connections to isolated equipment resiliently as follows:

1. Up to 4 inch Diameter: First three points of support.

2. 5 to 8 inch Diameter: First four points of support.

3. 10 inch Diameter and Over: First six points of support.

4. Select three hangers closest to vibration source for minimum 1.0 inch static deflection or static deflection of isolated equipment. Select remaining isolators for minimum 1.0 inch static deflection or 1/2 static deflection of isolated equipment.

3.3 FIELD QUALITY CONTROL

A. Inspect isolated equipment after installation and submit report. Include static deflections.

END OF SECTION

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SECTION 230593

TESTING, ADJUSTING, AND BALANCING FOR HVAC

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions, Division 01 Specification Sections, and Section 230000 – General HVAC

Requirements, apply to this Section.

1.2 SUMMARY

A. Section Includes:

1. Balancing Air Systems:

a. Variable-air-volume systems.

2. Balancing Hydronic Piping Systems:

a. Variable-flow hydronic systems.

3. Balancing steam systems.

4. Testing, Adjusting, and Balancing Equipment:

a. Heat exchangers.

b. Motors.

c. Heat-transfer coils.

5. Testing, adjusting, and balancing existing systems and equipment.

6. Duct leakage tests.

7. Control system verification.

1.3 DEFINITIONS

A. AABC: Associated Air Balance Council.

B. BAS: Building automation systems.

C. NEBB: National Environmental Balancing Bureau.

D. TAB: Testing, adjusting, and balancing.

E. TABB: Testing, Adjusting, and Balancing Bureau.

F. TAB Specialist: An independent entity meeting qualifications to perform TAB work.

G. TDH: Total dynamic head.

1.4 PREINSTALLATION MEETINGS

A. TAB Conference: Conduct a TAB conference at Project site after approval of the TAB strategies and procedures plan to develop a mutual understanding of the details. Provide a minimum of 14 days' advance notice of scheduled meeting time and location.

1. Minimum Agenda Items:

a. The Contract Documents examination report.

b. The TAB plan.

c. Needs for coordination and cooperation of trades and subcontractors.

d. Proposed procedures for documentation and communication flow.

1.5 SUBMITTALS

A. LEED Submittals:

1. Air-Balance Report for Prerequisite IEQ 1: Documentation indicating that work complies with ASHRAE 62.1, Section 7.2.2 - "Air Balancing."

2. TAB Report for Prerequisite EA 2: Documentation indicating that work complies with

ASHRAE/IESNA 90.1, Section 6.7.2.3 - "System Balancing."

B. Qualification Data: Within 90 days of Contractor's Notice to Proceed, submit documentation that the TAB specialist and this Project's TAB team members meet the qualifications specified in "Quality Assurance" Article.

C. Contract Documents Examination Report: Within 90 days of Contractor's Notice to Proceed, submit the Contract Documents review report as specified in Part 3.

D. Strategies and Procedures Plan: Within 90 days of Contractor's Notice to Proceed, submit TAB strategies and step-by-step procedures as specified in "Preparation" Article.

E. System Readiness Checklists: Within 90 days of Contractor's Notice to Proceed, submit system readiness checklists as specified in "Preparation" Article.

F. Examination Report: Submit a summary report of the examination review required in

"Examination" Article.

G. Certified TAB reports.

H. Sample report forms.

I. Instrument calibration reports, to include the following:

1. Instrument type and make.

2. Serial number.

3. Application.

4. Dates of use.

5. Dates of calibration.

1.6 QUALITY ASSURANCE

A. TAB Specialists Qualifications: Certified by AABC, NEBB or TABB.

1. TAB Field Supervisor: Employee of the TAB specialist and certified by AABC NEBBor

TABB.

2. TAB Technician: Employee of the TAB specialist and certified by AABCNEBB or

TABB as a TAB technician.

B. Instrumentation Type, Quantity, Accuracy, and Calibration: Comply with requirements in

ASHRAE 111, Section 4, "Instrumentation."

C. ASHRAE Compliance: Applicable requirements in ASHRAE 62.1, Section 7.2.2 - "Air

Balancing."

D. ASHRAE/IESNA Compliance: Applicable requirements in ASHRAE/IESNA 90.1, Section 6.7.2.3 - "System Balancing."

PART 2 - PRODUCTS (Not Applicable)

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine the Contract Documents to become familiar with Project requirements and to discover conditions in systems designs that may preclude proper TAB of systems and equipment.

B. Examine installed systems for balancing devices, such as test ports, gage cocks, thermometer wells, flow-control devices, balancing valves and fittings, and manual volume dampers. Verify that locations of these balancing devices are applicable for intended purpose and are accessible.

C. Examine the approved submittals for HVAC systems and equipment.

D. Examine design data including HVAC system descriptions, statements of design assumptions for environmental conditions and systems output, and statements of philosophies and assumptions about HVAC system and equipment controls.

E. Examine ceiling plenums and underfloor air plenums used for supply, return, or relief air to verify that they are properly separated from adjacent areas. Verify that penetrations in plenum walls are sealed and fire-stopped if required.

F. Examine equipment performance data including fan and pump curves.

1. Relate performance data to Project conditions and requirements, including system effects that can create undesired or unpredicted conditions that cause reduced capacities in all or part of a system.

2. Calculate system-effect factors to reduce performance ratings of HVAC equipment when installed under conditions different from the conditions used to rate equipment performance. To calculate system effects for air systems, use tables and charts found in

AMCA 201, "Fans and Systems," or in SMACNA's "HVAC Systems - Duct Design."

Compare results with the design data and installed conditions.

G. Examine system and equipment installations and verify that field quality-control testing, cleaning, and adjusting specified in individual Sections have been performed.

H. Examine test reports specified in individual system and equipment Sections.

I. Examine HVAC equipment and verify that bearings are greased, belts are aligned and tight, filters are clean, and equipment with functioning controls is ready for operation.

J. Examine terminal units, such as variable-air-volume boxes, and verify that they are accessible and their controls are connected and functioning.

K. Examine strainers. Verify that startup screens have been replaced by permanent screens with indicated perforations.

L. Examine control valves for proper installation for their intended function of throttling, diverting, or mixing fluid flows.

M. Examine heat-transfer coils for correct piping connections and for clean and straight fins.

N. Examine system pumps to ensure absence of entrained air in the suction piping.

O. Examine operating safety interlocks and controls on HVAC equipment.

P. Report deficiencies discovered before and during performance of TAB procedures. Observe and record system reactions to changes in conditions. Record default set points if different from indicated values.

3.2 PREPARATION

A. Prepare a TAB plan that includes the following:

1. Equipment and systems to be tested.

2. Strategies and step-by-step procedures for balancing the systems.

3. Instrumentation to be used.

4. Sample forms with specific identification for all equipment.

B. Perform system-readiness checks of HVAC systems and equipment to verify system readiness for TAB work. Include, at a minimum, the following:

1. Airside:

a. Verify that leakage and pressure tests on air distribution systems have been satisfactorily completed.

b. Duct systems are complete with terminals installed.

c. Volume and fire dampers are open and functional.

d. Clean filters are installed.

e. Fans are operating, free of vibration, and rotating in correct direction.

f. Variable-frequency controllers' startup is complete and safeties are verified.

g. Automatic temperature-control systems are operational.

h. Ceilings are installed.

i. Windows and doors are installed.

j. Suitable access to balancing devices and equipment is provided.

2. Hydronics:

a. Verify leakage and pressure tests on water distribution systems have been satisfactorily completed.

b. Piping is complete with terminals installed.

c. Water treatment is complete.

d. Systems are flushed, filled, and air purged.

e. Strainers are pulled and cleaned.

f. Control valves are functioning per the sequence of operation.

g. Shutoff and balance valves have been verified to be 100 percent open.

h. Pumps are started and proper rotation is verified.

i. Pump gage connections are installed directly at pump inlet and outlet flanges or in discharge and suction pipe prior to valves or strainers.

j. Variable-frequency controllers' startup is complete and safeties are verified.

k. Suitable access to balancing devices and equipment is provided.

3.3 GENERAL PROCEDURES FOR TESTING AND BALANCING

A. Perform testing and balancing procedures on each system according to the procedures contained in AABC's "National Standards for Total System Balance" NEBB's "Procedural Standards for

Testing, Adjusting, and Balancing of Environmental Systems" SMACNA's "HVAC Systems -

Testing, Adjusting, and Balancing" and in this Section.

B. Cut insulation, ducts, pipes, and equipment cabinets for installation of test probes to the minimum extent necessary for TAB procedures.

1. After testing and balancing, patch probe holes in ducts with same material and thickness as used to construct ducts.

C. Mark equipment and balancing devices, including damper-control positions, valve position indicators, fan-speed-control levers, and similar controls and devices, with paint or other suitable, permanent identification material to show final settings.

D. Take and report testing and balancing measurements in inch-pound (IP) units.

3.4 GENERAL PROCEDURES FOR BALANCING AIR SYSTEMS

A. Prepare test reports for both fans and outlets. Obtain manufacturer's outlet factors and recommended testing procedures. Cross-check the summation of required outlet volumes with required fan volumes.

B. Prepare schematic diagrams of systems' "as-built" duct layouts.

C. For variable-air-volume systems, develop a plan to simulate diversity.

D. Determine the best locations in main and branch ducts for accurate duct-airflow measurements.

E. Check airflow patterns from the outdoor-air louvers and dampers and the return- and exhaust-air dampers through the supply-fan discharge and mixing dampers.

F. Locate start-stop and disconnect switches, electrical interlocks, and motor starters.

G. Verify that motor starters are equipped with properly sized thermal protection.

H. Check dampers for proper position to achieve desired airflow path.

I. Check for airflow blockages.

J. Check condensate drains for proper connections and functioning.

K. Check for proper sealing of air-handling-unit components.

L. Verify that air duct system is sealed.

3.5 PROCEDURES FOR VARIABLE-AIR-VOLUME SYSTEMS

A. Adjust the variable-air-volume systems as follows:

1. Verify that the system static pressure sensor is located two-thirds of the distance down the duct from the fan discharge.

2. Verify that the system is under static pressure control.

3. Select the terminal unit that is most critical to the supply-fan airflow. Measure inlet static pressure, and adjust system static pressure control set point so the entering static pressure for the critical terminal unit is not less than the sum of the terminal-unit manufacturer's recommended minimum inlet static pressure plus the static pressure needed to overcome terminal-unit discharge system losses.

4. Calibrate and balance each terminal unit for maximum and minimum design airflow as follows:

a. Adjust controls so that terminal is calling for maximum airflow. Some controllers require starting with minimum airflow. Verify calibration procedure for specific project.

b. Measure airflow and adjust calibration factor as required for design maximum airflow. Record calibration factor.

c. When maximum airflow is correct, balance the air outlets downstream from terminal units.

d. Adjust controls so that terminal is calling for minimum airflow.

e. Measure airflow and adjust calibration factor as required for design minimum airflow. Record calibration factor. If no minimum calibration is available, note any deviation from design airflow.

f. When in full cooling or full heating, ensure that there is no mixing of hot-deck and cold-deck airstreams unless so designed.

g. On constant volume terminals, in critical areas where room pressure is to be maintained, verify that the airflow remains constant over the full range of full cooling to full heating. Note any deviation from design airflow or room pressure.

5. After terminals have been calibrated and balanced, test and adjust system for total airflow. Adjust fans to deliver total design airflows within the maximum allowable fan speed listed by fan manufacturer.

a. Set outside-air, return-air, and relief-air dampers for proper position that simulates minimum outdoor-air conditions.

b. Set terminals for maximum airflow. If system design includes diversity, adjust terminals for maximum and minimum airflow so that connected total matches fan selection and simulates actual load in the building.

c. Where duct conditions allow, measure airflow by Pitot-tube traverse. If necessary, perform multiple Pitot-tube traverses to obtain total airflow.

d. Where duct conditions are not suitable for Pitot-tube traverse…