RFP #07-2015 Immokalee Reservation WWTP Improvements ADDENDUM NO. 6 Page 1 of 3 SEMINOLE TRIBE OF FLORIDA PUBLIC WORKS DEPARTMENT RFP #07-2015 CONSTRUCTION SERVICES IMMOKALEE RESERVATION WASTEWATER TREATMENT PLANT IMPROVEMENTS 435 EAST EUSTIS AVENUE IMMOKALEE, FLORIDA PROJECT #14IM-WW-0166 __________________________________________________________________________ ADDENDUM NUMBER SIX July 2, 2015 __________________________________________________________________________ The following changes, additions, and/or deletions are hereby made a part of the Request for Proposal documents for the Construction Services Immokalee Reservation – Wastewater Treatment Plant Improvements Project for the Seminole Tribe of Florida (STOF), as fully and completely as if the same were fully set forth therein: EXHIBITS A. EXHIBIT G - BONDS AND CERTIFICATION OF ABILITY TO OBTAIN PERFORMANCE BONDS DELETE in its entirety EXHIBIT G and replace with the EXHIBIT G attached to this addendum. TECHNICAL SPECIFICATIONS A. SECTION 05830 - BEARING DEVICES AND ANCHORING INSERT in its entirety SECTION 05830 - BEARING DEVICES AND ANCHORING marked Addendum No. 6, attached. GENERAL A. Question: On sheet S-42, the Masonry Plate Bearing Surface Preparation detail (1509439) refers to specification section 05830 for bearing device requirements and surface preparation. Where is specification 05830? Answer: Refer to SECTION 05830 - BEARING DEVICES AND ANCHORING included in this addendum. B. Question: Under the General Structural Notes section on sheet S-1 the roof live load is listed as 20 psf, the standard value for this parameter. Specification 13121-1.04.B.3 states that the roof live load is to be 30 psf. Please confirm it is acceptable to use the 20 psf roof live load as shown on the plans? Answer: Use of 20 psf roof live load per notes on drawing S-1 is acceptable.
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The following changes, additions, and/or deletions are hereby made a part of the Request for Proposaldocuments for the Construction Services Immokalee Reservation – Wastewater Treatment PlantImprovements Project for the Seminole Tribe of Florida (STOF), as fully and completely as if the samewere fully set forth therein:
EXHIBITS
A. EXHIBIT G - BONDS AND CERTIFICATION OF ABILITY TO OBTAIN PERFORMANCEBONDS
DELETE in its entirety EXHIBIT G and replace with the EXHIBIT G attached to thisaddendum.
TECHNICAL SPECIFICATIONS
A. SECTION 05830 - BEARING DEVICES AND ANCHORING
INSERT in its entirety SECTION 05830 - BEARING DEVICES AND ANCHORINGmarked Addendum No. 6, attached.
GENERAL
A. Question: On sheet S-42, the Masonry Plate Bearing Surface Preparation detail (1509439)refers to specification section 05830 for bearing device requirements and surface preparation.Where is specification 05830?
Answer: Refer to SECTION 05830 - BEARING DEVICES AND ANCHORING included in thisaddendum.
B. Question: Under the General Structural Notes section on sheet S-1 the roof live load is listed as20 psf, the standard value for this parameter. Specification 13121-1.04.B.3 states that the rooflive load is to be 30 psf. Please confirm it is acceptable to use the 20 psf roof live load as shownon the plans?
Answer: Use of 20 psf roof live load per notes on drawing S-1 is acceptable.
C. Question: Sheet S-1 shows the pressure coefficient (GCpi) at the Chemical Facilities building tobe 0, which corresponds to an “open” building classification. The specifications section 13121-1.04B.4 states that the building is to be “partially enclosed.” Please confirm that it is acceptableto design the building as “open” per the plans given that the buildings are open and not partiallyenclosed?
Answer: Design of the Chemical Facilities Building as “open” with an internal pressurecoefficient of 0 is acceptable.
D. Question: Please confirm all Pre-Engineered Metal Building Systems listed on sheet S-1 with aroof live load of “N/A” are to be designed for a roof live load of 20 psf.
Answer: All pre-engineered metal building systems listed on sheet S-1 are to be designed for aroof live load of 20 psf.
E. Question: Please provide the enclosure classification of those buildings listed on sheet S-1 witha value of “N/A” (i.e. RAS/WAS Pump Station buildings and Blower Pad building).
Answer: Enclosure classification of RAS/WAS Pump Station Building and Blower Pad Buildingis “open”.
F. Question: Sheet S-25 shows the Blower Pad building with tapered columns and rafters.Specification section 13121-2.02.A.2 calls for uniform depth columns and tapered rafters.Please confirm that tapered columns are acceptable per the plans.
Answer: Use of tapered columns for the Blower Pad Building is acceptable.
G. Question: The Sludge Dewatering Area covering is not listed on sheet S-1. Please provide theroof live load and enclosure classification.
Answer: For Sludge Dewatering Area cover, roof live load is 20 psf and enclosure classificationis “open”.
H. Question: Specification 13121-2.04.A states that all bolted connections shall have at least twobolts minimum. This is not practical for the connections of the main frame flange braces. Pleaseconfirm that it is acceptable for the flange braces to use a single bolt connection at their ends.
Answer: Use of single bolted connections for the main frame flange braces is acceptable.
I. Question: The specified roof panel for the Pre-Engineered Metal Building systems is a non-structural roofing panel intended for conventional roofing. The manufacturer does notrecommend the ML200 panel for this use. Please confirm the use of a 24 gage steel standingseam roof installed over purlins is acceptable for design of the Pre-Engineered Metal Buildingsystems in lieu of the ML200 panels installed over a metal deck.
Answer: 24 gauge standing seam roof installed over purlins is acceptable. Refer to AddendumNo. 4.
J. Question: Specification 13121-2.03.A.1 calls for the outer flanges of girts and purlins to befactory punched holes for panel connections. Please confirm the use of self-drilling screws forpanel attachment is also acceptable.
Answer: Use of self-drilling screws for panel attachment is acceptable.
K. Question: Specification 13121-2.10 calls for the color selection of the metal roof and trims to bea custom color. Will all the Pre-Engineered Metal Building Systems be using the same color?
Answer: All metal building systems will be the same color.
L. Question: I would like to request the following exception be made for the Thermal DispersionGas Flow Meters Section 17710. Specifically:
The specification in 3.01 (B) at 17710-2 identifies the required flowmeter start-up field service,and is as follows:
“PART 3 -- EXECUTION3.01 REQUIREMENTS
A. Refer to Section 17700, Part 3.
B. Provide manufacturer’s representative services to perform a duct traversal at a minimum of 5flow rates over the specified flow range to field-determine the flow curve for the most consistentaccuracy over the specified flow range. Submit a report detailing accuracy calculations. Refer tomechanical sheets for piping configuration.”
This field service requires the contractor to install two (2) 1.50" FNPT female threaded ports aminimum of two feet upstream of each of the ST98 flowmeters, one at 12 O'clock and one ateither 3 or 9 O'clock. Both ports should include installed 1.50" FULL PORT isolation ball valves.FCI requires a minimum of eight feet headroom for each of the calibration ports. The FCI fieldservices pricing will be based on the actual travel and accommodations expenses, and requiredtravel and site-time to perform the services.
Due to the high cost FCI proposes that an exception to the field pipe traverse in 3.01 (B) at17710-2, and provide a Vortab VIP flow conditioner and Model ST98 flowmeter that includesNIST calibration with a VIP in FCI's cal lab. When installed properly the installed ST98 and VIPflow conditioner should match the stated ST98 flow accuracy since the gas flow profile in thefield should match that as in the cal lab.
Thus no field traverse would be required at installation and at no time thereafter since the gasflow measurement uncertainty due to upstream and downstream flow disturbances have beeneliminated with the VIP calibrated ST98 flowmeter. A further discussion of the VIP flowconditioner is at pages 2 and 3 of the attached Vortab brochure.
Answer: No exceptions to shall be made to Section 11710 Part 3.01 Item B.
M. Question: Please confirm if a Letter of Surety for bonding purposes is required?
Answer: Yes, a Letter of Surety is required.
Acknowledge receipt of this Addendum by inserting its number and date on the Proposal.
SEMINOLE TRIBE OF FLORIDA
Jacqueline GonzalezContract Specialist
Exhibit G - Bond Form Project No.: 13-BR-SE-0009
EXHIBIT G BONDS AND CERTIFICATION OF ABILITY TO OBTAIN
Min. tear resistance, ASTM D624, Die C (lb/in of thickness)
180 200
Hardness, ASTM D2240 (points) 50±5 70±5
Min. tensile strength, ASTM D412 (average psi of longitudinal and transverse)
2,500 2,500
Min. ultimate elongation (%) 400 300
2. The compressive deflection tested in accordance with ASTM D575, Method
A, shall be as follows:
a. Laminated Pads: The maximum compression deflection shall be 5 and 7 percent of the total rubber thickness at loads of 500 and 800 pounds per square inch, respectively. The maximum shear resistance shall be 50 pounds per square inch of the plan area at 25 percent shear deformation at –20°F. Test pads shall be subjected to a compressive load of 1.5 times the maximum design load without visible damage to the bearing.
b. Nonlaminated Pads: When loaded within 300 to 800 pounds per square inch, material shall show a compressive deflection within 20 percent of that given in the charts of Method A, interpolating for actual measured hardness.
3. Changes in Original Physical Properties: When pads are oven aged 70
hours at 212°F in accordance with ASTM D573, changes shall not be more
than the following:
Property Value
Hardness (points change) 0 to +15
Tensile strength (% change) ±15
Ultimate elongation (% change) -40
4. Extreme Temperature Characteristics: Compression set under constant
deflection, ASTM D395, Method B, 22 hours at 212°F, shall not be more
than 35 percent. With the low-temperature brittleness test, ASTM D746,
breaks shall not occur above –20°F.
5. Ozone Cracking Resistance: Upon exposure to 100 parts per million of
ozone in air by volume at a strain of 20 percent and a temperature of
100±2°F in a test otherwise in accordance with ASTM D1149, cracks shall
not develop within 100 hours. Samples shall be wiped with solvent before
the test to remove traces of surface impurities.
6. Oil Swell: The volume change shall not be more than +120 percent when
tested in accordance with ASTM D471 with ASTM Oil No. 3, 70 hours at