Attachment_5_-_Addendum_1_dated_24_Aug_15.pdf

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Repair Weapons Station Housing Sewer Mains
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FA4418-15-R-0023
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Attachment 5 Addendum 1 dated 24 August 2015

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ADDENDUM #1

PROJECT: RPR, Sewer Mains, Housing Area 2 (DKGV 11-2057)

JOINT BASE CHARLESTON – WEAPONS STATION

(FA4418-15-R-0023)

24 Aug 2015

The Contractor shall perform the following as described by this Addendum.

1. Amend Specification Section 22 05 83.63 Para 2.2.2 as follows:

Delete:

2.2.2 Resin

Provide an epoxy resin impregnated, cured tube that is resistant to shrinkage, corrosion, oxidation, and is resistant to abrasion from solids, grit, sand in rainwater, and is solvent free.

Use a resin with proven resistance to storm water and ultra-violet light (sunlight) at any stage prior to installation. Polyester or vinyl ester resins are not acceptable.

Ensure the proposed resin system does not contain silicones, stearates, and/or natural waxes that would adversely affect the adhesives properties or any other chemical or physical properties of the CIPP liner.

Add:

2.2.2 Resin

The resin system shall be a corrosion resistant polyester, vinyl ester, or epoxy system including all required catalysts, initiators that when cured within the tube create a composite that satisfies the requirements of ASTM F1216, ASTM D5813 and ASTM F1743 and those which are to be utilized in the submitted and approved design of the CIPP for this project.

The resin shall produce a CIPP that will comply with the structural and chemicals resistance requirements of ASTM F1216.

2. Amend Spec Section 22 05 83.63 Para 3.1.4.3 to:

Delete:

3.1.4.3 Curing

Inflate the bladder using compressed air and leave the liner in place until the resin curing cycle is complete. Curing occurs at ambient temperature within one hour.

When the curing process is complete, release the pressure and pull out the inflation bladder.

Ensure the cured composite liner remains in place within the host pipe and provides a smooth bore interior that conforms to the existing pipe. Ensure the tube is continuous in length, wall thickness, and is uniform. Reline any existing defects in the original pipe.

FA4418-15-R-0023

Attachment 5, Addendum 1 24 August 2015 1 of 2

Add:

3.1.4.3 Curing

Curing of the resin system shall be as per the Manufacturer of the CIPP product. The temperatures achieved and the duration of holding those temperatures shall be per the Manufacturer’s established procedures. The curing process shall take into account the existing pipe material and the resin system being used.

FA4418-15-R-0023

Attachment 5, Addendum 1 24 August 2015 2 of 2

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