RPR Facilities Facades, MULTI

PROJECT QUUG 25-1012 ADD - 1 ADDENDUM TO THE CONSTRUCTION CONTRACT SPECIFICATION #01 1. The purpose of this addendum is to clarify any doubts that may arise regarding the interpretation or execution of the requirements of this contract, which are detailed below: 1.1 SECTION 01 11 00 SCOPE OF WORK a.- The specification requires in section 01 11 00 Scope of Work, paragraph 1.3, CLIN 3 Building 221 (Additive Item No. 02), subparagraph 1.3.7, item (17): Enamel Painted Steel and Galvanized steel surfaces with synthetic enamel coats. b.- In this case, it must be interpreted that enamel is to be applied to all surfaces, whether steel or galvanized steel, including the entire sandwich panel assembly. This requirement is in fact established in legend callout No. 17 of drawing A203, which marks all elevations of the building. Likewise, the government’s estimated quantity of 383.92 sm shown on that drawing confirms that the treatment applies to the entire surface of the building. 1.2 SECTION 09 90 00 PAINTS AND COATINGS a.- The specification requires in Section 09 90 00 Paints and Coating, Paragraph 2.2.2 Intermediate and Final Coat, subparagraphs 2.2.2.1 Steel Surfaces and 2.2.2.2 Galvanized Steel Surfaces, to be painted with Two component polyurethane acrylic enamel. b.- The above-mentioned treatment is what must be applied to referred surfaces, no matter if those are steel or galvanized steel. c.- Section 09 90 00 Paintings and Coating. Paragraph 3.6 Table of Painted requires as follow: Steel Surface: Coat Film thickness dry Primer Synthetic priming base on modified 35 micras alkyd resins. Intermediate Modified alkyd resin base enamel 30 micras Top coat Modified alkyd resin base enamel 30 micras Galvanized Steel Surface: Coat Material Film thickness dry Primer Phosphate and pasivator primer of two 8-10 micras components with corrosion inhibitors and -- 1 of 4 -- PROJECT QUUG 25-1012 ADD - 2 chromate-free Intermediate Modified alkyd resin base enamel 30 micras Top coat Modified alkyd resin base enamel 30 micras Wood Surfaces: Film thickness dry/ Coat Material Efficiency Primer Alkyd type sealant 8-10 micras Intermediate Synthetic base semi-open pore varnish 10-16 m²/l with insecticide and fungicide Top coat Synthetic base semi-open pore varnish 10-16 m²/l with insecticide and fungicide Interior Plaster, cement, masonry and other surfaces. Marked on the drawings as EP: Coat Material Efficiency Primer - - Intermediate Two component epoxi paint 6-7 m²/litre Top coat Two component epoxi paint 6-7 m²/litre Interior Plaster, cement, masonry and other surfaces. Marked on the drawings as P or PV or PC: Coat Material Efficiency Primer 10% water + 90% Vynil plastic paint 4,5 m²/l Intermediate Vynil plastic paint 5 m²/litre Top coat Vynil plastic paint 5 m²/litre Exterior Cement, concrete, brickwork and similar surface: Coat Material Efficiency Primer 15% water + 85% Vynil plastic paint 4,25 m²/litre Intermediate Vynil plastic paint 5 m²/litre Top coat Vynil plastic paint 5 m²/litre Concrete Floor: Coat Material Efficiency Primer - - Intermediate Water epoxi paint 6,2 m²/litre Top coat Water epoxi paint 6,2 m²/litre -- 2 of 4 -- PROJECT QUUG 25-1012 ADD - 3 d.- The purpose of this table is to establish the thickness of the paints and coatings when dry as well as the efficiency, and not the material, therefore the table shall be considered as follow: Steel Surface: Coat Film thickness dry Primer 35 micras Intermediate 30 micras Top coat 30 micras Galvanized Steel Surface: Coat Film thickness dry Primer 8-10 micras Intermediate 30 micras Top coat 30 micras Wood Surfaces: Film thickness dry/ Coat Efficiency Primer 8-10 micras Intermediate 10-16 m²/l Top coat 10-16 m²/l Interior Plaster, cement, masonry and other surfaces. Marked on the drawings as EP: Coat Efficiency Primer Intermediate 6-7 m²/litre Top coat 6-7 m²/litre Interior Plaster, cement, masonry and other surfaces. Marked on the drawings as P or PV or PC: Coat Efficiency Primer 4,5 m²/l Intermediate 5 m²/litre Top coat 5 m²/litre Exterior Cement, concrete, brickwork and similar surface: Coat Efficiency Primer 4,25 m²/litre -- 3 of 4 -- PROJECT QUUG 25-1012 ADD - 4 Intermediate 5 m²/litre Top coat 5 m²/litre Concrete Floor: Coat Efficiency Primer Intermediate 6,2 m²/litre Top coat 6,2 m²/litre 2. The remainder of the specifications, and all matters not expressly addressed in this Addendum, shall remain as previously published. END OF ADDENDUM -- 4 of 4 --