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PART 3 EXECUTION <br /> 3.1 E�S:AMINATION <br /> A. Verify site conditions under provisions of Section 01100. <br /> B. Verify openings are ready to receive the work of this section. <br /> , 3.2 PREPARATION <br /> A. Clean substrate surfaces of dirt, dust, grease, oil, •loose material, or other matter <br /> which may affect bond of firestopping material. <br /> B. Remove incompatible materials which may affect bond. <br /> C. Install damming materials to anest liquid material leakage. <br /> 3.3 APPLICATION <br /> � A. Install material at walls or partition openings which contain penetrating sleeves, <br /> piping, ductwork, conduit and other items, requirmg firestoppmg. <br /> �"",,� B. Apply primer and materials in accordance with manufacturer's instructions. <br /> C. Apply firestopping material in sufficient thickness to achieve rating. <br /> D. Compress fibered material to achieve a density of 40 percent of its uncompressed <br /> density. <br /> �� E. Place foamed material in layers to ensure homogenous density, filling cavities and <br /> spaces. Place sealant to completely seal junctions with adjacent dissimilar <br /> materials. <br /> � F. Place intumescent coating in sufficient coats to achieve rating required. <br /> �� 3.4 CLEANING <br /> � A. Clean Work under provisions of Section 01700. <br /> B. Clean adjacent surfaces of firestopping materials. <br /> �� 3.5 PROTECTION OF F11�1ISHED WORK <br /> A. Protect finished Work under provisions of Section 01200. <br /> B. Protect adjacent surfaces from damage by material installation. <br /> � 6 �l'�11L1LES <br /> A. See Wall and Partition types, floor and ceiling assemblies for relevant applications. <br /> END OF SECTION <br /> �� Division 7-Section 07270 <br /> Page 3 of 3 <br /> �� <br />