Rodarte Construction Inc Everett Station Parking Expansion

I 1 off blast shall bereared in accordance with SSPC-SP 3, Power Tool Cleaning, p p as 2 allowed by the Engineer. 3 4 The first sentence of the third paragraph is revised to read: 5 6 Following brush-off blast cleaning, the Contractor shall perform spot abrasive blast cleaning 7 in accordance with SSPC-SP 6, Commercial Blast Cleaning. 8 9 The second to last sentence of the third paragraph is revised to read: 10 11 For small areas, as allowed by the Engineer, the Contractor may substitute cleaning in 12 accordance with SSPC-SP 15, Commercial Grade Power Tool Cleaning. 13 14 6-07.3(10)G Treatment of Pack and Rust Gaps 15 The second paragraph is revised to read: 16 17 Pack rust forming a gap between steel surfaces of%16 to 1/4 inch shall be cleaned to a depth 18 of at least one half of the gap width. The gaps shall be cleaned and prepared in accordance 19 with SSPC-SP6. The cleaned gap shall be treated with rust penetrating sealer, prime 20 coated, and then caulked to form a watertight seal along the top edge and the two sides of 21 the steel pieces involved, using the rust penetrating sealer and caulk as accepted by the 22 Engineer. The bottom edge or lowest edge of the steel pieces involved shall not be caulked. 23 24 The third paragraph is supplemented with the following: 25 26 Caulk shall be a single-component urethane sealant conforming to Section 9-08.7. 27 28 The fifth paragraph is revised to read: 29 30 At locations where gaps between steel surfaces exceed 1/4 inch, the Contractor shall clean 31 and prepare the gap in accordance SSPC-SP6, apply the rust penetrating sealer, apply the 32 prime coat, and then fill the gap with foam backer rod material as accepted by the 33 Engineer. The foam backer rod material shall be of sufficient diameter to fill the crevice or 34 gap. The Contractor shall apply caulk over the foam backer rod material to form a 35 watertight seal. 36 37 This section is supplemented with the following new paragraph: 38 39 Caulk and backer rod, if needed, shall be placed prior to applying the top coat. The 40 Contractor, with the concurrence of the Engineer, may apply the rust penetrating sealer 41 after application of the prime coat provided the primer is removed in the areas to be sealed. 42 The areas to be sealed shall be re-cleaned and re-prepared in accordance with SSPC-SP6. 43 44 6-07.3(10)H Paint System 45 The first paragraph is revised to read: 46 47 The paint system applied to existing steel surfaces shall consist of the following five-coat 48 system: 49 50 Option 1 (component based system): City of Everett Page AM-52 Amendments Everett Station 80 Stall Parking Expansion June 2019 1