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Amendment 3: Answers to Questions 0003

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A PDF document (76 KB) attached to GRCA 257282 - Replace Wastewater Plant at South Ri, from the National Park Service. Due Nov 18, 2026, 1:00 PM (UTC-7).

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GRCA 257282, Replace South Rim Wastewater Treatment Plant

140P2026R0101 /
Amendment 03/
09.02.2026
Question No.

Sheet or
Reference

Question

Response

Ref. 25S1020 Process Tanks Structural Lower Level Plan; What size are the (2) columns 10’- The columns are W12x45. Callout provided by 0’ North of Line 1?
markupon drawing 25S1020 (attached to Addendum
3).

Ref. 1/25S5001 Moment Connection; The perpendicular beam connections to the column New connection detail and callouts provided for the
web are called out as 0512-020. These beams are not erectable due to the presence of the 3/8” beam to column web connection. Markups provided on stiffeners above and below the beam connection. Please advise. drawings 25S1040 and 25S5001 (attached to
Addendum 3).

Ref. 1/87S1030 “Armor Angles”; What size are the angles? Size and spacing of the headed studs?

Use SST L3x3x¼. Markup provided for drawing
87S1030 (attached to Addendum 3).

Ref. 09 90 00 Painting and Coatings; We assume all structural steel is to be shop primed with Steel roof trusses and monorails shall be shop primed System No. 5 Exposed Metal – Mildly Corrosive other than the steel roof trusses which are to with System No. 4 Exposed Metal – Highly Corrosive. be shop primed with System No. 4 Exposed Metal – Highly Corrosive. Please confirm. All other structural steel shall be shop primed with

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