A06_0040607429_Specs_Boardwalk_Sprague_Steel_Final_31Jan2023.pdf

ROMO FY23 Structural Sprague Lake Boardwalk

Description: Steel I-beams and bracing needed for the construction of the Sprague Lake Boardwalk. All components shall be fabricated and prepared according to the engineer’s specifications provided in the final Sprague Lake boardwalk layout. Each fabricated part/component shall be test fit & assembled at the facility prior to any parts being primed, painted, or shipped to customer. The scope of work includes all labor costs for cutting, drilling, welding, and assembly/disassembly (during test fit) of all listed parts/components.

Item: ASTM A992, Grade 50 steel wide flange beams and ASTM A36 steel bracing and plates.

All steel shall be new condition and meet all listed requirements for grade/astm rate. All steel shall be accompanied by MTR paperwork for mill batch, and information.

Definitions

Structural Steel: Elements of the structural frame indicated on Drawings fabricated in accordance with AISC 303, "Code of Standard Practice for Steel Buildings and Bridges."

Materials

A. STRINGERS

a. 26 – W10”x15# I-beams

− Each cut to length ranging from 173.25"- 233.75" per drawings.

− Each beam shall have a notched/coped top flange & web to clear W12"

− Each beam shall have (12-qty) 13/16" holes through webs @ W6" beam intersections

− (14-qty) Beams shall have miter cut ends per engineer drawings.

− (14-qty) Miter cut beams shall have (85"x 65"x 1/4") plates w/4-holes each drilled through and welded to mitered ends, matching bolt hole patterns at W12" beam intersections.

− (12-qty) Miter beams shall have (2-qty) 4"x4"x1/4" plates, w/1-hole drilled through and welded to webs at each end for "x-bracing" connections.

− (2-qty) Miter beams (middle stringers of overlooks) shall have (4-qty) 4"x4"x1/4" plates with 1-hole drilled through for x-bracing connections on each side at both ends.

− (12-qty) Beams have (4-qty) angle brackets and (14-qty) beams have (2-qty) angle brackets

− (4"x4"x5/16") w/4-holes in each & a ( 4"x4"x5/16") plate welded to top of brackets for x-bracing connections.

B. BRACING

a. 13 – W12”x14# I-beams

− Each cut to lengths ranging from 96"-162" per engineer drawings.

− (9-qty) Beams shall have (8-qty) 13/16" holes drilled through webs @ stringer connections.

− ( 4-qty) Beams shall have (12-qty) 13/16" holes through webs @ overtook stringer connections

b. 10 – W6”x9# I-beams

− Each cut to length per drawings ( 4-qty = 60") & (24-qty = 84") − Each beam shall have (4-qty) 4"x4"x1/4" angle brackets welded centrally on web & protruding 1/2" beyond end of beam, w/2-holes drilled through to match bolt pattern at W10" connections.

− Each beam shall have (2-qty) 5/16"x 3x8" plates welded to top of top-flange, w/2-holes drilled through each for x-bracing connections.

C. DIAGONAL ANGLE IRON

a. 84- 2”x2”x ¼” Angle iron cross bracing

− Each cut to lengths per engineer drawings

− Each cross brace shall have (2qty) holes drilled through at ends

− Each angle shall be coped on undrilled leg of angle at each end for W10" clearance.

D. CONNECTION PLATES AND ANGLES

a. 56- S/16" Plates

− Cut each to 3"x8" with (2-qty) 11/16" holes drilled through. (Weld to W6" beams)

b. 112- 4"x4"x1/4" Angles

− Each cut to 5" long with (2-qty) 13/16" holes drilled through one leg. (Weld to W6" beams)

c. 76- 4”x4”x 5/16” Angles

− Each cut to 6.5" long with (4-qty) 13/16" holes drilled through, (2-qty) per leg.

(W10>W12)

d. 56- 4"x4"x 5/16” Plates

− Each cut to size with (1-qty) 11/16” hole drilled through.

− (40-qty) weld to 4"x4" angles & (16-qty) weld to W10" beams at mitered ends.

e. 14-1/4"x6.5"x8.25" Plates

− Each cut to size with (4-qty) holes drilled through. (Weld to miter ends of W10" beams)

f. 60- 1/4" Anchor Plates

− Each cut to 4"x8" & bent @ center with (2-qty) *slotted* 13/16" holes on one leg.

(Used to anchor W12” beams to helical pile caps, in any position)

E. NAILER ANGLE IRON

a. 284- 2.5”x2”x ¼” − Angles each cut to 12” long with (3-qty) ¼” holes drilled through 2.5” leg.

F. Hardware (All hardware shall be hot dipped galvanized, structural grade, and meet all requirements)

a. 850- ¾”x2” A325 Bolts

b. 350- 5/8"x1.5" A325 Bolts

c. 970- 3/4" A563 Nuts *Nylok*

d. 380- 5/8" A563 Nuts *Nylok*

e. 120- 3/4"x3" A325 Bolts (120)

f. 350- 5/8" F436 Washers (350)

Specifications:

A. QUALITY ASSURANCE

1. All materials shall be new.

2. Fabricator Qualifications: A qualified fabricator that participates in the AISC Quality Certification Program and is designated an AISC-Certified Plant, Category STD.

3. Welding Qualifications: Qualify procedures and personnel according to AWS D1.1/D1.1M, "Structural Welding Code - Steel."

4. Comply with applicable provisions of the following specifications and documents:

a) AISC 303.

b) AISC 360.

c) RCSC's "Specification for Structural Joints Using ASTM A 325 or A 490 Bolts."

B. STRUCTURAL-STEEL MATERIALS

1. Wide Flange: ASTM A992, Grade 50.

2. Channels, Angles-Shapes: ASTM A 36/A 36M or ASTM A 572/A 572M, Grade 50.

3. Plate and Brackets: ASTM A 36/A 36M or ASTM A 572/A 572M, Grade 50.

4. Welding Electrodes: Comply with AWS requirements.

C. BOLTS, CONNECTORS, AND ANCHORS

1. Zinc-Coated High-Strength Bolts, Nuts, and Washers:

a) ASTM A 325 (ASTM A 325M), Type 1, heavy-hex steel structural bolts

b) ASTM A 563, Grade DH (ASTM A 563M, Class 10S) heavy-hex carbon-steel nuts

c) ASTM F 436 (ASTM F 436M), Type 1, hardened carbon-steel washers.

d) Finish:

• Bolts and Nuts: Hot-dip zinc coating, ASTM A15A/ 153M, Class C.

• Washers: Hot-dip zinc coating, ASTM A15A/ 153M, Class B.

e) Nut Identification: Nuts shall have a visible dye lubricant. Dye lubricant shall match on all nuts.

D. PAINT/PRIMER (All I-beams and Angle Bracing)

1. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to the following:

a) Behr Process Corporation.

b) Benjamin Moore & Co.

2. MPI Standards: Provide materials that comply with MPI standards indicated and listed in its "MPI Approved Products List."

a) Primer, Alkyd, Anticorrosive: MPI #79.

b) Alkyd, Exterior Flat (Gloss Level 1): MPI #8.

3. Material Compatibility: Provide materials that are compatible with one another and with substrates.

a) For each coat in a paint system, provide products recommended in writing by manufacturers of topcoat for use in paint system and on substrate indicated.

4. Colors: As selected from Manufacturers full palette.

5. PREPARATION

a) Comply with recommendations in MPI's "MPI Architectural Painting Specification Manual" applicable to substrates indicated.

b) Clean and prepare surfaces in an area before beginning painting in that area.

c) Schedule painting so cleaning operations will not damage newly painted surfaces.

6. APPLICATION

a) Comply with recommendations in MPI's "MPI Architectural Painting Specification Manual" applicable to substrates indicated.

b) Paint exposed steel surfaces unless otherwise indicated.

c) Do not paint prefinished items, items with an integral finish, operating parts, and labels unless otherwise indicated.

d) Apply paints according to manufacturer's written instructions.

• Use brushes only where the use of other applicators is not practical.

e) Apply paints to produce surface films without cloudiness, spotting, holidays, laps, brush marks, roller tracking, runs, sags, ropiness, or other surface imperfections. Cut in sharp lines and color breaks.

• If undercoats or other conditions show through topcoat, apply additional coats until cured film has a uniform paint finish, color, and appearance.

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• For renovation projects, consult MPI's "MPI Maintenance Repainting Manual" and revise paint systems specified in paint application schedules.

7. EXTERIOR PAINT APPLICATION SCHEDULE

a) Steel:

• Flat, Alkyd: Two coats over alkyd anticorrosive primer:

MPI EXT 5.1D.

Delivery Locations: All materials will be delivered to the Rocky Mountain National Park Trails Shop at 863 Sundance Circle Drive, Estes Park, CO 80517.

Option Quantities: In addition to the quantity listed to be purchased above under the section “Materials” the following may be exercised as separate options to be exercised within 60 days from the date of award.

Additional 4 – W10x15 beams (25 feet in length)

Additional 4 – W12x14 beams (8 feet in length)

Additional 4 - W6x9 I-beams (7 feet in length)

Additional 10 - L2x2x ¼ (8 feet in length)

Additional 20 - 2.5x2x ¼ x 1’ steel angle bracket

Additional 100 - 5/8” (1-1/2” in length) bolts/nut/washer

Additional 100 – 3/4” (2” in length) bolts/nut/washer

Delivery: Delivery should be made during regular operations periods and coordinated through the vendor and either the ESD Trails Supervisor (970) 586-1304 or Trails Program Supervisor (970) 596-1279.

Operations:

RMNP: 6:30am-3:00pm M-TH

No deliveries outside of regular operations or during federal holidays.

e) Nut Identification: Nuts shall have a visible dye lubricant. Dye lubricant shall match on all nuts.

4. Colors: As selected from Manufacturers full palette.