Attachment B-2 Technical Specifications Divisions 02-28.pdf

SPECIFICATIONS

For

North Gateway Visitor Center

Silver Falls State Park

Oregon Parks and Recreation Department

21125 Hult Rd. SE, Silverton, OR 97381

For sections:

02200, 02225, 03310, 03450, 04850, 05500, 06100, 06173, 06180, 06200, 06400, 07110, 07170, 07210, 07270, 07310, 07460, 07600, 07910, 08110, 08143, 08210, 08310, 08332, 08510, 08560, 08710, 08800, 08900, 09250, 09310, 09650, 09672, 09680, 09900, 10165, 10260, 10310, 10440, 10522, 10800, 11132, 12485, 12490, 14240

For sections:

211300, 212200, 213200, 220500, 220700, 221000, 223000, 224000, 230500, 230548, 230590, 230700, 231000, 232300, 233000, 233400, 234000, 237450, 238000

For sections:

260500, 260519, 260526, 260529, 260533, 260553, 260573, 260923, 262000, 262413, 262416, 232726, 232800, 263214, 263623, 265000, 270100, 270170, 270180, 270190, 270526, 270530, 270543, 271113, 271116, 271500, 280010, 283100

12-31-2027

For sections:

02225, 03310, 03450, 04850, 05500, 06100, 06173, 06180, 06200, 06400, 07110, 07170, 07210, 07270, 07310, 07460, 07600, 07910, 08110, 08143, 08210, 08310, 08332, 08510, 08560, 08710, 08800, 08900, 09250, 09310, 09650, 09672, 09680, 09900, 10165, 10260, 10310, 10440, 10522, 10800, 11132, 12485, 12490, 14240

Silver Falls State Park North Gateway Visitor Center

PHASE 3 SPECIFICATIONS

6/1/2026

OWNER:

State of Oregon

Oregon Parks and Recreation Department 725 Summer St. NE, Suite C

Salem, OR 97301-1266

ARCHITECT:

Anderson Shirley Architects, Inc.

695 Commercial St. SE Ste. 118

Salem, OR 97301

(503) 371-1140

STRUCTURAL ENGINEER (VISITOR CENTER):

Lewis Van Vleet Structural Engineers 14945 SW Sequoia Pkwy, Suite 180

Portland, OR 97224

(503) 885-8605

STRUCTURAL ENGINEER (FIRE PUMP BLDG):

MSC Engineers 3470 Pipebend Place NE, #120

Salem, OR 97301

(503) 399-1399

PLUMBING/MECH./ELEC./FIRE PROTECTION ENGINEER:

MFIA Consulting Engineers 2007 SE Ash St.

Portland, OR 97214

TABLE OF CONTENTS

TITLE

Title Page Stamp Page Table of Contents

SPECIFICATIONS

DIVISION 2 SITE WORK

Section 02225 Selective Demolition

DIVISION 3 CONCRETE

Section 03310 Cast-In-Place Concrete Section 03450 Architectural Precast Concrete

DIVISION 4 MASONRY

Section 04850 Stonework

DIVISION 5 METALS

Section 05500 Metal Fabrication

DIVISION 6 WOOD AND PLASTIC

Section 06100 Rough Carpentry Section 06173 Prefabricated Structural Wood Section 06180 Glue Laminated Structural Units Section 06200 Finish Carpentry Section 06400 Architectural Woodwork

DIVISION 7 THERMAL AND MOISTURE PROTECTION

Section 07110 Bituminous Damp-proofing Section 07170 Bentonite Waterproofing Section 07210 Insulation Section 07270 Air and Weather Barriers Section 07310 Synthetic Shakes Section 07460 Siding Section 07600 Flashing and Sheet Metal Section 07910 Joint Sealer

DIVISION 8 DOORS AND WINDOWS

Section 08110 Steel Doors and Frames Section 08143 Stile-and-Rail Wood Doors Section 08210 Wood Doors Section 08310 Access Panels Section 08332 Overhead Coiling Counter Doors Section 08510 Steel Windows Section 08560 Vinyl Windows Section 08710 Builders Hardware Section 08800 Glass and Glazing Section 08900 Metal Louvers

DIVISION 9 FINISHES

Section 09250 Gypsum Board Section 09310 Ceramic Tile

Section 09650 Resilient Flooring Section 09672 Epoxy Flooring Section 09680 Carpeting Section 09900 Painting

DIVISION 10 SPECIALTIES

Section 10165 Plastic Toilet Compartment Section 10260 Wall and Corner Guards Section 10310 Manufactured Fireplaces Section 10522 Fire Extinguishers, Cabinets and Accessories Section 10800 Toilet Room Accessories

DIVISION 11 EQUIPMENT

Section 11132 Audio Visual Equipment

DIVISION 12 FURNISHINGS

Section 12485 Entry Mats Section 12490 Window Treatment

DIVISION 14 CONVEYING SYSTEMS

Section 14240 Machine Room-less Hydraulic Elevator

DIVISION 21 FIRE SUPPRESSION

Section 211300 Fire Protection Section 212200 Clean Agent Fire Suppression System Section 213200 Engine Drive Pumps

DIVISION 22 PLUMBING

Section 220500 Plumbing Materials and Methods Section 220700 Plumbing Insulation Section 221000 Plumbing Piping and Pumps Section 223000 Plumbing Equipment Section 224000 Plumbing Fixtures

DIVISION 23 HEATING, VENTILATING, AND AIR CONDITIONING (HVAC)

Section 230500 HVAC Materials and Methods Section 230548 Vibration and Seismic Controls Section 230590 Testing, Adjusting, and Balancing Section 230700 HVAC Insulation Section 231000 Facility Fuel Systems Section 232300 Refrigerant Piping System Section 233000 Air Distribution Section 233400 HVAC Fans Section 234000 HVAC Filters Section 237450 Unitary HVAC Units Section 238000 Terminal HVAC Equipment

DIVISION 26 ELECTRICAL

Section 260500 Common Work Results for Electrical Section 260519 Electrical Power Conductors and Cables Section 260526 Grounding and bonding for Electrical Systems Section 260529 Hangers and Supports for Electrical Systems

Section 260533 Raceway and Boxes for Electrical Systems Section 260553 Identification for Electrical Systems Section 260573 Electrical Power System Studies Section 260923 Lighting Control Devices Section 262000 Service Entrance Section 262413 Switchboards Section 262416 Panelboards Section 262726 Wiring Devices Section 262800 Circuit Protective Devices Section 263214 Gas Engine Driven Generator Sets Section 263623 Automatic Transfer Switches Section 265000 Lighting

DIVISION 27 COMMUNICATIONS

Section 270100 General Communications Systems Requirements Section 270170 Testing, Identifications, and Administration Section 270180 Technology Documentation Section 270190 Support and Warranty Section 270526 Grounding and Bonding Technology Equipment Section 270530 Interior Communications Pathways Section 270543 Exterior Communications Pathways Section 271113 Entrance Facilities Section 271116 Equipment and Telecommunication Room Section 271500 Horizontal Copper Cabling

DIVISION 28 ELECTRONIC SAFETY AND SECURITY

Section 280010 Electronic Safety and Security Basic Requirements Section 283100 Addressable Fire Alarm

02225 SELECTIVE DEMOLITION

SECTION 02225

SELECTIVE DEMOLITION

PART 1 GENERAL

1.1 SUMMARY

A. Contract Conditions: Work of this Section is bound by the Contract Conditions and Division 1, bound herewith, in addition to this Specification and accompanying Drawings.

B. Provide selective demolition as required.

1. Demolish interior partitions, systems, and building components designated to be removed.

2. Demolish exterior portions of facade, structures, and components designated to be removed.

3. Protect portions of building adjacent to or affected by selective demolition.

4. Remove and legally dispose of demolished materials off-site.

5. Notify Owner prior to shut-off of existing utilities. Cap off utilities to be discontinued in use.

6. Except for items listed in Paragraph C below, do all minor demolition required for proper completion of the work.

C. Work By Owner

1. Furniture and movable equipment interfering with work of this Contract will be removed by Owner before Contractor is prepared to start work in the area involved.

2. All items remaining in the construction area after the date of notice to proceed shall be deemed as debris and disposed of by the contractor, unless otherwise noted.

1.2 QUALITY ASSURANCE

A. Compliance

1. In addition to complying with all pertinent codes and regulations, comply with the requirements of all insurance carriers providing coverage for this work.

1.3 PROJECT CONDITIONS

A. Protection of Person & Property

1. Extend requirements of General Conditions to include:

a. Protection of neighboring property, occupants of said property, customers, visitors, and passersby from injury and discomfort caused by dust.

b. Provide dust tight chutes and sprinkle dust as necessary to accomplish this result.

2. Protect from damage those portions which are to remain.

a. Allow no leaks, even temporary, in existing structures.

b. Provide dustproof and/or soundproof partitions where indicated, and as detailed: provide other dust protection as required to protect occupied areas.

3. Repair all damage to Owner's property resulting from the minor demolition work.

4. Cooperate in maintaining continuous operation of Owner's facility.

B. Objectionable Noise

1. Schedule work requiring air hammers or other noisy equipment in cooperation with Owner to minimize disruption.

PART 2 PRODUCTS

2.1 SALVAGE

A. To Contractor

1. All salvage becomes Contractor's property.

2. Contractor shall remove all salvaged items from the site at Contractor's expense. Storage or sale of items at project site is prohibited.

3. Specific items have been identified for reuse in the completed facility.

Contractor is to remove store and install items as part of this contract.

B. To Owner

1. Owner will identify those salvage items in the project area to be delivered to Owner. Generally these will include electrical fixtures, door hardware, mechanical equipment and major equipment items.

PART 3 EXECUTION

3.1 PREPARATION

A. Site Inspection

1. Prior to work of this section, carefully inspect the entire site and determine what areas or items will require removal and which items will remain to accomplish the work.

2. Locate all existing active utility lines and determine the requirements for their protection.

3.2 MINOR DEMOLITION WORK

A. Extent of Work in this Section

1. Do all minor demolition and removal for completion of the remodeling work shown on the drawings, specified herein or required for completion of the work.

2. Cease operations if public safety or remaining structures are endangered.

Perform temporary corrective measures until operations can be continued properly.

B. Utilities

1. Do not close or obstruct streets, walks, drives or other occupied or used spaces or facilities without the written permission of the Owner and the authorities having jurisdiction. Do not interrupt utilities serving occupied or used facilities without the written permission of the Owner and authorities having jurisdiction. If necessary, provide temporary utilities.

C. Concrete Sawing, when required

1. Provide equipment with diamond blades, appropriate for suiting job conditions.

2. Saw cut existing concrete slabs and curbs where indicated or required for construction or work below slab. This is to include exterior walks and curbs.

3. When cutting openings through walls core drill corner of horizontal and vertical intersection of cut line, do not over run line at corner.

D. Debris

1. Allow no debris to accumulate in structure, or on grounds, streets, alleys and walks.

2. Haul away and dispose of at legal disposal areas away from site, at Contractor's expense.

END OF SECTION 02225

THIS PAGE INTENTIONALLY LEFT BLANK

03310 CAST-IN-PLACE CONCRETE

SECTION 03310

CAST-IN-PLACE CONCRETE

B. References:

1. Meet requirements of current editions of ACI 301 "Specifications for Structural Concrete for Buildings," and ACI 318 “Building Code Requirements for Structural Concrete.”

2. Contractor shall have a copy of these standards on the project site at all times.

1.2 SUBMITTALS

A. Products List:

1. Within 30 days after date of Contract, and before any concrete is delivered to the job site, submit to the Architect in accordance with Section 01300 “Submittals Procedure” a complete list of all products which are proposed for installation under this portion of the Work, and the name and address of transit mix concrete supplier.

B. Certificates

1. Manufacturer's certificate that materials meet Specification requirements.

2. Materials content per cubic yard of each class of concrete furnished:

a. Dry weight of cement.

b. Saturated surface dried weights of fine and course aggregate.

c. Quantities, type, and name of admixtures.

d. Weight of water.

3. Ready-mix delivery tickets, ASTM C94-86b.

1.3 QUALITY ASSURANCE

A. Testing Agency:

1. Testing shall be in accordance with Division 01, and the standards referenced below.

2. Tests of cement and aggregates will be performed to ensure conformance with requirements stated herein.

3. Three concrete test cylinders will be taken for every 75 or less cu. yds. of concrete placed each day. One additional test cylinder will be taken during cold weather and cured on site under same conditions as concrete it represents.

4. One slump test will be taken for each pour.

B. Conflicts:

1. Where requirements of regulatory agencies or reference standards conflict with the requirements of this Section of these Specifications, the higher more stringent requirements shall apply.

C. Concrete proportions: Concrete shall be stone concrete composed of cement, fine aggregate, course aggregate, fly ash, and water.

D. Design: The Contractor shall prepare the designs of mixes for each class of concrete specified to be used. The concrete shall be designed in accordance with ACI Standard Recommended Practice for Design of Concrete Mixes ACI Latest Edition to produce the strength for each type of concrete with the slumps and maximum sizes of course aggregate specified. The mix design shall meet or exceed the requirements listed in Part 2 of these specifications.

E. Tolerances for Slabs:

1. Exterior Slabs on grade: Class B Tolerance, true to planes within 1/4" in 10 feet.

2. Interior Slabs on grade: Class A Tolerance, true to planes within 1/8" in 10 feet.

3. Determine tolerances by placing a straight edge anywhere on the slab in any direction.

F. Weather Requirements:

1. Cold Weather: Conform to 5.6 of ACI 306R. Procedures for placing and protecting concrete work during freezing weather by Architect/Engineer approval only. Assume all risk for concrete work during freezing weather.

Remove and replace frozen concrete at Contractor's expense. Keep above freezing point until thoroughly set. Use no admixtures to prevent freezing without prior written approval of Architect/Engineer.

2. Hot Weather: Conform to Section 5.7 of ACI 305R. Temporarily discontinue placement when, in the opinion of the Architect/Engineer climatic conditions of sun, heat, wind, or humidity prevent proper placement, consolidation or finishing. Use of approved retardant admixture shall be provided at no additional charge to the Owner if, in the opinion of the Architect/Engineer climatic conditions so indicate.

2.1 MATERIALS

A. Formwork:

1. Form Materials: Contractor's choice of standard products with sufficient strength to withstand hydrostatic head without distortion in excess of permitted tolerances.

a. Form Facing for Exposed Finish Concrete: Contractor's choice of materials that will provide smooth, stain-free final appearance.

Where surfaces are exposed, panels shall be manufacturer's stock size material, using smaller panels cut to required dimensions only where required by openings and joints. Chamfer, bevel or round exposed external corners by placing moldings in the forms.

b. Form Coating: Release agent that will not adversely affect concrete or interfere with application of coatings or finishes.

c. Form Ties: Cone snap type that will leave no metal within 1-1/2 inches of concrete surface.

B. Reinforcement:

1. Reinforcing Steel: ASTM A 615/A 615M Grade 60 (420).

a. Deformed billet-steel bars.

b. Unfinished.

2. Steel Welded Wire Reinforcement: ASTM A 185, plain type.

a. Flat Sheets.

b. Mesh Size and Wire gauge as indicated on Plans.

3. Joint Dowel Plates: ASTM A 36,ASTM A 615 or A108-03 grade 1018, plain type with high density ABS plastic pocket former.

a. Steel load plate, size 3/8” thick by 4-1/2 inches x 4-1/2 inches.

4. Reinforcement Accessories:

a. Wire Ties: Black annealed steel, 16 gauge minimum.

b. Chairs, Bolsters, Bar Supports, Spacers: Sized and shaped for adequate support of reinforcement during concrete placement.

c. Provide plastic components for placement within 1-1/2 inches of weathering surfaces.

C. Concrete Materials:

1. Cement: Portland cement, ASTM C 150, Type 1. Use one brand only for all exposed concrete.

2. Admixtures, all with less than 1% chloride ions:

a. Water reducing: ASTM C494-90, type and super plasticizer as required for workability; Euclid, Sika, L & M or approved.

b. Air-entraining: ASTM C260-86, type for use in exterior concrete and foundations exposed to freeze-thaw; Euclid, Sika, L & M or approved.

3. Aggregate:

a. Concrete: ASTM C 33:

1) Fine Aggregates: 3/8" maximum size.

2) Coarse Aggregate: 1-1/4" maximum size, except 3/4" maximum where indicated or required.

D. Miscellaneous Materials:

1. Vapor retarders under slab on grade:

a. Stego Wrap Vapor Barrier by Stego Industries, LLC; W.R. Meadows premolded membrane with Plasmatic Core; Vaporguard by Reef Industries Vapor Barrier, or approved

b. Min. thickness: 10 mil

c. Water vapor transmission rate: ASTM E-96, 0.006 gr./ft2/hr. or lower

d. Permeance Rating: ASTM E-96, 0.01gr./ft2/hr. or lower

e. Puncture Resistance: ASTM E-1745, minimum 1970 grams

f. Tensile Strength: ASTM E-1745m nubunyn 45.0 lbf/in

g. Provide manufacturer’s seam tape and pipe boots for complete system.

2. Chemical Cure/Sealer/Hardening Compound: Non-staining, low-gloss finish, V-SEAL® 102 Winter Guard, or approved equal meeting all criteria of ASTM

C156, ASTM C309, and AASHTO M 148 - Liquid Membrane-Forming Curing Compound. Apply two coats per manufacturer’s instructions.

3. Grout: Non-metallic, non-shrink type, pre-mixed.

a. Minimum Compressive Strength at 48 Hours: 2,400 psi.

b. Minimum Compressive Strength at 28 Days: 7,000 psi.

4. Bonding Agent: burke "Bond Crete-S", "Febond PVA", Horn "Daraweld-C", jef "Con-Bond", Larsen Products "Weld-Crete", Sika "SikaLatex", Thro Products "Thorobond", or approved.

5. Non-slip finish: Aluminum oxide grit. Davis "Regular Non-Slip", Horn "Durafax", Sonneborn "Frictex", or approved.

E. Expansion Joint Material:

1. Joint Filler: ASTM D 3575, closed-cell polyethylene foam backing, with removable joint cap, 1/4 inch thick and depth to equal concrete thickness.

2. Joint Primer: ASTM C 920, Solvent based primer for preparing concrete surfaces for adhesion to sealant. Provide product recommended for use by joint sealant manufacturer.

3. Backer Rod: Non-gassing, reticulated closed-cell polyethylene rod designed for use with cold-applied joint sealants where joint depth exceeds manufacturer’s recommended depth for joint sealant. Comply with ASTM C 1330, Type C. Size as required for joint design.

4. Construction Joint Devices: Integral galvanized steel; 1/8 inch thick, formed to tongue and groove profile, with removable top strip exposing sealant trough, knockout holes spaced at 6 inches, ribbed steel spikes with tongue to fit top screed edge.

5. Joint Sealant: ASTM C 920, Type M, Grade NS or SL, Class 25, multi-component, traffic grade, self-leveling polyurethane sealant. Color to be selected by Project Manager.

F. Abrasive Metal Nosings: Provide ADA compliant nosings at all stairs which are part of an exitway. Provide units suitable for cast-in-place stairs and concrete filled steel stairs, as applicable.

1. Products:

a. American Safety Tread Co, Inc; Product Type BF211D:

www.americansafetytread.com.

b. Balco Inc; Product P-200 Stair Nosing: www.balco.com

c. Wooster Products Inc; Product Type 121BF: www.wooster-products.com

d. Substitutions: See Section 01 6000 - Product Requirements.

2. Provide ribbed units, with abrasive filler strips projecting 1/16 inch above aluminum extrusion.

a. Filler Strip Color: Contrasting color as selected from manufacturer’s full range of available colors.

2.2 PROPORTIONING AND MIXES

A. Concrete Strength:

1. Compressive strength at 28 days equal 3,000 psi, for all uses unless otherwise noted.

2. Plant Mix: All concrete is to be plant mixed by a firm regularly engaged in plant mixing and delivery. Equipment and methods in conformance with ACI http://www.americansafetytread.com/ http://www.balco.com/ http://www.wooster-products.com/

Standard recommended practice for design of concrete mixes ACI 301 Chapter 5.

B. Maximum Aggregate Size:

1. Slabs and walls: ¾”

2. Footings: 1 ½”

3. Exposed aggregate concrete: ⅜”

C. Slump:

1. Footings, walls, curbs, columns, 4", maximum.

2. Beams, ramps, floor paving and interior floor slabs, 3".

D. Admixtures:

1. Air Entrainment:

a. For all exterior exposed slabs, 5% +/- 1%.

b. For all other concrete, not required.

2. Water Reducing: All concrete may contain the water reducing admixture specified above.

3. Calcium Chloride: Shall not be used.

E. Proportioning of Ingredients:

1. ACI 301-95, Section 3.9.1 or 3.9.2, as applicable.

2. Water cement ratio not to exceed 0.40 by weight, including free water in aggregate.

3. Concrete shall have a minimum cement factor of 5-1/2 sacks per cu yd, except that concrete for walls and slabs of below grade spaces shall have a minimum cement factor of 6-1/2 sacks per cu yd.

4. Limit fly ash in mix to less than 20%

F. Mixing

1. Ready-Mixed Concrete: Measure, batch, mix and deliver according to ASTM C94.

2. Furnish batch ticket information.

3. Transit Time, includes mixing and delivery:

a. 1-1/2 hrs for air Temperatures below 85 degrees F.

b. 75 minutes for air Temperatures between 85 and 95 degrees F.

c. 60 minutes for air Temperatures above 90 degrees F.

A. EXAMINATION

1. Verify lines, levels, and dimensions before proceeding with Work of this section. Verify proposed gradients and elevations can be achieved and meet existing grade conditions on site. Any nonconforming conditions shall be brought to the attention of the Owner’s Representative and corrected before proceeding with concrete placement operations.

B. PREPARATION

1. Proof-roll prepared subbase surface to check for unstable areas and verify need for additional compaction. Proceed with pavement only after nonconforming conditions have been corrected and subgrade is ready to receive pavement. Remove loose material from compacted subbase surface immediately before placing concrete.

2. Formwork: Comply with requirements of ACI 301. Design and fabricate forms to support all applied loads until concrete is cured, and for easy removal without damage to concrete. Formwork shall be mortar tight, properly aligned and supported to produce concrete conforming accurately to the indicated shapes, lines, dimensions, with surfaces free of offsets, waviness, or bulges.

3. Verify that forms are clean and free of rust before applying release agent.

4. Coordinate placement of joint devices with erection of concrete formwork and placement of form accessories.

5. Prepare previously placed concrete by cleaning with steel brush and applying bonding agent in accordance with manufacturer's instructions.

6. Under Slab Vapor Barrier:

a. Installation shall be in accordance with manufacturer’s instructions and ASTM E 1643. Unless otherwise indicated, cover subgrades for slabs in buildings with a vapor barrier.

b. Unroll Vapor Barrier with the longest dimension parallel with the direction of the pour.

c. Lap Vapor Barrier joints and seal to foundation walls.

d. Overlap joints 6 inches and seal with manufacturer’s recommended tape.

e. Seal all penetrations (including pipes) with manufacturer’s recommended pipe boot.

f. No penetration of the vapor barrier is allowed except for reinforcing steel and permanent utilities.

g. Repair damaged areas by cutting patches of vapor barrier, overlapping damaged area 6 inches and taping all four sides with tape.

7. Install ground cover Vapor Retarder on grade at crawl spaces after formwork is removed. Lap joints minimum 6 inches and seal watertight by taping edges and ends.

C. INSTALLING REINFORCEMENT

1. Reinforcement shall be fabricated to shapes and dimensions shown and shall conform to the requirements of ACI 318. Reinforcement shall be cold bent, unless otherwise authorized. Bending may be accomplished in the field or at the mill. Bars shall not be bent after being embedded in concrete.

2. Comply with requirements of ACI 301. Clean reinforcement of loose rust and mill scale, dirt, oil, or other deleterious coating that could reduce bond with the concrete. Accurately position, support, and secure in place to achieve not less than minimum concrete coverage required for protection.

3. Install welded wire reinforcement in maximum possible lengths, and offset end laps in both directions. Splice laps with tie wire.

4. Install fabricated bar mats in lengths as long as practicable. Handle units to keep them flat and free of distortions. Straighten bends, kinks, and other irregularities, or replace units as required before placement. Set mats for a minimum 2-inch overlap of adjacent mats.

5. Placement: Reinforcement shall be placed at locations shown, plus or minus one bar diameter. Reinforcement shall not be continuous through expansion joints, and shall be as indicated through construction or contraction joints.

Concrete coverage shall be as indicated or as required by ACI 318. If bars are moved more than one bar diameter to avoid interference with other reinforcement, conduits or embedded items, the resulting arrangement of bars, including additional bars required to meet structural requirements, shall be approved before concrete is placed.

6. Splicing: Splices of reinforcement shall be made only as required or indicated. Splicing shall be by lapping or by mechanical or welded butt connection. Welding shall conform to AWS D1.4. Welded butt splices shall be full penetration butt welds. Lapped bars shall be placed in contact and securely tied or spaced transversely apart to permit the embedding of the entire surface of each bar in concrete. Lapped bars shall not be spaced farther apart than one-fifth the required length of lap, or 6-inches. Mechanical butt splices shall be in accordance with the recommendation of the manufacturer of the mechanical splicing device. Butt splices shall develop

125 percent of the specified minimum yield tensile strength of the spliced bars or of the smaller bar in transition splices. Bars shall be flame dried before butt splicing. Adequate jigs and clamps or other devices shall be provided to support, align, and hold the longitudinal centerline of the bars to be butt spliced in a straight line.

D. JOINTS

1. Install joint devices in accordance with manufacturer's instructions. Form all joints and tool edgings true to line with faces perpendicular to surface plane of concrete. Construct transverse joints at right angles to centerline, unless otherwise indicated.

2. Construction Joints: Set construction joints at side and end terminations of pavement and where pavement operations are stopped for more than 1/2-hour. Termination points shall occur at a scoring location indicated on the plans

a. Install construction joint devices in coordination with floor slab pattern placement sequence. Set top to required elevations. Secure to resist movement by wet concrete.

b. Install dowel plates at construction joints in concrete paving. Install pocket former and dowel plate per manufacturer’s printed instructions utilizing templates for locating pocket former at the correct position for specified concrete thickness.

3. Isolation Joints: Form isolation joints abutting building slabs, walls, catch basins, manholes, inlets, light pole bases, structures, other fixed objects and where indicated on the Drawings.

a. Joint Filler and Sealant Installation: Install joint filler strips and sealant as follows at isolation joints.

i. Furnish joint fillers in one-piece lengths. Where more than one length is required, lace or clip joint-filler sections together. Terminate joint filler flush with top of paving for joint fillers having removable joint cap. Terminate joint filler 1/2 joint width below top of paving for joint fillers without removable joint cap.

ii. Protect top edge of joint filler during concrete placement with metal, plastic, or other temporary preformed cap. Remove protective cap after concrete has been placed on both sides of joint.

iii. Allow concrete to cure minimum of 28 days.

iv. Remove joint filler cap; clean and prime concrete surfaces to receive sealant per manufacturer’s recommendations.

v. If joint filler depth from top of paving exceeds 3/8 inch, install backer rod prior to installing joint sealant. Backer rod to be 25 percent wider than joint width. Sealant depth to be 1/2 width of joint, not to exceed 3/8 inch, whichever is smaller. Install backer rod and sealant per manufacturer’s recommendations.Fill void with sealant to match concrete color unless indicated otherwise, and top with silica sand while still wet.

b. Protect sealant from pedestrian and vehicular traffic until cured.

c. Clean excess sealant from paved surfaces.

4. Contraction Joints: Form weakened-plane contraction joints, sectioning concrete into areas as indicated on the Drawings. Construct contraction joints for a depth of no less than 1/4 the overall concrete thickness. Locate at intervals of 12 feet maximum, unless otherwise indicated on the Drawings.

Install contraction joints as follows.

a. Tooled Joints: Form contraction joints and score (decorative) joints after initial floating by grooving and finishing each edge of joint with grooving tool to a 1/4 inch radius. Repeat grooving of joints after applying surface finishes. Eliminate grooved marks on concrete surfaces leaving no “shiner” bands.

5. Saw-Cut Joints: Saw cut slab on grade control joints within 24 hours after placing. Use 3/16 inch thick blade, cut into 1/4 depth of slab thickness.

6. Edging: Tool exposed edges of ramps, sidewalks, walkways and joints in concrete after initial floating with an edging tool to a 1/2 inch radius. Tool edges of concrete paving to a 1/4 inch radius where adjacent to other paving.

Repeat tooling of edges after applying surface finishes. Eliminate tool marks on concrete surfaces leaving no “shiner” bands.

E. PLACING CONCRETE

1. Place concrete in accordance with ACI 304R.

2. Place concrete for floor slabs in accordance with ACI 302.1R.

3. Notify Owner not less than 24 hours prior to commencement of placement operations.

4. Place concrete on clean undisturbed surfaces free from frost, ice, and water.

Concrete may be placed directly on impervious surfaces that are thoroughly moistened but not muddy. During cold weather, protect in-place concrete from freezing throughout the curing period. Concrete to receive other construction shall be screeded to the proper level. No concrete shall be placed or finished in the rain. It shall be the Contractor’s responsibility to schedule his operations such that concrete will not be placed or finished in the rain.

5. Ensure reinforcement, inserts, waterstops, embedded parts, and formed construction joint devices will not be disturbed during concrete placement.

6. Repair vapor barrier damaged during placement of concrete reinforcing.

Repair with vapor barrier material; lap over damaged areas minimum 6 inches and seal watertight.

7. Maintain records of concrete placement. Record date, location, quantity, air temperature, and test samples taken.

8. Place concrete continuously between predetermined expansion, isolation, control, contraction, and construction joints. Except for slabs 4 inches or less, consolidate each layer of concrete with internal concrete vibrators supplemented by hand spading, rodding, and tamping. Vibrating equipment shall be adequate to thoroughly consolidate the concrete. Concrete in slabs 4 inches and less shall be consolidated by compacting and screeding.

9. Do not interrupt successive placement; do not permit cold joints to occur.

10. Screed floors level, maintaining surface flatness of maximum 1/4 inch in 10 ft.

F. CONCRETE FINISHING

1. Repair surface defects, rock pockets, including tie holes, immediately after removing formwork.

2. Unexposed Form Finish: Rub down or chip off fins or other raised areas 1/4 inch or more in height.

3. Exposed Form Finish: Rub down or chip off and smooth fins or other raised areas 1/8 inch or more in height. Provide finish as follows:

a. Smooth Rubbed Finish: Wet concrete and rub with carborundum brick or other abrasive, not more than 24 hours after form removal.

b. Grout Cleaned Finish: Wet areas to be cleaned and apply grout mixture by brush or spray; scrub immediately to remove excess grout. After drying, rub vigorously with clean burlap, and keep moist for 36 hours.

4. Concrete Slabs: Finish to requirements of ACI 302.1R, and as follows:

a. Steel trowel surfaces that will receive carpeting, resilient flooring, seamless flooring, thin set quarry tile, and thin set ceramic tile. Finish to a true plane with no deviation exceeding 1/4 inch when tested with a 10-foot straightedge. Pitch to drain where indicated. Screed and float to the required finish level with no coarse aggregate visible before finishing as specified below.

b. Steel trowel surfaces that will be left exposed. Slabs shall have a monolithic finish unless otherwise specified. After the surface moisture has disappeared, steel-trowel floated-surfaces to a smooth, even, dense finish free from blemish, including trowel marks. Exterior slabs, after being troweled smooth, shall receive a light broom finish.

c. Do Not Add Water To Slab Surfaces During The Finishing Process.

5. Surface Retarded Exposed Aggregate Finish: After final floating, apply a hand-trowel finish followed by a surface retarded finish to concrete.

a. Apply Chemical Surface Retarder uniformly over the surface of freshly placed concrete as soon as concrete finishing is completed and the bleed water has disappeared from the surface per manufacturer’s printed instructions.

b. Test a section of the retarded surface prior to general aggregate exposure to determine if the underlying concrete has reached sufficient strength so that the aggregates will not be loosened or dislodged during removal procedures, and to match the Architect’s approved samples.

c. Remove the retarded surface by use of a long-handled, stiff-bristle brush and a pressure washer or a strong jet of water from a hose. Pressure washing will facilitate removal, especially in larger areas. Control runoff in accordance with local, state, and federal regulations.

6. Concrete Patio: Finish to requirements of ACI 302.1R, and as follows:

a. Wetting of concrete surfaces during screeding, initial floating, or finishing operations is prohibited

b. Float Finish: Begin the second floating operation when bleed-water sheen has disappeared and the concrete surface has stiffened sufficiently to permit operations. Float surface with power-driven floats, or by hand floating if area is small or inaccessible to power units. Finish surfaces to true planes. Cut down high spots, and fill low spots. Refloat surface immediately to uniform granular texture.

c. Concrete Finish: After final floating, apply a hand-trowel finish followed by a broom finish to concrete unless indicated otherwise on the Drawings.

i. Medium Textured Broom Finish: Draw a medium stiff bristle broom across float-finished concrete surface perpendicular to line of traffic to provide a uniform, medium-line texture perpendicular to line of traffic.

7. Maintain concrete with minimal moisture loss at relatively constant temperature for period necessary for hydration of cement and hardening of concrete.

a. Normal concrete: Not less than 7 Days.

8. Surfaces Not in Contact with Forms:

a. Begin final curing after initial curing but before surface is dry.

i. Chemical Cure/Sealer/Hardener Compound: Apply two coats at right angles according to manufacturer’s instructions and recommended application rate.

G. PAVEMENT TOLERANCES

1. Comply with tolerances of ACI 330.1 for exterior patio and interior slabs and as follows:

a. Elevation: 1/4 inch.

b. Thickness: Plus 3/8 inch, minus 1/4 inch.

c. Surface: Gap below 10-foot long, unleveled straightedge not to exceed 1/4 inch.

d. Lateral Alignment and Spacing of Tie Bars and Dowels: 1 inch.

e. Vertical Alignment of Tie Bars and Dowels: 1/4 inch.

f. Alignment of Tie-Bar End Relative to Line Perpendicular to Pavement Edge: 1/2 inch.

g. Alignment of Dowel-Bar End Relative to Line Perpendicular to Pavement Edge: Length of dowel 1/4 inch per 12 inches.

h. Joint Spacing: 3 inches.

i. Contraction Joint Depth: Plus 1/4 inch, no minus.

j. Joint Width: Plus 1/8 inch, no minus.

H. FIELD QUALITY CONTROL

1. An independent testing agency hired and paid for by the Contractor and approved by the Owner will perform field quality control tests, as specified in this Section.

2. Provide free access to concrete operations at Project site and cooperate with appointed firm.

3. Submit proposed mix design of each class of concrete to inspection and testing firm for review prior to commencement of concrete operations.

4. Tests of concrete and concrete materials may be performed at any time to ensure conformance with specified requirements.

5. Compressive Strength Tests: ASTM C 39/C 39M. For each test, mold and cure four concrete test cylinders. Obtain test samples for every 100 cubic yards or less of each class of concrete placed and at least 1 set of samples per batch of concrete each day concrete is placed.

6. Temperature testing: Perform one test hourly when air temperature is 40 degrees Fahrenheit and below and when 80 degrees Fahrenheit and above

7. Perform one slump test for each set of test cylinders taken, following procedures of ASTM C 143/C 143M.

8. Perform one air content text for each set of test cylinders taken, following procedure of ASTM C 231, pressure method.

9. Strength of each concrete mix will be satisfactory if average of any 3 consecutive compressive-strength tests equals or exceeds specified compressive strength and no compressive-strength test value falls below specified compressive strength by more than 500 psi.

I. DEFECTIVE CONCRETE

1. Test Results: The testing agency shall report test results in writing to Owner and Contractor within 24 hours of test. Reports of compressive-strength tests shall contain Project identification name and number, date of concrete placement, name of concrete testing and inspecting agency, location of concrete batch in Work, design compressive strength at 28 days, concrete mixture proportions and materials, compressive breaking strength, and type of break for both 7-day and 28-day tests

2. Defective Concrete: Concrete not conforming to required lines, details, dimensions, tolerances or specified requirements.

3. Repair or replacement of defective concrete will be determined by the Owner. The cost of additional testing, repair and replacement shall be borne by Contractor when defective concrete is identified.

4. Do not patch, fill, touch-up, repair, or replace exposed concrete except upon express direction of Owner for each individual area.

END OF SECTION 03310

03450 ARCHITECTURAL PRECAST

SECTION 03450

ARCHITECTURAL PRECAST CONCRETE

B. Provide precast concrete units, for exposed architectural applications:

1. Smooth-faced units.

C. Application:

1. Copings and sills.

D. Related Sections:

1. Cast in Place Concrete: Section 03310.

2. Metal Fabrication: Section 05500.

A. Products List:

1. Within 30 days after date of Contract, and before any concrete is delivered to the job site, submit to the Architect in accordance with Section 01340 of these Specifications a complete list of all products which are proposed for installation under this portion of the Work, and the name and address of transit mix concrete supplier.

B. Certificates

1. Manufacturer's certificate that materials meet Specification requirements.

2. Materials content per cubic yard of each class of concrete furnished:

a. Dry weight of cement.

b. Saturated surface dried weights of fine and course aggregate.

c. Quantities, type, and name of admixtures.

d. Weight of water.

C. Concrete Samples:

1. Sample size: 24 inches long.

2. Provide sufficient samples, as required, until approved by Architect.

3. Approved sample shall serve as a standard for quality and indicate the permissible range of color and texture.

1.3 QUALITY ASSURANCE

A. Concrete proportions: Concrete shall be stone concrete composed of cement, fine aggregate, course aggregate and water.

B. Design: The Contractor shall prepare the designs of mixes for each class of concrete specified to be used. The concrete shall be designed in accordance with ACI Standard Recommended Practice for Design of Concrete Mixes ACI

03450 ARCHITECTURAL PRECAST

Latest Edition to produce the strength for each type of concrete with the slumps and maximum sizes of course aggregate specified. The mix design shall meet or exceed the requirements listed in Part 2 of these specifications.

A. Concrete materials:

1. Portland cement: ASTM C150, type I or II, non-staining, no efflorescence.

2. Aggregate: ASTM C33.

3. Coarse aggregate for exposed aggregate finish: Match project sample.

4. Water: potable, non-staining.

5. Pigment: Non-fading, inorganic pigments for use in concrete.

B. Concrete Mix: 5000 psi, air entrained, pigmented portland cement concrete.

Design mix based on application, color and texture of approved sample.

C. Joints:

1. Mortar, ASTM C 270.

2. Sealant.

D. Reinforcing:

1. Bars: ASTM A615, grade 60, deformed.

2. Welded wire: ASTM A185.

E. Molds and form liners: Selection based on fabrication and finish requirements;

no sand molds.

E. Clip angles, bolts, anchors, fasteners: Stainless steel.

1. Precast concrete sill anchors: Hohmann & Barnard, Inc. #441, or approved.

G. Quality standard: PCI MNL 117, Architectural Precast Concrete.

3.1 INSTALLATION

A. Install materials and systems in accordance with manufacturer's instructions and approved submittals. Install materials and systems in proper relation with adjacent construction and with uniform appearance. Coordinate with work of other sections.

B. Tolerance: ¼” in 20 feet for plumb and location.

C. Restore damaged finishes. Clean and protect work from damage

END OF SECTION 03450

04850 STONEWORK

SECTION 04850

STONEWORK

A. Contract Conditions: Work of this Section is bound by the Contract Conditions and

Division 1, bound herewith, in addition to this Specification and accompanying Drawings.

B. Provide cut stonework for exterior applications:

1. Fireplace hearths.

2. Natural thin veneer stone for exterior and interior vertical surfaces.

C. Related Sections:

1. Metal Fabrication: Section 05500

2. Rough Carpentry: Section 06100

3. Joint Sealer: Section 07910

A. Comply with Section 01300 – Submittal Procedures.

B. Product Data: Submit manufacturer's product data on stone, mortar products, and sealant products, including:

1. Surface preparation and installation instructions.

2. Storage and handling instructions.

C. Shop Drawings: Submit manufacturer’s shop drawings, including plans, elevations, sections, and details, indicating layout, dimensions, anchorages, and jointing methods.

D. Selection Samples: Submit mortar color samples.

E. Verification Samples: Submit 2 manufacturer’s full-size samples of natural thin veneer stone for each pattern specified.

F. Warranty: Submit manufacturer’s standard warranty for natural thin veneer stone.

1.3 QUALITY ASSURANCE

A. Manufacturer’s Qualifications: Manufacturer regularly engaged, for preceding 10 years, in manufacture of natural thin veneer stone of similar type to that specified.

B. Mock-Ups: Provide a mock-up for evaluation of surface preparation techniques and application workmanship.

1. Finish areas designated by Architect.

2. Do not proceed with remaining work until workmanship, color, and sheen are approved by Architect.

3. Refinish mock-up area as required to produce acceptable work.

1.4 REFERENCES

A. ACI 530.1/ASCE 6/TMS 602 – Specifications for Masonry Structures.

B. ANSI A118.4 – Specifications for Latex-Portland Cement Mortar.

C. ASTM C 144 – Standard Specification for Aggregate for Masonry Mortar.

D. ASTM C 270 – Standard Specification for Mortar for Unit Masonry.

E. ASTM C 616 – Standard Specification for Quartz Based Dimension Stone.

F. ASTM C 847 – Standard Specification for Metal Lath.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Delivery: Deliver materials to site in manufacturer’s original, unopened containers and packaging, with labels clearly identifying product name and manufacturer.

B. Storage:

1. Store materials in accordance with manufacturer’s instructions.

2. Store materials in manufacturer's unopened packaging until ready for installation.

3. Store stone materials on pallets on dry, level surface and cover with tarps.

4. Do not stack pallets.

5. Mortar: Store mortar under cover in area where air temperature is maintained between 40 degrees F and 110 degrees F (4 degrees C and 43 degrees C).

C. Handling: Protect materials during handling and installation to prevent damage or contamination.

1.7 PROJECT ENVIRONMENTAL REQUIREMENTS

A. Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install natural thin veneer stone under environmental conditions outside manufacturer's limits.

B. Hot and Cold Weather Requirements: ACI 530.1/ASCE 6/TMS 602.

C. Air Temperature: 40 degrees F (4 degrees C) or above during installation of natural thin veneer stone.

D. Mortar Mixing Water: Heat mortar mixing water when air temperature falls below 50 degrees F (10 degrees C).

2.1 HEARTH STONE MANUFACTURER

A. Design is based on Mutual Materials, 2245 Judson Street SE, Salem, OR 97302. (503)

375-3129.

B. Product: Blue Stone Treads.

1. Size: 2” thick x 24” wide.

2.2 NATURAL THIN VENEER STONE

A. Collection: “Camas Basalt Thin Veneer”.

1. Manufacturer: Pacific Stonescape, Inc., Corvallis, OR: www.pacificstonescape.com, or approved.

2. Pattern: Random.

a. Height: Irregular shapes.

b. Length: Irregular to 16 inches (406 mm) across.

c. Nominal Thickness: 1 inch to 1-1/2 inches (25 mm to 38 mm).

d. Color: Dark gray.

e. Material: Gray basalt from the Columbia Gorge.

3. Special Shapes: Provide special shapes as indicated on the Drawings and as follows:

a. Corners

2.3 ACCESSORIES

A. Paper-Backed, Expanded Metal Lath: ASTM C 847; galvanized, self-furring mesh of weight to suit application, backed with paper.

B. Expanded Metal Lath: ASTM C 847; galvanized, self-furring.

C. Lath Anchorage: Tie wire, nails, screws, and other metal supports; galvanized; type and size to suit application and to rigidly secure materials in place.

D. Building Paper: ASTM D 226, No. 30 asphalt saturated felt.

E. Air Barrier: Air/vapor barrier polymetric membrane as specified in Section 07270.

F. Concrete Bonding Agent: Latex type.

G. Setting Buttons and Shims: Lead or plastic.

H. Joint Sealants and Joint Fillers: As specified in Section 07900 (07 90 00).

2.4 MORTAR

A. Mortar:

1. Cement: ASTM C 270.

2. Lime: ASTM C 207.

3. Sand: ASTM C 144, natural or manufactured.

4. Color Pigments: ASTM C 979, mineral oxide.

5. Water: Potable.

6. Pre-Packaged Latex-Portland Cement Mortar: ANSI A118.4.

B. Bonding Agent: Acrylic additive.

C. Sealer: Water-based silane or siloxane masonry sealer, clear.

http://www.pacificstonescape.com/

D. Mortar Mixes:

1. Grouted Joints:

a. Mix Mortar: ASTM C 270, Type S.

b. Add color pigments to mortar in accordance with pigment manufacturer’s instructions.

3.1 EXAMINATION

A. Examine surfaces to receive natural thin veneer stone.

B. Notify Architect of conditions that would adversely affect installation.

C. Do not begin surface preparation or installation until unacceptable conditions are corrected.

D. Do not begin installation until backing structure is plumb, bearing surfaces are level, and substrates are clean and properly prepared.

E. Verify location and secure installation if shelf angles are required.

3.2 SURFACE PREPARATION

A. Prepare surfaces in accordance with manufacturer’s instructions.

B. Clean surfaces thoroughly before installation.

C. Prepare surfaces using methods for achieving best results for substrate under project conditions.

D. Prepare for Installation Over Plywood, Gypsum, or other exterior grade sheathing:

1. Water Resistant Barriers: Cover plywood sheathing with combination of Air Barrier

(first) and Building Paper with joints lapped shingle style a minimum of 4 inches (102 mm).

2. Metal Lath:

a. Install metal lath in accordance with ASTM C 1063.

b. Apply metal lath with long dimension perpendicular to supports and with joints lapped a minimum of 1 inch (25 mm).

c. Secure laps with tie wire where they occur between supports.

3. Fastening Metal Lath:

a. Fasten lath to wood supports using galvanized nails at maximum 6 inches (152

mm) on center vertically and 16 inches (406 mm) on center horizontally.

b. Fasten with a minimum of 1-inch (25-mm) penetration of wood studs.

c. Stop lath 1 inch (25 mm) from finished edges.

E. Prepare for Installation Over Concrete Masonry Units: Adhere stone directly to concrete masonry units with mortar.

F. Prepare for Installation of Thin Veneer Stone:

1. Coordination: Coordinate placement of reinforcement, anchors, accessories, flashings, weep holes, and other moisture-control products specified in other sections.

2. Cleaning: Clean built-in items of loose rust, ice, mud, and other foreign matter before incorporating into wall.

3. Prime or galvanize ferrous metal built into wall.

4. Temporary Bracing:

a. Provide temporary bracing as required during installation of masonry.

b. Maintain bracing in place until building structure provides permanent support.

3.3 INSTALLATION

A. Install thin veneer stone and mortar in accordance with manufacturer’s instructions and

ACI 530.1/ASCE 6/TMS 602.

B. Maintain masonry courses to uniform dimensions. Form vertical and horizontal joints of uniform thickness.

C. Pattern Bond:

1. Lay out work in advance and distribute color range of stone uniformly over total work area.

2. Lay stone with face exposed.

3. Take care to avoid concentration of any 1 color to any 1 wall surface.

4. Maintain approximate 1/2-inch (13-mm) joint, as stone allows.

5. Do not use stacked vertical joints.

D. Placing and Bonding:

1 Dampen substrate as required to reduce excessive suction.

2. Apply mortar in accordance with PCA Plaster (Stucco) Manual to thickness of 1/2 inch to 3/4 inch (13 mm to 19 mm).

3. Do not spread more than workable area of 5 to 10 square feet, so mortar will not set before stone is applied.

4. Lay thin veneer stone in full bed of mortar with full head joints.

5. Work from bottom up, laying corner pieces first.

6. Remove excessive mortar as work progresses.

7. Do not shift or tap veneer stone after mortar has achieved initial set. Where adjustment is required, remove mortar and replace.

8. Isolate top of veneer stone from horizontal structural framing members and slabs or decks with compressible joint filler and sealant as specified in Section 07900 (07 90 00).

E. Joining Work: Where fresh masonry joins partially set masonry.

1. Remove loose stone and mortar.

2. Clean and lightly wet surface of set masonry.

3. To avoid horizontal run of masonry, rack back 1/2…