876CM3024 Salisbury NC Bid Set Specs_Bk02.pdf

PDF 12 MB Posted Nov 27, 2024

Attached to: Salisbury National Cemetery Public Restroom Renovation and Columbarium Cemetery Expansion
Solicitation number: 36C78625R0014
Issued by: Department of Veterans Affairs National Cemetery Administration

About this file

Written by GovTribe AI · Nov 27, 2024

This is a specifications document (Book 2) for a construction project at the Salisbury National Cemetery. The project, managed by the Department of Veterans Affairs National Cemetery Administration, involves public restroom renovation and columbarium cemetery expansion with an estimated construction magnitude between $10-20 million.

The procurement will be issued as a Request for Proposal (RFP) around December 31, 2024, with proposals due 30 days after solicitation publication. This is an SDVOSB set-aside under Public Law 109-461, with NAICS code 236220 (Commercial and Institutional Building Construction) and a small business size standard of $45.0 million. The specifications document contains detailed technical requirements and construction specifications for the restroom renovation and columbarium expansion work to be performed.

View the file

Other files

File	Type	Posted
S02_36C78625R0014 Presolicitation Notice - Modified.pdf	PDF	Jan 8, 2025
876CM3025 Salisbury NC Annex II BID SET DRAWINGS-Bk03.pdf	PDF	Nov 27, 2024
876CM3025 Salisbury NC Annex II BID SET DRAWINGS-Bk01.pdf	PDF	Nov 27, 2024
876CM3024 Salisbury NC BID SET DRAWINGS_Bk02.pdf	PDF	Nov 27, 2024
876CM3025 Salisbury NC Annex II BID SET DRAWINGS-Bk05.pdf	PDF	Nov 27, 2024
876CM3024 Salisbury NC BID SET DRAWINGS_Bk01.pdf	PDF	Nov 27, 2024
876CM3024 Salisbury NC Bid Set Specs_Bk01.pdf	PDF	Nov 27, 2024
S02_36C78625R0014 Presolicitation Notice.pdf	PDF	Nov 27, 2024
876CM3024 Salisbury NC BID SET DRAWINGS_Bk04.pdf	PDF	Nov 27, 2024
876CM3025 Salisbury NC Annex II BID SET DRAWINGS-Bk02.pdf	PDF	Nov 27, 2024
876CM3025 Salisbury NC Annex II Bid Set Specs_Bk02.pdf	PDF	Nov 27, 2024
876CM3025 Salisbury NC Annex II BID SET DRAWINGS-Bk06.pdf	PDF	Nov 27, 2024
876CM3025 Salisbury NC Annex II BID SET DRAWINGS-Bk04.pdf	PDF	Nov 27, 2024
876CM3025 Salisbury NC Annex II Bid Set Specs_Bk01.pdf	PDF	Nov 27, 2024
876CM3024 Salisbury NC BID SET DRAWINGS_Bk05.pdf	PDF	Nov 27, 2024
876CM3025 Salisbury NC Annex II BID SET DRAWINGS-Bk07.pdf	PDF	Nov 27, 2024
876CM3024 Salisbury NC BID SET DRAWINGS_Bk03.pdf	PDF	Nov 27, 2024

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Report of Geotechnical Subsurface Exploration SUMMIT Project No. 7884.G0011 Salisbury National Cemetery August 25, 2023

10121 Pineville Distribution Street, Pineville, North Carolina 28134 www.summit-companies.com

APPENDIX 3 – Asphalt Cores & Hand Auger Borings and Photos

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APPENDIX 4 – Summary of Laboratory Testing

10121 Pineville Distribution St., Pineville, NC 28134 summit-companies.com

September 1, 2023

Mr. Mark Shumpert KCI Technologies, Inc.

3014 Southcross Blvd Rock Hill, South Carolina 29730 Email: mark.shumpert@kci.com

Subject: Report of Additional Geotechnical Services

Summary of Laboratory Test Results Salisbury National Cemetery

501 Statesville Blvd.

Salisbury, North Carolina SUMMIT Project No. 7884.G0011

Dear Mr. Shumpert:

Summit Engineering, Laboratory and Testing, Inc. (SUMMIT) has provided additional services for the subject project that consisted of laboratory testing on soils sampled for the determination of the soil classification and the suitability of the on-site soils. This subsurface exploration was performed in general accordance with our Proposal No. 7884.G0011, dated June 12, 2023. This report summarizes our subsurface exploration to obtain soil samples and the results of our laboratory testing. At the time of report generation, site grading plans and utility plans were not available.

Laboratory Testing Services

While on site, SUMMIT collected soil samples from eleven (11) of the mechanical soil borings and three (3) of the hand augers. The soil samples were transported to SUMMIT’s laboratory for visual examination and laboratory testing. The laboratory testing was performed to better determine the onsite soils’ USCS soil classification. The laboratory testing performed included seventeen (17)

Atterberg Limit tests (ASTM D 4318), seventeen (17) Sieve Analysis w/o Hydrometer tests (ASTM D

Summary of Additional Geotechnical Services August 30, 2023 Salisbury National Cemetery SUMMIT Project No. 7884.G0011

422). The laboratory test results are summarized in the following table and are included in the

Appendix 2 of this report.

Summary of Laboratory Testing

Boring No.

Sample Depth (feet)

Soil Class.

USCS /

Visual Class.

Moisture Content

Atterberg Limit Test Results

Sieve Analysis Test

Results

Liquid Limit

Plastic Limit

Plasticity Index

Percent Passing

#40 Sieve

Percent Passing

#200 Sieve

B-1 1-2.5 ML/ML 12.8 Non-Plastic 91.5 57.2

B-2 6-7.5 SM/SM 13.6 Non-Plastic 77.6 31.6

B-3 3.5-5 GM/ML 12.8 57 46 11 45.3 33.6

B-4 3.5-5 MH/ML 12.1 56 32 24 76.2 50.4

B-5 1-2.5 MH/ML 11.9 56 35 21 91.3 79.3

B-5 8.5-10 ML/ML 18.3 Non-Plastic 79.3 55.7

B-6 1-2.5 MH/ML 12.9 71 51 20 91.1 77.5

B-6 6-7.5 ML/ML 17.5 Non-Plastic 84.4 51.9

B-9 13.5-15 SM/ML 11.6 Non-Plastic 64.4 32.6

B-10 8.5-10 SM/ML 15.3 Non-Plastic 80.6 38.8

B-12 1-2.5 CH/MH 11.7 50 26 24 91.4 67.9

B-12 8.5-10 SM/SM 7.7 Non-Plastic 76.8 32.6

SW-13 2-4 MH/MH 8.4 57 35 22 89.6 68.8

B-16 3.5-5 MH/ML 14.7 63 50 13 87.3 66.6

C-3 1.2-1.33 CL/CL 11.3 36 22 14 89.6 68.8

C-5 1.25-1.7 SM/ML 11.7 Non-Plastic 90.4 28.8

C-6 0.92-1.67 SM/ML 10.5 Non-Plastic 67.2 36.8

Closure

SUMMIT appreciates the opportunity to provide our professional services to you on this project.

If you have any questions concerning the information in this report, or if we can be of further service, please contact us.

Sincerely, SUMMIT ENGINEERING LABORATORY & TESTING, INC.

Christian Payne Brian Cantrell, P.E.

Assistant Project Manager Geotechnical Department Manager

APPENDIX 1 - Laboratory Test Results

APPENDIX 1

Laboratory Test Results

Salisbury National Cemetery Project 876CM3024

Public Restroom Renovations, Repairs, Bid Set and Improvements August 16, 2024

(SHORT FORM) CAST-IN-PLACE CONCRETE 03 30 53 - 1

SECTION 03 30 53

(SHORT-FORM) CAST-IN-PLACE CONCRETE

PART 1 - GENERAL

1.1 DESCRIPTION

A. This section specifies cast-in-place structural concrete and material and mixes for other concrete.

1.2 RELATED WORK

A. Materials testing and inspection during construction: Section 01 45 29, TESTING LABORATORY SERVICES.

B. Concrete roads, walks, and similar exterior site work: Section

32 05 23, CEMENT AND CONCRETE FOR EXTERIOR IMPROVEMENTS.

1.3 TOLERANCES

A. ACI 117.

B. Slab Finishes: ACI 117, F-number method in accordance with ASTM E1155.

1.4 REGULATORY REQUIREMENTS

A. ACI SP-66 - ACI Detailing Manual.

B. ACI 318 - Building Code Requirements for Reinforced Concrete.

1.5 SUSTAINABILITY REQUIREMENTS

A. Materials in this section may contribute towards contract compliance with sustainability requirements. See Section 01 81 11, SUSTAINABLE

DESIGN REQUIRMENTS, for project local/regional materials, low-emitting materials, recycled content, and certified wood requirements.

B. Blended Cement: It is the intent of this specification to reduce CO2 emissions and other environmentally detrimental effects resulting from the production of Portland cement by requiring that all concrete mixes, in aggregate, utilize blended cement mixes to displace Portland cement typically included in conventional construction. Provide the following submittals:

1. Copies of concrete design mixes for all installed concrete.

2. Copies of typical regional baseline concrete design mixes for all compressive strengths used on the Project.

3. Quantities in cubic yards of each installed concrete mix.

C. Biobased Material: For products designated by the USDA’s BioPreferred® program, provide products that meet or exceed USDA recommendations for biobased content, subject to the products compliance with performance and Improvements August 16, 2024

(SHORT FORM) CAST-IN-PLACE CONCRETE 03 30 53 - 2

requirements in this Section. For more information regarding the product categories covered by the BioPreferred® program, visit http://www.biopreferred.gov.

1.6 REGULATORY REQUIREMENTS FOR RECYCLED CONTENT

A. Products and Materials with Post-Consumer Content and Recovered

Materials Content:

1. Contractor is obligated by contract to satisfy Federal mandates for procurement of products and materials meeting recommendations for post-consumer content and recovered materials content; the list of designated product categories with recommendations has been compiled by the EPA - refer to http://www.epa.gov/wastes/conserve/tools/cpg/products/.

2. Materials or products specified by this section may be obligated to satisfy this Federal mandate and Comprehensive Procurement

Guidelines program.

3. The EPA website also provides tools such as a Product Supplier

Directory search engine and product resource guides.

B. Fulfillment of regulatory requirements does not relieve the Contractor of satisfying sustainability requirements stipulated by Section

01 81 11, SUSTAINABLE DESIGN REQUIREMENTS, as it relates to recycled content; additional product and material selections with recycled content may be required, as determined by Contractor’s Sustainability

Action Plan.

1.7 SUBMITTALS

A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT

DATA, AND SAMPLES.

B. Concrete Mix Design.

C. Shop Drawings:

1. Submit Steel Reinforcement Shop Drawings and Product Data to include all information necessary for fabrication and placement of reinforcement.

2. Indicate grades of reinforcing steel.

3. Clearly indicate the splice length for every size and type of bar used.

4. Indicate the type, size and location of all accessories required for the proper assembly, placement, and support of the reinforcement.

http://www.biopreferred.gov/ http://www.epa.gov/wastes/conserve/tools/cpg/products/ and Improvements August 16, 2024

(SHORT FORM) CAST-IN-PLACE CONCRETE 03 30 53 - 3

5. Provide layout drawings of all floor slabs and formed concrete indicating control and expansion joints.

D. Manufacturer's Certificates: Air-entraining admixture, chemical admixtures, curing compounds.

1.8 APPLICABLE PUBLICATIONS

A. Publications listed below form a part of this specification to the extent referenced. Publications are referenced in text by the basic designation only. Comply with applicable provisions and recommendations of the following, except as otherwise shown or specified.

B. American Concrete Institute (ACI):

117-10..................Tolerances for Concrete Construction and

Materials and Commentary

211.1-91(R2009).........Selecting Proportions for Normal Concrete

211.2-98(R2004).........Selecting Proportions for Structural

Lightweight Concrete

305R-10.................Guide to Hot Weather Concreting

306R-10.................Guide to Cold Weather Concreting

SP-66-04 ...............ACI Detailing Manual

318/318M-11.............Building Code Requirements for Structural

Concrete and Commentary

347R-04.................Guide to Formwork for Concrete

C. American Society for Testing and Materials (ASTM):

A185/A185M-07...........Steel Welded Wire Reinforcement, Plain, for

Concrete

A615/A615M-12...........Deformed and Plain Carbon Steel Bars for

Concrete Reinforcement

A996/A996M-09b..........Rail Steel and Axle Steel Deformed Bars for

Concrete Reinforcement

C31/C31M-12.............Making and Curing Concrete Test Specimens in the Field

C33/C33M-13.............Concrete Aggregates

C39/C39M-12a............Compressive Strength of Cylindrical Concrete

Specimens

C94/C94M-13.............Ready Mixed Concrete

C143/C143M-12...........Slump of Hydraulic Cement Concrete

C150/C150M-12...........Portland Cement

C171-07.................Sheet Materials for Curing Concrete and Improvements August 16, 2024

(SHORT FORM) CAST-IN-PLACE CONCRETE 03 30 53 - 4

C172/C172M-10...........Sampling Freshly Mixed Concrete

C173/C173M-12...........Air Content of Freshly Mixed Concrete by the

Volumetric Method

C192/C192M-12a..........Making and Curing Concrete Test Specimens in the Laboratory

C231/C231M-10...........Air Content of Freshly Mixed Concrete by the

Pressure Method

C260/C260M-10a..........Air-Entraining Admixtures for Concrete

C330/C330M-09...........Lightweight Aggregates for Structural Concrete

C494/C494M-13...........Chemical Admixtures for Concrete

C618-12a................Coal Fly Ash and Raw or Calcined Natural

Pozzolan for Use in Concrete

D1751-04(R2008).........Preformed Expansion Joint Filler for Concrete

Paving and Structural Construction

(Nonextruding and Resilient Bituminous Types)

E1155-96(2008)..........Determining FF Floor Flatness and FL Floor

Levelness Numbers

PART 2 - PRODUCTS

2.1 FORMS

A. Wood, plywood, metal, or other materials, approved by COR, of grade or type suitable to obtain type of finish specified.

B. Form releasing agents to be commercial formulations that will not bond with, stain or adversely affect concrete surfaces. Agents must not impair subsequent treatment of concrete surfaces depending upon bond or adhesion nor impede the wetting of surfaces to be cured with water or curing compounds. If special form liners are to be used, follow the recommendation of the form coating manufacturer. Submit manufacturer's recommendation on method and rate of application of form releasing agents.

2.2 MATERIALS

A. Portland Cement: ASTM C150, Type I or II.

B. Fly Ash: ASTM C618, Class C or F including supplementary optional requirements relating to reactive aggregates and alkalis, and loss on ignition (LOI) not to exceed 5 percent.

and Improvements August 16, 2024

(SHORT FORM) CAST-IN-PLACE CONCRETE 03 30 53 - 5

C. Coarse Aggregate: ASTM C33, Size 67. Size 467 may be used for footings and walls over 300 mm (12 inches) thick. Provide Size 7 coarse aggregate for applied topping and metal pan stair fill.

D. Fine Aggregate: ASTM C33.

E. Lightweight Aggregate for Structural Concrete: ASTM C330, Table 1

F. Mixing Water: Fresh, clean, and potable.

G. Air-Entraining Admixture: ASTM C260.

H. Chemical Admixtures: ASTM C494.

I. Vapor Barrier: ASTM E1745, 0.38 mm (15 mil).

J. Reinforcing Steel: ASTM A615 or ASTM A996, deformed. See structural drawings for grade.

K. Welded Wire Fabric: ASTM A185.

L. Expansion Joint Filler: ASTM D1751.

M. Sheet Materials for Curing Concrete: ASTM C171.

N. Abrasive Aggregates: Aluminum oxide grains or emery grits.

O. Liquid Hardener and Dustproofer: Fluosilicate solution or magnesium fluosilicate or zinc fluosilicate. Magnesium and zinc may be used separately or in combination as recommended by manufacturer.

P. Liquid Densifier/Sealer: 100 percent active colorless aqueous siliconate solution.

Q. Grout, Non-Shrinking: Premixed ferrous or non-ferrous, mixed and applied in accordance with manufacturer's recommendations. Grout cannot show settlement or vertical drying shrinkage at 3 days or thereafter based on initial measurement made at time of placement. Grout must produce a compressive strength of minimum 18 MPa (2500 psi) at 3 days and minimum 35 MPa (5000 psi) at 28 days.

2.3 CONCRETE MIXES

A. Design of concrete mixes using materials specified as set forth under

Option C of ASTM C94.

B. Compressive strength at 28 days: Minimum 25 MPa Pa (3000 psi).

C. Establish strength of concrete by testing prior to beginning concreting operation. Test consists of average of three cylinders made and cured in accordance with ASTM C192 and tested in accordance with ASTM C39.

D. Maximum slump for vibrated concrete is 100 mm (4 inches) tested in accordance with ASTM C143.

E. Cement and water factor (See Table I):

TABLE I - CEMENT AND WATER FACTORS FOR CONCRETE

and Improvements August 16, 2024

(SHORT FORM) CAST-IN-PLACE CONCRETE 03 30 53 - 6

Concrete: Strength Non-Air-Entrained Air-Entrained

Min. 28 Day Comp.

Str.

MPa (psi)

Min. Cement kg/m3 (lbs/c.

yd)

Max. Water

Cement Ratio

Min. Cement kg/m3

(lbs/c. yd)

Max. Water

Cement Ratio

35 (5000)1,3 375 (630) 0.45 385 (650) 0.40

30 (4000)1,3 325 (550) 0.55 340 (570) 0.50

25 (3000)1,3 280 (470) 0.65 290 (490) 0.55

25 (3000)1,2 300 (500) * 310 (520) *

1. If trial mixes are used, the proposed mix design must achieve a compressive strength 8.3 MPa (1200 psi) in excess of f'c. For concrete strengths above 35 Mpa (5000 psi), the proposed mix design must achieve a compressive strength 9.7 MPa (1400 psi) in excess of f’c.

2. Lightweight Structural Concrete. Pump mixes may require higher cement values.

3. For concrete exposed to high sulfate content soils maximum water cement ratio is 0.44.

a. Determined by Laboratory in accordance with ACI 211.1 for normal concrete or ACI 211.2 for lightweight structural concrete.

F. Air-entrainment is required for all exterior concrete and as required for Section 32 05 23, CEMENT AND CONCRETE FOR EXTERIOR IMPROVEMENTS.

Air content must conform with ACI 318 Table 4.4.1.

2.4 BATCHING AND MIXING

A. Store, batch, and mix materials as specified in ASTM C94.

1. Job-Mixed: Mix in a batch mixer in manner specified for stationary mixers in ASTM C94.

2. Ready-Mixed: Comply with ASTM C94, except use of non-agitating equipment for transporting concrete to the site will not be permitted. With each load of concrete delivered to project, ready-mixed concrete producer must furnish, in duplicate, certification as required by ASTM C94.

3. Mixing structural lightweight concrete: Charge mixer with 2/3 of total mixing water and all of the aggregate. Mix ingredients for not less than 30 seconds in a stationary mixer or not less than 10 revolutions at mixing speed in a truck mixer. Add remaining mixing and Improvements August 16, 2024

(SHORT FORM) CAST-IN-PLACE CONCRETE 03 30 53 - 7

water and other ingredients and continue mixing. Above procedure may be modified as recommended by aggregate producer.

PART 3 - EXECUTION

3.1 FORMWORK

A. Installation conforms to ACI 347. Sufficiently tight to hold concrete without leakage, sufficiently braced to withstand vibration of concrete, and to carry, without appreciable deflection while remaining within allowable construction tolerances, all dead and live loads to which they may be subjected.

B. Treating and Wetting: Treat or wet contact forms as follows:

1. Coat plywood and board forms with non-staining form sealer. In hot weather cool forms by wetting with cool water just before concrete is placed.

2. Clean and coat removable metal forms with light form oil before reinforcement is placed. In hot weather, cool metal forms by thoroughly wetting with water just before placing concrete.

3. Use sealer on reused plywood forms as specified for new material.

C. Inserts, sleeves, and similar items: Flashing reglets, masonry ties, anchors, inserts, wires, hangers, sleeves, boxes for floor hinges and other items specified as furnished under this and other sections of specifications are required to be in their final position at time concrete is placed - properly located, accurately positioned, built into construction, and maintained securely in place.

D. Construction Tolerances:

1. Set and maintain concrete formwork to assure erection of completed work within tolerances specified to accommodate installation or other rough and finish materials.

2. Properly brace the forms so the set concrete is correct within the allowable construction tolerances when the forms are removed.

3. Remedial work necessary for correcting installations that is in excess of allowable tolerances are the responsibility of the

Contractor.

4. Erected work that exceeds specified tolerance limits must be remedied or removed and replaced, at no additional cost to the

Government.

5. Any remediation work is subject to approval of the COR in advance of the work.

and Improvements August 16, 2024

(SHORT FORM) CAST-IN-PLACE CONCRETE 03 30 53 - 8

6. Permissible surface irregularities for various classes of materials are defined as "finishes" in specification sections covering individual materials. They are to be distinguished from tolerances specified which are applicable to surface irregularities of structural elements.

3.2 REINFORCEMENT

A. Details of concrete reinforcement, unless otherwise shown, in accordance with ACI 318 and ACI SP-66. Support and securely tie reinforcing steel to prevent displacement during placing of concrete.

3.3 VAPOR BARRIER

A. Except where membrane waterproofing is required, place interior concrete slabs on a continuous vapor barrier.

B. Place 100 mm (4 inches) of fine granular fill over the vapor barrier to act as a blotter for concrete slab.

C. Lap joints 150 mm (6 inches) and seal with a compatible pressure-sensitive tape.

D. Patch punctures and tears.

3.4 PLACING CONCRETE

A. Remove water from excavations before concrete is placed. Remove hardened concrete, debris and other foreign materials from interior of forms, and from inside of mixing and conveying equipment. Obtain approval of COR before placing concrete. Provide screeds at required elevations for concrete slabs.

B. Roughen and clean set concrete free from laitance, foreign matter, and loose particles, before placing new concrete on or against concrete which has set.

C. Convey concrete from mixer to final place of deposit by method which will prevent segregation or loss of ingredients. Do not deposit in work concrete that has attained its initial set or has contained its water or cement more than 1 1/2 hours. Do not allow concrete to drop freely more than 1500 mm (5 feet) in unexposed work nor more than 900 mm (3 feet) in exposed work. Place and consolidate concrete in horizontal layers not exceeding 300 mm (12 inches) in thickness. Consolidate concrete by spading, rodding, and mechanical vibrator. Do not secure vibrator to forms or reinforcement. Provide vibration continuously with placing of concrete.

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D. Hot weather placing of concrete: Follow recommendations of ACI 305R to prevent problems in the manufacturing, placing, and curing of concrete that can adversely affect the properties and serviceability of the hardened concrete.

E. Cold weather placing of concrete: Follow recommendations of ACI 306R, to prevent freezing of thin sections less than 300 mm (12 inches) and to permit concrete to gain strength properly, except that use of calcium chloride cannot be used without written approval from COR.

3.5 PROTECTION AND CURING

A. Protect exposed surfaces of concrete from premature drying, wash by rain or running water, wind, mechanical injury, and excessively hot or cold temperature. Curing method is subject to approval by COR.

3.6 FORM REMOVAL

A. Forms remain in place until concrete has sufficient strength to carry its own weight and loads supported. Removal of forms at any time is the

Contractor's sole responsibility.

3.7 SURFACE PREPARATION

A. Immediately remove loose materials, after forms have been removed and work has been examined and approved by RE/COR, and patch all stone pockets, surface honeycomb, or similar deficiencies with cement mortar made with 1 part Portland cement and 2 to 3 parts sand.

B. For exposed surfaces of concrete for the columbarium and memorial walls and walls in their complexes, follow the procedures identified in

Paragraph FINISHES for Exterior Exposed Areas (finished).

C. For columbarium and memorial walls and their complexes, immediately after forms are removed, take steps to prepare and smooth the exposed portions of the concrete. Remove the form marks, including joint marks, fins, burrs and similar projections to produce a smooth surface.

Complete the surface finish to result in a uniform textured surface with homogeneous color, unless surface is to be otherwise treated.

Work must be as approved during the review of the mock-up.

3.8 FINISHES

A. Vertical and Overhead Surface Finishes:

1. Unfinished Areas: Vertical and overhead concrete surfaces exposed in unfinished areas, above suspended ceilings in manholes, and other and Improvements August 16, 2024

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unfinished areas exposed or concealed will not require additional finishing.

2. Interior and Exterior Exposed Areas (to be painted): Fins, burrs and similar projections on surface must be knocked off flush by mechanical means approved by COR and rubbed lightly with a fine abrasive stone or hone. Use an ample amount of water during rubbing without working up a lather of mortar or changing texture of concrete.

3. Interior and Exterior Exposed Areas (finished): Provide grout finish of uniform color and smooth finish treated as follows:

a. After concrete has hardened and laitance, fins and burrs have been removed, scrub concrete with wire brushes. Clean stained concrete surfaces by use of a hone or stone.

b. Apply grout composed of 1 part Portland cement and 1 part clean, fine sand (smaller than 600 micro-m (No. 30) sieve). Work grout into surface of concrete with cork floats or fiber brushes until all pits and honeycomb are filled.

c. After grout has hardened, but still plastic, remove surplus grout with a sponge rubber float and by rubbing with clean burlap.

d. In hot, dry weather use a fog spray to keep grout wet during setting period. Complete finish for any area in same day. Confine limits of finished areas to natural breaks in wall surface. Do not leave grout on concrete surface overnight.

B. Slab Finishes:

1. Scratch Finish: Slab surfaces to receive a bonded applied cementitious application must be thoroughly raked or wire broomed after partial setting (within 2 hours after placing) to roughen surface and ensure a permanent bond between base slab and applied cementitious materials.

2. Floating: Allow water brought to surface by float used for rough finishing to evaporate before surface is again floated or troweled.

Do not sprinkle dry cement on surface to absorb water.

3. Float Finish: Screen and float ramps, stair treads, and platforms, both interior and exterior, equipment pads, and slabs to receive non-cementitious materials, except as specified, to a smooth dense finish. Check for alignment using a straightedge or template after first floating and while surface is still soft. Correct high spots and Improvements August 16, 2024

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by cutting down with a trowel or similar tool and correct low spots by filling in with material of same composition as floor finish.

Remove any surface projections on floated finish by rubbing or dry grinding. Refloat the slab to a uniform sandy texture.

4. Steel Trowel Finish: Applied toppings, concrete surfaces to receive resilient floor covering or carpet, future floor roof and all monolithic concrete floor slabs exposed in finished work and for which no other finish is shown or specified must be steel troweled.

Delay final steel troweling to secure a smooth, dense surface as long as possible, generally when the surface can no longer be dented with finger. During final troweling, tilt steel trowel at a slight angle and exert heavy pressure on trowel to compact cement paste and form a dense, smooth surface. Finished surface must be free of trowel marks, uniform in texture and appearance.

5. Broom Finish: Finish all exterior slabs, ramps, and stair treads with a bristle brush moistened with clear water after the surfaces have been floated.

6. Finished slab flatness (FF) and levelness (FL) values must comply with the following minimum requirements:

Slab On Grade & Shored Suspended

Slabs

Unshored Suspended Slabs

Specified overall value FF 25/FL 20 Specified overall value FF 25

Minimum local value FF 17/FL 15 Minimum local value FF 17

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SHEET INTENTIONALLY LEFT BLANK

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UNIT MASONRY 04 20 00 - 1

SECTION 04 20 00

UNIT MASONRY

PART 1 - GENERAL

1.1 DESCRIPTION

A. This section specifies requirements for construction of masonry unit walls.

1.2 RELATED WORK

A. Cast Stone: Section 04 72 00, CAST STONE MASONRY

B. Steel Lintels and Shelf Angles: Section 05 50 00, METAL FABRICATIONS.

C. Cavity Insulation: Section 07 21 13, THERMAL INSULATION.

D. Flashing: Section 07 60 00, FLASHING AND SHEET METAL.

E. Sealants and Sealant Installation: Section 07 92 00, JOINT SEALANTS.

1.3 SUSTAINABILITY REQUIREMENTS

A. Materials in this section may contribute towards contract compliance with sustainability requirements. See Section 01 81 11, SUSTAINABLE

DESIGN REQUIRMENTS, for project local/regional materials, low-emitting materials, and recycled content.

1.4 SUBMITTALS

A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA

AND SAMPLES.

B. Samples:

1. Face brick, sample panel, 200 mm by 400 mm (8 inches by 16 inches,) showing full color range and texture of bricks, bond, and proposed mortar joints.

2. Anchors, and ties, one each and joint reinforcing 305 mm (12 inches) long.

C. Shop Drawings:

1. Indicate special masonry shapes.

2. Indicate reinforcement, applicable dimensions, and methods of hanging soffit or lintel masonry and reinforcing masonry for embedment of anchors for hung fixtures.

3. Submit shop drawings for fabrication, bending, and placement of reinforcing bars prepared in accordance with ACI 315.

D. Certificates:

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UNIT MASONRY 04 20 00 - 2

1. Submit certificates signed by manufacturer, including name and address of contractor, project location, and the quantity, and date or dates of shipment of delivery to which certificate applies.

2. Indicate that the following items meet specification requirements:

a. Face brick.

b. Identify testing laboratories facilities and qualifications of its principals and key personnel to perform tests specified.

E. Manufacturer's Literature and Data:

1. Anchors, ties, and reinforcement.

2. Shear keys.

3. Reinforcing bars.

1.5 SAMPLE PANEL

A. Before starting masonry, lay up a sample panel in accordance with

Masonry Standards Joint Committee (MSJC) and Brick Industry Association

(BIA).

1. Use masonry units from random cubes of units delivered on site.

2. Include reinforcing, ties, and anchors.

B. Use sample panels approved by COR for standard of workmanship of new masonry work.

C. Use sample panel to test cleaning methods.

D. Sample Panel Size: Minimum 1220mm x 1220mm (4’ x 4’).

1.6 WARRANTY

A. Warranty exterior masonry walls against moisture leaks and subject to terms of "Warranty of Construction", FAR clause 52.246-21, except that warranty period to be five years.

1.7 APPLICABLE PUBLICATIONS

A. Publications listed below form a part of this specification to extent referenced. Publications are referenced in text by the basic designation only. Comply with applicable provisions and recommendations of the following, except as otherwise shown or specified.

B. American Society for Testing and Materials (ASTM):

A615/A615M-12...........Deformed and Plain Carbon-Steel Bars for

Concrete Reinforcement

A675/A675M-03 (2009)....Steel Bars, Carbon, Hot-Wrought, Special

Quality, Mechanical Properties

A951/A951M-11...........Steel Wire for Masonry Joint Reinforcement and Improvements August 16, 2024

UNIT MASONRY 04 20 00 - 3

C67-12..................Sampling and Testing Brick and Structural Clay

Tile

C90-12..................Load bearing Concrete Masonry Units

C476-10.................Grout for Masonry

C612-10.................Mineral Fiber Block and Board Thermal

Insulation

D1056-07................Flexible Cellular Materials - Sponge or

Expanded Rubber

C. American Welding Society (AWS):

D1.4/D1.4M-11...........Structural Welding Code – Reinforcing Steel

D. Brick Industry Association - Technical Notes on Brick Construction

(BIA):

11-2001.................Brick Masonry, Part I

11A–1988................Brick Masonry, Part II

11B–1988................Brick Masonry, Part III Execution

11C-1998................for Brick Masonry Engineered Brick Masonry, Part IV

11D-1988................Brick Masonry Engineered Brick Masonry, Part IV continued

11E-1991................Brick Masonry, Part V

E. Masonry Industry Council:

Hot and Cold Weather Masonry Construction Manual, 1999

F. Masonry Standards Joint Committee; Specifications for Masonry

Structures (TMS 602-11/ACI 530.1-11/ASCE 6-11) (MSJC)

1.8 PRE-INSTALLATION CONFERENCE

A. Convene a meeting on site, after submittals are received and approved but before any work to review drawings and specifications, submittals, schedule, manufacturer instructions, site logistics and pertinent matters of coordination, temporary protection, governing regulations, tests and inspections; participants to include COR and all parties whose work is affected or related to the work of this section.

PART 2 - PRODUCTS

2.1 BRICK

A. Face Brick:

1. ASTM C216, Grade SW, Type FBS.

2. Brick when tested in accordance with ASTM C67: Classified slightly and Improvements August 16, 2024

UNIT MASONRY 04 20 00 - 4

efflorescent or better.

3. Size:

a. Modular.

4. New brick to match existing brick in color and bond.

2.2 REINFORCEMENT

A. Steel Reinforcing Bars: ASTM A615, deformed bars, 420 MPa (Grade 60) for bars No. 10 to No. 57 (No. 3 to No. 18), except as otherwise indicated.

B. Where 6 mm diameter (No. 2) bars are shown, provide plain, round, carbon steel bars, ASTM A675, 550 MPa (Grade 80).

C. Joint Reinforcement:

1. Form from wire complying with ASTM A951.

2. Galvanized after fabrication.

3. Width of joint reinforcement 40 mm (1 5/8-inches) less than nominal width of masonry wall or partition.

4. Cross wires welded to longitudinal wires.

5. Joint reinforcing at least 3000 mm (10 feet) in length.

6. Joint reinforcing in rolls is not acceptable.

7. Joint reinforcing that is crimped to form drip is not acceptable.

8. Maximum spacing of cross wires 400 mm (16 inches) to longitudinal wires.

2.4 ANCHORS, TIES, AND REINFORCEMENT

A. Adjustable Veneer Anchor for Frame Walls:

1. Two piece, adjustable anchor and tie.

2. Anchor and tie may be either type; use only one type throughout.

3. Loop Type:

a. Anchor: Screw-on galvanized steel anchor strap 2.75 mm (0.11 inch) by 19 mm (3/4 inch) wide by 225 mm (9 inches) long, with 9 mm (0.35 inch) offset and 100 mm (4 inch) adjustment. Provide 5 mm (0.20 inch) hole at each end for fasteners.

b. Ties: Triangular tie, fabricated of 5 mm (0.20 inch) diameter galvanized cold drawn steel wire. Ties long enough to engage the anchor and be embedded not less than 50 mm (2 inches) into the bed joint of the masonry veneer.

4. Angle Type:

a. Anchor: Minimum 2 mm (16 gage) thick galvanized steel angle shaped anchor strap. Provide hole in vertical leg for fastener.

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Provide hole near end of outstanding leg to suit upstanding portion of tie.

B. Rigid Anchors: Fabricate from steel bars bent to configuration indicated.

C. Corrugated Wall Tie:

1. Form from 1.5 mm (0.0598 inch) thick corrugated, galvanized steel 30 mm (1-1/4 inches) wide by lengths so as to extend at least 100 mm (4 inches) into joints of new masonry plus 38 mm (1-1/2 inch) turn-up.

2. Provide 5 mm (3/16 inch) hole in turn-up for fastener attachment.

2.5 PREFORMED COMPRESSIBLE JOINT FILLER

A. Thickness and depth to fill the joint as specified.

B. Closed Cell Neoprene: ASTM D1056, Type 2, Class A, Grade 1.

C. Non-Combustible Type: ASTM C612, Type V, 1800 degrees F.

2.6 ACCESSORIES

A. Weeps: Glass fiber ropes, 10 mm (3/8 inch) minimum diameter, 300 mm (12 inches) long.

B. Mesh Weep/Vent: Free-draining mesh; made from polyethylene strands, of length required to extend from exterior face of stone to cavity behind, in color selected from manufacturer's standard.

C. Cavity Drain Material: Recycled…

This is the start of the file's text. The full file is on GovTribe.

File details come from the government source that posted it. Updated Nov 27, 2024.