Attachment 03 Specification.pdf

USDA Building 3 and 4 Exterior Brick Repair Project

SECTION 04210

BRICK MASONRY

PART 1 GENERAL

1.01 SUMMARY

A. Section Includes Face brick veneer on buildings.

B. Products Installed but not Furnished Under this Section

1. Sealant for expansion joint where new brick butts to existing brick is specified in Division 7, Section “Sealants and Caulking”.

2. Brick masonry sealer is specified in Section 9800.

1.02 REFERENCES

A. ASTM

1. ASTM C 144-84, Specification for Aggregates for Masonry Mortar

2. ASTM C 150-85, Specification for Portland Cement

3. ASTM C 207-79, Specification for Hydrated Lime for Masonry Purposes

4. ASTM C 270-84, Specification for Mortar for Masonry Units

5. ASTM C 476-83, Specification for Grout for Masonry

B. ACI 531-79, Building Code Requirements for Concrete Masonry Structures

1.03 QUALITY ASSURANCE

A. Mock-Ups. At an area on the site approved by COR provide a mock-up brick masonry repair about 1'-4" high and 6'-0" long. Do not start brick Work until after acceptance by COR.

PART 2 PRODUCTS

2.01 MANUFACTURERS

A. Dur-O-Wal, Inc., 3115 W. Wilke Road, Arlington Heights, IL 60009, 847-577-6400

B. Hohmann & Barnard, Inc., 30 Rasons Court, P.O. Box 5270, Hauppauge, NY

11788-0270, 316-234-0600

C. Wire-Bond, 400 Roundtree Rd., P.O. Box 24088, Charlotte, NC 28224, 704-523-

5554, 800-849-6722

2.02 MATERIALS

A. Mortar, Type S, ASTM C 270:

1. Ingredients

a. Portland cement: ASTM C 150, Type I or II

b. Hydrated lime: ASTM C 207

c. Aggregate: Clean, sharp, well graded and free from injurious amounts of dust, lumps, shale, alkali, surface coatings, and organic matter, and complying with ASTM C 144.

d. Admixtures: Approved by COR.

e. Water: Free from deleterious acids, alkalis, and organic materials.

2. Proportions: One part portland cement to 1/2 part hydrated lime and not more than 4-1/2 parts sand measured loose and damp.

a. Mechanically batch mix for 3 to 5 minutes, using only enough water for a spreadable and workable mortar.

b. On mortar boards, re-temper if required to maintain high plasticity: Add water within a mortar basin and work the mortar into the water.

c. Discard mortar 2-1/2 hours after initial mixing.

B. Flashings Copper. Where copper flashing is required and no material or gage is indicated on the Drawings provide the highest quality and gage commensurate with referenced standards.

2.03 MANUFACTURED UNITS

A. Brick veneer control joint material: 3/8"x3" closed cell neoprene; Rapid Expansion

Joint model D/A 2015, by Dur-O-Wal, or equivalent by Hohmann & Bannard.

B. Brick veneer anchor: 14 gauge, 1-1/2" corrugated galvanized buck and frame anchors, length and pattern to suit installation.

C. Brick to match size, texture and color of brick on existing building.

D. Embedded flashing materials: 10 oz. weight (0.0135” thick) copper or 0.0156” (28 gage) Stainless steel for fully concealed flashing. Use 16 oz. (0.0216” thick) copper elsewhere.

PART 3 EXECUTION

3.01 ERECTION, INSTALLATION, APPLICATION

A. Installation

1. Install brick reinforcement in the same location and manner as concrete block reinforcement.

2. Wetting Bricks: Provide enough brick suction to hold mortar and to absorb water from mortar and grout. Provide brick damp enough so mortar remains plastic, permitting brick to be leveled and plumbed without destroying bond.

3. Set units plumb, true to line, and with level courses accurately spaced.

4. Use line blocks when possible. When a line pin is necessary, fill the hole immediately after the pin is withdrawn.

5. Use brick that are clean and free from dust and other foreign matter.

6. Except where shown on Drawings, provide running bond with vertical joints centered over units in course below.

7. Bevel bed joints, sloping toward center of wall so bed joints fill when brick is brought to line.

8. Do not furrow bed joints. Avoid fins of bed joints protruding into insulation space.

9. Where bricks are moved or shifted, remove and lay again in fresh mortar.

10. Keep walls continually clean, preventing grout and mortar stains. If grout runs over, clean immediately.

11. Broom stick strike joints to smooth, solid, and watertight surface with concave jointing tool.

12. Burrs or strike-over marks between horizontal and vertical tooled joints will not be accepted.

13. Install expansion joint where new brick meets existing brick wall, using 3/8” thick closed cell neoprene strips. Close joint with sealant.

14. Provide weep holes at bottom of walls at 4’ o.c. and at door heads and all other wall cavity terminations.

15. Match brick courses, include false bond brick with coursing of existing brickwork.

16. Keep air space behind brick free of motar droppings.

17. All existing brick masonry damaged, demolished or dismantled as a result of performing the work will be repaired or replaced according to the requirements of this Section; unless otherwise indicated on the Drawings or by this Section.

18. Install lintels as shown on Drawings. Extend lintels a minimum of 8” beyond edge of opening into masonry.

B. Flashing

1. Form sheet metal accurately and to the dimensions and shapes required, finishing molded and broken surfaces with true, sharp, and straight lines and angles and, where intercepting other members, coping to an accurate fit and soldering securely.

2. Unless otherwise specifically permitted by the COR, turn exposed edges back

1/2”.

3. Form, fabricate and install sheet metal so as to adequately provide for expansion and contraction in the finished work.

4. Weatherproofing:

a. Finish watertight and weathertight where so required.

b. Make lock seam work flat and true to line.

c. Make lock seams and lap seams, at least 1/2” wide.

d. Where lap seams are not soldered, lap according to pitch, but in no case less than 3”.

C. Tolerances. COR may require removal and replacement of broken or chipped units at CONTRACTOR'S expense.

3.02 ADJUSTING, CLEANING

A. Cut out, and re-point if necessary, holes and defective joints.

B. Clean brick exposed surfaces of mortar, grout, and foreign matter. Where ordinary cleaning is not adequate, lightly sandblast at no additional cost to OWNER.

END OF SECTION

SECTION 07900

SEALANTS AND CAULKS

PART 1 GENERAL

1.01 SUMMARY

A. Section Includes

1. Concrete control joint sealant

2. Brick masonry expansion joint caulk

3. Miscellaneous joints, as indicated on Drawings

1.02 REFERENCES

A. ASTM

1. ASTM C 834-76 (1986), Specification for Latex Sealing Compounds

2. ASTM C 920-86, Specification for Sealants

1.03 SUBMITTALS

A. Samples

1. COR will select colors for each sealant and caulk from standard manufacturer's colors.

2. Partially or fully exposed installations approved by COR and concealed installations: Standard gray or black sealant.

B. Quality Control Submittals

1. Verify that sealants are compatible with joint substrates.

1.04 QUALITY ASSURANCE

A. Certifications

1. If two or more different sealants are to be in physical contact with each other, certify each manufacturer's confirmation that its product is compatible with the proposed and adjacent products.

2. Certify from manufacturer that sealant used in concrete joints is compatible.

1.05 DELIVERY, STORAGE, AND HANDLING

A. Packing and Shipping: Deliver in manufacturer's original unopened container, clearly identified for product specified.

B. Storage and Protection: Follow manufacturer's recommendation, with proper precautions concerning shelf life, temperature, humidity, and other storage factors affecting product use and performance.

1.06 WARRANTY. Guarantee sealant joints against adhesive and cohesive failure of the sealant and against water penetration through the sealed joint for 5 years.

PART 2 PRODUCTS

2.01 MANUFACTURERS

A. The Carborundum Company, Fibers Division, P.O. Box 337, Niagara Falls, NY

14302-0808, 712-278-2000

B. Geocel Corporation, P.O. Box 398, Elkart, IN 46515, 219-264-0645

C. Mameco International, Inc., 4475 E 17th Street, Cleveland, OH 44128-3599, 216-752-4400, 800-321-6412

D. Sika Corporation, P.O. Box 297, Lyndhurst, NJ 07071, 201-933-8800

E. Chemrex, Inc./ Sonneborn Bldg. Products Bldg. Products, 789 Shakopee, MN

55435, 612-835-3434

F. Tremco, 3735 Green Road, Beechwood, OH 44122, 216-292-5000

2.02 MATERIALS

A. Sealants, ASTM C 920

1. Brick Expansion Joints, Penetrations, General Caulking: Metals, concrete, masonry, stone, glass, oily or damp surfaces

a. Do not use on bituminous, styrofoam, polycarbonate, or traffic-bearing surfaces.

b. Polyurethane meeting Federal Spec. TT-S-00230C and ASTM C920

Vulkem 116 by Mameco

2. Concrete Control and Expansion Joints: Horizontal expansion and control joints from 1/4" to 1-1/2" wide. Self-leveling (pourable) polyurethane or polysulfide sealant

a. 1-part; joint movement +25%; Shore A hardness 35+. Vulkem 45, by

Mameco; Sonolastic SL-1, by Chemrex, Inc./Sonneborn Bldg. Products

B. Back-up Materials

1. Non-absorbent, non-staining, and bond-breaking such as closed-cell polyethylene or polyurethane foam rod. Closed Cell (CC) Backer Rod, by

Chemrex, Inc./Sonneborn Bldg. Products.

2. Bond Breaker Tape: Polyethylene tape with pressure-sensitive adhesive to prevent three sided adhesion where joint is too shallow for backer rod to be used.

C. Miscellaneous Joints (e.g. door frame perimeters)

1. Polyurethane Caulk, paintable, Vulkem 116 by Mameco.

PART 3 EXECUTION

3.01 EXAMINATION

A. Verify that joint dimensions are within manufacturer's tolerance before installing sealant.

3.02 PREPARATION

A. Surface Preparation

1. Follow manufacturer's recommendations.

2. Concrete surfaces

a. Install on surfaces that are dry, sound, well brushed, and free from dust, oil, grease, and laitance.

b. Remove surface treatment, if any.

3. Steel surfaces

a. Remove mill scale, dust, oil, grease, and protective coatings.

b. Use solvents that leave no residue and that are acceptable to sealant manufacturer.

4. Other surfaces

a. Remove temporary protective coatings, dirt, oil, and grease. Use non-staining solvents recommended by manufacturer.

3.03 ERECTION, INSTALLATION, APPLICATION

A. Installation

1. Install sealants and caulks where shown on Drawings, where needed to prevent passage of moisture and air, and where needed for neat appearance.

a. Apply all materials in this Section according to material manufacturer's recommendations, paying particular attention to limitations concerning temperature, moisture, previous coatings, base and adjacent materials, exposure, and handling.

b. Before installation, verify joint type according to Drawings or as directed by COR, and verify required ratio of joint width to depth. Install backup material where appropriate.

c. Joint tolerance

1) Joint width/depth ratios are critical to sealant/caulk performance.

Comply with manufacturer's limitation.

d. Mask joints where needed to maintain appearance of adjacent surfaces.

e. Apply appropriate primers, as needed, to properly prepared base materials as recommended by sealant/caulk material manufacturer and before installing backer rods or bond-breaker tape.

f. Backup material

1) Install backer rod without puncturing the material and to a uniform depth within 1/8" of specifications.

2) Compress at least 1/3 for closed cell and at least 1/2 for open cell backer rod, unless otherwise required by manufacturer.

3) Avoid lengthwise stretching of tube or rod stock material. Do not twist or braid hose or rod material.

4) Install backup material if needed to reduce joint depth to maximum set by material manufacturer.

g. Bond-breaker

1) Select and apply as recommended by sealant manufacturer in expansion joints that are too shallow for backup foam rod.

h. Strike off, finish, and cure sealants/caulks as shown on Drawings or as recommended by the material manufacturer.

2. Caulking

a. Apply caulk under pressure. Use guns with nozzle size and sufficient pressure to completely fill joints as designed.

3. Expansion joints in concrete

a. Prepare joints as for other sealants, including priming if required, and backup material.

b. Fill joints flush to surface according to manufacturer's recommendations.

3.04 ADJUSTING, CLEANING

A. Remove masking tape immediately after joints have been tooled.

B. Clean sealant and caulk from adjacent surfaces as installing progresses, as recommended by manufacturer.

SECTION 07 19 00

MASONRY SEALER

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Water repellent Silane based sealer for masonry surfaces based on MP2

Master Builders/Sika product. Submit Safety Data and product details for review and approval before application.

B. Related Sections:

1. Section 04210 – Unit Masonry

1.2 REFERENCE STANDARDS

A. ASTM 413 - “Water Absorption of Chemical Resistant Concrete/Masonry”

B. ASTM 642-82 - “Masonry Absorption Test for Brick”.

1.3 SUBMITTALS

A. Product Data: Submit manufacturer’s technical data sheets.

B. Quality Control Submittals:

1. Provide protection plan of surrounding areas and non-work surfaces.

1.4 DELIVERY, STORAGE, AND HANDLING

A. Comply with manufacturer’s ordering instructions and lead-time requirements to avoid construction delays.

B. Deliver materials in manufacturer's original, unopened, undamaged containers with identification labels intact.

C. Store in unopened containers in clean, dry area between 40 and 90 degrees F and out of direct sunlight.

PART 2 - PRODUCTS

2.1 MATERIALS

A. High-performance, penetrating Silane sealer that when dry, fills that penetrate the surfaces but allows the surface to breathe after application on masonry/brick surfaces preventing damage from freeze/thaw cycles. Safe for exterior use.

1. Acceptable Product: Sikagard – 705 L Silane based reactive water repellent impregnation sealer or submitted products that meet the same characteristics submitted for prior approval. Two coats must be applied.

PART 3 - EXECUTION

3.1 SURFACE PREPARATION

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

B. Surfaces shall be clean. Remove dust, dirt, oil, grease, chemical films, coatings and other contaminants before application.

If surface does NOT absorb water, then there is possibly another sealer applied to the surface and sealer should not be applied.

C. Exterior Surfaces: In all cleaning cases rinse well using 3000 psi pressure washer and allow to dry thoroughly before applications

3.2 APPLICATION

A. Apply sealer in accordance with manufacturer’s instructions.

B. Stir material thoroughly before and during application.

C. Back-roll to even out the material and to remove any puddles in low spots.

D. Two coats will be applied to all areas to be sealed.

E. Surface minimum temperature must be above 45 degrees F before application.

3.3 SAFETY

A. Safe storage, handling and use dictate that adequate health and safety precautions be observed with product. User is specifically directed to consult the current Safety

Data Sheet for this product as well as precautions contained on product labeling.