Addendum 3 03012023

ADDENDUM NO. 3

March 1, 2023

A NEW MULTI-PURPOSE FACILITY

Located on the

HEARD COUNTY HIGH SCHOOL CAMPUS

Franklin, Georgia

CHANGES TO SPECIFICATIONS:

SECTION 000050 – TABLE OF CONTENTS

Page 000050-1/ DIVISION 04 MASONRY

ADD:

[047200 CAST STONE MASONRY]

SECTION 033000 – CAST-IN-PLACE CONCRETE

Page 033000-9/ paragraph 2.13.D CHANGE – Addendum No.2 to Read:

[D. Exterior slab-on-grade: Proportion normal-weight (150 pcf) concrete mixture as follows:

1. Minimum Compressive Strength: 4,000 psi (27.6 MPa) at 28 days.]

SECTION 047200 – CAST STONE MASONRY

[ADD THE SPECIFICATION – LABELED ATTACHMENT NO.1]

SECTION 048100 – MASONRY

Page 048100-4/ paragraph 2.2.B.6.a

CHANGE TO READ:

[a. The Contractor shall include a unit cost of $850 per thousand for the purchase of brick. This cost shall include material cost only. Taxes, freight, labor for installation and handling, and other related costs shall be included in the Base Bid.]

SECTION 074110 – METAL ROOF, WALL & SOFFIT PANELS

Page 074110-14/ paragraph 2.3.A

ADD the following:

[McElroy Metals]

SECTION 088000 – GLAZING

Page 088000-4/ paragraph Part 2

DELETE the information below:

[(NOTE: All glazing for…..be shatter-proof.)]

Page 088000-6/ paragraph 2.6

DELETE:

[2.6 INSULATED PROTECTIVE GLAZING

A. Total Thickness……glazing. See drawings for locations.]

SECTION 133420 – METAL BUILDING SYSTEMS

Page 133420-7/ paragraph 2.1.A

ADD the following names:

[Schulte Building Systems – Cullman, Alabama ]

SECTION 321520 – REINFORCED SOIL SLOPE (RSS) STRUCTURES

Page 321520-7/ paragraph 2.1.C

CLARIFICATION:

[The Reinforced Soil Slope is to be designed per Specification Section 321520 and the Reinforced Backfill (slope backfill) shall be soil material meeting the requirements of Paragraph 2.1.C.

The Contractor will be responsible for obtaining soil from offsite sources that meet these requirements. Soil may be mixed/blended with crush stone, M-10’s, or other materials to meet the Specifications. The importing of soil for the RSS Backfill is part of the Base Bid and will NOT be paid from Allowances and Unit Prices.]

CHANGES TO DRAWINGS:

SHEET C2.1

SITE DEMOLITION PLAN

ADD THE ADDITIONAL DEMOLITION SHOWN BELOW:

SHEET C3.1

SITE LAYOUT & PAVING PLAN

ADD THE REQUIREMENT BELOW:

SHEET C4.1

SITE GRADING & DRAINAGE PLAN

ADD the information noted below:

SHEET C6.1, C6.2, & C6.3

[The Sd4 Sediment Basin shown on Sheets C6.1 & C6.2, below the Reinforced Soil Slope Structure, may remain at the completion of the work. The requirement for the St Riprap at the Conc. Headwall (inv. 746.12) shall remain.]

SHEET A8.01

DETAIL 1/A8.01

CHANGE note regarding the roof insulation to Read:

[STANDING SEAM METAL ROOF ON R-30 RIGID INSULATION WITH ICE & WATER

SHIELD]

SHEET A9.01

DETAIL 1/A9.01

CHANGE note regarding the roof insulation to Read:

[ICE & WATER SHIELD ON R-30 RIGID INSULATION ON 1.5” THICK METAL DECK]

DETAIL 1/A9.01

DELETE:

[2” RIGID INSULATION ON BITUMINOUS DAMPPROOFING ON CMU, EXTEND

FROM BOTTOM TO TOP OF CMU]

CLARIFICATION:

[PROVIDE 2” MIN. THICK SPRAY FOAM INSULATION]

SHEET A9.02

DETAIL 4/A9.02

DELETE:

[2” RIGID INSULATION ON BITUMINOUS DAMPPROOFING ON CMU, EXTEND

FROM BOTTOM TO TOP OF CMU]

CHANGE:

[1.5” MIN. THK SPRAY……, SEE STRUCT.]

TO READ:

[2” MIN. THICK SPRAY FOAM INSULATION]

SHEET S0.00

CONCRETE SCHEDULE:

EXTERIOR SLAB ON GRADE

CHANGE 28 day strength (28 days) to Read:

[4,000]

CLARIFICATION:

[WWM 6 x 6, W1.4 xW1.4 or Fibermesh may be used in the concrete, except the Weight Room 101 requires both WWM 6 x 6, W1.4 xW1.4 and Fibermesh.]

SHEET S1.04

DETAILS B/S1.04, E/S1.04, and G/S1.04

CLARIFICATION:

[The thick shape member at the top of the detail that looks like a channel is not at channel, but is actually a metal stud base track.]

SHEET E1.01

ELECTRICAL SITE PLAN

ADD THE ROUTING OF THE LOW VOLTAGE WIRING AS SHOWN BELOW:

ATTACHMENTS:

Attachment No.1 – SECTION 047200 – CAST STONE MASONRY

END OF ADDENDUM NO. 3

CAST STONE MASONRY 047200-1

SECTION 047200

CAST STONE MASONRY

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section.

1.2 SUMMARY

A. This Section includes the following:

1. Cast stone as shown on the drawings.

B. Related Sections include the following:

1. Division 3 Section "Cast In Place Concrete."

2. Division 4 Section " Masonry" for installing cast stone units in unit masonry.

1.3 DEFINITIONS

A. Cast Stone: Architectural precast concrete building units intended to simulate natural cut stone.

1.4 SUBMITTALS

A. Product Data: Include construction details, material descriptions, dimensions of individual components and profiles, and finishes for cast stone units.

B. Shop Drawings: Show fabrication and installation details for cast stone units. Include dimensions, details of reinforcement and anchorages if any, and indication of finished faces.

1. Include building elevations showing layout of units and locations of joints and anchors.

C. Samples for Initial Selection: For colored mortar.

D. Samples for Verification:

1. For each color and texture of cast stone required, 10 inches (250 mm) square in size.

2. For colored mortar. Make Samples using same sand and mortar ingredients to be used on Project. Label Samples to indicate types and amounts of pigments used.

Rex Text Box

ATTACHMENT NO. 1

CAST STONE MASONRY 047200-2

E. Quality-Control Plan: Manufacturer's written quality-control plan that includes all elements of the Cast Stone Institute's "Quality Control Procedures Required for Plant Inspection."

1. Provide copies of documentation showing compliance with quality-control plan as requested by Architect.

1.5 QUALITY ASSURANCE

A. Manufacturer Qualifications: A qualified manufacturer of cast stone units similar to those indicated for this Project, with sufficient production capacity to manufacture required units.

B. Source Limitations for Cast Stone: Obtain cast stone units through one source from a single manufacturer.

C. Source Limitations for Mortar Materials: Obtain mortar ingredients of a uniform quality, including color, from one manufacturer for each cementitious component and from one source or producer for each aggregate.

D. Mockups: Build mockups to verify selections made under sample submittals and to demonstrate aesthetic effects and set quality standards for materials and execution.

1. Build mockup of typical wall area as shown on Drawings.

1.6 DELIVERY, STORAGE, AND HANDLING

A. Coordinate delivery of cast stone with unit masonry work to minimize the need for on-site storage and to avoid delaying the Work.

B. Pack, handle, and ship cast stone units in suitable packs or pallets.

1. Lift with wide-belt slings; do not use wire rope or ropes that might cause staining. Move cast stone units, if required, using dollies with wood supports.

2. Store cast stone units on wood skids or pallets with nonstaining, waterproof covers. Arrange to distribute weight evenly and to prevent damage to units.

Ventilate under covers to prevent condensation.

C. Store installation materials on elevated platforms, under cover, and in a dry location.

D. Store mortar aggregates where grading and other required characteristics can be maintained and contamination can be avoided.

1.7 PROJECT CONDITIONS

A. Cold-Weather Requirements: Do not use frozen materials or materials mixed or coated with ice or frost. Do not build on frozen substrates. Comply with cold-weather construction requirements contained in ACI 530.1/ASCE 6/TMS 602.

CAST STONE MASONRY 047200-3

1. Cold-Weather Cleaning: Use liquid cleaning methods only when air temperature is 40 deg F (4 deg C) and above and will remain so until cast stone has dried, but not less than 7 days after completing cleaning.

B. Hot-Weather Requirements: Comply with hot-weather construction requirements contained in ACI 530.1/ASCE 6/TMS 602.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

A. In other Part 2 articles where titles below introduce lists, the following requirements apply to product selection:

1. Products: Subject to compliance with requirements, provide one of the products specified.

2. Manufacturers: Subject to compliance with requirements, provide products by one of the manufacturers specified.

2.2 CAST STONE MATERIALS

A. General: Comply with ASTM C 1364 and the following:

B. Portland Cement: ASTM C 150, Type I, containing not more than 0.60 percent total alkali when tested according to ASTM C 114.

C. Coarse Aggregates: Granite, quartz, or limestone complying with ASTM C 33;

gradation as needed to produce required textures and colors as needed to produce required cast stone colors.

D. Fine Aggregates: Natural sand or crushed stone complying with ASTM C 33, gradation as needed to produce required textures and colors as needed to produce required cast stone colors.

E. Color Pigment: ASTM C 979, synthetic mineral-oxide pigments or colored water-reducing admixtures; color stable, free of carbon black, nonfading, and resistant to lime and other alkalis.

F. Admixtures: Do not use admixtures unless specified or approved in writing by Architect.

1. Do not use admixtures that contain more than 0.1 percent water-soluble chloride ions by mass of cementitious materials. Do not use admixtures containing calcium chloride.

2. Use only admixtures that are certified by manufacturer to be compatible with cement and other admixtures used.

3. Air-Entraining Admixture: ASTM C 260. Add to mixes for units exposed to the exterior at manufacturer's prescribed rate to result in an air content of 4 to 6 percent, except do not add to zero-slump concrete mixes.

4. Water-Reducing Admixture: ASTM C 494/C 494M, Type A.

5. Water-Reducing, Retarding Admixture: ASTM C 494/C 494M, Type D.

CAST STONE MASONRY 047200-4

6. Water-Reducing, Accelerating Admixture: ASTM C 494/C 494M, Type E.

G. Reinforcement: Deformed steel bars complying with ASTM A 615/A 615M. Use galvanized or epoxy-coated reinforcement when covered with less than 1-1/2 inches (38

mm) of cast stone material.

1. Epoxy Coating: ASTM A 775/A 775M.

2. Galvanized Coating: ASTM A 767/A 767M.

H. Embedded Anchors and Other Inserts: Fabricated from stainless steel complying with ASTM A 240/A 240M, ASTM A 276, or ASTM A 666, Type 304.

2.3 CAST STONE UNITS – (Manufacturer must be within 150 miles of project)

A. Provide cast stone units complying with ASTM C 1364 using the vibrant dry tamp method.

1. Provide units that are resistant to freezing and thawing as determined by laboratory testing according to ASTM C 666, Procedure A, as modified by ASTM C 1364, or are made from cast stone that has a history of successful resistance to freezing and thawing.

B. Fabricate units with sharp arris and details accurately reproduced with indicated texture on all exposed surfaces, unless otherwise indicated.

1. Slope exposed horizontal surfaces 1:12, unless otherwise indicated.

2. Provide raised fillets at backs of sills and at ends indicated to be built into jambs.

3. Provide drips on projecting elements, unless otherwise indicated.

C. Fabrication Tolerances:

1. Variation in Cross Section: Do not vary from indicated dimensions by more than 1/8 inch (3 mm).

2. Variation in Length: Do not vary from indicated dimensions by more than 1/360 of the length of unit or 1/8 inch (3 mm), whichever is greater, but in no case by more than 1/4 inch (6 mm).

3. Warp, Bow, and Twist: Not to exceed 1/360 of the length of unit or 1/8 inch (3 mm), whichever is greater.

4. Location of Grooves, False Joints, Holes, Anchorages, and Similar Features: Do not vary from indicated position by more than 1/8 inch (3 mm) on formed surfaces of units and 3/8 inch (10 mm) on unformed surfaces.

D. Cure units by one of the following methods:

1. Cure units with steam in enclosed curing room at temperature of 105 deg F (41 deg C) or above and 95 to 100 percent relative humidity for 6 hours.

2. Cure units with dense fog and water spray in enclosed warm curing room at 95 to 100 percent relative humidity for 24 hours.

3. Cure units to comply with one of the following:

a. Not less than 5 days at mean daily temperature of 70 deg F (21 deg C) or above.

CAST STONE MASONRY 047200-5

b. Not less than 6 days at mean daily temperature of 60 deg F (16 deg C) or above.

c. Not less than 7 days at mean daily temperature of 50 deg F (10 deg C) or above.

d. Not less than 8 days at mean daily temperature of 45 deg F (7 deg C) or above.

E. Acid etch units after curing to remove cement film from surfaces to be exposed to view.

F. Colors and Textures: As selected by Architect from manufacturer's full range.

2.4 MORTAR MATERIALS

A. Provide mortar materials that comply with Division 4 Section "Unit Masonry."

B. Portland Cement: ASTM C 150, Type I or II, except Type III may be used for cold-weather construction. Provide natural color or white cement as required to produce mortar color indicated.

C. Hydrated Lime: ASTM C 207, Type S.

D. Portland Cement-Lime Mix: Packaged blend of portland cement complying with ASTM C 150, Type I or Type III, and hydrated lime complying with ASTM C 207, Type S.

E. Masonry Cement: ASTM C 91.

1. Products:

a. Capital Materials Corporation; Flamingo Color Masonry Cement.

b. Lafarge North America Inc.; Magnolia Masonry Cement

c. Lehigh Cement Company; Lehigh Masonry Cement

F. Mortar Cement: ASTM C 1329.

1. Products:

a. Lafarge North America Inc.; Lafarge Mortar Cement

b. Capital Materials Corporation

c. CEMEX USA

G. Mortar Pigments: Natural and synthetic iron oxides and chromium oxides, compounded for use in mortar mixes. Use only pigments with a record of satisfactory performance in masonry mortar.

1. Products:

a. Bayer Corporation, Industrial Chemicals Div.; Bayferrox Iron Oxide Pigments.

b. Davis Colors; True Tone Mortar Colors.

c. Solomon Grind-Chem Services, Inc.; SGS Mortar Colors.

CAST STONE MASONRY 047200-6

H. Colored Cement Product: Packaged blend made from portland cement and lime and mortar pigments, all complying with specified requirements and containing no other ingredients.

1. Formulate blend as required to produce color indicated or, if not indicated, as selected from manufacturer's standard colors.

2. Pigments shall not exceed 10 percent of portland cement by weight.

3. Pigments shall not exceed 5 percent of masonry cement by weight.

4. Products:

a. Colored Portland Cement-Lime Mix:

1) Capital Materials Corporation; Riverton Portland Cement Lime Custom Color.

2) Lafarge North America Inc.; Eaglebond.

3) Lehigh Cement Company; Lehigh Custom Color Portland/Lime

Cement.

b. Colored Masonry Cement:

1) Capital Materials Corporation; Flamingo Color Masonry Cement.

2) Lafarge North America Inc.; Florida Custom Color Masonry.

3) Lehigh Cement Company; Lehigh Custom Color Masonry Cement.

c. Colored Mortar Cement:

1) Lafarge North America Inc.; Magnolia Superbond Mortar Cement.

2) Capital Materials Corporation

3) Lehigh Cement Company

I. Aggregate for Mortar: ASTM C 144.

1. For mortar that is exposed to view, use washed aggregate consisting of natural sand or crushed stone.

2. For joints less than 1/4 inch (6 mm) thick, use aggregate graded with 100 percent passing the No. 16 (1.18-mm) sieve.

3. White-Mortar Aggregates: Natural white sand or crushed white stone.

4. Colored-Mortar Aggregates: Natural sand or crushed stone of color necessary to produce required mortar color.

J. Water: Potable.

2.5 ACCESSORIES

A. Anchors: Type and size indicated, fabricated from stainless steel complying with ASTM A 240/A 240M, ASTM A 276, or ASTM A 666, Type 304.

B. Anchors: Type and size indicated, fabricated from steel complying with ASTM A 36/A 36M, and hot-dip galvanized to comply with ASTM A 123/A 123M.

C. Dowels: Round stainless-steel bars complying with ASTM A 276, Type 304, and 1/2-inch (12-mm) diameter.

CAST STONE MASONRY 047200-7

D. Dowels: Round steel bars complying with ASTM A 36/A 36M or ASTM A 615/A 615M, 1/2-inch (12-mm) diameter, and hot-dip galvanized to comply with ASTM A 123/A 123M.

E. Proprietary Acidic Cleaner: Manufacturer's standard-strength, general-purpose cleaner designed for removing mortar/grout stains, efflorescence, and other construction stains from new masonry surfaces without discoloring or damaging masonry surfaces;

expressly approved for intended use by cast stone manufacturer and expressly approved by cleaner manufacturer for use on cast stone and adjacent masonry materials.

1. Manufacturers:

a. Diedrich Technologies, Inc.

b. EaCo Chem, Inc.

c. ProSoCo, Inc.

2.6 MORTAR MIXES

A. Comply with requirements in Division 4 Section "Unit Masonry" for mortar mixes.

B. Do not use admixtures, including pigments, air-entraining agents, accelerators, retarders, water-repellent agents, antifreeze compounds, or other admixtures, unless otherwise indicated.

1. Do not use calcium chloride in mortar.

2. Limit cementitious materials in mortar to portland cement [mortar cement,] and lime.

C. Comply with ASTM C 270, Proportion Specification.

1. For setting mortar, use Type S.

2. For pointing mortar, use Type N.

D. Pigmented Mortar: Use colored cement product.

1. Pigments shall not exceed 10 percent of portland cement by weight.

2. Pigments shall not exceed 5 percent of masonry cement by weight.

3. Mix to match Architect's sample.

E. Colored-Aggregate Mortar: Produce required mortar color by using colored aggregates and natural color or white cement as necessary to produce required mortar color.

1. Mix to match Architect's sample.

2.7 SOURCE QUALITY CONTROL

A. Employ an independent testing agency to sample and test cast stone units according to

ASTM C 1364.

1. Include one test for resistance to freezing and thawing.

CAST STONE MASONRY 047200-8

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine substrates and conditions, with Installer present, for compliance with requirements for installation tolerances and other conditions affecting performance of cast stone.

1. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 SETTING CAST STONE IN MORTAR

A. Install cast stone units to comply with requirements in Division 04 Section "Unit Masonry."

B. Set cast stone as indicated on Drawings. Set units accurately in locations indicated with edges and faces aligned according to established relationships and indicated tolerances.

1. Install anchors, supports, fasteners, and other attachments indicated or necessary to secure units in place.

C. Wet joint surfaces thoroughly before applying mortar or setting in mortar.

D. Set units in full bed of mortar with full head joints, unless otherwise indicated.

1. If not indicated, set units with joints 1/4 to 3/8 inch (6 to 10 mm) wide.

2. Build anchors and ties into mortar joints as units are set.

3. Fill dowel holes and anchor slots with mortar.

4. Fill collar joints solid as units are set.

5. Build concealed flashing into mortar joints as units are set.

6. Keep head joints in coping and other units with exposed horizontal surfaces open to receive sealant.

7. Keep joints at shelf angles open to receive sealant.

E. Rake out joints for pointing with mortar to depths of not less than 3/4 inch (19 mm).

Rake joints to uniform depths with square bottoms and clean sides. Scrub faces of units to remove excess mortar as joints are raked.

F. Point mortar joints by placing and compacting mortar in layers not greater than 3/8 inch (10 mm). Compact each layer thoroughly and allow it to become thumbprint hard before applying next layer.

G. Tool exposed joints slightly concave when thumbprint hard, using a jointer larger than joint thickness, unless otherwise indicated.

H. Provide expansion, control, and pressure-relieving joints of widths and at locations indicated. Keep joints free of mortar and other rigid materials.

1. Form open joint of width indicated, but not less than 3/8 inch (10 mm).

CAST STONE MASONRY 047200-9

I. Prepare joints indicated to receive sealant and apply sealant of type and at locations indicated to comply with applicable requirements in Division 7 Section "Joint Sealants."

1. Prime cast stone surfaces to receive sealant and install compressible backer rod in joints before applying sealant, unless otherwise indicated.

3.3 SETTING ANCHORED CAST STONE WITH SEALANT-FILLED JOINTS

A. Set cast stone as indicated on Drawings. Set units accurately in locations indicated with edges and faces aligned according to established relationships and indicated tolerances.

1. Install anchors, supports, fasteners, and other attachments indicated or necessary to secure units in place.

2. Shim and adjust anchors, supports, and accessories to set cast stone in locations indicated with uniform joints.

B. Keep cavities open where unfilled space is indicated between back of cast stone units and backup wall; do not fill cavities with mortar or grout.

C. Fill anchor holes with sealant.

1. Where dowel holes occur at pressure-relieving joints, provide compressible material at ends of dowels.

D. Set cast stone supported on clip or continuous angles on resilient setting shims. Use material of thickness required to maintain uniform joint widths. Hold shims back from face of cast stone a distance at least equal to width of joint.

E. Keep joints free of mortar and other rigid materials. Remove temporary shims and spacers from joints after anchors and supports are secured in place and cast stone units are anchored. Do not begin sealant installation until temporary shims and spacers are removed.

1. Form open joint of width indicated, but not less than 3/8 inch (10 mm).

F. Prepare joints and apply sealant of type and at locations indicated to comply with applicable requirements in Division 7 Section "Joint Sealants."

1. Prime cast stone surfaces to receive sealant and install compressible backer rod in joints before applying sealant, unless otherwise indicated.

3.4 INSTALLATION TOLERANCES

A. Variation from Plumb: Do not exceed 1/8 inch in 10 feet (3 mm in 3 m), 1/4 inch in 20 feet (6 mm in 6 m), or 1/2 inch (12 mm) maximum.

B. Variation from Level: Do not exceed 1/8 inch in 10 feet (3 mm in 3 m), 1/4 inch in 20 feet (6 mm in 6 m), or 1/2 inch (12 mm) maximum.

C. Variation in Joint Width: Do not vary joint thickness more than 1/8 inch in 36 inches (3 mm in 900 mm) or one-fourth of nominal joint width, whichever is less.

CAST STONE MASONRY 047200-10

D. Variation in Plane between Adjacent Surfaces (Lipping): Do not vary from flush alignment with adjacent units or adjacent surfaces indicated to be flush with units by more than 1/16 inch (1.5 mm), except due to warpage of units within tolerances specified.

3.5 ADJUSTING AND CLEANING

A. Remove and replace stained and otherwise damaged units and units not matching approved Samples. Cast stone may be repaired if methods and results are approved by Architect.

B. Replace units in a manner that results in cast stone matching approved Samples, complying with other requirements, and showing no evidence of replacement.

C. In-Progress Cleaning: Clean cast stone as work progresses.

1. Remove mortar fins and smears before tooling joints.

2. Remove excess sealant immediately, including spills, smears, and spatter.

D. Final Cleaning: After mortar is thoroughly set and cured, clean exposed cast stone as follows:

1. Remove large mortar particles by hand with wooden paddles and nonmetallic scrape hoes or chisels.

2. Test cleaning methods on sample; leave one sample uncleaned for comparison purposes. Obtain Architect's approval of sample cleaning before proceeding with cleaning of cast stone.

3. Protect adjacent surfaces from contact with cleaner by covering them with liquid strippable masking agent or polyethylene film and waterproof masking tape.

4. Wet surfaces with water before applying cleaners; remove cleaners promptly by rinsing thoroughly with clear water.

5. Clean cast stone by bucket-and-brush hand-cleaning method described in BIA Technical Notes No. 20.

6. Clean cast stone with proprietary acidic cleaner applied according to manufacturer's written instructions.

END OF SECTION 04720

B. Hot-Weather Requirements: Comply with hot-weather construction requirements contained in ACI 530.1/ASCE 6/TMS 602.

H. Embedded Anchors and Other Inserts: Fabricated from stainless steel complying with ASTM A 240/A 240M, ASTM A 276, or ASTM A 666, Type 304.

J. Water: Potable.