13R0012_0005.doc

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

The following items are applicable to this modification:

SECTION 00 11 00 - SOLICITATION, OFFER & AWARD

CONT

A.

SECTION 01 11 00– Summary of Work: Delete the section issued with the solicitation and replace with the attached.

B.

SECTION 03 48 24– Precast Concrete Columbarium Units: Delete the section issued with the solicitation and replace with the attached.

C.

SECTION 04 73 01– Columbarium Niche Covers, Marble (GFCI): Delete the section issued with the solicitation and replace with the attached.

SECTION 01 11 00

SUMMARY OF WORK

08/11

PART 1 GENERAL

1.1 WORK COVERED BY CONTRACT DOCUMENTS

1.1.1 Project Description

The Millennium Project will be developed to increase burial space at Arlington National Cemetery (ANC). Construction includes casket burial sections, in-ground sites for ashes of cremated service members, and both columbarium niche courts and niche walls. The site will include two (2) Committal Service Shelters for service participants. Supporting facilities include water fountains, waterlines, sanitary sewer, storm drainage, underground electrical and communications/information systems, stream restoration, landscaping, retaining walls, perimeter fencing, vehicle and pedestrian access roads and walks, and security systems.

1.1.2 Location

The Millennium project is located on a 27-acre site consisting of Section 29 of the existing ANC and the old picnic grounds of Joint Base Fort Myer / Henderson Hall (JBM-HH). The exact location will be shown by the Contracting Officer.

1.1.3 Permits

Contractor shall obtain digging and access permits from Joint Base Fort Myer/Henderson Hall Public Works and ANC Deputy Engineers Office prior to starting Work.

1.2 OCCUPANCY OF PREMISES

Before work is started, the Contractor shall obtain all required dig and environmental permits, arrange with the Contracting Officer a sequence of procedure, means of access, space for storage of materials and equipment, and use of approaches, corridors, and stairways.

1.3 EXISTING WORK

In addition to "FAR 52.236-9, Protection of Existing Vegetation, Structures, Equipment, Utilities, and Improvements":

a. Remove or alter existing work in such a manner as to prevent injury or damage to any portions of the existing work which remain.

b. Repair or replace portions of existing work which have been altered during construction operations to match existing or adjoining work, as approved by the Contracting Officer. At the completion of operations, existing work shall be in a condition equal to or better than that which existed before new work started.

1.4 LOCATION OF UNDERGROUND UTILITIES

Obtain digging permits prior to start of excavation. Verify elevations before installing new work closer than nearest manhole or other structure at which an adjustment in grade can be made.

Notify the Contracting Officer at least 48 hours prior to starting excavation work.

1.5 GOVERNMENT-FURNISHED MATERIAL AND EQUIPMENT

Pursuant to Contract Clause "FAR 52.245-2, Government Property (Fixed Price Contracts)", the Government will furnish the following materials for installation by the Contractor:

AMENDMENT - JULY 18, 2013 CHANGES

The project has a sum certain requirement for 16,400 marble niche covers, based on the contract plans and specifications. Based on past experience, approximately ten (10) percent of the Government furnished marble niche covers have been determined at the project site to be non-compliant and rejected as unsuitable for installation, consistent with the inspection requirement detailed in paragraph 3.1 of Section 04 73 01 COLUMBARIUM NICHE COVERS, MARBLE (GFCI) of these technical specifications. The quantity stated above reflects the actual quantity that will be furnished by the Government and reflects the anticipated rate of non-compliant covers. In the event that the actual rate of rejected marble niche covers experienced on the project exceeds the anticipated rate, the Government shall furnish any additional quantities required. In the event additional quantities are so required, the contractor shall provide notice to the contracting officer no later than 120-days prior to the anticipated date needed for delivery of the additional quantities.

1.5.1 Delivery Schedule

Contractor shall coordiante the material delivery schedule with Contracting Officer.

1.5.2 Duties of Contractor Upon Delivery of Marble Niche Covers to Project Site <HL1>Government-furnished materials will be delivered to the site for the Contractor. As specified in Section 04 73 01 COLUMBARIUM NICHE COVERS, MARBLE (GFCI), Contractor shall offload, store, and protect all Government-furnished marble niche covers from the time of delivery up to and including acceptable installation. Upon delivery of the marble niche covers to the project site, the general condition and quantity shall be verified and documented by Contractor. Once the general condition and quantity have been verified at the site, they shall become the Contractor’s responsibility until installed, and the installation is accepted by the Government. Contractor shall be responsible for the cost of Government furnished marble niche covers that are unsuitable and non-compliant with contract documents due solely the Contractor’s failure to exercise reasonable care in its handling of the marble niche covers from the point of delivery at the project site up to and including acceptable installation.</HL1>

1.6 SALVAGE MATERIAL AND EQUIPMENT

Refer to Section 31 11 00 CLEARING AND GRUBBING for timber salvage requirements.

Items designated by the Contracting Officer to be salvaged shall remain the property of the Government.

The salvaged property shall be segregated, itemized, delivered, and off-loaded at the Government designated storage area located within 25 miles of the construction site.

Contractor shall maintain property control records for material or equipment designated as salvage. Contractor's system of property control may be used if approved by the Contracting Officer. Contractor shall be responsible for storage and protection of salvaged materials and equipment until disposition by the Contracting Officer.

PART 2 PRODUCTS

Not used.

PART 3 EXECUTION

Not used.

-- End of Section --

SECTION 03 48 24

PRECAST CONCRETE COLUMBARIUM UNITS

11/12

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ACI INTERNATIONAL (ACI)

ACI 533.3R

(1970) Fabrication, Handling and Erection of Precast Concrete Wall Panels

ASTM INTERNATIONAL (ASTM)

ASTM A 185/A 185M

(2007) Standard Specification for Steel Welded Wire Reinforcement, Plain, for Concrete

ASTM A 36/A 36M

(2008) Standard Specification for Carbon Structural Steel

ASTM A240/A240M

(2012a) Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications

ASTM A 615/A 615M

(2009b) Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement

ASTM A 82/A 82M

(2007) Standard Specification for Steel Wire, Plain, for Concrete Reinforcement

ASTM C 150

(2009) Standard Specification for Portland Cement

ASTM C 33/C 33M

(2008) Standard Specification for Concrete Aggregates

1.2 SUMMARY

This Section includes the manufacture and installation of precast concrete columbarium units, as shown on the Drawings and specified, including but not limited to the following:

a. Steel reinforcement.

b. Steel embedment plates.

c. Required sleeves.

d. Finished exposed surfaces.

e. Preparation of setting surface.

f. Adhesive.

g. Columbarium fasteners.

h. Niche cover anchor clip assemblies.

Acceptable designs of the columbarium units components are provided as shown on the Drawings. Contractor may use this design for this Work or may propose alternate designs of the corresponding components as follows:

a. Design for alternate columbarium units shall comply with the design criteria per this Section, if required by the Contractor, shall comply with the functional tests as required in this Section.

b. Unless indicated otherwise, all provisions of this Specification shall apply to the Contractor proposed design.

Government may accept or reject part or all of any design proposed by the Contractor.

This section includes finishing and staining/coating of exposed faces of the columbarium units as indicated on drawings or described herein.

This Section includes installation of niche covers, one for each niche of the new columbarium units. Refer to Section 04 73 01 COLUMBARIUM NICHE COVERS, MARBLE (GFCI).

1.2.1 Related Sections

Refer to Section 03 30 00 CAST-IN-PLACE CONCRETE for cast-in-place concrete work, Section 04 73 01 COLUMBARIUM NICHE COVERS, MARBLE (GFCI), Section 07 92 00 JOINT SEALANTS, for materials and workmanship for sealant application and Section 31 00 00 EARTHWORK.

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation; submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings Shop Drawings; G, AE Production Drawings fastening systems Stack and Section Markers SD-03 Product Data Manufacturer's Literature and Data fastener systems mounting hardware Adhesive Stencil Paint SD-04 Samples Sample Units; G, AE Color Charts; G, AE Exposed Surface Finishes; G, AE Mock-Up; G, AE SD-05 Design Data Design Documentation SD-07 Certificates Manufacturer's Qualifications Installer Qualifications Precast Concrete Certificates

1.4 QUALITY ASSURANCE

1.4.1 Manufacturer's Qualifications

Prior to commencement of work, Contractor shall submit documentation regarding the experience of his precast concrete supplier in the design and manufacture of Precast Concrete structures and custom units.

Precast concrete manufacturer's qualified Registered Professional Structural Engineer to certify that precast reinforced concrete conforms to specified requirements.

Precast concrete columbarium units shall be product of manufacturer who has a minimum of 3 years experience in fabrication and erection of the precast concrete columbarium units similar in material design and extent to that indicated on the drawings and specified herein.

1.4.2 Installer Qualifications

Supply and Installation of fastener system shall be by a product installer, both whom have had a minimum of 3 years experience in installation of similar design as indicated on the Drawing.

Installation of niche fronts will be performed by those companies who have had 3 years experience in installation of similar design as indicated in the drawings and specified herein.

1.4.3 Regulatory Requirements

Codes and regulations of the Federal, State and County authorities shall apply.

1.4.4 Precast Concrete Certificates

Manufacturers certificate indicating precast concrete columbarium units meet the requirements of ACI 533.3R and as specified.

1.4.5 Sample Units

Before starting production of precast concrete Columbarium Units, furnish at the site, two complete Precast Concrete Columbarium Units, to demonstrate quality of construction. Commence production of Columbarium Units only after written approval has been obtained from the Contractor.

a. Fabricate to dimensions shown or approved from Sample Units. Replace or correct Columbarium Units that do not comply with the individual dimensions and tolerances.

Submit sample of all fastening systems, mounting hardware and exposed surface finishes including, but not limited to, the following:

a. Stainless Steel Angle.

b. Stainless Steel Bolt, Nut and Washers.

c. Tamper Proof Stainless Steel Bolt.

d. Stainless Steel Rosette.

e. Stainless Steel Expansion Anchors, Bolts and pins.

f. Stainless Steel Ferrule loop insert.

g. Non-Metalic Shims.

h. Exposed front of columbarium with coating applied to show finish (If coating is required).

i. Adhesives and grouts.

1.4.6 Shop Drawings

Complete shop and erection drawings of all precast concrete columbarium units, showing all dimensions and details of construction, installation and relation to adjoining work, reinforcements, anchorage, attachments, inserts, location of all pre-drilled sleeves and other items to be installed in the work of other trades, joint treatment, joint alignment coordinated with cap stone joints, and other work required for a complete installation. Provide evidence that the Contractor to be installing the cast in place concrete foundations for the columbarium and pier units has been contacted prior to any work relating to the footings for the columbarium construction, and that the construction of the concrete support (foundations) work has been coordinated with the precast columbarium unit manufacturer and installer. Government will review and approve proposed deviations from unit segments/joints shown on the Plan.

1.4.7 Production Drawings

Include the following:

a. Elevation view of each structural element.

b. Planametric view of unit.

c. Sections and details to show quantities and position of reinforcing steel, anchors, inserts, and essential embedded and non-embedded hardware for fabrication, handling, transportation and installation.

d. Lifting and erection inserts.

e. Dimensions and finishes.

f. Method of transportation.

g. Method of erection and handling.

1.4.8 Manufacturer's Literature and Data

Include the following information:

a. Each type of Concrete Fastener, including adhesive and anchor devices.

b. Instructions for final cleaning.

c. Concrete stain/coating, including color charts of manufacturers standard color palette (If applicable for this project.)

1.4.9 Mock-Up

Build mockup to verify selections made under sample submittals and to demonstrate aesthetic effects and set quality standards for materials and execution. Include joint details.

1.5 DELIVERY, STORAGE, AND HANDLING

Ship precast concrete columbarium units to site with adequate protection to prevent chipping, breaking and other damage. Materials shall be marked giving proper identifications and location. Store materials in protected areas to prevent damage, injurious effects of weather and inclusion of foreign matter.

1.6 COORDINATION

Coordinate the manufacture and erection of precast concrete columbarium units with related work of other sections of the Specifications. Provide templates for inserts and other devices for anchoring precast concrete columbarium units to the work of other trades, in sufficient time to be built into adjoining construction. Perform cutting, fitting and other related work in connection with erection of precast concrete columbarium unit work.

1.7 WARRANTY

Provide warranty that precast concrete columbarium unit work, including anchorage, joint treatment and related components to be free from all defects in materials and workmanship, including cracking and spalling, and after erection, completed work for period is one year.

PART 2 PRODUCTS

2.1 SYSTEM DESCRIPTION

2.1.1 Design Requirements

The Columbarium Units shall be of the following type, style, and size:

a. Type: Precast concrete, reinforced.

b. Size: Interior and exterior dimensions as indicated on plans.

c. Units shall be cast, shall be no smaller than 2 unit (columns) wide, and no wider than 8 units (columns).

Columbarium top shall be capable of structurally supporting imposed service live load of no less than 50 lb./ sq. ft, and dead loads based on stone veneer thickness and heights, including material composition and element section properties, mortar and grout, and dead loads based on concrete top element sectional properties.

Contractor shall submit to the Contracting Officer for review and approval 5 sets of design documentation showing structural design of the complete Columbarium. This documentation shall include dimensions, methods of construction, and calculations. All design calculations and drawings shall be signed and sealed by qualified Professional Structural Engineer.

2.1.2 Functional Load Tests

If required by the Contracting Officer, a functional load test will be made at the Contractor's expense to insure that the columbarium proposed by the Contractor, as furnished, will be capable of supporting loads stated in Article "Design Requirements." The functional test will consist of two loading conditions.

2.1.2.1 Unconfined Loading

The columbarium will be placed on a flat surface with no support against the sides. The entire top of the columbarium will be subjected to a simulated uniform load of live load of 50 lb./sq. ft and required dead load simulating stone veneer, mortar, and grout as they will be installed. The load will be maintained for no less than 72 hours. At end of the loading period, the maximum deflection of the Columbarium top elements shall be no more than 1/8-inch. Upon removal of the load from the unit the residual deflection shall be no more than 1/16-inch and concrete elements shall be free of all structural distress.

2.1.3 Allowable Tolerances

In addition to tolerances of individual elements required by American Concrete Institute Publication ACI 533.3R, erection tolerances shall be as follows:

a. Variation of anchors and fasteners from dimensions specified: 1/8-inch.

b. Variation in overall dimensions of precast element (height and width): 1/8-inch.

c. Maximum differential between adjacent units in erected position: 1/4-inch.

d. Variation in thickness of precast panels and elements: 1/8-inch.

e. Maximum vertical differential between adjacent columbarium units in installed position: 1/8-inch.

2.2 MATERIALS

2.2.1 Coarse Aggregate

Hard durable aggregate carefully graded from coarse to fine in proportions required to match approved samples.

2.2.2 Aggregate for Back-Up Mix

Fine and coarse aggregate lightweight. ASTM C 33/C 33M. Limit gradation as required to produce the specified appearance and quality of concrete.

2.2.3 Portland Cement

ASTM C 150, Type I and Type II; Color as required.

2.2.4 Structural Steel

ASTM A 36/A 36M.

2.2.5 Steel Fabric Reinforcement

ASTM A 185/A 185M, galvanized.

2.2.6 Steel Wire Reinforcement

ASTM A 82/A 82M, cold drawn.

2.2.7 Reinforcing Steel

ASTM A 615/A 615M, deformed, Grade 60.

2.2.8 Color and Finish

Portland cement color and finish of the niche units shall match Tan Buff per Section 03 33 00 CAST-IN-PLACE ARCHITECTURAL CONCRETE and approved samples and mock-up by the Contracting Officer.

2.2.9 Miscellaneous Galvanized Steel Items

Bolts, nuts, washers, anchors, inserts, and the like for handling, erection, or use by other trades.

2.3 MARBLE NICHE COVERS

AMENDMENT - JULY 18, 2013 CHANGES

Marble niche covers are specified in Section 04 73 01 COLUMBARIUM NICHE COVERS, MARBLE (GFCI).

2.3.1 Niche Cover Attachment Hardware

Arlington National Cemetery Standard stainless steel rosette, mounting brackets, and bolts for complete attachment of the niche covers to the precast columbarium units.

2.4 BACK-UP MATERIAL

Closed cell neoprene, butyl, polyurethane, vinyl or polyethylene foam rod, diameter approximately 1-1/3 times the joint width.

2.5 BOND BREAKERS

Type and material recommended by sealant manufacturer.

2.6 SEALING COMPOUND

ASTM C 920/C 920M, Type S, Grade NS, Class 25.

2.7 FABRICATION

Precast concrete columbarium units shall NOT be fabricated, delivered or incorporated in the work until samples have been approved. Precast concrete shall comply with ACI 533.3R, except as modified herein.

a. Concrete for precast columbarium units shall have minimum compressive strength of 5,000 psi at 28 days.

b. Provide additional steel reinforcing as required for casting, handling and erection loads.

c. Back-up Mix: Porosity, strength, weight and gradation of coarse aggregate shall be as required to produce specified characteristics.

d. Columbarium units shall be cast in steel forms designed to suit shape and finish required and to withstand high frequency vibration. Concrete shall be deposited in oiled forms. Form oil shall be non-staining type. Vibrations, where required, shall be continuous during process of casting to attain through compaction, complete embedment of reinforcement and to assure concrete of uniform and maximum density without segregation of mix and full thickness of precast element is attained.

1) Anchors, lifting devices, provisions for cutouts and openings, dovetail slots, notches, reglets, inserts and similar items required for the work of other trades shall be accurately positioned in forms before casting elements.

2) All fastener location holes, including those for anchoring of units and attachment of niche covers, shall be cast into units. Drilling to precast concrete columbarium units, after fabrication, shall not be acceptable.

e. Cement, aggregate and water shall be obtained from single sources for facing mix of precast concrete work in order to assure regularity of appearance and uniformity of color.

2.7.1 Finish

Concrete exposed-to-view shall have an Architectural finish, smooth and uniform in color, free of bugholes, cracks, chips, and stains. The face of the units shall be processed by the manufacturer, following removal from the forms to insure that the discoloration and blemishes on the niche faces are removed before shipping to the site. Exposed-to-view is defined as faces and inside of niche

2.7.2 Curing

Precast concrete shall be cured as required to develop specified structural characteristics and shall be stored in a manner that will permit all surfaces to cure equally and minimize warping, without staining the exposed faces.

2.8 ACCESSORIES

Attachment hardware shall be Arlington National Cemetery standard stainless steel rosette, mounting brackets, and bolts for complete attachment of the niche covers to the precast columbarium units.

2.8.1 Stack and Section Markers

AMENDMENT - JULY 18, 2013 CHANGES

ASTM A240/A240M Type 304 stainless steel matching markers, rosettes, and hardware at other ANC Columbarium units in type, color, and finish.

Each vertical stack of niches within a Section shall be identified by identification disks with Arabic indicators centered on the corresponding stacks. Stack indicator disks within each section shall begin with the number one (1) starting on the left (when facing the stacks) and proceed in ascending order to the right. Individual niches shall be identified by an Arabic indictor beginning with number one (1) for the bottom row and proceeding up in ascending order. Each niche shall have an identifying number painted on the rear wall of the niche. An example of the painted number would be R-5-4 or Section R, Stack 5, 4th niche up from the bottom.

2.8.2 Adhesive

Epoxy compatible with finishes of the surface for attaching; Fed Spec MMM-A-187. Two-part, epoxy resin based, general purpose paste form adhesive manufactured for non structural bonding of metals, porcelain, ceramics, leather, wood and various porous, and non porous materials to themselves and each other.

2.8.3 Stencil

Provide in either cardboard or metal form.

2.8.4 Paint

Latex-based exterior grade suitable for masonry.

AMENDMENT - JULY 18, 2013 CHANGES

PART 3 EXECUTION

3.1 EXAMINATION

Before beginning installation, inspect work of other trades in-so-far as it effects the work of this Section. Commencing installation of precast concrete columbarium units will be construed as acceptance, as suitable, of such work of other trades. Concrete base for the columbarium units shall be inspected and modified as required, grinding off high spots, to become an acceptable base upon which to install the units. Columbarium units shall be handled in a nearly vertical plane at all times and stacked vertically on wood supports of adequate strength, until erected. Cover and protect precast concrete columbarium units against staining and other damage. Reinstall, realign and otherwise correct improper installed units.

a. Accurately place and securely anchor precast concrete columbarium units to adjoining construction in accordance with approved shop and erection drawings.

b. Installed niche units shall meet alignment unit. Alignment shall be demonstrated using a 10-foot steel straight edge. Within each precast unit, the niche face of niche face shall not deviate more than 1/16-inch using a 5-foot metal straight edge in any direction.

3.2 SETTING

Where shown, joints shall be filled with sealant. Surfaces and other joints for precast concrete columbarium units shall be cleaned of all dust, dirt and other foreign matter. Exposed surfaces of units shall either be protected by anti-graffiti coating at the manufacturer, or shall be protected until accepted by the USACE following installation. Units that have been damaged on exposed surfaces by graffiti, when not coated in advance shall be rejected and removed from the site. Each precast element shall be set level and true to line with uniform joints. Joints required to have sealants shall be kept free of dirt and other contaminants for their full depth. Precautions shall be taken to protect precast concrete work from being damaged and soiled during and after installation. Wedges, spacers or other appliances which are likely to cause staining shall be removed from joints.

3.3 SEALING JOINTS

Where shown or where required to make the work watertight, joints between precast concrete columbarium units and between other precast elements and adjoining masonry, concrete and other materials shall be filled with back-up material for depth extending as required to form joint of depth as shown or recommended by sealant manufacturer. Provide bond breakers, at base of sealant where space for back-up does not exist and to prevent sealant from bonding to material at base of joint.

3.4 CLEANING

After erection is complete, clean precast columbarium units using materials, equipment and methods recommended by manufacturer.

3.5 REPLACEMENT AND REPAIR

Precast concrete columbarium units which are damaged, cracked, stained, improperly fabricated or otherwise defective shall be removed and be replaced. Precast units having minor defects not affecting serviceability or appearance may be repaired when approved by the Owners Designated Representative. Repaired work shall be sound, permanent, flush with adjacent surfaces and of color and texture matching similar adjoining surfaces and shall show no line of demarcation between original and patched surfaces.

Replacement and repairs shall be done at no additional cost to the Government.

3.6 INSTALLATION OF NICHE COVERS

Refer to Section 04 73 01 COLUMBARIUM NICHE COVERS, MARBLE (GFCI) for niche covers.

Install niche covers plumb and level as shown so that exposed faces of niche covers lie in the same plane and that rows of niche covers align both horizontally and vertically. Tighten fasteners to achieve snug fit but do not over tighten to the point where they may crack or break niche covers. Due to the manufacturing tolerances in the niche covers and the allowable deviations from the nominal dimensions, it will be impossible to install the niche covers perfectly and each cover will need to be individually adjusted to meet the requirements. Niche face on all margins, in complete alighment with the covers to the top and bottom and on either side. Niche covers shall sit flush against the niche face on all margins, in complete alignment with the covers to the top and bottom and on either side. The allowable tolerance is a 1/16-inch gap. Coordinate the installation procedures with the Contracting Officer and establish the critical visual line for which the best alignment is to be established.

-- End of Section --

SECTION 04 73 01

COLUMBARIUM NICHE COVERS, MARBLE (GFCI)

11/12

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

MARBLE INSTITUTE OF AMERICA (MIA)

MIA Design Manual (2003) Dimension Stone Design Manual

1.2 SUMMARY

AMENDMENT - JULY 18, 2013 CHANGES

This Section specifies installation by Contractor of blank columbarium niche covers provided by Government made from white marble. This Work includes all labor and materials to install the maximum quantity of niche covers indicated on the drawings.

1.2.1 Related Sections

Refer to Section 03 48 24 PRECAST CONCRETE COLUMBARIUM UNITS for niche cover installation.

1.3 QUALITY ASSURANCE

1.3.1 Regulatory Requirements

Requirements for columbarium niche covers provided by the Government shall comply with standards established by Arlington National Cemetery. Marble shall comply with standards of MIA Design Manual.

1.3.2 On-Site Samples

Maintain and protect on site a minimum of two accepted blank white marble niche cover samples for reference 15-3/4 inches by 11-1/4 inches by 3/4-inch representative of the stone to be used, the finish to be attained, the placement and diameter of the holes to be drilled and testing results. The samples shall be marked clearly on the back with indelible marker, showing contractor name, project number, quarry source of stone and name of stone. Any covers which arrive damaged shall be set aside and the Contracting Officer notified of the total.

These samples will be the basis for comparison of all blank niche covers furnished by Government under this contract.

1.4 DELIVERY, STORAGE, AND HANDLING

AMENDMENT - JULY 18, 2013 CHANGES

Niche covers are Government-Furnished and Contractor-installed. Government will deliver niche covers to the job site. Contractor shall offload, inspect, approve, store, and protect all Government-Furnished marble niche covers throughout installation.

PART 2 PRODUCTS

2.1 MATERIALS

2.1.1 Source of Supply

All stone furnished by the Government shall be obtained from quarries within the United States of America, having adequate capacity and facilities to meet the specified requirements. Cutting and finishing shall be done by a manufacturer equipped to process the material promptly, in order and in strict accordance with these specifications.

2.1.2 Marble Material

Marble shall be white American monumental marble which shall be sound and compact, free from cracks, spalls, chips, holes, calcite lines more than two inches in length, open seams, pits, or other defects that would impair its strength, durability or appearance.

2.1.3 Marble Color

The overall whiteness of the marble exclusive of allowable coloration shall be no less than standard number N8 of the Munsell Neutral Value Scale, 31 Step Scale. Variations in coloration shall blend gradually with the white background. Blotches of color, or clouding and veining which is in sharp contrast with the background whiteness, which would inhibit ease of legibility of the inscription, or which presents an objectionable appearance shall be cause for rejection and shall not be installed.

2.2 MANUFACTURED UNITS

2.2.1 Dimension Tolerances

Niche covers shall conform to the dimensions shown on details in the Drawings.

Each surface shall be parallel to its counterpart and perpendicular within 0.5 degree to its contiguous surfaces. Dimension tolerances are:

a. Width: Plus or minus 1/16 inch.

b. Height: Plus or minus 1/16 inch.

c. Thickness: Plus or minus 1/16 inch.

d. Surface Deviation From A True Plane: Plus or minus 1/16 inch.

e. Hole Placement: The location of the holes shall be perpendicular to the adjoining holes, with the center to center spacing 8-3/4 inch width and 12-1/2 inch height. The center of the holes shall be no more than 1/32-inch in any direction away from the corners of the identified 8-3/4 inch by 12-1/2 inch rectangle.

2.2.2 Finish

The face of each niche cover shall be machine 80 grit honed with a finishing stone to produce a smooth satin finish, free of scratches, saw marks, rust spots and skips. The back face of the niche covers can be sawn finished or better. All edges, of the front, back and corners shall be smooth sawn and finished with a clean 1/16 inch to 1/8 inch aris (eased edge). Four holes are to be core drilled in each cover as shown in detail on Drawings. The holes shall be perpendicular to the face of the cover. The holes shall have smooth side walls, with one centerline and no visible change in the side wall from drilling the hole from opposite faces.

2.2.2.1 Workmanship

Each niche cover shall be free from defects in workmanship. Spalls, chips, cracks, open seams, or abraded edges, will not be permitted and the repair or patching of any such defects is prohibited and will be cause for rejection. The covers shall be free of ink, oil, crayon marks, dirt, coatings, sealers and stone dust. Workmanship quality shall be in accordance with industry standards and practices. Do not install damaged covers.

PART 3 EXECUTION

3.1 EXAMINATION

AMENDMENT - JULY 18, 2013 CHANGES

All materials shall be inspected by the Contractor prior to installation to insure compliance with the contract documents and to insure there is no damage. Although Contractor shall be responsible for performing such inspection, the final determination of suitability and compliance with the contract documents for the marble niche covers is reserved to the Government. Should conditions be different from those indicated on the contract documents, or approved covers show damage, the Contractor shall sort, separate, protect, and track approved and rejected covers. Contractor shall re-crate rejected covers and store well away from accepted covers. Contractor shall protect approved covers during storage, handling, and installation. In the event that the actual rate of rejected niche covers is less than anticipated (as discussed more fully at paragraph 1.5 of Section 01 11 00 SUMMARY OF WORK), the extra compliant niche covers that will not be needed to complete the project shall be termed “spares.” The Contractor shall track, store, protect, and re-crate all spares. Such spares shall be stored well away from rejected niche covers. Contractor shall immediately notify the Contracting Officer of status of covers which are not acceptable.

3.2 INSTALLATION

Refer to Section 03 48 24 PRECAST CONCRETE COLUMBARIUM UNITS for installation requirements. Turn over and set aside spare Blank Marble Niche Covers to the Contracting Officer for future use as part of this Contract.

3.2.1 Installation of ID Disks

Drill holes where indicated in stone cladding and stone edging to receive identification disks. Set disk studs in full bed of adhesive. Remove excess adhesive.

3.3 ID PAINTING

Paint niche identification numbers centered on rear walls of each niche using stencils.

3.4 PROTECTION DURING CLEANING

Protect all installed identification disks and hardware from damage when the stonework is cleaned. Damaged identificaiton disks and hardware shall be replaced with new at no additional cost to the Government.

3.5 CLEANUP

Clean up area of excess material and debris. Clean visible portions of all covers.

-- End of Section --