SECTION 02517

STONE PAVERS

PART 1 GENERAL

SECTION INCLUDES

[Granite] [Marble] [Slate] [________] pavers [and curbs].

Sand bed [and sand joint filler].

****** [OR] ******

Cementitious bed and joints.

RELATED SECTIONS

Section 02923 - Landscape Grading: Preparation of subsoil for pavers.

Section 02223 - Backfilling: Compacted fill for pavers.

Section [______-____________]: Prepared subbase for pavers.

Section [______-____________]:	Pavement substrate.

Section 02607 - Manholes and Covers:	[Manholes] [Drains] [and] [________] including frames.

Section [______-____________]:	Snow melting system.

Section 16855 - Heating Cables and Mats.

UNIT PRICE - MEASUREMENT AND PAYMENT

Stone Pavers on Sand Bed:

Basis of Measurement: By the square [foot] [________] ([meter] [________]).

Basis of Payment: Includes preparation of substrate, sand cushion, pavers, sand jointing, finishing.

***** [OR] *****

Stone Pavers on Mortar Bed:

Basis of Measurement: By the square [foot] [________] ([meter] [________]).

Basis of Payment: Includes preparation of substrate, mortar bed, pavers, mortar jointing, finishing.

[Stone Curbs:

Basis of Measurement: By the linear [foot] [________] ([meter] [________]).

Basis of Payment: Includes preparation of substrate, curbs, jointing.]

REFERENCES

ANSI/ASTM A185 - Welded Steel Wire Fabric for Concrete Reinforcement.

ASTM C33 - Concrete Aggregates.

ASTM C144 - Aggregate for Masonry Mortar.

ASTM C150 - Portland Cement.

SUBMITTALS

Submit under provisions of Section [01300.] [________.]

Shop Drawings: Indicate layout of pavers, dimensions of paved areas, elevations, and effected adjacent construction.

Product Data: Provide characteristics of paver unit, dimensions, and special shapes.

Samples:	Submit [two] [_______] samples of each paver size, illustrating style, size, color range and surface texture of units being provided.

Manufacturer's Installation Instructions: Indicate substrate requirements, installation methods, and [________].

ENVIRONMENTAL REQUIREMENTS

Maintain cementitious materials and substrate surface to a minimum of 50 degrees F (10 degrees C) prior to, during, and 48 hours after completion of work.

At end of working day or during rainy weather, cover work exposed to weather with waterproof coverings, securely anchored.

EXTRA MATERIALS

Furnish under provisions of Section [01700.] [________.]

Provide [10] [____] of each paver size.

PART 2 PRODUCTS

FABRICATORS

[__________________________________] Product [_________].

[__________________________________] Product [_________].

[__________________________________] Product [_________].

Substitutions: Under provisions of Section [01600.] [________.]

PAVER MATERIALS

Pavers:	[[________] granite] [[________] marble] [[________] slate] [________] units; [____x____x____] inch ([____x____x____] mm) size, [________] shape, [________] surface finish; [________] color [selected from quarried range available].

Curbs: [[________] granite] [[________] marble] [________] units [____x____x____] inch ([____x____x____] mm) size, [________] shape, [________] surface finish; [________] color [selected from quarried range available].

SAND BED MATERIALS

Sand for Base: Clean [washed] river or bank sand containing maximum of 30 percent particle size of No. 10 (2 mm) sieve.

Sand for Joints:	Clean [washed] fine beach sand of [________] sieve size.

****** [OR] ******

CEMENTITIOUS MATERIALS

Portland Cement:	ASTM C150 Type [1] [____], [white] [grey] color.

Sand: [ASTM C144] [ASTM C33]; [sharp, coarse, clean,

screened sand, free of organic material].

Water:	Potable, not detrimental to mix.

Admixtures: [________________].

Color: Mineral type, non-fading, [___________] color as manufactured by [____________________].

ACCESSORIES

Reinforcing Mesh: [ANSI/ASTM A185;] [2 x 2 inch x 16 gage] [____x____ inch x ____ gage] ([50 x 50 x 1.5] [____x____x____] mm); galvanized steel.

Sealant:	[Urethane, self levelling] [________] type as specified in Section 07900 [including bond breaker from sealant].

Cleaning Solution:	[________________].

MIXES

Cementitious Bed: ASTM C270 Type [____].

****** [OR] ******

Cementitious Bed: Portland cement mix conforming to the following:

Property________________________Value

Compressive Strength (28 day)	[2000] [____] psi ([15] [____] MPa)

Slump	[3 to 4 [____] inches ([75 to 100] [____] mm)

Air Entrainment	[5 to 7] [____] percent

Joint Mortar: Portland cement mix conforming to the following:

Property________________________Value

Compressive Strength (28 day)	[3000] [____] psi ([20] [____] MPa)

Slump	[1 to 2] [____] inches ([25 to 50] [____] mm)

Air Entrainment	[5 to 7] [____] percent

[Color admixture]	[In accordance with manufacturer's instructions]

Add admixtures in accordance with manufacturer's instructions.

Thoroughly mix ingredients in quantities needed for immediate use.

Use within two hours after mixing.	Do not re-temper.

SOURCE QUALITY CONTROL

Provide shop inspection of stone cutting under provisions of Section [01400.] [________.]

Provide shop inspection for quality of cutting methods, size, finish, color.

PART 3 EXECUTION

EXAMINATION

Verify substrate conditions under provisions of Section [01039.] [________.]

Verify that substrate is level, smooth, capable of supporting pavers and imposed loads, and ready to receive work of this Section.

Verify gradients and elevations of substrate are correct.

INSTALLATION - ON SAND SETTING BED

Spread sand evenly over prepared substrate to a [maximum] thickness of [____] inches ([____] mm).

Dampen and roller compact sand to level and even surface.

Screed and scarify top 1/2 inch (12 mm) of sand.

Place paver units in [herringbone] [ashlar] [running bond] [________] pattern, from straight reference edge.

Place half units, special shaped units, and curbs at edge and interruptions. Maintain [tight] [evenly spaced] joints.

[Sprinkle sand over surface, sweep into joints and moisten. Recover with additional sand until firm joints are achieved. Remove excess sand].

Tamp and level paver units with mechanical vibrator until units are firmly bedded, level, and to correct elevation and gradients.

****** [OR] ******

INSTALLATION - MORTAR SETTING BED

[Coordinate placement of snow melting system.]

Set paver units in full cementitious mortar bed of minimum [____] inch ([____] mm) thickness, to support pavers over full bearing surface.

[Place reinforcement [at mid-height] [________] of bed thickness.]

Place paver units in [herringbone] [ashlar] [running bond] [________] pattern, from straight reference edge.

Place half units, special shaped units, and curbs at edges and interruptions. Machine saw partial units.

Maintain tight joints between pavers, and at abutting vertical surfaces and protrusions.

****** [OR] ******

Maintain uniform joint width of [3/8] [____] inch ([9] [____] mm) between pavers, and at abutting vertical surfaces and protrusions. To accommodate mortar, rake out joints 1/4 to 3/8 inch (6 to 9 mm) deep.

Fill joints with mortar.	Pack and work into voids. Neatly tool surface to [concave] [flush] [________] joint. Wet cure.

Form control [and expansion] joints [as detailed] [with sealant [and backing rod] [and bond breaker]] in lieu of pointing mortar. Form control joints [1/2] [____] inch ([13] [____] mm) wide. Form expansion joints [____] inches ([____] mm) wide.

CLEANING

Do not clean pavers until pavers and mortar are dry.

Clean soiled surfaces using cleaning solution. Do not harm pavers, joint materials, or adjacent surfaces.

Use non-metallic tools in cleaning operations.

Rinse surfaces with clean water.

Broom clean paving surfaces. Dispose of excess sand.

PROTECTION OF FINISHED WORK

Protect finished Work under provisions of Section [01500.] [________.]

[Do not permit traffic over unprotected paver surface.] [Protect paver surface with sheets of plywood sheathing.]

END OF SECTION