SECTION 02518

INTERLOCKING PAVERS

PART 1 GENERAL

SECTION INCLUDES

Interlocking concrete paver units.

Sand bed and sand joint filler.

RELATED SECTIONS

Section 02223 - Backfilling: Compacted fill for pavers.

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

Section [______-____________]:	Pavement subbase.

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

Section 02853 - Parking Bumpers:	[Concrete] [Timber] [________] parking bumpers.

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

UNIT PRICE - MEASUREMENT AND PAYMENT

Pavers on Sand Bed:

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

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

REFERENCES

ASTM C936 - Solid Concrete Interlocking Paving Units.

SUBMITTALS

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

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 [________].

EXTRA MATERIALS

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

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

PART 2 PRODUCTS

MANUFACTURERS

[__________________________________] Product [_________].

[__________________________________] Product [_________].

[__________________________________] Product [_________].

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

MATERIALS

Pavers: Conforming to the following:

Type:	[ASTM C936,] Hydraulically pressed concrete of [800] [5,000] [____] psi ([13.8] [34.5] [____] MPa) minimum, 28 day strength.

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

Type:	Extruded concrete of [1000] [____] ([6.9] [____] MPa), 28 day strength.

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

Type:	Precast concrete of [4000] [____] psi ([27.5] [____] MPa), 28 day strength.

Air Entrained:	5 to 7 percent.

Moisture Content:	[7] [____] percent.

Nominal Size:	[__ x __ x __] inch ([__ x __ x __] mm).

Style:	[Herringbone] [Serpentine] [________].

Color:	[________] [Selected from manufacturer's standard range].

Sand for Setting Bed: 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.

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

Spread sand evenly over prepared substrate surface 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 or special shaped units at edge and interruptions. Maintain [tight] [evenly spaced] joints.

[Sprinkle sand over surface and sweep into joints. Moisten joints and 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. Do not tamp unrestrained edges.

END OF SECTION