SECTION 02712

FOUNDATION DRAINAGE SYSTEMS

PART 1 GENERAL

SECTION INCLUDES

[Building perimeter] [, retaining wall] [and] [under slab-on-fill] weep drainage system.

Filter aggregate [and fabric] and bedding.

PRODUCTS FURNISHED BUT NOT INSTALLED UNDER THIS SECTION

Section [_____-__________]: Placement of pipe sleeves in concrete [[sump] [collection] [________] pits] [foundation walls].

PRODUCTS INSTALLED BUT NOT FURNISHED UNDER THIS SECTION

Section [_____-__________]: Supply of sewer pipe connection couplings for placement by this Section.

RELATED SECTIONS

Section 02207 - Aggregate Materials.

Section [02225 - Trenching] [02222 - Excavating]: Excavating for subdrainage system piping and surrounding filter aggregate.

Section [02225 - Trenching] [02223 - Backfilling]: Backfilling over filter aggregate, up to [subgrade elevation] [underside of fill under floor slab] [________].

Section 02722 - Storm Sewage System:	Connection to [weep drainage system] [[sump] [collection] [________] pit] [________________].

Section 02732 - Sanitary Sewage System.

Section [______-____________]: Pipe outlet at [filter bed] [swale] [french drain pit] [municipal ditch] [________].

Section [______-____________]: Concrete [sump] [collection] [________] pits.

Section 05500 - Metal Fabrications: Access covers and frames [in floor slab] [________________] to cleanouts in weep drainage system.

Section [______-____________]: [Waterproofing] [Dampproofing] with drainage capable protection board at vertical subgrade surfaces.

Section [______-____________]:	Sump pump.

Section 15410 - Plumbing Piping.

UNIT PRICE - BASIS OF MEASUREMENT

Pipe and Fittings:

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

Basis of Payment: Includes [hand trimming] excavation, bedding, pipe and fittings, [filter aggregate,] [filter fabric,] connection to [municipal [storm] sewer] [[sump] [collection] pit] [________________].

REFERENCES

ASTM C4 - Clay Drain Tile.

ASTM C412 - Concrete Drain Tile.

ASTM C700 - Vitrified Clay Pipe, Extra Strength, Standard Strength, and Perforated.

ASTM D2311 - Perforated, Homogeneous Bituminized Fiber Pipe for General Drainage.

ASTM D2729 - Poly(Vinyl Chloride) (PVC) Sewer Pipe and Fittings.

DEFINITIONS

Bedding:	Fill placed under, beside and directly over pipe, prior to subsequent backfill operations.

SUBMITTALS

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

Shop Drawings: Indicate dimensions, layout of piping, high and low points of pipe inverts, gradient of slope between corners and intersections, and [________].

Product Data: Provide data on pipe, pipe accessories, and [________].

Manufacturer's Certificate: Certify that [products] [________] meet or exceed [specified requirements] [___________________].

PROJECT RECORD DOCUMENTS

Submit documents under provisions of Section [01700.] [01720.]

Record location of pipe runs, connections, cleanouts and principle invert elevations.

REGULATORY REQUIREMENTS

Conform to [applicable] [___________] code for [materials and] installation of the work of this section.

FIELD MEASUREMENTS

Verify that field measurements and elevations are as [indicated] [instructed by the manufacturer].

COORDINATION

Coordinate work under provisions of Section [01039.] [________.]

Coordinate the Work with connection to [municipal sewer utility service] [________________], and trenching.

PART 2 PRODUCTS

MANUFACTURERS - PIPE MATERIALS

[__________________________________] Product [_________].

[__________________________________] Product [_________].

[__________________________________] Product [_________].

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

PIPE MATERIALS

Polyvinyl Chloride Pipe:	ASTM D2729; plain end, [4] [6] [____] inch ([100] [150] [____] mm) inside diameter; with required fittings.

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

Bituminous Fiber Pipe: ASTM D2311 with Type [TJ - tapered pipe end and coupling] [BJ - split collar or internal coupling] joint; [4] [6] [____] inch ([100] [150] [____] mm) inside diameter; with required fittings.

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

Clay Pipe: ASTM C4; [Standard] [Extra Quality] [Heavy Duty], [4] [6] [____] inch ([100] [150] [____] mm) inside diameter, with required fittings.

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

Corrugated Plastic Tubing: Flexible type; [4] [3] [____] inch ([100] [75] [____] mm) diameter, with required fittings.

Use [perforated] [unperforated] pipe at subdrainage system; unperforated through sleeved walls.

FILTER AGGREGATE AND BEDDING

Filter Aggregate [and Bedding] Materials: Fill Type [A1] [A2] [A3] as specified in Section [02207] [________].

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

Filter Sand [and Bedding] Materials:	Fill Type [A4] [____] as specified in Section [02207.] [________.]

ACCESSORIES

Pipe Coupling:	Solid [plastic.] [________.]

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

Joint Cover:	[No. [15] [30] asphalt saturated roofing felt] [[10] [____] mil ([0.25] [____] mm) thick polyethylene.] [________________.]

Filter Fabric: Water pervious type, black [polyolefin] [polyester] [_____________]; [________] manufactured by [____________].

Sleeve: [________] type for [foundation wall.] [________.]

PART 3 EXECUTION

EXAMINATION

Verify that [trench cut] [excavated base] is ready to receive work and excavations, dimensions, and elevations are as indicated on [layout] Drawings.

PREPARATION

Hand trim excavations to required elevations. Correct over excavation with [Type [A1] [A4] [____] aggregate.] [lean concrete.] [________.]

Remove large stones or other hard matter which could damage drainage piping or impede consistent backfilling or compaction.

INSTALLATION

Install [and join] pipe and pipe fittings in accordance with pipe manufacturer's instructions.

Place drainage tile on minimum [____] inch ([____] mm) deep bed of [Type [A1] [A4] [____]] filter aggregate.

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

Place drainage tile on clean cut subsoil.

Lay pipe to slope gradients noted on [Drawings] [shop drawings]; with maximum variation from true slope of [1/8] [____] inch ([3] [____] mm) in [10] [____] feet ([3] [____] m).

Loosely butt pipe ends. Place joint cover strip [12] [____] inches ([300] [____] mm) wide, around pipe diameter centered over joint.

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

Place pipe with perforations facing down. Mechanically join pipe ends.

[Install pipe couplings.]

Install [Type [A1] [A4] [____]] aggregate at sides, over joint [covers] and top of pipe. Provide top cover compacted thickness of [12] [____] inches ([300] [____] mm).

[Place filter fabric over levelled top surface of aggregate cover prior to subsequent backfilling operations.]

Place aggregate in maximum [4] [6] [____] inch ([100] [150] [____] mm) lifts, consolidating each lift.

Refer to Section [02223] [________] for compaction requirements. Do not displace or damage pipe when compacting.

Connect to [storm sewer system] [sump pits] [________________] with unperforated pipe [, through installed sleeves].

FIELD QUALITY CONTROL

Field inspection will be performed under provisions of Section [01400.] [________.]

Request inspection prior to [and immediately after] placing aggregate cover over pipe.

PROTECTION

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

Protect pipe and aggregate cover from damage or displacement until backfilling operation begins.

SCHEDULE

Perimeter Drainage: At building exterior perimeter, on both sides of dividing fire wall foundation, and surrounding elevator pit foundation walls; drain to collection pit at north-east corner of crawl space.

Basement Floor Slab Drainage: Underside of slab, in position pipe in rows 6 feet on center; sloping to drain at 1/4 inch per foot to sump pit.

END OF SECTION