Scope –
This section includes the furnishing, delivery, and erection of precast, prestressed concrete hollow core floor and roof slabs. SAY-CORE slabs are to be installed on continuous bearing surfaces prepared true to line and elevation by others. The bearing surfaces shall be such as to provide a minimum of 3 1/2" bearing on masonry and 3" on structural steel supports.

Material –
The SAY-CORE hollow core plank shall be manufactured of high strength concrete, grout key edged, machine extruded slabs. The slabs shall be 6", 8", 10", or 12" depths and 48" standard width. After curing, the slabs shall then be cut and/or ripped to the lengths and widths indicated on the approved SAY-CORE shop drawings. All concrete materials shall be cleaned and properly graded producing concrete having a minimum strength of 3,500 P.S.I. at 24 hours and 6,000 P.S.I. at 28 days. Reinforcing shall be 270K uncoated lo-relaxation strand: per ASTM A-416 specifications latest revisions.

Manufacture –
Manufacturing procedures and tolerances shall be in compliance with PCI manual -116.

Shop Drawings –
SAY-CORE shall provide to the contractor and architect detailed shop drawings, showing the framing plans, plank size, reinforcing, openings, and all sections and details necessary for the proper installation of the deck. Design calculations shall be furnished when required.

Erection –
The SAY-CORE slabs shall be installed by the manufacturer or under his direct supervision, in a tight level position, making sure that the proper angle to the bearing wall is maintained. SAY-CORE shall cooperate with the other trades to permit proper location of opening, columns, grout keys, etc.

Openings –
Openings one plank width or wider to be provided by the SAY-CORE manufacture. Openings not requiring structural headers are to be core drilled or saw cut through the plank by the trades requiring the openings. Openings requiring the cutting of prestressing strands must be coordinated with the SAY-CORE manufacture. Framing of openings requiring structural headers is accomplished with standard SAY-CORE headers. The size and location of all openings and penetrations passing through the plank must be shown on the approved shop drawings.

Structural Bearing Surfaces –
Smooth and level bearing surfaces must be provided by others for the SAY-CORE erection crew. Minimum recommended bearing is 3 1/2" on masonry walls and a minimum of 3" on structural steel.

Non-Load Bearing Partitions –
In order to make allowances for possible temperature movement, non-load bearing partitions should not be connected rigidly to the SAY-CORE planks. Details can be provided by SAY-CORE.

Caulking –
Longitudinal joints between slabs should be caulked with a uniform bead in joint, when the underside of the plank is exposed. When the exposed surface is the finished surface, use nonstaining caulking.

Painting and Finishing –
The underside of the SAY-CORE plank has a smooth steel form finish suitable, without further treatment for textured paint application or acoustic plaster. If the top side of the SAY-CORE plank is not receiving concrete topping or underlayment, it is recommended that a minimum 1/2" self level or be applied.

Erection, Handling –
The grout keys provide a pick-up point for the SAY-CORE special tong type handling equipment. No embedded lifting devices are required. The plank are to be leveled, aligned, and made ready for grouting.

Special Load Conditions –
Special load conditions not covered by the SAY-CORE load tables can usually be designed for by SAY-CORE structural engineers.