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SECTION 02531 <br /> GRAVITY SEWER MANHOLES <br /> PART 1 - GENERAL <br /> 1 .01 SCOPE <br /> The work to be performed under this item shall include the furnishing of all materials, equipment <br /> and labor required for the installation of pre-casts gravity sewer manholes as herein described and as <br /> shown on the Plans. The Contractor shall perform all excavation, backfilling, and related work <br /> required for the construction of the gravity sewer manholes in accordance with the provisions set <br /> forth under the applicable items of this Specification. <br /> 1 .02 REFERENCES <br /> Standard applicable in this Specification shall be : <br /> A. American Society for Testing and Materials (ASTM) <br /> 1 . ASTM A48-76 - Specifications for Gray Iron Castings. <br /> 2 . ASTM C478 -82a - Standard Specification for Pre-cast Reinforced Concrete <br /> Manhole Section <br /> 1 . 03 SUBMITTALS <br /> A. Shop Drawings - Prior to any fabrication or installation work, the Contractor shall <br /> furnish to the Engineer, for review and approval five (5) sets of shop drawings for the <br /> following items. All drawings shall be reviewed, approved and stamped by the <br /> Contractor prior to submittal to the Engineer. <br /> 1 . Pre-cast manholes <br /> B . Manufacturer's Data - Prior to any fabrication or installation work, the Contractor shall <br /> furnish to the Engineer, for review and approval, manufacturer's data for the following <br /> items : <br /> 1 . Manhole frames and covers <br /> 2 . Manhole rainguard boots <br /> 3 . Press seal pipe connectors <br /> 4. "Ram-Nek" mastic joint sealer <br /> PART 2 - MATERIALS <br /> w <br /> 2.01 MANHOLES <br /> A. Pre-cast Manholes - Pre-cast manholes shall conform with the typical manhole details as <br /> shown on the Plan and shall consist of a pre-casts reinforced base, cast monolithically <br /> with a minimum two foot length of barrel section, additional barrel sections and manhole <br /> cones. All concrete used in the construction of pre-cast manholes shall be Type H with a <br /> 28-day compressive strength of 4000 psi . <br /> 02531 — Gravity Sewer Manholes <br /> 02531 - 1 <br />