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1.1 This specification describes all the work required to structurally reinforce, seal, and protect sanitary sewer manholes. Applications include applying a prepackaged cementitious liner that can function as a full depth restoration or a partial depth repair. A uniform high-strength, fiber-reinforced cementitious mortar should be manually sprayed and hand troweled or centrifugally cast in a uniform, prescribed thickness to all cleaned, interior surfaces from the bottom of the frame to the bench. The cementitious liner may be applied to manholes constructed of brick, concrete, block, and various other materials.
1.2 A manufacturer’s approved applicator shall furnish the complete application of the protective, prepackaged cementitious liner material. All of the cleaning, preparation, and application procedures shall be in accordance with the manufacturer’s recommendations.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Manholes are permit required confined spaces in accordance with OSHA definition and should be treated as such, requiring confined space entry permits, appropriate monitoring equipment, and the associated personal protective equipment.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C39/C39M Test Method for Compressive Strength of Cylindrical Concrete Specimens
C109/C109M Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens)
C309 Specification for Liquid Membrane-Forming Compounds for Curing Concrete
C494/C494M Specification for Chemical Admixtures for Concrete
C969 Practice for Infiltration and Exfiltration Acceptance Testing of Installed Precast Concrete Pipe Sewer Lines
C1140/C1140M Practice for Preparing and Testing Specimens from Shotcrete Test Panels
C1244 Test Method for Concrete Sewer Manholes by the Negative Air Pressure (Vacuum) Test Prior to Backfill
C1315 Specification for Liquid Membrane-Forming Compounds Having Special Properties for Curing and Sealing Concrete
F2414 Practice for Sealing Sewer Manholes Using Chemical Grouting
ACI StandardsACI301-05 Specifications for Structural Concrete ACI305R-99 Hot Weather Concreting ACI306R-88 ACI506R Guide to Shotcrete
ICS Number Code 93.030 (External sewerage systems)
UNSPSC Code 47100000(Water and wastewater treatment supply and disposal); 30111500(Concrete and mortars)
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ASTM F2551-09(2016), Standard Practice for Installing a Protective Cementitious Liner System in Sanitary Sewer Manholes, ASTM International, West Conshohocken, PA, 2016, www.astm.orgBack to Top