8−180 Engineer. SECTION 835 SCUPPERS
835.01 DESCRIPTION . This work consists of providing scuppers and connections to their drains
at the locations indicated on the Plans or as directed by the Engineer, all in accordance with these Specifications. 835.02 MATERIALS . Scupper frames and grates shall conform to the requirements of Para. c and Para. d, respectively, of Subsection M.05.04.9 of these Specifications.
835.03 CONSTRUCTION METHODS . The scupper assembly shall be installed, anchored and
supported as shown on the Plans. 835.04 METHOD OF MEASUREMENT . "Scuppers" will be measured by the number of such assemblies actually installed in accordance with the Plans and/or as directed by the Engineer.
835.05 BASIS OF PAYMENT . The accepted quantity of "Scuppers" will be paid for at the contract
unit price per each assembly as listed in the Proposal. The price so-stated constitutes full and complete compensation for all labor, materials and equipment, and all incidental s required to finish the work, complete and accepted by the Engineer. BY EPOXY-RESIN BASE ADHESIVE INJECTION
836.01 DESCRIPTION . This work consists of repairing cracks in concrete by furnishing and
injecting epoxy-resin base adhesives into such cracks. The work also incl udes surface preparation, setting injection ports and cleaning surfaces followi ng repairs. Crack repair work shall be performed at locations indicated on the Plans or as directed by the Engineer, all in accordance with these Specifications. 836.02 MATERIALS . All products indicated below must be listed in the Department’s Approved Materials List. 8−181836.02.1 Injection Material . Injection material shall be a low viscosity, two-part epoxy-resin system conforming to the requirements of ASTM C-881, Type IV. The material shall also be the required grade and class to satisfactorily perform its function.
a.Quality Control . Testing and certification of each lot of the adhesive is required. The manufacturer shall both certify that every batch of t he material conforms to the requirements of this Specification and submit to the Engineer certified test results for each batch.
b.Labeling, Packaging and Storage shall conform to the requirements of ASTM C-881 and shall include the following information:
1.Health hazard warnings, precautions for handling and recommended first aid procedures in case of contact.
2.Mix ratio by volume.
c.Injection Equipment shall be operated either manually or automatically as required by the manufacturer.
d.Surface Seal . A surface seal material as recommended by the adhesive manufacturer shall be used to confine the injection adhesive in t he crack during injection and curing. It shall have adequate strength to hold injection fittings or ports and prevent vent leakage during injection. 836.03 CONSTRUCTION METHODS. 836.03.1 Surface Preparation . All deteriorated concrete adjacent to the cracks and areas of application shall be removed prior to proceeding with crack repairs. Surfaces adjacent to cracks or other areas of application shall be cleaned of dirt, dust, grease, oil, efflorescence or other foreign material matter detrimental to the bond of the epoxy injection - surface seal system. Use of acids or other corrosives will not be permitted. Cleaning methods shall not introduce foreign materials into the crack repair area in such a manner that the penetration of the epoxy adhesive is hindered. Entry ports shall be provided along the crack at intervals recommended by the manufacturer.
836.03.2 Component Ratio Calibration Test . The mixing head of the injection equipment shall be
disconnected and the two adhesive components shall be pumped simultaneously through two independent valved nozzles. Both adhesive com ponents shall be simultaneously discharged during the same time period such that they may be compared to determine the volume. The Engineer, at any time and without prior notification to the Contractor, may request the Contractor to conduct the calibration test specified above. 836.03.3 Epoxy Injection. Epoxy injection shall be performed in accordance with the manufacturer’s recommended methods. If a recommended application procedure is not available, the Contractor shall use the following epoxy injection technique: 8−182
a.Injection of epoxy adhesive shall begin at a lower entry port and continue until there is an appearance of epoxy adhesive at the next entry port adjacent to the entry port being pumped.
b.When epoxy adhesive travel is indicated by appearance at the next adjacent port, injection shall be discontinued on the entry port being pumped, and epoxy injection shall be transferred to next adjacent port where epoxy adhesive has appeared.
c.This epoxy adhesive injection procedure shall continue until all cracks within the crack network between the designated port interval are completely filled.
d.If port to port travel of the epoxy adhesive is not indicated, the work shall immediately be stopped and the Engineer notified.
e.Minimum ambient temperature at time of injection shall be 45 OF or as recommended by the manufacturer.
f.The applicator engaged in the epoxy injection process shall be familiar with the specific epoxy injection method indicated, as well as the operation, maintenance and trouble-shooting of equipment. 836.03.4 Finishing . When cracks are completely filled, epoxy shall be cured for sufficient time in accordance with the manufacturer’s recommendations. Surface seal material and injection adhesive runs or spills shall be removed from concrete surfaces in a manner recommended by the manufacturer and approved by the Engineer. The face of the crack shall be finished flush to the adjacent surface and show no indentations or protrusions caused by the placement of entry ports. 836.04 METHOD OF MEASUREMENT . “Structural Concrete Crack Repair by Epoxy-Resin Base Adhesive Injection” will be measured by the number of linear feet, port to port, actually repaired in accordance with the Plans and/or as directed by the Engineer.
836.05 BASIS OF PAYMENT . The accepted quantity of “Structural Concrete Crack Repair by
Epoxy-Resin Base Adhesive Injection” will be paid for at the concrete unit price per linear foot as listed in the Proposal. The price so-stated constitutes full and complete compensation for all labor, tools, materials, equipment, including scaffolds, and all incidentals required to finish the work, complete and accepted by the Engineer. 8−183SECTION 837 REPAIRS TO STRUCTURAL CONCRETE MASONRY WITH INTEGRALLY COLORED CONCRETE OR PATCHING MORTAR 837.01 DESCRIPTION . This work consists of removing all deteriorated, disintegrated, soft, honeycombed, fractured, or otherwise defective concrete and replacing it with integrally colored Portland cement concrete, or Portland cement mortar at locations indicated on the Plans or as directed by the Engineer. The concrete or mortar shall be of a color, texture and have aggregates from approved sources that closely match the predominant color, texture and aggregates of the existing concrete structure. Repairs shall include, but will not be limited to: removal and disposal of damaged concrete, cleaning and preparing of the bonding surface, cleaning of existing reinforcing steel, placing of additional reinforcing steel where required, application of a bonding agent slurry, and placement of new concrete repair materials to restore the structural elements to the original line, grade, and surface finish (color and texture). The Contractor shall submit a repair plan for each specific type of repair in accordance with the Plans and these Specifications. 837.02 MATERIALS . All proposed repair materials shall conform to the applicable requirements of Subsection 817.02 of these Specifications and/or be listed on the Department’s Approved Materials List. 837.02.1 Aggregate . The fine and coarse aggregates must be approved by the Engineer as to color and texture. 837.02.2 Integrally Colored Concrete . Integrally colored Portland cement concrete shall conform to the applicable requirements of SECTION 601 of these Specifications. The concrete classification and location used shall be as specified on the Plans and/or as directed by the Engineer. 837.02.3 Integrally Colored Patching Mortar . Patching mortar shall conform to the applicable requirements of Subsection 817.02.2 of these Specifications except that the maximum water cement ratio shall not exceed 0.40 by weight. The consistency of the mortar shall meet the application requirements. 837.02.4 Coloring Pigment . Coloring pigments for integrally colored concrete or patching mortar shall meet the requirements of ASTM C979 and be approved by the Engineer. Coloring pigments shall be used in accordance with the manufacturer’s recommendations. 837.02.5 Portland Cement Bonding Grout Slurry . The bonding grout slurry shall have the cement and mortar sand proportioned 1-to-1 by vo lume. Water shall be added in sufficient quantity to form a slurry.
837.02.6 Concrete Anchors. Mechanical concrete anchors shall be hooked type expansion bolts
galvanized in accordance with the applicable requirements of Subsection M.05.04.4, Para. d of these Specifications and shall be of a type approved by the Engineer. 837.02.7 Wire Mesh Reinforcement. Wire mesh shall be galvanized or epoxy coated, in accordance with ASTM A884, welded fabric No. 12 gauge wire (minimum size) spaced two inches
Source: Rhode Island Standard Specifications (Bluebook), 2024 Edition. Pages 514–517 of 826.