8−67bushhammering. No chemical retardant applied to the forms shall be used. Enough surface mortar shall be removed in order to expose the aggregate particles in slight relief and provide an overall surface with a uniform rough texture. Prior to finishing any concrete, the Contractor shall cast a test panel approximately 4 foot by 4 foot in a vertical position with a joint in the form work near the approximate middle of the panel and demonstrate the proposed method. This method shall be satisfactory to the Engineer who shall be the sole judge of its acceptability. In the event the first trial panel does not produce satisfactory results, one or more trial panels shall be cast until a satisfactory finish is obtained. The surfaces to be finished shall be carefully cured. After the forms have been removed all holes shall be patched with an approved mortar and any fins or other protuberances removed to present a roughly even surface. If bushhammering is to be employed, the use of air tools is preferable. No finishing shall be started until the concrete has attained its 28-day strength. Particular care shall be taken when finishing bevels or corners so as not to damage the lines. After the surfaces are fi nished, all dust and loose particles shall be removed by brushing with stiff wire brushes or air blasting.
808.04 Method of Measurement.
808.04.1 Structure Concrete Masonry. "Structure Concrete Masonry" of the types described in this Section will be measured by the number of cubi c yards of such concrete actually provided in
accordance with the Plans and/or as directed by the Engineer.
a.Deductions. Deduction in volume will be allowed for the following elements embedded in concrete:
1.The volume of major structural steel with the exception of steel sheet piling.
2.The volume of timber piles on the basis of 0.8 cubic feet per linear foot of pile.
3.The volume of concrete on combination piles. No deduction in volume will be allowed for reinforcing steel, floor drains, weep holes, drainage holes, expansion joint material and minor structural elements embedded in concrete. 808.04.2 Joint Fillers. "Joint Fillers" of the types described in this Section will be measured by the number of square feet of those materials actually installed in accordance with the Plans and/or as directed by the Engineer. 808.04.3 Joint Sealants. "Joint Sealants" of the types described in this Section will be measured by the number of cubic inches or the number of linear feet, as the case may be, actually installed in accordance with the Plans and/or as directed by the Engineer. 808.04.4 Concrete Finishes. "Rubbed Finish" and "Bushhammered, or Sand Blasted Finish" will be measured by the number of square feet actually applied in accordance with the Plans and/or as directed by the Engineer. Float finish and concrete deck or wearing surface finish will not be 8−68 measured for payment.
808.05 Basis of Payment.
808.05.1 Structure Concrete Masonry. The accepted quantities of "Structure Concrete Masonry"
will be paid for at the respective contract unit prices per cubic yard as listed in the Proposal. The prices so-stated constitute full and complete compensation for all labor, materials and equipment, and all incidentals required to finish the work, complete and accepted by the Engineer. 808.05.2 Joint Fillers. The accepted quantities of "Joint Fillers" will be paid for at the respective contract unit prices per square foot as listed in the Proposal. The prices so-stated constitute full and complete compensation for all labor, materials, and equipment, and all incidentals required to finish the work, complete and accepted by the Engineer. 808.05.3 Joint Sealants. The accepted quantities of "Joint Sealants" will be paid for at the respective unit prices per cubic inch or linear foot, as the case may be, as listed in the Proposal. The prices so-stated constitute full and complete compensation for all labor, materials and equipment, and all incidentals required to finish the work, complete and accepted by the Engineer.
808.05.4 Concrete Finishes. The accepted quantities of "Rubbed Finish" and "Bushhammered or Sand Blasted Concrete Finish" will be paid for at the respective contract unit prices per square foot as listed in the Proposal. The prices so-stated constitute full and complete compensation for all labor, materials, and equipment, and for all incidentals required to finish the work, complete and accepted by the Engineer.
There shall be no separate payment for float finish and concrete deck or wearing surface finish as they are included in the price of the concrete. SECTION 809 PRECAST/PRESTRESSED STRUCTURE CONCRETE MASONRY
809.01 DESCRIPTION. The work of this Section consists of the provision of precast, prestressed,
concrete elements, both pre-tensioned and post-tensioned, at the locations and to the details indicated on the Plans, all in accordance with these Specifications. 809.01.1 General . Prestressed concrete structural elements shall be manufactured in accordance with the publication of the Prestressed Concrete Institute titled Manual for Quality Control for Plants and Production of Precast and Prestressed Concrete Products , MNL 116, current edition. This manual provides principles and guidelines for the manufacture of prestressed concrete products. 809.01.2 Compensation for Out-of-State Inspection Services.
a.Basis of Compensation. In the event that a Contractor selects a subcontracting
Source: Rhode Island Standard Specifications (Bluebook), 2024 Edition. Pages 401–402 of 826.