The sidewalk assembly consists of a minimum four-inch thick fiber-reinforced concrete slab over a four-inch minimum aggregate base course on prepared subgrade. Control joints are spaced at a maximum of eight feet on center in both directions, with expansion joints aligned to curb and gutter locations at a maximum spacing of thirty-two feet. The catch basin assembly utilizes an Oldcastle thirty-inch precast structure with grade rings as required to meet finished grade. A 24-inch D&L model A-1055 frame and cover marked 'STORM' sits atop the basin, which features a four-inch cast-in-place concrete floor sloped at two percent toward the outlet pipe. All pipe penetrations are sealed with grout, and the structure is bedded on four inches of compacted gravel.
Text on the drawing
8'-0" MAXIMUM PANEL LENGTH BETWEEN CONTROL JOINTS 8'-0" MAXIMUM PANEL WIDTH BETWEEN CONTROL JOINTS 2% MAXIMUM CROSS-SLOPE 5.0% MAXIMUM IN PREDOMINANT DIRECTION OF PEDESTRIAN TRAVEL (ALONG THE LENGTH OF ADJACENT STREET) EXPANSION JOINT SEE NOTE 3 THICKNESS (4" MINIMUM, 6" MINIMUM WHERE DRIVEWAYS/CURB CUTS ALLOW VEHICULAR TRAFFIC OVER SIDEWALK OR ADJACENT TO STREET TREE GRATE) WEAKENED PLAN SAW CUT CONTRACTION JOINT; TYPICAL GENERAL NOTES: 1. SIDEWALK SHALL CONFORM TO ALL APPLICABLE ADA STANDARD REQUIREMENTS. 2. SIDEWALKS SHALL CONFORM TO WPWSS SECTION 02776, EXCEPT THAT PORTLAND CEMENT CONCRETE SHALL BE FIBERMESH-REINFORCED CLASS 4000 CONCRETE CONFORMING WITH WPWSS SECTION 03304, PART 2.07. FIBERMESH MAY BE SUBSTITUTED WITH WWF UPON REVIEW/APPROVAL. 3. EXPANSION JOINTS SHALL BE PLACED IN SIDEWALK AT THE SAME LOCATIONS AS THOSE IN CURB AND GUTTER WHEN SIDEWALK IS ADJACENT TO CURB. (PER WPWSS SECTION 03251, PART 3.04 SPACING SHALL NOT EXCEED 32'-0" ON CENTER.) 4. FOR SIDEWALKS GREATER THAN EIGHT FEET IN WIDTH, A LONGITUDINAL CONTROL JOINT SHALL BE INSTALLED AT THE CENTER OF THE WALK. 5. REMOVAL AND REPLACEMENT OF SIDEWALK SHALL TAKE PLACE IN FULL PANELS. 6. AGGREGATE BASE COURSE SHALL BE FOUR INCH MINIMUM THICKNESS, CONFORM TO WPWSS SECTION 02190, PART 2.03 GRADING H, AND BE INSTALLED PER WPWSS SECTION 02231, PART 3.03. 7. CLEAR VEGETATION AND STRIP TOPSOIL TO SUBGRADE. SCARIFY, CONDITION, AND COMPACT. PROOF ROLL IN THE PRESENCE OF THE ENGINEER. 8. MATERIAL STRIPPED TO DEPTH LOWER THAN SUBGRADE SHALL BE REPLACED WITH STRUCTURAL MATERIAL TO SUBGRADE ELEVATION. 9. WHERE UNSUITABLE SUBGRADE SOIL EXISTS, OVER EXCAVATION AND REPLACEMENT WILL BE REQUIRED. GEOGRID MAY BE SUBSTITUTED FOR OVER EXCAVATION UPON APPROVAL FROM GEOTECHNICAL ENGINEER. NOT TO SCALE CONCRETE SIDEWALK DETAIL SIDEWALK SECTION 4" CRUSHED GRAVEL CONCRETE PAVEMENT PREPARED SUBGRADE (SEE NOTE 7) C401 8
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