DDA RFP: Windsor Alley Final Boards (PDF)
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Downtown Windsor Alley Enhancement Project Schematic Design Windsor, CO November 2019 Table of Contents • Existing Conditions • Existing Utilities • Circulation and Parking Diagram • Waste Disposal Diagram • Lessons Learned • Opportunities and Constraints • Shadow Study • Ingredients for a Successful Alley • Context Plan • Overall Site Plan - Preferred Concept • Perspective Sketches • Elevations • Cost Estimate BOARDWALK PARK RAILROAD 113 LIMIT OF WORK 5TH STREET 430 428 426 424 422 420 414 408 406 404 400 MAIN STREET 0 20 40 80’ 2019.11.26 Town of Windsor - DDA Alley Existing Conditions 10 9 8 13 7 11 6 5TH STREET 5 4 3 12 14 2 1 MAIN STREET 1 Existing utilities at entrance 2 Looking west from existing parking area 3 Existing back-of-house condition 4 Existing back-of-house condition 5 Existing overhead utilities 6 Existing overhead utilities 7 Looking west - mid block of alley 8 Looking east - mid block of alley 9 Along railroad ROW 10 Dumpsters in gravel area 11 Existing back-of-house condition 12 Mid block opening 13 Drainage path through existing parking 14 East entrance - looking east area 2019.11.26 Town of Windsor - DDA Alley Existing Conditions LEGEND Underground Electric BOARDWALK PARK Overhead Electric Sewer Fiber Optic Water Storm Drainage Existing Fire Hydrant RAILROAD ELECTRIC WATER OVERHEAD ELECTRIC 5TH STREET SEWER STORM FIBER MAIN STREET 0 20 40 80’ 2019.11.26 Town of Windsor - DDA Alley Existing Utilities BOARDWALK PARK NO CROSSING RAILROAD RIGHT-OF-WAY Full movement intersection NO CROSSING TWO-WAY TRAFFIC WITHIN ALLEY Business parking off of alley 5TH STREET Existing sidewalk along Main St Full movement intersection MAIN STREET 0 20 40 80’ 2019.11.26 Town of Windsor - DDA Alley Circulation and Parking Diagram LEGEND 95 gallon 4 yard dumpster BOARDWALK PARK 6 yard dumpster Grease container EXISTING TRASH INVENTORY Container Size # of containers 95 gallon 4 4 yard 5 4 yard (recycling) 1 6 yard 2 Grease 1 5TH STREET MAIN STREET 0 20 40 80’ 2019.11.26 Town of Windsor - DDA Alley Waste Disposal Diagram PREVIOUS DESIGN CHALLENGES - LESSONS LEARNED IMPROVING PREVIOUS DESIGN EFFORTS - No permeable paving, bioswales or other L.I.D. types - Drainage improvements to existing systems only, limit new storm pipe - Planting along historic building foundations challenging - Substantial turning radii where possible - 2% max cross slope except where existing conditions prohibit - Bollard and raised curb protection for planting and site elements - Some drainage required across drive approaches/sidewalks - Vertical planters where appropriate - Planter anchors to prevent movement are ideal - Bollards with higher vehicle impact rating, deliberate - No flush curbs/headers aesthetics - No pavement cross sections greater than 2’ in depth - Small seating areas, individual configurations - One way alley ROW enforcement challenging - Pavers w/higher compressive strength - No flat, long benches or seating - Trees either pruned or alternative columnar species - Trash enclosures require opening gates into ROW - Trash enclosure gate materials/construction - No paving mounted lights - LED pedestrian luminaires, use sconces where appropriate - No trash compactors in enclosures - Enlarged concrete header where appropriate to minimize paver cuts/ foundation impacts 2019.11.26 Town of Windsor - DDA Alley Lessons Learned BOARDWALK PARK NO CROSSING AT RAILROAD RAILROAD RIGHT-OF-WAY Create strong gateway into alley - visual cue from street Adjacent DDA Lot Fence along area to block vehicles PLANTED EDGE WITH ALLEY AMENITIES Improve alley pavement Enhance edge along alley Create strong visual connection/cue Improve alley drainage Existing sidewalk along 5th St Provide enhancements from Main Street into alley Analyze and plan for semi-truck movements in and out of east end 5TH STREET of alley Create strong gateway into alley - visual cue from street Existing sidewalk along Main St Improve site distance views to on coming traffic MAIN STREET 0 20 40 80’ 2019.11.26 Town of Windsor - DDA Alley Opportunities and Constraints Diagram 5TH STREET MAIN STREET FALL EQUINOX - SEPT 23 WINTER SOLSTICE - DEC 21 SPRING EQUINOX - MAR 19 SUMMER SOLSTICE - JUN 20 2019.11.26 Town of Windsor - DDA Alley Shadow Study VEHICLE RATED SECURITY BOLLARD CALPIPE BOLLARD TRASH ENCLOSURE SIDE PANELS TRASH ENCLOSURE GATE DESIGN SEMI-TRANSPARENT SIMPLE LED FIXTURE TIVOLI LIGHTING PLANTER POTS PLANTER POTS COLUMNAR TREES PAVER BLEND WITH BLOCK OF HERRINGBONE PAVER PATTERN COLOR TIVOLI LIGHTING HOLOPHANE SITELINK POLE 2019.11.26 Town of Windsor - DDA Alley Ingredients for a Successful Alley Birch St Windsor Lake Boardwalk Park Museum Windsor Town Public Works Lot Boardwalk Park Ash Street Windsor DDA Parking Railroad Lot Study DDA Lot Windsor Alley Project Area 6th Street 5th Street Weld CR 17 Weld Main Street Main Street 4th Street The Mill 2019.11.26 Town of Windsor - DDA Alley Context Plan 1 Unique radial paver pattern Enhanced alley entrance Announce entry and create clear All herringbone paver pattern with view corridor onto street blocks of color 1 1 Trash enclosure, typ. - Includes (3)-3 yard dumpsters One gate opening with separate pedestrian entrance 3 Shadow panel - back lit with LED lighting at night Columnar tree, typ. 2 12-15’ high pedestrian light pole Tivoli lighting, typ. with hanging planter baskets 3 LED SPOT LIGHTS Seating area - benches and planter pots 3 B’ 2 3 A A’ B 2 4 Enhanced entry into/out of alley Announce entry and create clear view corridor onto street 4 Enhanced ‘pedestrian only’ alley connection Includes informal bench seating or tables/ chairs 0 20 40 80’ 2019.11.26 Town of Windsor - DDA Alley Overall Site Plan - Preferred Concept 12’-15’ high pedestrian light pole Informal bench Precast concrete Tivoli lighting, min. 14” with hanging planter baskets seating pavers with decorative high radial layout Adjacent property Buffer planting Columnar trees for Shadow panel Buffer planting screening structure - back lit with with ornamental LED lighting at night trees 2019.11.26 Town of Windsor - DDA Alley Perspective Sketch Adjacent property Green screen Shadow panel structure - 12’-15’ high pedestrian Adajcent DDA lot, not in with outdoor patio back lit with LED lighting light pole with hanging project at night, vine plantings planter baskets Buffer planting Precast concrete Precast concrete Tivoli lighting, min. Informal seating pavers in “radial pavers to form 14’ high area with benches pattern” drain pan and planters 2019.11.26 Town of Windsor - DDA Alley Perspective Sketch Existing alley extents Existing alley extents Adjacent building Existing adjacent Planting area Alley with pavers, Existing adjacent Adjacent building 414 Main St. property with street movable tables and property (alley behind), 408 Main St. light chairs, tivoli lighting screened by green wall/ at 14’ ht min. fence 0 2 4 8’ 2019.11.26 Town of Windsor - DDA Alley Elevation A-A’ Existing alley extents Existing alley extents Adjacent building Existing adjacent Planting area Alley drive with pavers, Seating area Planting area Adjacent property 408 Main St. property (alley behind), with street tivoli lighting at 14’ ht with benches, with 6” curb screened by green wall/ light, 6” curb min., overhead shade planters edge fence edge structure feature with artistic down lighting 0 2 4 8’ 2019.11.26 Town of Windsor - DDA Alley Elevation B-B’ Windsor DDA Alley Enhancement Project Estimate of Probable Costs Plan Date: November 2019 Prepared by: Russell + Mills Studios EXTENDED ITEM UNIT UNIT COST QTY NOTES COST CONSTRUCTION General Conditions LS 1 $72,279.00 5% of subtotal Traffic Control ALLOW $10,000.00 1 $10,000.00 Renting Parking Spots for Staging/ Employee Parking ALLOW $5,000.00 1 $5,000.00 Erosion Control ALLOW $3,000.00 1 $3,000.00 Construction Surveying ALLOW $12,000.00 1 $12,000.00 CATEGORY TOTAL CATEGORY SUBTOTAL $102,279.00 DEMOLITION Remove Existing Concrete and Asphalt S.F. $2.00 27,000 $54,000.00 Remove Curb and Gutter L.F. $10.00 236 $2,360.00 Saw Cutting Pavement for Removal L.F. $3.56 1,785 $6,354.60 Remove Existing Tree EA. $1,000.00 1 $1,000.00 Protection of Existing Facilities/Structures LS $3,000.00 1 $3,000.00 Excavation and Haul Material C.Y. $125.30 350 $43,855.00 CATEGORY SUBTOTAL $110,569.60 UTILITIES Connect Irrigation to Water Main LS $7,500.00 1 $7,500.00 Temporary Storm Drainage During Construction L.S. $1,500.00 1 $1,500.00 CATEGORY SUBTOTAL $9,000.00 SITE LIGHTING AND ELECTRICAL Electrical Distribution ALLOW $15,000.00 1 $15,000.00 Pedestrian Light EA. $7,200.00 20 $144,000.00 Pedestrain Light Footing EA. $1,750.00 20 $35,000.00 Tivoli Lights L.F. $53.00 1255 $66,505.46 Tivoli Poles EA. $5,200.00 1 $5,200.00 Light Attachment EA. $450.00 9 $4,050.00 Lighting Control Center LS $12,500.00 1 $12,500.00 Electrical Conduit ALLOW $30,000.00 1 $30,000.00 CATEGORY SUBTOTAL $312,255.46 SITE WORK Recondition Subbase to 95% SY $4.50 2,500 $11,250.00 6" Concrete Curb L.F. $20.00 431 $8,614.00 12" Concrete Header L.F. $23.00 1,903 $43,768.08 Curb and Gutter L.F. $22.00 272 $5,978.06 Concrete Flatwork S.F. $9.25 583 $5,389.05 Concrete Pavement Below Pavers S.F. $6.75 19,659 $132,700.58 8" #4 Smooth Dowels EA $7.50 950 $7,125.00 Unit Pavers on Concrete Base S.F. $21.00 19,659 $412,846.26 Signage ALLOW $3,000.00 1 $3,000.00 Kiosk in connector alley CATEGORY SUBTOTAL $630,671.03 FURNISHINGS AND ARCHITECTURE Hanging Basket - Pedestrian Light EA. $800.00 40 $32,000.00 Planter Pots EA. $1,300.00 7 $9,100.00 Trash Receptacle EA.