Engineers Who Get Their Hands Dirty Mission Statement Our mission here at Dirty Suit Construction is to produce high quality work, no matter how small or how large of a project, while offering competitive pricing, great communication, and a safe work environment for all employees. We at Dirty Suit Construction value our quality reputation and strive to please all parties, whether it be project owner, subcontractors, suppliers, or consultants. All parties are treated with high integrity and respect to help insure lifelong relations and business. Greenfield Bridge Replacement Bridge Name: Beachwood Blvd. Bridge Originally constructed in 1921 466’ total length: 274’ main span Traffic conditions: Current A.D.T: 12,800 Design Year A.D.T: 16,100 Designer estimated completion: September 5th, 2017 Designer estimated build cost: $15-$20 million Greenfield Bridge Replacement Owner: City Of Pittsburgh Pennsylvania Department of Transportation BMS No.: 02 7301 0000 3039 Designer: HDR Engineering, INC. 11 Stanwix St, Suite 800 Pittsburgh, Pa 15222 Greenfield Bridge Replacement General Contractor: Dirty Suit Construction 115 Federal St. Pittsburgh Pa, 15213 Meet Our Construction Management Team: Derrick Lubomski (Project Manager) Ryan Shaffer Adrienne Sciarretti Eric Danko Jack Ozaroff Kevin Link Paige Lumley OAKLAND Limits of Work GREENFIELD Community Impact Noise Control Traffic / Detour Air Quality Safety Consideration Access to Schenley Health / Fitness Stimulates local economy Traffic Control Plan East Detour Route I-376 EAST EXIT 72A -> FORBES AVE BATES STREET -> HALKET ST - > FORBES AVE Traffic Control Plan East Detour Route FORBES -> S. BELLEFIELD AVE -> FIFTH AVENUE PENN AVENUE -> ENTRANCE I-376 EAST - WILKINSBURG (PA8 NORTH) INTERCHANGE Traffic Control Plan Closure from Squirrel Hill Interchange Ramp To Edgewood / Swissvale Interchange Murray Ave -> Wilkins Ave -> Penn Ave -> I-376 East Traffic Control Plan West Detour Route EXIT 78B WILKINSBURG (PA8 NORTH) CLOSURE OF EDGEWOOD / SWISSVALE INTERCHANGE PENN AVE -> FIFTH AVE -> FORBES AVE ->BATES STREET -> I - 376W Traffic Control Plan Closure from Squirrel Hill Interchange Ramps To Forbes Ave / Oakland Interchange BEECHWOOD BLVD FOWARD ST-> MURRAY AVE -> FORBES-> BATES STREET -> I - 376W Traffic Control Plan ● Signs : Speed Limit, Road Closed, Work Zone, Detour, End Road Work ● Type B Flashers ● Type III Barricades ● Channelizing Devices (Vertical Panels) ● Road Markers ● Shadow Vehicles ● Concrete Barriers (PennDOT) Quality Management Plan ● Document Change Control ○ version #, date of issue, author(s), description of change ● Quality Policy ● Quality Objectives ● Management Organization ● Quality & Document Control ● Construction Inspection Communication Plan ● Communication is essential for a project to be successful. There are multiple positions involved including subs, architects, engineers and owner(s). ● Meetings (weekly) -project goal priorities will change frequently ● Proper logs, change orders and other documentation such as electronic & hard memorandums / reports determine how smoothly a project can run ● Use methods such as P6, email, & phone calls ● Not only does the internal circle of the project need to be in healthy communication with each other, but also the outsiders involved (stakeholders) ● Different groups of people will be impacted by the project; it is important to keep them updated so that their everyday lives will not be negatively affected ○ Noise & traffic are typically the main issues Communication Plan Public Information ● Information Card handed out at public meetings (Oakland Transportation Management Assoc.) ● Project Description ● Bridge Construction Dates -total duration of ~24 mo. ○ month #1: bridge closes to public & contractor begins physical work ○ month #3: bridge implosion (including part time closure of I-376 Parkway East) ○ month #4 & on: construction of bridge ● Pedestrian traffic restricted from bridge - pedestrian/bicycle detour route implemented ● General traffic detoured around bridge with the aid of a posted detour * project updates, detailed traffic detours and Q&A can be found on the up-to-date website* Project Partners Foundations Overview: Foundations ● South Side Open Cut Excavation ● OSHA Standard 1926 Subpart P ○ Soil Type C: 1.5:1 max allowable slope ● Based on Design Drawings ○ 1.95:1 slope Foundations • Lengths developed using provided core borings • Micropile Assembly: • #28 All-Thread Reinforcement • Steel Casing • Steel Plate • Hex Nut & Washer • Assumed production rate from Amelie Construction: 3-4 per day Location Total Average Average Verification Production Length Length Micropiles Quantity (Battered) (Vertical) (ft.) (ft.) Abutment 1 46 59 55 2 South Thrust 60 66 72 1 Blocks North Thrust 60 37 47 1 Blocks Foundations Drill Rig: Comacchio MC-22 High-Tech Line Encountered issues with drilling Bench EL. Bench EL. 1 882.36 1 882.36 2 877.44 2 877.44 3 872.51 3 872.51 4 867.59 4 867.59 5 862.66 5 862.66 6 857.74 6 857.74 Foundations Control of Heat of Hydration Element with least dimension greater than or equal to 6 ft ◦ South Thrust Block Footers ◦ North Thrust Block Footers ◦ South Thrust Blocks ◦ North Thrust Blocks Reduce cracking due to high temperature and uneven concrete cooling Thrust Block Footer Formwork Foundations Responsible for stability of all excavated slopes and embankments South end: Greenfield side ◦ Open cut excavation North end: Schenley side ◦ Earth-retaining structure Foundations ● Pittsburgh Redbeds ○ Clay minerals organized randomly ○ Water becomes trapped ■ Causes excessive pore pressure ○ Introducing additional water causes claystones to push themselves apart Foundations Temporary Retaining Wall Load ● Type of retaining structure: Transfer Soil Nail Wall ○ Quick construction ○ Logical selection ■ Same drill as micropiles Soil Nail Foundations SNW Wall Location North Thrust Block Foundation Abutment 2 Foundation Soil Nail Wall Foundations Preliminary Design ● Wall Length: 70 feet ● Wall Height: 15 feet ● Nail Length: 12 feet ● Nail Inclination: 15 degrees ● Nail Size: No. 10 Bar ● Nail Spacing: 5 feet ○ Horizontal & Vertical Directions ● 6 Inch Shotcrete Facing ● Vertical Wall Foundations Final Design ● Alterations to initial design: ○ Wall Height: 20 feet ○ Nail Length: 20 feet ○ Nail Inclination: 20 degrees ○ 8 Inch Shotcrete Facing ○ Wall Batter: 10 degrees *Wall modeled in FHWA SNAP-2 Software Foundations SNW Wall Construction ● Construction Sequence ○ Excavate Lift ○ Drill Hole ○ Install Nail ○ Place Facing Substructure Overview: Piers & Abutments Abutments & Piers Abutments ◦ Total Concrete: 393 CY ◦ 4 Pours ◦ Bush Hammer & Rect. Cut Stone Finish Piers ◦ Total Concrete: 242 CY ◦ 3 Pours ◦ Bush Hammer Architectural Finish Abutment Wingwalls B C A D Abutment Wingwalls Mechanically Stabilized Earth Walls ● MSE Wall Components ○ Leveling pad ○ Straps ○ Precast Concrete Panels ○ Backfill ● Construction Sequence ○ Pour leveling pad ○ Erect 1st Row of Panels ○ Place Backfill ○ Place Layer of Geotextile Fabric ○ Install Reinforcement Straps Steel Erection Overview: Preliminary Steel Erection: Alternative 1 Preliminary Steel Erection: Alternative 1 Too Large of Moment Final Erection Sequence: 1) 2) 3) 4) Final Erection Sequence: 5) 6) 7) 8) Final Erection Sequence: 9) 10) 11) 12) Final Erection Sequence: 13) 14) 15) 16) Final Erection Sequence: 17) 18) Falsework Design: South Tower North Tower Wind Load Elevation Profile: Structure Analysis of Sequence: Load Cases Examined: 1) 1.4DL 2) 1.25DL + 1WL (T) + .5WL (L) Governing Load Case 3) 1.25DL + .5WL (T) + 1WL (L) 4) 1.25DL + .7WL (T) + .7WL (L) Structure Analysis of Sequence: Structure Analysis of Sequence: Structure Analysis of Sequence: Structure Analysis of Sequence: Structure Analysis of Sequence: Steel Erection- Crane Layout Show crane layouts/logistics-Derrick/Ry Site Logistics Material Laydown~ 13,713 SF Unloading/ Loading~ 4,007 SF Loose Material Stockpile~ 3,522 SF Deck Overview: Deck 53’ - 9 ¾” Width (Out-To-Out) 10’ width Sidewalk 16” thick Sidewalk Deck 8” thick 1” clearance from bottom for rebar 2.5” clearance from top for rebar TYPICAL SECTION Deck Pour Specs CONCRETE WATER CURING SPECS AAAP: Deck Slab, Concrete End Diaphragms AAAP: 14 days AA: Sidewalk, Abutment / Back walls, Abutment AA: 7 days Integral drain through, Approach Slabs, Moment Slabs, Sleeper Slabs High Early Strength: Fillers (Dowel Bars) High Early Strength: 3 days Immediately after water curing is done & A reduction in shrinkage potential that would help reduce cracking after surface film of water has Improvement in workability and easier to finish allowing contractors disappeared, apply curing compound to to provide a finish that would be more durable and long lasting bridge approach slabs. Deck Setup Total Duration: 25 days Deck MAIN DECK POUR SEQUENCE 1 & 2 Pour End Diaphragms at Abutments below construction joints 3 & 4 Pour Approaches 5 Pour main portion over arch, placement must remain plastic 6 & 7 Pour Block Outs over Abutments Concrete: PennDOT AAAP Quantity: 785 CY Greenfield Side Schenley Side SUBCONTRACTORS / PLANTS Essroc Ready Mix – for concrete / trucks 2220 2nd Avenue Pittsburgh, PA 15219-3107 412.431.6001 MAIN DECK POUR CREW Howard Pumping – used for pumps and equipment ● 1. Bidwell Operator 701 Millers Run Road Cuddy, PA 15031 ● 1. Pump operator 412.257.1800 ● 1 laborer with hose DOT Diamond Core Drilling - Bridge Deck Grooving ● 1. Supervisor / Foreman 780 Sugar Lane ● 2 laborers with vibrators Elyria, Ohio 44035 ● 4 Laborers with lutes Peter