Structural Concrete Structures - UMass Amherst

1 1 Structural Concrete StructuresReinforced Concrete Construction2 reinforced Concrete Construction Formwork Flat surfaces (element bottom: slabs, beams) Vertical Surfaces (element sides: walls, beams, columns) Reinforcing bar cage fabrication Placing bars and tying Concrete fabrication and placing Bucket placing PumpingWall Formwork3 Slab FormworkSlab Formwork4 Footing Reinforcing CageFinished Wall Footing5 Slab ReinforcementConcrete Truck and Pump6 Concrete Pump7 Wall ConstructionConcrete Pumping89 Concrete Building:San Francisco, CA10 Concrete Building:Phoenix, AZPost-tensioned slabsReinforced Concrete shear walls111213 BridgesRigid Frames Overpass14 Slab and Beam BridgeBridge Frames Supporting Precast Concreteand Steel Beams15 Flat Slab-Column BridgeBox Girder Bridge16 Post-Tensioned Segmental bridge (I-70, Colorado)Interior of Box Girder17 Cantilever bridge Variable Cross-SectionArch Bridges: Natchez Trace Parkway18 Salginatobel, AustriaSalginatobel Bridge19 Selah Creek, Yakima, WashingtonTwin fixed Concrete arch highway arch ribs designed to resist axial force and and deck not designed to resist longitudinal bending (very flexible).

2 Gotteron bridge , Fribourg, SwitzerlandTwin fixed Concrete arches (supported on rock).Bending stiffness of arch and deck are comparable indicating deck is relied upon for longitudinal flexural Arch, AustriaAlex Fraser bridge Cable-Stay Construction21 Alex Fraser BridgeLocation: Annacis, British Columbia, Canada (Fraser River)Construction duration: 1983-1986 Main span: steel deck/ reinforced Concrete slab; 465 m (1540 ft); Total Length 930 mPylons: reinforced Concrete , height mVolumes: Concrete : 80,000 m3; reinforcing steel: 11,600T; prestressing steel 800 TNormandy BridgeLocation: Siene River (Le Havre, France)Construction duration: 1988-1994 (Opened Jan. 20, 1995); $465 MApproaches: prestressed concreteMain Span: steel and prestressed Concrete ; 856 m (2810 ft); Total Length 2141 mPylons: reinforced Concrete , height 215 mVolumes: Concrete : 80,000 m3; reinforcing steel: 11,600T; prestressing steel 800 T22 RoofsFolded Plate, Las Vegas23 Barrel Shells, Oakland AirportCantilever Shell24 Hyperbolic-Paraboloid (Hypar) Roof, BerkeleyThin Shell Dome25Y-Shaped Precast Roof BeamsVariable Section Precast Members26 Double-Tee PrecastRoof BeamsBuildings27 Interaction Between Frames and WallsMarina Towers, Chicago28 Marina CityChicago, ILYear built: 1964 Structural system: reinforced concreteConcrete shear wall coreNo.

3 Stories: 60 (bottom 18 parking)Year built: 1990 Structural system: reinforced concreteNo. stories: 65 Height: 292 m (960 ft)311 South Wacker , IL29 Deep Beam (Transfer Girder), ChicagoPetronas TowersKuala Lumpur, MalaysiaYear built: 1998 Structural system: Steel, reinforced concreteThe world's tallest building (tip of spire) 452 m (1483 ft) ft30 Trump International Hotel & TowerChicago, ILCompletion: 2008 Structural system: Steel, reinforced concrete92 stories 415 m (1362 ft)31 Other StructuresCN TowerToronto, CanadaYear built: 1976 Structural system: reinforced concreteThe world's tallest freestanding structure at time of construction32 Hoover DamBlack Canyon, NevadaYear built: 1931-1936 Structural system: Concrete arch-gravity damLength: and 1,244 ft (379 m)Height: 726 ft (221 m) Concrete volume: M cu ydConcrete Structures at UMass33 Campus CenterGraduate Research Center34 Agricultural EngineeringTobin Hall35 Tobin Hall - Bartlett36 Fine Arts Center3738 Herter HallBalconies in Herter Hall