New Meadowlands Stadium
New Meadowlands Stadium East Rutherford, New Jersey
Presented by:
Armindo Monteiro, P.E. Senior Associate October 29, 2008
New Meadowlands Stadium § Project Description § Foundations § Superstructure § Special Features
New Meadowlands Stadium § Project Description § Foundations § Superstructure § Special Features
New Meadowlands Stadium Design and Construction team § Owner : Giants/Jets § Architect: 360 Architecture/EwingCole § DesignBuild CM: Skanska USA § Structural Engineer: Thornton Tomasetti § MEP Engineer: Ewing Cole
New Meadowlands Stadium Away with the Old, in with the new Old New Start 1972 2007 Opened 1976 2010 Owner NJSEA Giants/Jets Cost $78 M $1.3 B Capacity: 80,242 82,500 NFL Rank (cap.) 2 nd 2 nd Suites 119 217 Club seats 142 7200 Bldg footprint 450,000 700,000 SF Steel Tons 13,500 25,000
New Meadowlands Stadium § 2.1 Mill sq.ft. on Eight Levels § Host NFL & college football, Intern’l soccer, concerts § Four 40’x130’ LED scoreboards § Louvered façade, illuminated by colors of team playing
New Meadowlands Stadium Site Location § ~6 Mi from NYC § Meadowlands Complex § Bounded by I95 and Route 3 § Overall project impacts 270 acres § Land Leased from NJSEA
New Meadowlands Stadium
New Meadowlands Stadium Milestones § Decision Jets/Giants – Sept. 2005 § GMP awarded/Turned DB – Dec. 2005 § Foundation start – May 23, 2007 § Steel erection began – Oct. 5, 2007 § Expected topping out –Nov. 2008 (Currently 4+ months ahead of schedule)
New Meadowlands Stadium Fast Track § Multiple early bid packages § 4 Mill orders § Fabricator on board in design assist phase § Struct. Steel SIM created using Tekla
New Meadowlands Stadium Steel Quantity Estimate § Estimate = 23,769 Tons § Final = ~25,000 Tons (including all changes & misc. framing) § 18,800 tons designed, detailed, submitted, and fabricated in approx. 17 months (up to May ’08) § ~14,000 Tons erected in 7 months (up to May ’08)
New Meadowlands Stadium § Project Description § Foundations § Superstructure § Special Features
New Meadowlands Stadium Driven Piles at Pilecaps § Concrete filled, closed end piles, dia = 13 3/8” § 150 Ton allowable axial capacity § 10 Ton allowable uplift capacity § 3 Ton allowable lateral capacity
New Meadowlands Stadium Pilecaps § Top of pilecap typically 3 feet below top of slab § Dowels provided to transfer lateral load into slab § 2 to 24 Pile Pilecaps Used
New Meadowlands Stadium Tie Down Anchors § Required when uplift load exceeds uplift capacity of driven piles § 175 kip uplift resistance § $$$ at ~$150/LF
New Meadowlands Stadium
App
’ 5 2 . r ox
Pile Supported Framed Slab on Grade § 2’0” thick individual pile caps/haunch slab § 150 ton and 75 ton slab support piles § 12 inch thick normal weight concrete slab
~ 12’ o.c.
Typ. Service Level Slab Part Plan Field Slab Part Plan
§ 10 inch thick normal weight field slab § Continuous mat reinforcement
New Meadowlands Stadium Pile Supported Framed Slab on Grade
New Meadowlands Stadium § Project Description § Foundations § Superstructure § Special Features
New Meadowlands Stadium Structural System Summary § All steel super structure § Code: IBC 2000, New Jersey Edition § GRAVITY SYSTEM § 4 ½” N.W. topping on 3” Composite M.D. § Typical span = 9’ to 10’ § LATERAL SYSTEM § Concentrically Braced frames both directions
New Meadowlands Stadium Lateral System § Frames located symm. § Diaphragm designed to span between frames § #4@12” mat each way § 8#7 add’l chord reinforcement along perimeter of slab
Longitudinal Braced Frames
Radial Braced Frames, Typ.
Radial Braced Frames
Ÿ Longitudinal
Braced Frames
New Meadowlands Stadium Typ. Sideline Bent Elevation Precast Seating Units
Upper Bowl
Suite Level C Suite Level B Mid Bowl
Braced Frame Suite Level A Lower Bowl
New Meadowlands Stadium Typ. Endzone Bent Elevation Upper Bowl
Mid Bowl Precast Seating Units
Braced Frame Lower Bowl
New Meadowlands Stadium Structural SystemSummary §
STADIUM LATERAL LOAD SYSTEM §
WIND LOADS – Exposure C – V=100 mph – I=1.15
§
SEISMIC LOADS – Seismic Design Category C – R=3 (no special seismic detailing) – I=1.25
§
Seismic loads predominantly control design
New Meadowlands Stadium
S DS > 0.5 S D1
} CAT. D > 0.2
Seismic § Code transition period from IBC2000 to IBC2006 in NJ § Design for worst case § IBC2006 reduced forces but still Cat. D, borderline § TT suggested site specific study in hopes of achieving Cat. C
New Meadowlands Stadium § Site Specific confirmed CAT. C Benefits of “C” vs. “D” § R=3 permitted no special detailing provisions § No special seismic requirements for MEP/ Arch systems § $$$
New Meadowlands Stadium
IBC 2000 § Sds:0.555g § Sd 1 :0.22g § SDC “D” § R>3
SITE SPECIFIC § Sds:0.48g § Sd 1 :0.175g § SDC “C” § R=3
SITE SPECIFIC VS. IBC § Max. 20% reduction in Design Response coefficients for site specific per IBC § Still significant uplift in columns at the foundation level § Uplift anchor cost approx $150/LF, with depths ranging 4590 ft. ($6,750$13,500 ea)
New Meadowlands Stadium What can be done to reduce uplift? § Dynamic analysis § force distrib based on location of mass F=m*a § Vb based on T = 1.2 *Ta*Cu…15.4% reduction § LLRS ‘R’ Factor reduced forces for increased system ductility
New Meadowlands Stadium Dynamic Analysis vs Site Specific and IBC (R=3) § Significant base shear reductions § Significant overturning moment reductions § Reduced uplift anchors proportionately
New Meadowlands Stadium
Seismic ‘R’ Value § Force inversely proportional to R value § Cs= S D1 *I/(T*R), & min Cs = 0.044 I*S DS § For R=3 and R=6, not 2:1 force ratio: min Cs = 0.044 I*S DS
New Meadowlands Stadium
Seismic ‘R’ Value § Structure of ~1.4 to 1.9 sec (Cs min controls for higher R) § Impacts Level of detailing of connx & member size criteria
New Meadowlands Stadium Ÿ R=3 CONNX
Ÿ R=6 CONNX
R6 Benefits § Main member tonnage reduction 350 Tons § No uplift anchors (100+ anchors) R6 Penalties § Full tension capacity conn. (Ry*Ag*Fy)…$$ § Brace beam L b Tonnage, but
Presented by:
Armindo Monteiro, P.E. Senior Associate October 29, 2008
New Meadowlands Stadium § Project Description § Foundations § Superstructure § Special Features
New Meadowlands Stadium § Project Description § Foundations § Superstructure § Special Features
New Meadowlands Stadium Design and Construction team § Owner : Giants/Jets § Architect: 360 Architecture/EwingCole § DesignBuild CM: Skanska USA § Structural Engineer: Thornton Tomasetti § MEP Engineer: Ewing Cole
New Meadowlands Stadium Away with the Old, in with the new Old New Start 1972 2007 Opened 1976 2010 Owner NJSEA Giants/Jets Cost $78 M $1.3 B Capacity: 80,242 82,500 NFL Rank (cap.) 2 nd 2 nd Suites 119 217 Club seats 142 7200 Bldg footprint 450,000 700,000 SF Steel Tons 13,500 25,000
New Meadowlands Stadium § 2.1 Mill sq.ft. on Eight Levels § Host NFL & college football, Intern’l soccer, concerts § Four 40’x130’ LED scoreboards § Louvered façade, illuminated by colors of team playing
New Meadowlands Stadium Site Location § ~6 Mi from NYC § Meadowlands Complex § Bounded by I95 and Route 3 § Overall project impacts 270 acres § Land Leased from NJSEA
New Meadowlands Stadium
New Meadowlands Stadium Milestones § Decision Jets/Giants – Sept. 2005 § GMP awarded/Turned DB – Dec. 2005 § Foundation start – May 23, 2007 § Steel erection began – Oct. 5, 2007 § Expected topping out –Nov. 2008 (Currently 4+ months ahead of schedule)
New Meadowlands Stadium Fast Track § Multiple early bid packages § 4 Mill orders § Fabricator on board in design assist phase § Struct. Steel SIM created using Tekla
New Meadowlands Stadium Steel Quantity Estimate § Estimate = 23,769 Tons § Final = ~25,000 Tons (including all changes & misc. framing) § 18,800 tons designed, detailed, submitted, and fabricated in approx. 17 months (up to May ’08) § ~14,000 Tons erected in 7 months (up to May ’08)
New Meadowlands Stadium § Project Description § Foundations § Superstructure § Special Features
New Meadowlands Stadium Driven Piles at Pilecaps § Concrete filled, closed end piles, dia = 13 3/8” § 150 Ton allowable axial capacity § 10 Ton allowable uplift capacity § 3 Ton allowable lateral capacity
New Meadowlands Stadium Pilecaps § Top of pilecap typically 3 feet below top of slab § Dowels provided to transfer lateral load into slab § 2 to 24 Pile Pilecaps Used
New Meadowlands Stadium Tie Down Anchors § Required when uplift load exceeds uplift capacity of driven piles § 175 kip uplift resistance § $$$ at ~$150/LF
New Meadowlands Stadium
App
’ 5 2 . r ox
Pile Supported Framed Slab on Grade § 2’0” thick individual pile caps/haunch slab § 150 ton and 75 ton slab support piles § 12 inch thick normal weight concrete slab
~ 12’ o.c.
Typ. Service Level Slab Part Plan Field Slab Part Plan
§ 10 inch thick normal weight field slab § Continuous mat reinforcement
New Meadowlands Stadium Pile Supported Framed Slab on Grade
New Meadowlands Stadium § Project Description § Foundations § Superstructure § Special Features
New Meadowlands Stadium Structural System Summary § All steel super structure § Code: IBC 2000, New Jersey Edition § GRAVITY SYSTEM § 4 ½” N.W. topping on 3” Composite M.D. § Typical span = 9’ to 10’ § LATERAL SYSTEM § Concentrically Braced frames both directions
New Meadowlands Stadium Lateral System § Frames located symm. § Diaphragm designed to span between frames § #4@12” mat each way § 8#7 add’l chord reinforcement along perimeter of slab
Longitudinal Braced Frames
Radial Braced Frames, Typ.
Radial Braced Frames
Ÿ Longitudinal
Braced Frames
New Meadowlands Stadium Typ. Sideline Bent Elevation Precast Seating Units
Upper Bowl
Suite Level C Suite Level B Mid Bowl
Braced Frame Suite Level A Lower Bowl
New Meadowlands Stadium Typ. Endzone Bent Elevation Upper Bowl
Mid Bowl Precast Seating Units
Braced Frame Lower Bowl
New Meadowlands Stadium Structural SystemSummary §
STADIUM LATERAL LOAD SYSTEM §
WIND LOADS – Exposure C – V=100 mph – I=1.15
§
SEISMIC LOADS – Seismic Design Category C – R=3 (no special seismic detailing) – I=1.25
§
Seismic loads predominantly control design
New Meadowlands Stadium
S DS > 0.5 S D1
} CAT. D > 0.2
Seismic § Code transition period from IBC2000 to IBC2006 in NJ § Design for worst case § IBC2006 reduced forces but still Cat. D, borderline § TT suggested site specific study in hopes of achieving Cat. C
New Meadowlands Stadium § Site Specific confirmed CAT. C Benefits of “C” vs. “D” § R=3 permitted no special detailing provisions § No special seismic requirements for MEP/ Arch systems § $$$
New Meadowlands Stadium
IBC 2000 § Sds:0.555g § Sd 1 :0.22g § SDC “D” § R>3
SITE SPECIFIC § Sds:0.48g § Sd 1 :0.175g § SDC “C” § R=3
SITE SPECIFIC VS. IBC § Max. 20% reduction in Design Response coefficients for site specific per IBC § Still significant uplift in columns at the foundation level § Uplift anchor cost approx $150/LF, with depths ranging 4590 ft. ($6,750$13,500 ea)
New Meadowlands Stadium What can be done to reduce uplift? § Dynamic analysis § force distrib based on location of mass F=m*a § Vb based on T = 1.2 *Ta*Cu…15.4% reduction § LLRS ‘R’ Factor reduced forces for increased system ductility
New Meadowlands Stadium Dynamic Analysis vs Site Specific and IBC (R=3) § Significant base shear reductions § Significant overturning moment reductions § Reduced uplift anchors proportionately
New Meadowlands Stadium
Seismic ‘R’ Value § Force inversely proportional to R value § Cs= S D1 *I/(T*R), & min Cs = 0.044 I*S DS § For R=3 and R=6, not 2:1 force ratio: min Cs = 0.044 I*S DS
New Meadowlands Stadium
Seismic ‘R’ Value § Structure of ~1.4 to 1.9 sec (Cs min controls for higher R) § Impacts Level of detailing of connx & member size criteria
New Meadowlands Stadium Ÿ R=3 CONNX
Ÿ R=6 CONNX
R6 Benefits § Main member tonnage reduction 350 Tons § No uplift anchors (100+ anchors) R6 Penalties § Full tension capacity conn. (Ry*Ag*Fy)…$$ § Brace beam L b Tonnage, but
