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Presented by: Armindo Monteiro, P.E. Senior Associate October 29, 2008

New Meadowlands Stadium East Rutherford, New Jersey

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

Site Location § ~6 Mi from NYC § Meadowlands Complex § Bounded by I95 and Route 3 § Overall project impacts 270 acres § Land Leased from NJSEA

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 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 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

§ 10 inch thick normal weight field slab

§ Continuous mat reinforcement

Approx. 25’

~ 12’ o.c.

Field Slab Part Plan Typ. Service Level Slab Part Plan

New Meadowlands Stadium Pile Supported Framed Slab on Grade

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.

Longitudinal

Radial Braced Frames

Braced Frames

Lower Bowl

Braced Frame

Mid Bowl

Upper Bowl

Suite Level A

Suite Level B Suite Level C

New Meadowlands Stadium Typ. Sideline Bent Elevation

Precast Seating Units

Lower Bowl

Braced Frame

Mid Bowl

Upper Bowl

Typ. Endzone Bent Elevation

Precast Seating Units

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

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

S DS > 0.5

S D1 > 0.2 } CAT. D

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

§ $$$

SITE SPECIFIC § Sds:0.48g § Sd 1 :0.175g § SDC “C” § R=3

IBC 2000 § Sds:0.555g § Sd 1 :0.22g § SDC “D” § 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

Dynamic Analysis vs Site Specific and IBC (R=3)

§ Significant base shear reductions

§ Significant overturning moment reductions

§ Reduced uplift anchors proportionately

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

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 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 <=L pd § Other detailing reqm’t Final Result: R=3 selected

� R=3 CONNX

� R=6 CONNX

Expansion Joints § No double columns and no slide bearings § Cantilever floor system § Aesthetically cleaner § >Tonnage, but < detailing costs

Expansion Joint § E.O.S. to E.O.S. Dim = max EQ drift + temp + tolerance

§ Sacrificial element between slab edge dimension based on install temp

§ ‘X’ Dim accommodates temp & wind drift

§ Same detail all floors § Designed for forklift point load

Exp. Jt. EOS EOS

Sacrificial Elements

New Meadowlands Stadium 500 ft

Stadium Four Expansion Joints at “corners”

~910 ft

~740 ft

Max 670 Ft without exp. Jt.

Max 630 Ft w

t exp. Jt.

New Meadowlands Stadium Sideline Braced Frame Locations § Long. frames within 350 ft § Ductile connx detail

EXP. JOINT

BRACED FRAME

EXP. JOINT

� Radial Braced Frames, Typ.

Typ. Longitudinal Braced Frame

� 350 FT.

New Meadowlands Stadium Endzone Braced Frame Locations § Longitudinal frames centered § Sim. Ductile connx’s used

BRACED FRAME

EXP. JOINT

� Radial Braced Frames

Typical Bays § Spans up to 55’, typical modern stadium span approx. 40’45’

§ Reduce number of pieces and erection time

§ Nominal add’l tonnage § Restricted live load deflection at façade components to 1 ¼”

Typical Bay Study § Exist Giant’s stadium ~30 ft bays § Reduce number of pieces of Steel, Precast, facade § Reduces fireproofing quantity

ANY QUESTIONS?

Thank you Armindo G. Monteiro, P.E. Thornton Tomasetti 24 Commerce St. Newark, NJ 07102 T 973.286.6100 F 973.286.6101

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