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tom yost tom yost B A E / M A E - s t r u c t u r a l o p t i o - - PowerPoint PPT Presentation

tom yost tom yost B A E / M A E - s t r u c t u r a l o p t i o n g r a n b y t o w e r b t n o r f o l k , v i r g i n i a f l k i i i s e n i o r t h e s i s p r e s e n t a t i o n 1 4 a p r i l 2 0 0 8 1 4 a p r i l 2 0 0


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SLIDE 1

tom yost tom yost

B A E / M A E - s t r u c t u r a l o p t i o n

b t g r a n b y t o w e r

f l k i i i n o r f o l k , v i r g i n i a s e n i o r t h e s i s p r e s e n t a t i o n 1 4 a p r i l 2 0 0 8 1 4 a p r i l 2 0 0 8

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SLIDE 2

g r a n b y t o w e r n o r f o l k , v i r g i n i a g y

, g

  • b u i l d i n g o v e r v i e w
  • p r o p o s a l
  • g o a l s
  • g o a l s
  • d e p t h
  • g r a v i t y s y s t e m r e d e s i g n
  • b r e a d t h s t u d y
  • r e d u c t i o n i n c o n s t r u c t i o n s c h e d u l e
  • c o s t a n a l y s i s
  • c o n c l u s i o n / r e c o m m e n d a t i o n
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SLIDE 3

g r a n b y t o w e r n o r f o l k , v i r g i n i a g y

, g

  • 3 4 s t o r y p o s t - m o d e r n m i x e d - u s e h i g h - r i s e
  • 3 0 2 l u x u r y c o n d o m i n i u m s
  • f f i c e s

h

  • s h o p s
  • p a r k i n g g a r a g e

7 8 1 4 7 9

  • s q u a r e f o o t a g e : 7 8 1 , 4 7 9
  • s i t e a r e a : 2 . 3 2 a c r e s
  • p r o j e c t c o s t : $ 1 8 1 , 0 0 0 , 0 0 0
  • r i g i n a l p r o j e c t d u r a t i o n : S e p t 2 0 0 5

N o v 2 0 0 9

  • r i g i n a l p r o j e c t d u r a t i o n : S e p t 2 0 0 5 – N o v 2 0 0 9
  • C o n s t r u c t i o n d e l a y e d s i n c e 1 8 S e p t e m b e r 2 0 0 7
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SLIDE 4

g r a n b y t o w e r n o r f o l k , v i r g i n i a g y

, g

  • l o c a t i o n : 5 1 5 G r a n b y S t r e e t
  • v i e w s o f d o w n t o w n N o r f o l k a n d E l i z a b e t h R i v e r
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SLIDE 5

g r a n b y t o w e r n o r f o l k , v i r g i n i a g y

, g

  • w n e r : M a r a t h o n D e v e l o p m e n t / 5 1 5 G r a n b y, L L C .
  • a r c h i t e c t : H u m p h r e y s & P a r t n e r s A r c h i t e c t s , L P.
  • s t r u c t u r a l : A b i o u n e s s

C r o s s a n d B r a d s h a w I n c

  • s t r u c t u r a l : A b i o u n e s s , C r o s s a n d B r a d s h a w, I n c .
  • p r o j e c t m a n a g e m e n t : Tu r n e r C o n s t r u c t i o n C o .
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SLIDE 6

g r a n b y t o w e r n o r f o l k , v i r g i n i a g y

, g

  • e x i s t i n g f o u n d a t i o n
  • 1 2 ” & 1 4 ” s q u a r e , p r e c a s t , p r e - s t r e s s e d c o n c p i l e s
  • v e r 1 2 0 0 p i l e s t h r o u g h o u t s i t e

2 5 5 1 4 ” S P P C i l i t h 1 0 ’ t h i k i l

  • 2 5 5 – 1 4 ” S P P C p i l e s w i t h 1 0 ’ t h i c k p i l e c a p

s u p p o r t s h e a r w a l l c o r e .

  • 1 5 6 t e n s i o n p i l e s

1 5 6 t e n s i o n p i l e s

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SLIDE 7

g r a n b y t o w e r n o r f o l k , v i r g i n i a g y

, g

  • e x i s t i n g f l o o r s y s t e m
  • 8 ” t w o - w a y p o s t - t e n s i o n e d f l a t p l a t e
  • f ’ c = 5 0 0 0 p s i

½ ” 7 i l l t i t d

  • ½ ” ø 7 - w i r e , l o w r e l a x a t i o n s t r a n d
  • 1 d a y t o p o s t - t e n s i o n i n g p e r f l o o r
  • 4 6 d a y s s h o r i n g t i m e

4 6 d a y s s h o r i n g t i m e

  • e x i s t i n g c o l u m n s
  • c a s t - i n - p l a c e s q u a r e o r r e c t a n g u l a r c o l u m n s
  • c a s t - i n - p l a c e s q u a r e o r r e c t a n g u l a r c o l u m n s
  • f ’ c = 6 5 0 0 p s i ( b a s e t o l e v e l 6 )
  • f ’ c = 5 0 0 0 p s i ( l e v e l 7 a n d u p )
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SLIDE 8

g r a n b y t o w e r n o r f o l k , v i r g i n i a g y

, g

  • e x i s t i n g l a t e r a l s y s t e m
  • r d i n a r y r e i n f o r c e d c o n c r e t e s h e a r w a l l c o r e s
  • b a s e t o l e v e l 6 : 2 4 ” t h i c k , f ’ c = 8 0 0 0 p s i

l l l l 2 3

1 4 ” t h i k f ’ 6 0 0 0 i

  • l e v e l 7 t o l e v e l 2 3 : 1 4 ” t h i c k , f ’ c = 6 0 0 0 p s i
  • l e v e l 2 4 t o l e v e l 3 4 : 1 4 ” t h i c k , f ’ c = 5 0 0 0 p s i
  • t y p i c a l b o u n d a r y e l e m e n t r e i n f o r c e m e n t : ( 1 0 ) # 1 0

t y p i c a l b o u n d a r y e l e m e n t r e i n f o r c e m e n t : ( 1 0 ) # 1 0

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SLIDE 9

g r a n b y t o w e r n o r f o l k , v i r g i n i a g y

, g

  • c o n s t r u c t i o n d e l a y
  • c o n s t r u c t i o n s t o p p e d 1 8 s e p t e m b e r 2 0 0 7
  • i n i t i a l i n v e s t o r r e n e g e d l o a n c o m m i t m e n t

g

  • l e s s s t r i n g e n t l e n d i n g l a w s l e d t o a b u n d a n c e o f

s u b - p r i m e l e n d i n g a n d r e s u l t e d i n f o r e c l o s u r e s i i d t h i l

  • e c o n o m i c r e c e s s i o n d u e t o h o u s i n g s l u m p
  • t i g h t e n i n g c r e d i t r e q u i r e m e n t s
  • n e e d n e w i n v e s t o r t o s e c u r e b a n k l o a n

n e e d n e w i n v e s t o r t o s e c u r e b a n k l o a n

  • n e e d 7 0 % o f u n i t s s o l d f o r l o a n
  • A l m o s t 5 0 % o f u n i t s s o l d
  • R e m a i n i n g u n i t s r e q u i r e “ j u m b o ” m o r t g a g e
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SLIDE 10

p r o p o s a l s u m m a r y p p y

  • g r a v i t y s y s t e m r e d e s i g n
  • G i r d e r - S l a b s y s t e m
  • k e e p o r i g i n a l d e s i g n f o r l o w e r 7 f l o o r s

p g g

  • a l l o w s t i m e t o f i n i s h r e d e s i g n
  • m i n i m a l d i s t u r b a n c e t o f o u n d a t i o n s

i i l t b t f k i

  • r i g i n a l s y s t e m b e s t f o r p a r k i n g g a r a g e
  • a l l o w s f o r s t e e l a n d p r e c a s t p r o c u r e m e n t
  • c h e c k s h e a r w a l l r e i n f o r c e m e n t

c h e c k s h e a r w a l l r e i n f o r c e m e n t

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SLIDE 11

g o a l s g

  • p r o v e a p p l i c a b i l i t y o f G i r d e r - S l a b s y s t e m
  • k e e p m i n i m u m f l o o r d e p t h
  • r e a l i z e b e n e f i t s o f s t e e l c o n s t r u c t i o n
  • d e c r e a s e c o n s t r u c t i o n s c h e d u l e
  • c a t c h u p o n d e l a y e d s c h e d u l e
  • s a v e o n c o n s t r u c t i o n l o a n s
  • s a v e m o n e y
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SLIDE 12

g i r d e r - s l a b s y s t e m g y

  • c o m p o s i t e s t e e l a n d p r e - c a s t s y s t e m
  • p e n - w e b d i s s y m m e t r i c b e a m s
  • b e n e f i t s
  • s h a l l o w f l o o r d e p t h
  • s p e e d o f s t e e l c o n s t r u c t i o n
  • n o s h o r i n g w i t h p r e c a s t
  • n o s h o r i n g w i t h p r e c a s t
  • l i g h t e r s y s t e m t h a n e x i s t i n g
  • l i m i t a t i o n s
  • l i m i t a t i o n s
  • m a x D - B e a m s p a n 1 8 ’
  • r e g u l a r b a y s

r e g u l a r b a y s

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SLIDE 13

p o s s i b l e c o l u m n l a y o u t s p y

  • c o l u m n l a y o u t 1
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SLIDE 14

p o s s i b l e c o l u m n l a y o u t s p y

  • c o l u m n l a y o u t 1
  • b a y s i z e : 1 6 ’ x 3 0 ’
  • p r o s :
  • m i n i m a l a r c h i t e c t u r a l i n t r u s i o n
  • s i m p l y s u p p o r t e d c o n d i t i o n f o r a l l p l a n k s
  • c o n s :
  • t w o - w a y t r a n s f e r s l a b a t 7 t h l e v e l
  • a d d i t i o n a l t r a n s f e r l e v e l a t 2 5 t h l e v e l
  • i n c r e a s e d b u i l d i n g h e i g h t
  • i n c r e a s e d b u i l d i n g h e i g h t
  • i n c r e a s e d c o s t
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SLIDE 15

p o s s i b l e c o l u m n l a y o u t s p y

  • c o l u m n l a y o u t 2
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SLIDE 16

p o s s i b l e c o l u m n l a y o u t s p y

  • c o l u m n l a y o u t 2
  • b a y s i z e : v a r y i n g s i z e s
  • p r o s :
  • n e - w a y t r a n s f e r g i r d e r s ( i n s t e a d o f t w o - w a y )
  • s i m p l y s u p p o r t e d c o n d i t i o n f o r a l l p l a n k s
  • m a i n t a i n c o l u m n p l a c e m e n t a s b u i l d i n g t a p e r s
  • c o n s :
  • a d d i t i o n a l c o l u m n s
  • i n c r e a s e d a r c h i t e c t u r a l i n t r u s i o n
  • i n c r e a s e d a r c h i t e c t u r a l i n t r u s i o n
  • i n c r e a s e d b u i l d i n g h e i g h t
  • i n c r e a s e d c o s t
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SLIDE 17

p o s s i b l e c o l u m n l a y o u t s p y

  • c o l u m n l a y o u t 3
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SLIDE 18

s p e c i a l c o n n e c t i o n s p

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SLIDE 19

p o s s i b l e c o l u m n l a y o u t s p y

  • c o l u m n l a y o u t 3
  • b a y s i z e : o r i g i n a l b a y s
  • p r o s :
  • n o t r a n s f e r g i r d e r s r e q u i r e d
  • n o i n c r e a s e i n b u i l d i n g h e i g h t
  • n o a r c h i t e c t u r a l i n t r u s i o n
  • c o n s :
  • c o s t l y m o m e n t c o n n e c t i o n s
  • a d d i t i o n a l f l o o r d e p t h r e q u i r e d a t c a n t i l e v e r s
  • a d d i t i o n a l f l o o r d e p t h r e q u i r e d a t c a n t i l e v e r s

c o l u m n l a y o u t 3 – b e s t o p t i o n

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SLIDE 20

c a n t i l e v e r s

  • l e v e l s 8 t h r o u g h 2 4
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SLIDE 21

c a n t i l e v e r s

  • m o m e n t c o n n e c t i o n
  • e c o n o m y i n m i n d – n o f i e l d w e l d s
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SLIDE 22

c a n t i l e v e r s

  • c a n t i l e v e r e d b e a m b e t w e e n A 1 & A 2
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SLIDE 23

c a n t i l e v e r s

  • c a n t i l e v e r A 1 & B 1
  • a n g l e w e l d e d t o w e b f o r l o w p r o f i l e
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SLIDE 24
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SLIDE 25

l a t e r a l a n a l y s i s y

  • E TA B S
  • c o n s i d e r e d a d d i t i o n a l w i n d

c a s e s f r o m A S C E 7 - 0 5 , f i 6 9 f i g u r e 6 - 9

  • a s s i g n e d p i e r s
  • p i e r f o r c e s c h e c k e d w i t h

p i e r f o r c e s c h e c k e d w i t h P C A C o l u m n b o u n d a r y e l e m e n t s o k a y

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SLIDE 26

c o n s t r u c t i o n s c h e d u l e

  • e x i s t i n g s c h e d u l e
  • d u r a t i o n : 3 5 3 d a y s ( l e v e l 8 t o s u b s t a n t i a l c o m p l e t i o n )
  • t y p i c a l f l o o r d u r a t i o n : 1 9 2 d a y s
  • 4 6 d a y s s h o r i n g t i m e r e q u i r e d
  • 4 6 d a y s s h o r i n g t i m e r e q u i r e d
  • 8 d a y f l o o r s c h e d u l e
  • p r o p o s e d s c h e d u l e
  • d u r a t i o n : 2 6 6 d a y s ( 8 7 d a y r e d u c t i o n )
  • t y p i c a l f l o o r d u r a t i o n : 1 2 9 d a y s
  • g i r d e r s l a b e r e c t i o n p a c e : 5 0 0 0 S F / d a y
  • g i r d e r - s l a b e r e c t i o n p a c e : 5 0 0 0 S F / d a y
  • 5 d a y f l o o r s c h e d u l e
  • c h a n g e i n c r e w s i z e s
  • s h e a r w a l l s : 8 d a y s p e r t w o l e v e l s ( 4 d a y s / l e v e l )
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SLIDE 27

c o s t a n a l y s i s y

  • e x i s t i n g s y s t e m

Columns $1,368,412.91 C O N C R E T E S Y S T E M

  • R S M e a n s
  • l o c a l p r i c i n g

$ , , Placing $73,201.13 Slab $8,609,845.50 Placing $363,526.81

  • p r o p o s e d s y s t e m
  • G i r d e r - S l a b Te c h n o l o g i e s

Total $10,414,986.35 S T E E L S Y S T E M

  • G i r d e r - S l a b Te c h n o l o g i e s
  • R S M e a n s

Columns $2,481,651.41 D Beams $1,026,992.48 W Shapes $1,800,467.37 Planks $6,044,111.54 Grouting $774,886.10 Topping $1,139,538.38 $ Mom Con $579,700.00 Total $13,847,347.28 GS Licensing Fee: +10% TOTAL $15 232 082 01 TOTAL $15,232,082.01

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SLIDE 28

c o s t a n a l y s i s y

  • s a v i n g s d u e t o s c h e d u l i n g
  • g e n e r a l c o n d i t i o n s
  • 4 m o n t h s a v i n g s = $ 1 . 2 M
  • c o n s t r u c t i o n l o a n
  • c o n s t r u c t i o n l o a n
  • 4 m o n t h s o f $ 1 4 0 M l o a n a t 1 2 % p e r y e a r = $ 5 . 6 M

( a t e n d o f p r o j e c t )

  • v e r a l l s y s t e m c o s t

Steel $15,232,082.01 Concrete ($10,414,986.35) N E T R E D E S I G N C O S T ($ , , ) GC ($1,166,670.00) Loan ($5,600,000.00) TOTAL $1 949 574 34 TOTAL ‐$1,949,574.34

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SLIDE 29

w e r e g o a l s m e t ? g

  • G i r d e r - S l a b s y s t e m f e a s i b l e r e d e s i g n ?
  • d e c r e a s e c o n s t r u c t i o n s c h e d u l e ?
  • s a v e m o n e y ?
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SLIDE 30

r e c o m m e n d a t i o n

  • g r a v i t y s y s t e m r e d e s i g n
  • g i r d e r - s l a b a p p l i c a b l e f o r u p p e r 2 7 f l o o r s
  • a l l o w s f o r e a s y i n t e g r a t i o n

i i l h i t t l i t i

  • m i n i m a l a r c h i t e c t u r a l i n t r u s i o n
  • c o n s t r u c t i o n s c h e d u l e
  • c o n s t r u c t i o n s c h e d u l e
  • r e d u c e d s c h e d u l e b y 8 7 d a y s
  • t i m e s a v i n g s w i l l a i d i n c o n d o s a l e s

g

  • c o s t a n a l y s i s
  • s a v e d o w n e r $ 1 . 9 5 M i n c o n s t r u c t i o n c o s t s

g i r d e r - s l a b s y s t e m r e c o m m e n d e d f o r r e d e s i g n

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SLIDE 31

a c k n o w l e d g e m e n t s g

I would like to thank the following people for all of their help during this thesis research process: thesis research process: Industry Professionals: David Wysong – Turner Construction Daniel Fisher – Girder-Slab Technologies Daniel Fisher Girder Slab Technologies Elias Logothetis Professors:

  • Dr. Andres Lepage – Penn State University

Colleagues: g Nasser Abdul-Azim Mohammed Jawad Hassan Marafi Brian Heart “Captain” Kirk Stauffer Phil “Fillet Weld” Frederick Allen Sky Walker And most of all, my family for supporting me and encouraging me to follow my dreams.

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SLIDE 32

q u e s t i o n s ? q

slide-33
SLIDE 33
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SLIDE 34

s p e c i a l c o n n e c t i o n s p

  • g i r d e r - s l a b t r e e c o n n e c t i o n
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SLIDE 35

s p e c i a l c o n n e c t i o n s p

  • e m b e d d e d p l a t e a t s h e a r w a l l s
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SLIDE 36

c o n s t r u c t i o n s c h e d u l e

slide-37
SLIDE 37

c o n s t r u c t i o n s c h e d u l e

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SLIDE 38

c o n s t r u c t i o n s c h e d u l e

slide-39
SLIDE 39

c o n s t r u c t i o n s c h e d u l e

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SLIDE 40

c o n s t r u c t i o n s c h e d u l e

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SLIDE 41

c o n s t r u c t i o n s c h e d u l e

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SLIDE 42

c o n s t r u c t i o n s c h e d u l e

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SLIDE 43

c o n s t r u c t i o n s c h e d u l e