PERT and CPM | Principles and Applications | Third edition | L S Srinath

Transcript of PERT and CPM | Principles and Applications | Third edition | L S Srinath

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24 r e« T A N D c p x

* u f o gm w h ic h fo r t h is c a se i s s 1l o w n 1n Yi e i ; 4 T : :=

吕 iv e 1 t hc n u m be r o f c a r s s t o p p i n g in a g iv e n r a n 吕 e T h i s i s c a ï1e d t he l r 7

qu e n c y pe r gi v e n r a n ge I n o u r c a s e t he a x i s w i1l r e a d f r eq u e n c y p e r 10

1n e u e s

30 r

0 2 0 4 0 6 0 8 0S1u p p i n g d i s t a n c e in m e t r e s

F I G U R E 2 14

I n d r a w i n g t he h is t o g r a m F ig 2 14 t h e t w o a dj a c e n t r a n g e s s u c h a s 20

t o 29 a n d 30 t o 39 a r e m a d e t o t o u c h e a c h o t h e r i e n o g a p i s l e f t b e t w e e n

29 a n d 30 I f t h c r a n g e i s c ha n g e d f r o m 1o m e t r e s t o s o m e o t h e r v a l u e

t h c da t a w i l l g i w a d i û e r e n t h i s t o g r a m Sm a l l e r t h e r a n ge m o r e p r o m in e n t w i l l be t h e d i &e r e n c e s i n h e ig h t s be t w e e n t he b a r s i n t h a t h i s t o g r a m

8 0 r

6 0 卜

F I G U RE 2 15

PER T N ET W O R K A N D T 1M B EST 1M A T ES

T h is m e a n s t ha i i n d i v id u a 1 p r o pe r t ie s w i l l be s h o w n m o r e p r o m i n e n t ly

Fo r o u r a n a l y r is w c a r e i n t e r e s t e d i n g r o u p be h a v i o u r A n d h e n c e a

s u i t n b 1c r a n l c s h o u ld be c ho s e n t o g i v e t h e c o r r e c t p ic t u r e

ï r t h e m id po i n t s o f t he t o p s id e s o f t h e r e c t a n g lc s a r e j o i n e d by a t r a ig h1

1i n e s w c g c t w h a i i s k n o w n a s t h e f r r © e n e r p o tj g o r r & g 2 14 1r t i l e

n u m be r o f c a s e s c o n s i d e r e d ( h e r e t he n u m be r o f c n r s ) i s l a r g e w e c a n

r ed u c e t he i n t e r v a l g r a m t hc p r e s e n t I O m e t r e s) A n d t h e r r e q u e n c y p o ly go n

w i11 c o n s is ¢ o f s h o r t b u t a 1a r g e n u m be r o f s t r a i g h t l i n e s I n t h e l i m i t t he

p o ly g o n w i l l a s s u m e t he s ha p e o f a s m o o r h c u r v e A 1a o k n o w n a s t he r r e

q u c n c y d i s t r i b u t io n c u r v e F i g 2 15

PR O B L E M S

N u m be r t he e v e n t s i n t he n e t w o r k i n F ig 2 16 a c c o r d i n g t o t h c

F u l k c r s

F 1G U R E 2 16

2 D r a w t h e n e t w o r k fo r t h c f o 11o w i n g p r o j e c t a n d n u m b e r t he e v e n t sa c c o r d i n g t o F u lk e r s o n s r u le

E v e n t n u m be r

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PERT and CPM | Principles and Applications | Third edition | L S Srinath

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Transcript of PERT and CPM | Principles and Applications | Third edition | L S Srinath