Ultimate Strength Design (Singly)

 Reinforced Concrete Design ( RCD – 1 )  Monday 5:00 – 9:00 / Thursday 6:00 – 9:00  Engr. Alberto S. Cañete - ro!essor 

Ultimate Strength Design (USD)  Lecture Notes "#6 – "#$ 

USD (Ultimate Strength Design)

LOADS & LOAD FACTORS CHAPTER 2 • • • •

Dead Loads Gravity / Vertical Forces Live Loads Wid Loads Hori!otal / Lateral Forces Eart"#$a%e Loads

Eart"#$a%e Load • •

Wid Load

For li"t str$ct$res' t"e desi load is t"e (id load For "eavy str$ct$res / "i" ) storey *$ildis' t"e desi load is t"e eart"#$a%e load

+it (ei"t o, -$re cocrete . 01 -c, or 2234 %5/64 +it (ei"t o, rei,orced cocrete . 17 -c, or 2487 %5/64 OR 20 %5/64 LOAD FACTOR 

Dead Load . 77 9 07 . 07

 Reinforced Concrete Design ( RCD – 1 )  Monday 5:00 – 9:00 / Thursday 6:00 – 9:00  Engr. Alberto S. Cañete - ro!essor 

Live Load . 77 9 :7 . :7

Ultimate Strength Design (USD)  Lecture Notes "#6 – "#$ 

LOAD CO; : LL + . re#$ired stret" . 7:1 ?0D > :L >:W@ . 71 D > 2:1 L > 2:1 W + . 42D >  , L >  E , . 71 ,or or6al *$ildis ?,or ot"er live loads@ . 7 ,or ,loor i -laces o, -$*lic asse6*ly area' ,or live loads i e9cess o, 03 %Pa' ad ,or arae live load

PD . 27 %5 PL . 87 %5 Fid P$ P$ . 0 ?27@ > : ?87@   . 2:7 %5 Fid ;+ ?Desi Factored ;o6et@ ;+ . 2 P$ . 2?2:7@ ;+ . 420 %56 OR

;D . 2 PD . 2?27@ . 00 %56 ;L . 2 PL . 2?87@ . :2 %56 ;+ . 0 ;D > : ;L . 0?00@ > :?:2@ ;+ . 420 %56

 Reinforced Concrete Design ( RCD – 1 )  Monday 5:00 – 9:00 / Thursday 6:00 – 9:00  Engr. Alberto S. Cañete - ro!essor 

Ultimate Strength Design (USD)  Lecture Notes "#6 – "#$ 

Pro*le6

Fid Desi ;o6et B < Dead Loads B A ,y  *al . As *al . K 731 ,c  *d ,y

877 877 > ,y

6a9 . 7:1* ;a9i6$6 Steel Ratio' 6i 6i . As6i  . ,c or 0 ("ic"ever is