ce221 s04 quiz1and quiz2

ce221 s04 quiz1and quiz2 - CALPOLY STATE UNIVERSITY-SLO CE...

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Unformatted text preview: CALPOLY STATE UNIVERSITY-SLO ,- _ / CE 221 QUIZZ #1 04/15/04 \%/ 30 Q. l A parapolic vertical curve connects a -1.5% grade with a + 1.8% grade at statio 3+40 and elevation of 186.8 m. Given that a 200-m length of curve is utilized, determine \W the station and elevations of BVC and EVC points. Also, determine the elevation of the middle point on the curve. . S'W/‘t if)?” D QUJI ‘- lfii‘xfl: ‘1‘?) rm (3‘ :1 ”l 3:207:2- ‘32. a i kWh a .2 WT“: l . a 6A " + l '7 (1"... {:12 ':l Lb .-—:«3" 31‘ liws .,._-—-——~--=-~- :— _.._..-—""" 5..“ (4‘- I‘ | 3 2. D a l - \ ~ lrw z a, r "! “an W “H- \ ‘9, . (‘21 l 1—,, _tM I M “\V N}; Y Mm?) \F - _ " .0 mew W, M Nil“ ’5/ I Q.2 A + 3.9% grade intersects a — 1.9% grade at station 20+50 and elevation 306.4 m. (a) Determine the minimum length of the vertical curve based on stopping sight distance for a design speed of 90 km/h, would this length satisfy Caltrans appearance criterion? (b) Calculate the elevation of the highest point. Lxmin ZSLS Z €2- ‘:~ L __./ a sat V (.23— W‘l eat, _ d. A r 2 __ .. - ll Wm zwslgfiflflm ._? F552???“ \ L, ‘1 iii-Fl; Q. 3 While approaching an intersection on -1.0 % grade, the light turned yellow as you were 100 meter away from the cross white line. If you were driving at a speed of 70 km/h and you decided to make a full stop. Assuming a reasonable perception and reaction time, would you cross the white line? Make your reasonable assumption. \Iz’lomlh dr= View (to tmlMl‘Wfizmfi 933W?“ 4;: 0.3l l i i ~ Whimmm am y , as... m {WWW}; : Wm D“ M 35 \ 00m 2,0} Him PfiSutWL 25:33 M {unset b) S=clfl6lb= (42mm +w+z~lml cl 113.___%__fjngfi}g d...»— CE 221 Quizz #2 04/29/2004 m% 0.1 Prepare the superelevation profile diagram if you know that the superelevation rate 6 ‘ (e) = 0.08, TS station is 400+50 and the road is a 2-1ane highway with 3.6-m/lane. What is the station of point SC. 36 erg—w;— L 1—— L= meme) TS =Luol ammo) a; l l 9? w L] obliga- 1.1004 Q o \ H mm ‘3!) Mafia 0 Q.2 A horizontal curve with a radius of 450-111 and A = 35", if the TC station is 150+50, determine the following: station of CT, length of tangent, middle ordinate (M) and the length of chord (C). ‘1‘ L w - mg, Zldfifim 5W ' aw / 011. 1W, Jr L 1 “504630 4, Zt'qu'jl {Va/522661.“: CCTE'j/ \ D T: R4000 £3 ¢ Ultimo“) hawk-'31:") .. \"H. 258 m 1 'T j/ ' r ”mm—I‘M.- E ”WWW _, “Maud-m. ‘ f ’ 4...:- rt: 7. 1 M: VL’ \a cog% : qgo m, wanna (an a ,f 7—0-86 M W ‘\* :pif—mwl = Q3 Determine the x-sectional area of the following earthwork section using coordinate Indho¢ I z (20, 10.5) (30, 10.8) 3 (25,7.5) (33,6.7) \(\ ( Uh. *2/43 7'1-5— " ‘r‘yc "iLL‘ ”If-3‘ I: , '- wk" 1 [Mme — e B + 50km? A me) + 52M - W8) + 21% 35404) if zeta-4) +36i8-}5)+|%1Um6raifl) 2:61, i, :4- MP} ya (DALI - 5L) [5W 4' HP“ HAW-43 + lbw +L-3r.5)+10.?‘3 +— 52mg). MOM 0/ \U/ ...
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