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ce221 Quiz1 W05

# ce221 Quiz1 W05 - 11,4 CALPOLY STATE UNIVERSITY-SLO 30 CE...

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Unformatted text preview: 11,4 CALPOLY STATE UNIVERSITY-SLO 30 CE 221 QUIZZ #1 01/25/05 Name Sec: :2 Q. 1 A parabolic vertical curve connects a -1.4% grade With a + 1.9% grade at station 3+40 and elevation of 186.8 m. Given that a ZOO-m length of curve is utilized, determine the station and elevations of BVC and EVC points. Also, determine the elevation of the middle point on the curve and the slope at this point. a, : «4.4 pg; 34a 3*‘40 L: ROOM FCIA BVC. a» ﬁve I .L P: 3 MI’APDMM} O‘F L 59 O’lShAQL "l’v BVC AHA EVC- \S [DOM/J. 5+“ Muhw1.‘3ue~4rw‘u.‘»wvau~«.vl w m4 . .. m. , M , KEVL: 56a R-wal iEVCr" 5+“ V+q0i’\\) i EVCglr : 3 ‘l' 05+“)(I'q) a, = NA w- (—1 say-m) _ -- -------- W / :m2m\ ? ‘iﬁlile/ K W} " " ., I :- = 4 fx (0 ; 15g, 2 + (—M/X/oo) + 5°C“ a: 5). V : /8f~?‘ /V0“"8?‘5‘ siege ‘ 0.25 0 . 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 for a stopping sight distance of 150 m and design speed of 90 km/h, would this length satisfy the appearance criterion? (b) Determine the elevation of the highest point. 91:54; ?o+fo Q» 3 3“} eh; 30544“ ‘32 7 "'"O' A : 3.9 + l ‘l '2 : leulh :j'é‘ (“Sﬁuh’n’nv 4f V04 1 l [Mia I so) ' 12V VOW AQQIA/hna o ‘ '< S V,“ LMM : 290 v 3 2 V a ,w _m “mkﬁkdgmm S*+I‘§J'I'¢S‘ a Gfandl [I “5th ‘ I CHM“ lb) ‘ .1"? : 21 . m '00:? 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. L v ‘v g = a” * “0” d" = W" 9gb ‘ 250511;) : (7o)(2.§> M341 — 2(9.Q)(0‘3l-0.Dl> :- \ k, ‘ l S V “6/”, _ “373.7 j “5 "“ 513? WWW-Mm : {,y w ,.. » irth > [DOM ‘3 0‘3 mu ,Hm“.an»...-..w“4w~nmmuwm.nwmmﬂmw-.. m, .,, a V n I “a. wakuwn-.«ﬂ.wmw , lo ...
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