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Unformatted text preview: CALPOLY STATE UNIVERSITYSLO , _ /
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 200m 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. .
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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 __./
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Wm zwslgﬁﬂﬂm ._? F552???“ \ L, ‘1 iiiFl; 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?“
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{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 21ane highway with 3.6m/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 450111 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
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M: VL’ \a cog% : qgo m, wanna (an a ,f 7—086 M W ‘\* :pif—mwl = Q3 Determine the xsectional area of the following earthwork section using coordinate
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(20, 10.5) (30, 10.8) 3 (25,7.5) (33,6.7) \(\ ( Uh. *2/43 7'15— " ‘r‘yc "iLL‘ ”If3‘ I: , ' wk" 1
[Mme — e B + 50km? A me) + 52M  W8) + 21% 35404) if zeta4) +36i8}5)+%1Um6raiﬂ) 2:61, i, :4 MP} ya (DALI  5L) [5W 4' HP“ HAW43 + lbw +L3r.5)+10.?‘3 +— 52mg). MOM 0/ \U/ ...
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 Spring '04
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