This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: 11,4
CALPOLY STATE UNIVERSITYSLO 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 ZOOm 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 Rwal iEVCr" 5+“ V+q0i’\\) i EVCglr : 3 ‘l' 05+“)(I'q) a, = NA w (—1 saym) _   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‘3l0.Dl>
: \ k, ‘ l
S V “6/”, _ “373.7
j “5 "“ 513?
WWWMm : {,y w ,.. »
irth > [DOM ‘3 0‘3 mu ,Hm“.an».....w“4w~nmmuwm.nwmmﬂmw.. m, .,, a V n I “a.
wakuwn.«ﬂ.wmw , lo ...
View
Full
Document
This homework help was uploaded on 02/07/2008 for the course CE 221 taught by Professor Staff during the Winter '04 term at Cal Poly.
 Winter '04
 staff

Click to edit the document details