Section 4 - LARE Practice Exam- question

[Sophie S]

Question 22: Grading plan for a road.

Answer gives contour 3 for a,b,c,d,e and contour 4 for f,g.

I may have been staring at this for too long - but shouldn't the answer be the reverse if the road profile shows the road sloping down then up and that the mid-point between the two types of contours would be a low point?

Thanks - totally burnt here, sophie

[ADMIN]

Hey Sophie, there's no image in your post. Can you include one or refer to the practice exam that you're using (ex. CLARB?)

[Sophie S]

Sorry! CLARB 2013 Sample Questions.Question #22. See attached.

Thanks, Sophie

[Kirsten Radomski]

Hi, 

This is definitely a type of question that will show up on the exam for Sec 4.  (especially if you were to add a sidewalk or swale to the section...) 

I would think of the crown of the road being a ridge.  And remember ridge vs. a swale ( ridges the contours point downhill and swales point uphill.  Sometimes if I get confused I will draw it out the way I think and put little arrows to diagram the water flow to check if I have it right... 

Hope this helps! 

[Sophie S]

Thanks, Kirsten - I needed your message to trigger what I know. I just couldn't see this at all yesterday! yikes...

sophie

[Mario Rojo]

The question is asking you to lay out the grading plan for the road, that road profile they show at the top is meant to be misleading and distract you.  The give away should be that the apex of the contour is always going to point down hill, so for the left side (abcde) contour 3 is pointing towards the lowest point of elevation on the plan, same for the other side.

[Annie]

I wanted to share a couple of things that will be very likely appear on section 4 exam that you will need to study for.  I recommend memorizing the component of the infiltration basin diagram on the Site Engineering Book or something similar to this link below.  

 https://www.google.com/search?biw=1920&bih=950&tbm=isch&sa=1&q=infiltration+pond+detail&oq=infiltration+pond+detail&gs_l=psy-ab.3...7831.9776.0.9980.12.11.0.0.0.0.169.1276.0j8.8.0....0...1.1.64.psy-ab..4.6.962...0j0i8i30k1j0i24k1j0i30k1.cazUEKt7gXU#imgrc=893I3XhwkqDQ0M:

• Knows the type of retaining wall and able to identify them. 
• Determine which is a rigid retaining wall and which is flexible
• Understand what is shear strengths, bearing capacity, permeability.  
• Know the hierarchy of dimensions on Site Engineering book "Fixed dimensions, Semiflexible, and Flexible Dimensions" for laying out material in the field.  
• Greenroof
• Green Retaining Wall
• What's included in the concrete spec
• What's in the technical specs and types of technical specs
• Best Management Practice (BMP)
• Understand Excavation and Site Grading (borrow pile, spoil pile and etc...)
• Xeriscape
• Cone Penetration Test
• Slump Test
• Concrete compaction test procedure
• Urban Heat Island
• Know what's on the Tree Protection and Preservation Plan
• Know what can be requested on a Topographic Survey and Tree Survey
• Know the materials used on an erosion plan-bale slope barrier, silt fence, etc...
• Know how to calculate invert, catch basin, rims, and etc so you can do your calculation.
• ADA ramp and landing- width, run, turn, min distance
• Q=CIA
• Know how to calculate storm size using the nomograph chart
• Know the difference and why we use swale, retention, and detention pond
• Know the element of a planting pit
• Know what's included in a construction contract
• Fully understand SWM (Storm Water Management)
• Concrete Testing - type of test and what it is used to measure - Slump test, air content test, cylinder test

You will have to rely heavily on both the Time Saver and Site Engineering book for this exam.  

Best wishes!

[Alexis Davis Millar]

Thanks so much for taking the time to share this. What an amazingly valuable post!!! Thanks - taking 1st pass of Section 4 on Tuesday!
Best to you

[Claudia Visconti]

Hi annie,

Where did you find information on solving the IE and rim elevations !?

[Jon F.]

This is 2 years late, but can anyone explain the placement of the answers? I am really confused why abcde are so close together in their particular locations and fg are spaced out in their locations. I understand ridges and swales but where to correctly place them confuses me. The question was to place contours for 60-64,  but the answer clearly places contours in the 50s vicinity...

[Jared G]

You need to consider the profile above the plan. The slope of the proposed grade for ABCDE is greater than the slope for F&G. Also, the proposed grade is in the 60-64 range.