A Set Volume 2
Card Set Information
A Set Volume 2
a set volume 2
Storm drains should not be used except where the slope of the ground is not suited for ditches, gutters, flumes, and where ___?
space is restricted
which of these conditions is a function of subsurface drainage?
all of the above
the method to lay out an area for drainage structures primarily depends on ___?
distance to be covered
if you are installing culverts or storm drains, the bottom of the trench should be
shaped to fit the pipe
notches are left in the center of check dams to
allow for the normal flow of water
How can you eliminate silting inside a culvert when the grade must be flatter than the inlet ditch grade?
use a sump at the inlet
what can you do if you want to funnel water into the inlet of a culvert?
flare the end walls
intercepting subsurface drainage is required when __
groundwater is within 1 foot of the base course
what type of structure is constructed when filling a ditch or trench with broken or crushed rock?
french drains are not recommended for permanant construction because they have __?
a tendancy to silt up
you should treat the bottom of vertical dry wells with calcium chloride or hay to __
holes in perforated pipe should be placed up when __
the structure is to be placed along the side of the pavement
after you place either you impervious soil layer or filter material for a subsurface structure, make sure the bottom of the trench is
shaped to fit the pipe
what type of drainage inspection should you do during or immediately after a rain storm?
where a drain is blocked because of pipe collapse, you should find the blockage by
probing with cleaning rods
what can you do to correct erosion in front of a check dam?
build a spillway
to control erosion at the outlet end of the culvert, you should ___?
flare the end walls
you should install a drop inlet at the end of a culvert to ?
if a subsurface drain becomes clogged, it can be cleaned by ?
flushing with high pressured water
which soil horizon is the base for all types of pavement construction
which soil classification is made up of sand and gravel and has 50 percent or less passing thru the 200 sieve?
if you are laying out an area for concrete, how many inches on each side should you allow for the width of the forms?
what is the only real difference between laying out a large area and a small area?
amount of work
you should place the first centerline stake for concrete at the ___
beginning of the project
what symbol should be on a stake placed where a curve returns to a straightaway?
on a centerline stake, where is the amount of earthwork to be done marked?
work drawings usually begin by showing
what basic symbol in work drawings requires the greatest understanding
what line in a drawing outlines a specific item to be illustrated?
what is meant by a line composed of a series of short dashes on a drawing?
it represents a hidden line
what is used by the engineer to convey their ideas and thoughts?
what would be the first thing to get to prepare a working drawing?
when preparing a sketch for a sidewalk, which step should you perform first?
physically check to construction site
what should you add to your working sketch?
how are the crosshairs brought into focus on the dumpy level?
by rotating the eyepiece
what device on the self leveling level is used to center the bubble on the bull eye?
the leveling screw
when you carry the engineer level between points on a survey, you should ___?
leave the instrument on the tripod
before embedding the third leg on the tripod, when would it be necessary to move the leg in or out?
to level the head slightly
when you are setting up the tripod on steeply surfaces, place the third leg __
what person takes the rod reading when using a target?
to determine the height of your instrument, you add the benchmark elevation to what reading taken from the leveling rod?
the laser level operates at what RPM?
how many satellites make up the gps system?
gps operates off of what type of signal?
what is the most common length carpenter level we use on small projects?
what type of cut is made to lower the grade for the road or the runway?
which piece of equipment is not recommended for excavating large areas?
no matter what method of excavation you use, you must completely remove___?
A Horizon Soils
one purpose of mechanical stabilization is to __?
increase the drainage
sands and gravel that contain silts and clay are best compacted with ___
pneumatic tired rollers
which function does a blanket or insulating course serve?
helps reduce frost action
how many cubic feet are in one cubic yard?
to compensate for low spots in the subgrade when you are computing base course materials ,what percentage of the computed volume?
the type of portland cement that is slightly resistant to alkaline soil or water is type ___
the type of portland cement used when high strength is required in a very short time is type ___
what type of portland cement is used in large masses of concrete such as large dams?
in a concrete mixture what shape of agregate produces a stronger mixes?
the air volume of air entraining agents makes up what percent of the total volume?
4 to 5 percent
one purpose of air entraining agent is to __
increase resistance to the action of chemicals
what is generally considered to be the third dimension in measurement?
when ordering concrete how much excess should you order?
what executive order number mandated metric usage in federal govt programs?
what type of string should you use as a guide to setting forms?
if a dowel is to be placed across an expansion joint, it must be ___
you can prevent wooden keyways from cracking by?
oiling and grooving with a saw kerf
what is the purpose in using tie bars in concrete?
holds slabs together
what does the slump test of a concrete mix measure
the main factors effecting concrete strength is the ___?
water cement ratio and hydration thats occured
when cardboard molds are used in a compressor strenght test both ends of the cylinders should be ___
how long should the first cubic yard of concrete be mixed in the portable concrete mixer?
when a transit truck is used the concrete should be delivered and discharged within ___
one and a half hours
when transporting concrete you should be careful to prevent?
what is the most widely used mechanical method for consolidating concrete?
when must floating be completed?
before bleed water accumulates on the service
what type of joint is installed to relieve compressive stresses of slab?
if you want a dense smooth surface follow the initial floating by ___
which curing method should you not use when discoloration is objectionable?
when should you apply chemical membranes?
as soon as the concrete is finished
what is the most important part of landscaping?
you can not conduct a walking inspection when ___
time is a critical factor
the pavement preventive maintanence plan should as a minimum relate to all of the following except __?
cost of materials
date of inspection
cost of materials
in what UFC can the guidance concerning pavement maintanence management be found?
the defect characterized by chipping or breaking away of concrete at joint cracks or edges is
the diameter of a random crack saw blade is about __
what do 2 part sealants need before application
what sealant may cause bubbling problems?
SS - S - 1401
the most common way to detect an unsound pavement is to use __
how far from a defect should you make marks for pavement repair?
at least 4 inches
when you saw concrete you should adjust the blade to cut a miniumim depth of
what should you do once a pnuematic drill as begun to penetrate pavement?
slowly increase the speed
for breaking concrete slabs the class of pneumatic hammer most commonly used is
30 to 90 pounds
when should you apply bonding agents?
immediately before the repair material is placed
when sawing defective concrete make your first saw cut a minimum of ___
2 feet away from the joint
for what reason should you add calcium chloride to a concrete mixture?
to increase the concretes early strength
what type of apoxy can be used for repairing spalls or filling saw kerfs?