Tilt-Up Concrete Test EXAM Questions & Answers
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Terms in this set (97)
1. Design
2. Planning
List the five steps to a
3. Construction
successful tilt-up project.
4. Erection
5. Creating Finishes
available space to cast panels
Select three
weight of panels on certain soils
disadvantages of tilt-up
availability of lifting equipment
construction
temporary bracing during construction
Tilt up concrete is the technique of site casting
Define tilt-up. concrete wall panels on a horizontal surface and then
lifting or tilting them into place.
Who is known as the Robert Aiken
father of tilt-up?
Cold weather is defined as True
a period when the
average daily temperature
<5ºC (40ºF) for 3
successive days and the
temperature stays <10ºC
(50ºF) for more than ½ of
any 24 hour period.
,Concrete will freeze if the True
temperature falls below
-4ºC (25ºF).
What temperature range 35ºF
within the concrete (from
the surface to the center)
should be maintained to
avoid cracking?
Recommended concrete 55ºF
temperature at the time of
placement of a concrete
element 10-inches in
thickness is _________.
Concrete should be True
placed at the lowest
practical slump.
FF = Flatness : controls local surface bumpiness by
limiting the magnitude of successive 1 ft. slope
changes.
FL = Levelness : limits differences in departures from
What are F-Numbers (FF
design grade over distances of 10 ft. (measure of floor
and FL)?
pitch)
F numbers are a standard of specification and
measurement of the flatness and levelness of
concrete floors.
They were unrealistic, unscientific, and not repeatable
What was wrong with the
to use. There was a disagreement as to what they
old "straightedge" specs?
meant.
How are F-Numbers Using F-numbers are better than the straight edge
better than the straight method because they are easier to identify and
edge method? manage the floors features for it to qualify as good.
, What F-Number FF50 is about equal to 1/8" for 10'
approximately equals
1/8th inch in 10 feet?
Meeting an FF 50 of flatness is considered very flat or
What is difficult about
almost super flat meaning 1/8" needs to be met every
meeting an FF 50?
10'
Flatness is measured by the difference in slope over 2'
How are F-numbers
and levelness is measured by the difference in
measured?
elevation by more than 10'
Specified overall flatness = 60
What is a Superflat floor?
Specified overall levelness = 40
What FF and FL number I would say either flat or very flat due to these slabs
would you recommend for will be standing upright supporting the structure.
a tilt-up project Therefore they need to be square and plumb.
(remember the slab-on- Additionally they are the finishes on the outside as
grade is your forming well so everything needs to look straight and flat.
surface for your panels)?
grade refers to a surface
a casting surface intended to set larger aggregate or
stones in a random pattern resulting in uneven
sand bed
surfaces that would not otherwise be effective on a
solid concrete slab
slab-on-grade a concrete slab cast on the ground surface
subgrade the surface below a slab or below a base
base a granular material placed directly below the slab
a concrete slab containing either WWF, reinforcing
reinforced slab
bars, or fiber
It is determined by the soils engineer after performing
How is the subgrade
a test at the site. The test meaures the load required to
modulus determined?
compress a 30" diameter steel plate 0.05" into the soil
| 100% Verified solutions | Latest!!
Save
Terms in this set (97)
1. Design
2. Planning
List the five steps to a
3. Construction
successful tilt-up project.
4. Erection
5. Creating Finishes
available space to cast panels
Select three
weight of panels on certain soils
disadvantages of tilt-up
availability of lifting equipment
construction
temporary bracing during construction
Tilt up concrete is the technique of site casting
Define tilt-up. concrete wall panels on a horizontal surface and then
lifting or tilting them into place.
Who is known as the Robert Aiken
father of tilt-up?
Cold weather is defined as True
a period when the
average daily temperature
<5ºC (40ºF) for 3
successive days and the
temperature stays <10ºC
(50ºF) for more than ½ of
any 24 hour period.
,Concrete will freeze if the True
temperature falls below
-4ºC (25ºF).
What temperature range 35ºF
within the concrete (from
the surface to the center)
should be maintained to
avoid cracking?
Recommended concrete 55ºF
temperature at the time of
placement of a concrete
element 10-inches in
thickness is _________.
Concrete should be True
placed at the lowest
practical slump.
FF = Flatness : controls local surface bumpiness by
limiting the magnitude of successive 1 ft. slope
changes.
FL = Levelness : limits differences in departures from
What are F-Numbers (FF
design grade over distances of 10 ft. (measure of floor
and FL)?
pitch)
F numbers are a standard of specification and
measurement of the flatness and levelness of
concrete floors.
They were unrealistic, unscientific, and not repeatable
What was wrong with the
to use. There was a disagreement as to what they
old "straightedge" specs?
meant.
How are F-Numbers Using F-numbers are better than the straight edge
better than the straight method because they are easier to identify and
edge method? manage the floors features for it to qualify as good.
, What F-Number FF50 is about equal to 1/8" for 10'
approximately equals
1/8th inch in 10 feet?
Meeting an FF 50 of flatness is considered very flat or
What is difficult about
almost super flat meaning 1/8" needs to be met every
meeting an FF 50?
10'
Flatness is measured by the difference in slope over 2'
How are F-numbers
and levelness is measured by the difference in
measured?
elevation by more than 10'
Specified overall flatness = 60
What is a Superflat floor?
Specified overall levelness = 40
What FF and FL number I would say either flat or very flat due to these slabs
would you recommend for will be standing upright supporting the structure.
a tilt-up project Therefore they need to be square and plumb.
(remember the slab-on- Additionally they are the finishes on the outside as
grade is your forming well so everything needs to look straight and flat.
surface for your panels)?
grade refers to a surface
a casting surface intended to set larger aggregate or
stones in a random pattern resulting in uneven
sand bed
surfaces that would not otherwise be effective on a
solid concrete slab
slab-on-grade a concrete slab cast on the ground surface
subgrade the surface below a slab or below a base
base a granular material placed directly below the slab
a concrete slab containing either WWF, reinforcing
reinforced slab
bars, or fiber
It is determined by the soils engineer after performing
How is the subgrade
a test at the site. The test meaures the load required to
modulus determined?
compress a 30" diameter steel plate 0.05" into the soil
