ICC REINFORCED CONCRETE Q & A
An acceptable reinforcing steel support mechanism for a 24-inch deep footing are?
-precast dobie blocks
-large,solid pieces of glass
-masonry CMU pieces
-wooden blocks - Correct Answer - Precast dobie blocks
all of the following are true except ?
---Minimum concrete cover for bundled bars of any size need not be greater than 2 inches,
unless they are in a member that's permanently cast against earth
---specified concrete cover for headed shear stud reinforcement shall not be less then the cover
requirement for the member in which the stud reinforcement is located
---Concrete cover for the flexural members, walls, and compression members with an effective
depth of 8-inches can vary -3/8 of an inch
---Concrete cover for members in highly corrosive environments will typically remain the same
as cast against earth - Correct Answer - Concrete cover for members in highly corrosive
environments will typically remain the same as cast agonist earth
As a general rule, Lap splicing bar larger then NO.11 Is?
-not permitted
-permitted
-permitted if bars will be in tension within the structural member
-permitted only if bars are within a bundle - Correct Answer - not permitted
before new concrete is placed, construction joints must be?
-blown free of dirt and debris
-wetted ,and standing water removed
-sand blasted
- treated with a bonding agent - Correct Answer - wetted, and standing water removed
grade 60 reinforcing steel has an ultimate strength of?
-60,000
-75,000
-90,000
-100,000 - Correct Answer - 90,000 psi
The__________may waive requirements for the employment of a special inspection agency if
he/she finds that the construction is of minor nature.
-building official
-engineer or architect of record
-owner
-all of the above - Correct Answer - building official
, what is the maximum allowable center to center spacing of spliced bars in a non-contact lap
splice for the flexural members?
-6 inches
-4 inches
-8 inches
-2 inches - Correct Answer - 6 inches
Drilled cast-in place concrete piles that poured with concrete having an f'c of 2500 psi need
special inspection?
-only when required by the building official
-at the engineers discretion
-at all times
-when poured with concrete having an air entrainment greater then 3% - Correct Answer - at all
times
The type of portland cement best suited for general use when a moderate heat of hydration is
desired is
- Type I
- Type II
- Type III
- Type V - Correct Answer - Type II
Concrete containing pre-stressed tendons, embedded aluminum, or cast against stay in place
galvanized steel forms shall not contain?
-lightweight aggregates
-pozzolans in excess of 5%
-fly ash in excess of 10%
-calcium chloride - Correct Answer - calcium chloride
billet steel bars are marked by the letter_________on the bars.
-S
-N
-A
-W - Correct Answer - S
Concrete exposed to water with low permeability requirements shall have a maximum w/c ratio
of?
-0.4
-0.45
-0.5
-N/A - Correct Answer - 0.5
An acceptable reinforcing steel support mechanism for a 24-inch deep footing are?
-precast dobie blocks
-large,solid pieces of glass
-masonry CMU pieces
-wooden blocks - Correct Answer - Precast dobie blocks
all of the following are true except ?
---Minimum concrete cover for bundled bars of any size need not be greater than 2 inches,
unless they are in a member that's permanently cast against earth
---specified concrete cover for headed shear stud reinforcement shall not be less then the cover
requirement for the member in which the stud reinforcement is located
---Concrete cover for the flexural members, walls, and compression members with an effective
depth of 8-inches can vary -3/8 of an inch
---Concrete cover for members in highly corrosive environments will typically remain the same
as cast against earth - Correct Answer - Concrete cover for members in highly corrosive
environments will typically remain the same as cast agonist earth
As a general rule, Lap splicing bar larger then NO.11 Is?
-not permitted
-permitted
-permitted if bars will be in tension within the structural member
-permitted only if bars are within a bundle - Correct Answer - not permitted
before new concrete is placed, construction joints must be?
-blown free of dirt and debris
-wetted ,and standing water removed
-sand blasted
- treated with a bonding agent - Correct Answer - wetted, and standing water removed
grade 60 reinforcing steel has an ultimate strength of?
-60,000
-75,000
-90,000
-100,000 - Correct Answer - 90,000 psi
The__________may waive requirements for the employment of a special inspection agency if
he/she finds that the construction is of minor nature.
-building official
-engineer or architect of record
-owner
-all of the above - Correct Answer - building official
, what is the maximum allowable center to center spacing of spliced bars in a non-contact lap
splice for the flexural members?
-6 inches
-4 inches
-8 inches
-2 inches - Correct Answer - 6 inches
Drilled cast-in place concrete piles that poured with concrete having an f'c of 2500 psi need
special inspection?
-only when required by the building official
-at the engineers discretion
-at all times
-when poured with concrete having an air entrainment greater then 3% - Correct Answer - at all
times
The type of portland cement best suited for general use when a moderate heat of hydration is
desired is
- Type I
- Type II
- Type III
- Type V - Correct Answer - Type II
Concrete containing pre-stressed tendons, embedded aluminum, or cast against stay in place
galvanized steel forms shall not contain?
-lightweight aggregates
-pozzolans in excess of 5%
-fly ash in excess of 10%
-calcium chloride - Correct Answer - calcium chloride
billet steel bars are marked by the letter_________on the bars.
-S
-N
-A
-W - Correct Answer - S
Concrete exposed to water with low permeability requirements shall have a maximum w/c ratio
of?
-0.4
-0.45
-0.5
-N/A - Correct Answer - 0.5
