ICC Masonry Exam questions with correct answers
Which of the following is the standard specification for loadbearing concrete masonry units?
CORRECT ANSWER ASTM C 90; RCMCI 6th Edition, Section 2.2.1
Which of the following grout admixtures is used to obtain a high slump with reduced water?
CORRECT ANSWER Super plasticizer; RCMCI 6th Edition, Section 2.11.6
Which of the following is the standard specification that autoclaved aerated concrete masonry
units must conform to for the strength class specified in the contract documents? CORRECT
ANSWER ASTM C 1386; CI 530; Part 2, Section 2.3E. IBC 2103.3
Grout intended for use in the construction of engineered and empirically designed masonry
structures must comply with CORRECT ANSWER ASTM C 476; 2006 IBC 2103.12
The slump test for grout must be performed in accordance with CORRECT ANSWER ASTM C
1019; ASTM - C1019-03
In what condition are grout specimens to be tested? CORRECT ANSWER Damp; ASTM - 1019-03
When the prism test method is being utilized, how long must the prisms cure prior to being
cut? CORRECT ANSWER 28; 2006 IBC 2105.3.1
After construction and grouting, masonry test prisms should not be disturbed or moved for a
minimum of CORRECT ANSWER 48 hours; ASTM - C 1314, Section 5.10
When field sampling grout, the elapsed time between obtaining the first and final portions of
the sample shall not be more than CORRECT ANSWER 15 minutes; ASTM - C1019, Section 7.2.1
If mortar compression tests are required, how many tests per day are to be taken for the three
successive work days at the start of the job? CORRECT ANSWER 1; RCMCI 6th Edition, 3.2.4
, Glass unit masonry shall not be laid at temperatures below CORRECT ANSWER 60 degrees F;
2006 IBC 2104.3.2.1
What is the maximum mean daily temperature permitted before newly constructed masonry
must be fog sprayed during curing? CORRECT ANSWER 100 degrees F; 2006 IBC 2104.4.3
When the temperature is below 40 degrees F, newly constructed masonry must be covered
with a weather resistant membrane for a minimum of CORRECT ANSWER 24 hours; 2006 IBC
2104.3.3.3
After initial mixing, when the ambient temperature exceeds 90 degrees F with a wind velocity
over 8 mph, mortar used in masonry construction must be discarded after CORRECT ANSWER 2
hours; 2006 IBC 2104.4.2.1
Which type of unit masonry is required to be placed with head and bed joints solidly filled?
CORRECT ANSWER Glass; 2006 IBC 2104.1.2.4
Thin bed mortar joints used in laying autoclaved aerated concrete masonry units shall not
exceed a thickness of CORRECT ANSWER 1/16"; 2006 IBC 2104.1.2.6
When the ambient temperature exceeds 100 degrees F or exceeds 90 degrees F with a wind
velocity over 8 mph, what is the maximum distance that mortar may be spread ahead of AAC
masonry units? CORRECT ANSWER 4'; RCMCI 6th Edition, Section 11.2.4, 2006 IBC
2104.4.2.1(5).
What is the maximum spacing for weep holes placed in the outside wythe of masonry walls?
CORRECT ANSWER 33" on center; 2006 IBC 2104.1.8
The maximum corbeled projection beyond the face of the wall for multiwythe walls bonded by
mortar or grout, and wall ties or masonry headers is CORRECT ANSWER 1/2 the wall thickness;
2006 IBC 2104.2
Which of the following is the standard specification for loadbearing concrete masonry units?
CORRECT ANSWER ASTM C 90; RCMCI 6th Edition, Section 2.2.1
Which of the following grout admixtures is used to obtain a high slump with reduced water?
CORRECT ANSWER Super plasticizer; RCMCI 6th Edition, Section 2.11.6
Which of the following is the standard specification that autoclaved aerated concrete masonry
units must conform to for the strength class specified in the contract documents? CORRECT
ANSWER ASTM C 1386; CI 530; Part 2, Section 2.3E. IBC 2103.3
Grout intended for use in the construction of engineered and empirically designed masonry
structures must comply with CORRECT ANSWER ASTM C 476; 2006 IBC 2103.12
The slump test for grout must be performed in accordance with CORRECT ANSWER ASTM C
1019; ASTM - C1019-03
In what condition are grout specimens to be tested? CORRECT ANSWER Damp; ASTM - 1019-03
When the prism test method is being utilized, how long must the prisms cure prior to being
cut? CORRECT ANSWER 28; 2006 IBC 2105.3.1
After construction and grouting, masonry test prisms should not be disturbed or moved for a
minimum of CORRECT ANSWER 48 hours; ASTM - C 1314, Section 5.10
When field sampling grout, the elapsed time between obtaining the first and final portions of
the sample shall not be more than CORRECT ANSWER 15 minutes; ASTM - C1019, Section 7.2.1
If mortar compression tests are required, how many tests per day are to be taken for the three
successive work days at the start of the job? CORRECT ANSWER 1; RCMCI 6th Edition, 3.2.4
, Glass unit masonry shall not be laid at temperatures below CORRECT ANSWER 60 degrees F;
2006 IBC 2104.3.2.1
What is the maximum mean daily temperature permitted before newly constructed masonry
must be fog sprayed during curing? CORRECT ANSWER 100 degrees F; 2006 IBC 2104.4.3
When the temperature is below 40 degrees F, newly constructed masonry must be covered
with a weather resistant membrane for a minimum of CORRECT ANSWER 24 hours; 2006 IBC
2104.3.3.3
After initial mixing, when the ambient temperature exceeds 90 degrees F with a wind velocity
over 8 mph, mortar used in masonry construction must be discarded after CORRECT ANSWER 2
hours; 2006 IBC 2104.4.2.1
Which type of unit masonry is required to be placed with head and bed joints solidly filled?
CORRECT ANSWER Glass; 2006 IBC 2104.1.2.4
Thin bed mortar joints used in laying autoclaved aerated concrete masonry units shall not
exceed a thickness of CORRECT ANSWER 1/16"; 2006 IBC 2104.1.2.6
When the ambient temperature exceeds 100 degrees F or exceeds 90 degrees F with a wind
velocity over 8 mph, what is the maximum distance that mortar may be spread ahead of AAC
masonry units? CORRECT ANSWER 4'; RCMCI 6th Edition, Section 11.2.4, 2006 IBC
2104.4.2.1(5).
What is the maximum spacing for weep holes placed in the outside wythe of masonry walls?
CORRECT ANSWER 33" on center; 2006 IBC 2104.1.8
The maximum corbeled projection beyond the face of the wall for multiwythe walls bonded by
mortar or grout, and wall ties or masonry headers is CORRECT ANSWER 1/2 the wall thickness;
2006 IBC 2104.2
