Which of the following is the standard specification for loadbearing concrete masonry units? -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? -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? -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 -Answer- ASTM C 476; 2006 IBC 2103.12 The slump test for grout must be performed in accordance with -Answer- ASTM C 1019; ASTM - C1019-03 In what condition are grout specimens to be tested? -Answer- Damp; ASTM - 1019-03 When the prism test method is being utilized, how long must the prisms cure prior to being cut? -Answer- 28; 2006 IBC 2105.3.1 After construction and grouting, masonry test prisms should not be disturbed or moved for a minimum of -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 -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? -Answer- 1; RCMCI 6th Edition, 3.2.4 Glass unit masonry shall not be laid at temperatures below -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? -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 -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 -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? -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 -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? -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? -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 -Answer- 1/2 the wall thickness; 2006 IBC 2104.2 The maximum spacing of movement joints is -Answer- 25' or three times the wall height; ACI 530 In masonry construction, what type of joint is used to allow dimensional changes in masonry, minimize random wall cracks and other distress? -Answer- Movement joint; ACI 530 In masonry construction, what is the maximum tolerance permitted for vertical alignment of nonbearing columns and walls? -Answer- +/- 3/4"; ACI 530, S21, Section 3.3G (2) (d) Which type of mortar is used for placing adhered masonry veneer? -Answer- Type S; ACI 530, S-2O, Section 3.3C (2) What is the minimum thickness required for parapet walls of masonry construction? -Answer- 8"; 2006 IBC 2109.5.2.6. The minimum thickness of masonry shear walls shall be -Answer- 8"; 2006 IBC 2109.5.2.6. The minimum length of lap for bars in tension or compression shall be not less than -Answer- 12"; RGBM 14th Edition, Section 5.13 What is the maximum distance apart permitted for reinforcing bars spliced together by use of the noncontact lap method? -Answer- 8"; RGBM 14th Edition, Section 5.13 What is the maximum spacing of crosswires in ladder-type joint reinforcement and point of connection of crosswires to longitudinal wires of truss-type reinforecement? -Answer- 16"; 2006 IBC 2103.13.2 What is the minimum distance that wire wall ties must be embedded into the mortar bed of solid masonry units or solid-grouted hollow units? -Answer- 1 1/2"; 2006 IBC 2104.1.3