MN Contractors Exam Prep Quiz

MN Contractors Exam Prep Quiz

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Additional questions to prepare for the MN contractors exam

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1. Fire-retardant-treated wood, when used in roof construction, shall have a maximum
listed flame spread index of _______________.

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2. End-jointed lumber used in an assembly required by the IRC to have a fire resistance
rating must have the designation _______________ included in its grade mark.

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3. Where a permanent wood foundation basement wall system is used, the wall shall be
supported by a minimum _______________ footing plate resting on gravel or
crushed stone fill a minimum of _______________ in width.

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4. What is the minimum total net free ventilating area required for a 1,500-square-foot
attic space where 75 percent of the required ventilation area is provided by ventilators
located in the upper portion of the attic space?

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5. Smoothing to fill in the hollows and compact concrete is defined as.

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6. In an asphalt shingle roof application, step flashing on a sidewall shall be a minimum
of _______________ inches high and _______________ inches wide.

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7. On a masonry chimney what is the minimum thickness for a hearth extension?

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8. According to ASTM E 283-E what is the maximum allowed air leakage rate for recessed lights?

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9. Where floor joists frame from opposite sides across the top of a wood girder and are
lapped, the minimum lap shall be _______________.

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10. For a remodeling project what is the minimum warranty requirement for the mechanical system?

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11. Where unfaced fiberglass batt insulation is used as a fireblocking material in the
wall cavity of a wood stud wall system, the insulation shall be installed with a minimum
vertical height of _______________ .

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12. The commissioner may issue a penalty of up to ___________for each violation of applicable laws

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13. A contractor must warranty their work for the required time unless...

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14. The minimum window SHGC for climate zone 6 is...

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15. What is the maximum center-to-center stud spacing permitted for a 2-inch by
6-inch, 8-foot-high wood stud bearing wall supporting two floors, roof and ceiling?

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16. In wood wall framing where top and bottom plates are attached to the studs, which
of the following fastening methods is acceptable?

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17. In order to use the prescriptive method  for simplified wind loads of the 2020 MN Residential Code the building must meet the following requirements except.

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18. If there is a conflict in the code between a general requirement and a specific requirement,
the _______________ requirement shall apply.

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19. A sketch is defined as...

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20. When natural ventilation is used to satisfy the minimum ventilation requirements for
habitable rooms, the aggregate open area to the outdoors shall be a minimum of
_______________ of the floor area.

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21. Deck joists for wood-framed exterior decks are permitted to cantilever a maximum of
__________ of the joist span.

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22. An Exterior Insulation Finish System (EIFS) shall terminate a minimum of
_______________ above the finished ground level.

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23. For homes that are 400 sq feet or less What is the maximum distance between the loft and an egress window?

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24. Setting goals, analyzing results and controling costs are part of...

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25. Unless grading is prohibited by physical barriers, lots shall be graded away from the
foundation with a minimum fall of _______________ within the first

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26. The minimum offset for end joints in a double top plate shall be _______________.

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27. Where waterproofing of a masonry foundation wall is necessary due to the presence
of a high water table, a minimum membrane thickness of _______________ is
required if the waterproofing material is polymer-modified asphalt.

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28. In order to better market your construction company you change the business name. How many days do you have to inform the commissioner?

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29. If an individual or business submits an invoice with materials and time itemized on the bill the entity is considered a

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30. Timely renewal of a contractors license is when applications are received by_____ every other year

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31. A 15-inch-deep box header in an exterior wall is constructed with wood structural
panels on both sides. What is the maximum allowable header span for a condition
where the header supports a clear-span roof truss with a span of 26 feet?

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32. All contractors in Minnesota must register with the Department of Labor except...

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33. A weep screed installed on exterior stud walls in an exterior plaster application
must be placed a minimum of _______________ inch(es) above paved areas.

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34. The water-resistive vapor permeable barrier required to be applied over wood-based
wall sheathing shall have a performance level equivalent to that of _______________
layer(s) of Grade _______________ paper.

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35. Where ledgers are used at the connection between a masonry wall and a wood floor
system having floor joists spanning 16 feet, 1/2-inch ledger bolts shall be located at a
maximum of _______________ on center, provided the building is in Seismic
Design Category A, B or C and the wind loads are less than 30 psf.

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36. Where a masonry chimney is constructed totally outside the exterior walls of a dwelling,
a minimum air space clearance to combustibles of _______________ is required.

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37. The minimum distance from a window for a radon vent pipe is...

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38. Holes bored into solid lumber joists, rafter and beams shall be located a minimum of
_______________ from the top or bottom of the member.

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39. A permit for a temporary structure is limited as to time of service, but shall not be
allowed for more than _______________ days.

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40. The minimum insurance requirements for property damage is

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41. A contractor has a contract to remodel their clients bathroom. In order for a contractor to have lein rights. The contractor must...

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42. Construction documents are required to have all of the following information except.

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43. What is the minimum required width and thickness for concrete footings supporting
light-frame construction for a two-story 32-foot-wide house with a crawl space, in a
locale with a 30 psf snow load and soil with a load-bearing value of 2000?

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44. What is the minimum STC rating for walls and ceilings between dwelling units?

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45. Where the ground snow load is 30 psf, what is the maximum allowable span of a
built-up spruce-pine-fir girder consisting of three 2 by 12s when it is located at an
exterior bearing wall and supports a roof, a ceiling and one center-bearing floor in a
building having a width of 24 feet?

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46. The ultimate design wind speed to be used for a majority of the United States is
_______________.

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47. The net free area of a spark arrester for a masonry chimney shall be a minimum of
_______________ time(s) the net free area of the outlet of the chimney flue it serves.

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48. In general, the minimum required ceiling height of all habitable rooms is
_______________.

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49. Where an unvented conditioned attic assembly is utilized for a residence, the use of
wood shakes on the roof would require a minimum continuous _______________ -
inch vented air space between the shakes and the roofing felt.

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50. In order to create an educated and unbiased resolution board. The membership of the board of appeals _______________.

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51. Utility grade studs, where used in loadbearing walls supporting only a roof and a
ceiling, shall have a maximum height of _______________ feet.

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52. For tapersawn shakes installed on a roof, the spacing between wood shakes shall be a
minimum of _______________ and a maximum of _______________.

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53. To be an independent contractor in Minnesota and not an employee you must abide by the following except.

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54. When installing an ERV in a new house the HVAC contractor must balance the intake within ____ of the exhaust

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55. A warranty on a remodeling project starts when...

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56. In Minnesota's climate what is the maximum number of air changes per hour allowed?

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57. Which of the following standards is applicable for factory-built fireplaces?

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58. Where an exterior wall top plate is notched to the extent that a metal tie is required
across the opening, the tie shall be fastened to the plate at each side of the opening
with a minimum of _______________10d nails at each side, or equivalent.

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59. The certificate of occupancy shall contain all of the following information except:

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60. The maximum amout paid out by the contractor recovery fund is $___________ per homeowner, $__________ per year and $____________per license.

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61. Double underlayment is required for an asphalt shingle application where the roof has
a slope of up to _______________ .

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62. Unless local conditions warrant otherwise, what is the probability for termite infestation
for dwellings constructed in most of Minnesota?

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63. To be considered a valid construction contract in Minnesota each and every contract must include...

Page 491 R1001.2

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64. The footing for a masonry fireplace and chimney shall be a minimum of...

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65. Where supporting only a light-frame exterior bearing wall and roof, what is the maximum
cantilever span for 2 by 10 floor joists spaced at 16 inches on center, provided
the roof has a width of 32 feet and the ground snow load is 30 psf?

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66. What is the wind design speed for Minnesota

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67. Where SPF #2 ceiling joists create an uninhabitable attic without storage and are
spaced 24 inches on center, what is the maximum allowable span when 2-inch by 6-
inch members are used?

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68. A purpose of the contractor recovery fund is to

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69. Any contractor disturbing more than 20 sq ft of lead based paint on the exterior of the house must...

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70. For a tiny house what is the minimum loft floor area?

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71. When marketing your construction business, your license number needs to be displayed on...

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72. A series of tasks that controls the start and finish dates of a project is called

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73. What wind exposure category is appropriate for a dwelling located in a residential
development in a suburban area?

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74. Where reinforcement is provided in concrete slab-on-ground floors, the reinforcement
shall be supported to remain within what section of the slab during the concrete
placement?Where reinforcement is provided in concrete slab-on-ground floors, the reinforcement
shall be supported to remain within what section of the slab during the concrete
placement?

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75. A driveway needs 6 cubic yards of concrete and is 40'-3" long and 96" wide. What will the thickness of the driveway be?

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76. A homeowner discovers a potential warranty issue after the contractor finishes the remodeling project. How many months from discovery does the homeowner have to notify the contractor of the issue?

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77. Overflow scuppers utilized for secondary roof drainage shall have a minimum
size_______________ of the roof drain.

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78. The minimum thickness of a soil-gas membrane is _____mil polyethylene.

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79. Glazing adjacent to a door to a storage closet is not required to be safety glazing provided
the closet is a maximum of _______________ in depth.

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80. What is the minimum insulation requirement for a wood foundation?

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81. A homeowner signs a contract for a contractor to remodel their kitchen. In order for the contractor to have lien rights the contractor must...

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82. Violation of the building code is a...

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83. What is the amount of concrete needed to install a patio that is 14'-6" wide by 16'-4" long and 4" thick?

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84. Within a shower compartment, the walls shall be finished with a nonabsorbent surface
to a minimum height of _______________.

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85. If a contractor fails to correct a violation the forgivable portion of a penalty will be due and payable with _______days.

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86. Horizontal insulation used in a frost protected shallow foundation system shall be
protected against damage if it is located less than _______________ inches below the
ground surface.

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87. Concrete is made from gravel, water, portland cement and...

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88. ACI 318-14 is a reference standard addressing _______________.

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89. In the attachment of asphalt shingles, special methods of fastening as established by
the manufacturer are required where the roof slope of _______________ is exceeded.

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90. Permits are not required for...

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91. Screws attaching floor sheathing to cold-formed steel joists shall be installed with a
minimum edge distance of __________ inch.

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92. Where masonry veneer is used, concrete and masonry foundations shall extend a
minimum of _______________ above adjacent finished grade.

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93. A permit is not required for the construction of a one-story detached accessory structure
when it has a maximum floor area of _______________ square feet.

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94. The ends of floor joists shall bear a minimum of _______________ on wood or
metal.

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95. Where the hearth extension for a masonry fireplace is located at the same level as the
bottom of the firebox opening, the minimum required thickness of the hearth extension
is _______________ inches.

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96. For new construction what is the minimum warranty requirement for a structural issue?

MN Statute 326B.802 Subd 11

"Residential building contractor" means a person in the business of building residential real estate...

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97. A residentail building contractor license allows all of the following except.

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98. Screws for attaching gypsum board to wood framing shall penetrate the wood a
minimum of _______________.

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99. Wood structural panels 15/32-inch thick are to be used as subfloor sheathing and are to
be covered with 3/4-inch wood finish flooring installed at right angles to the joists.
What is the maximum allowable span of the wood structural panels if the span rating
of the panels is 32/16?

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100. It is the duty of the _______________ to notify the building official that work is
ready for inspection.

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101. A residential licensed contractor is required to have ____hours of continuing education every 2 years

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102. The continuous vapor barrier required in an unvented crawl space shall extend a minimum
of _______________ inches up the stem wall.

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103. Where a steel fireplace unit incorporating a steel firebox lining is installed with solid
masonry to form a masonry fireplace, it shall be constructed with minimum
_______________-inch steel.

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104. If a contractor fails to make payment for labor, skill, materials or machinery for which a client has provided money for. The contractor is guilty of...

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105. Construction documents are required to include all of the following except.

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106. Mortar is made with all of the following except.

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107. Emergency escape and rescue openings, when considered as grade floor openings,
shall have a minimum net clear opening of _______________.

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108. HVAC ductwork installed in a garage must have a minimum insulation value of?

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109. When 1/2-inch gypsum board is used as an interior wall covering and installed perpendicular
to framing members at 16 inches on center, the maximum spacing of
nails is _______________ on center where adhesive is used.

Page 5

1300.0110

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110. The building official has the authority to _______________ the provisions of the
code.

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111. The ______________ is authorized and
directed to enforce the provisions of this code.

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112. Grounds for sanctions include all of the following except

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113. In all cases, a masonry chimney shall extend a minimum of _______________ above
the highest point where the chimney passes through the roof.

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114. An individual is exempt from Workers Compensation if they are a spouse, parent or _____of an excutive officer of a closely held corporation

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115. A roof projection on a dwelling shall be located a minimum of _______________
from an interior lot line.

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116. When two or more flues are located in the same masonry chimney, they shall be separated
by masonry wythes having a minimum thickness of _______________.

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117. The minimum footing depth for Olmstead county is...

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118. When paying wages to an employee an employer is commiting fraud if the following are done except

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119. Wood studs shall have a minimum clearance of _______________ from the back
face of a masonry fireplace.

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120. Where required on an asphalt-shingled roof of 5:12 slope, an ice barrier shall
extend from the lowest edges of the roof surfaces to a minimum of
_______________ inches inside the exterior wall line of the building.

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121. When waterproofing a foundation wall. The waterproofing material must extend from the top interior wall edge,

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122. The elements of a drawing are lines, dimensions, views and...

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123. What is the minimum required size of a hearth extension for a masonry fireplace having
a 30-inch-high by 42-inch-wide fireplace opening?

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124. What is the minimum required size of a steel angle spanning 8 feet used as a lintel
supporting one story of masonry veneer above?

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125. Access to an under-floor space through a perimeter wall shall be provided by a minimum
_______________ access opening.

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126. Concrete used in a basement slab shall have a minimum compressive strength of
_______________ where a severe weathering potential exists.

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127. An exterior wood deck may be constructed of all of the following except...

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128. For rooms other than sleeping rooms, what is the minimum uniformly distributed live
load that is to be used for the design of the floor system?

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129. An individual must pay the commission a license re-instatment fee of _____after revocation, suspension or voluntary termination of their contractors license.

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130. What is the maximum oversizing of heating and A/C equipment?

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131. Water-resistant gypsum board shall not be installed over which of the following
classifications of vapor retarders when located in a tub or shower compartment?

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132. The commissioner may issue a notice of violation to__________in regards to violation of an applicable law.

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133. A contractor has ____days after the completion of the project to file a lien notice.

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134. A radon control system is required to be install when...

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135. Where located less than 5 feet above the walking surface, glazing in a wall enclosing
an outdoor hot tub shall be considered to be installed in a hazardous location unless
the glazing is a minimum of _______________ horizontally from the water’s edge.

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136. Where 15/32-inch wood structural panels having a span rating of 32/16 are used as roof
sheathing, what is the maximum span without edge support?

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137. In a situation where a residential contractor losses its qualifing person, how many days does it have to replace the qualifing person before termination of the license?

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138. Lein rights with respect to real esate only applies to...

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139. On a site having expansive soil, roof drainage water shall discharge a minimum of
_______________ feet from the foundation walls or to an approved drainage system.

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140. 1/4 scale is defined as.

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141. The ground snow load for Goodhue county is...

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142. Where the cantilevered portion of a rafter is notched, a minimum of
_______________ inches of the member depth must remain.

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143. Except for Rumford fireplaces, the firebox of a masonry fireplace shall have a minimum
depth of _______________ inches.

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144. Nails used to attach concrete roof tiles to the roof deck shall penetrate the deck a
minimum of _______________ or through the thickness of the deck, whichever is
less.

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145. In a 24" O.C. steel framed wall with an insulation value of R19+10.1. What is the wood framed wall equivilant?

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146. Where 3/8-inch particleboard is used as an exterior wall covering, what type of fasteners
are required if the particleboard is attached directly to the studs?

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147. A curtain wall is defined as...

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148. Unless specifically approved, what is the maximum slump permitted for concrete
placed in removable foundation wall forms?

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149. A roof system is subjected to a 50 psf ground snow load and creates a dead load of 20
psf. The ceiling is not attached to the rafters. Assuming that rafter ties are provided at
the top plate line, what is the maximum span of 2-inch by 8-inch Hem-Fir #1 rafters
spaced at 24 inches on center?

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150. What wind exposure category is appropriate for a dwelling located in a residential
development in a suburban area?

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151. The maximum pay period for salaries earned is...

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152. Openings provided for roof ventilation, where covered with corrosion-resistant wire
cloth screening, shall have openings a minimum of _______________ and a maximum
of _______________.

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153. A minimum design live load of _______________ shall be used for the determination
of the maximum allowable floor joist spans in attics that are accessed by a fixed stairway.

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154. In a nonbearing partition, a wood stud may be notched a maximum of
_______________.

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155. The illumination source for interior stairs shall be capable of illuminating the treads
and landings to a minimum level of _______________ foot-candle(s).

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