Cr21 practice Questions With Complete Solutions
What is the maximum distance between expansion joints of a 6
foot masonry wall 50 feet long ?
16 feet
The infiltration characteristics of the soil depends on the slope of
the surface and the :
density of the soil .
How deep should a post be placed in the ground if no concrete is
used ?
below the frost line
What is the maximum allowable crack in an expansion joint
3/8 inch
How deep should screws penetrate wood studs when applying
veneer plaster ?
5/8 inch
How is total surge pressure calculated ?
Surge pressure caused by a closing valve plus working pressure
in the pipeline
How deep should screws penetrate wood studs when applying
veneer plaster ?
5/8 inch
What is the preferred method for plastering on masonry ?
, 3 coats
How long do you need to wait before setting the second course
on the base ?
1 hour
" Weep holes " may be utilized in which of the following
methods of change in site grading ?
retaining walls
What effect does higher pressure have on wire size ?
increases amps needed
What is the minimum thickness of the exterior wall of a
fireplace ?
8 inches
Most pressure type vacuum breakers are installed what
minimum distance above the highest outlet ?
12 inches
After the scratch coat of Portland cement mortar is applied and
scored , it should be set and cured for at least :
two days
How far apart should wood planks be installed for expansion ?
1/8 to 1/4 inch
What is the maximum pressure variance for drip line emitters ?
20 %
What is the maximum distance between expansion joints of a 6
foot masonry wall 50 feet long ?
16 feet
The infiltration characteristics of the soil depends on the slope of
the surface and the :
density of the soil .
How deep should a post be placed in the ground if no concrete is
used ?
below the frost line
What is the maximum allowable crack in an expansion joint
3/8 inch
How deep should screws penetrate wood studs when applying
veneer plaster ?
5/8 inch
How is total surge pressure calculated ?
Surge pressure caused by a closing valve plus working pressure
in the pipeline
How deep should screws penetrate wood studs when applying
veneer plaster ?
5/8 inch
What is the preferred method for plastering on masonry ?
, 3 coats
How long do you need to wait before setting the second course
on the base ?
1 hour
" Weep holes " may be utilized in which of the following
methods of change in site grading ?
retaining walls
What effect does higher pressure have on wire size ?
increases amps needed
What is the minimum thickness of the exterior wall of a
fireplace ?
8 inches
Most pressure type vacuum breakers are installed what
minimum distance above the highest outlet ?
12 inches
After the scratch coat of Portland cement mortar is applied and
scored , it should be set and cured for at least :
two days
How far apart should wood planks be installed for expansion ?
1/8 to 1/4 inch
What is the maximum pressure variance for drip line emitters ?
20 %
