NCARB ARE CDS 2 Questions With
Complete Solutions
Lateral forces From horizontal force of soils, wind, earthquakes.
Section from winds Winds create section on most roof surfaces and on leeward walls.
Torsion Variations in the strength or stiffness of the perimeter frame or wall structure
cau...
Lateral forces From horizontal force of soils, wind, earthquakes.
Section from winds Winds create section on most roof surfaces and on leeward walls.
Torsion Variations in the strength or stiffness of the perimeter frame or wall structure
causes torsion in a building during earthquakes. Can be alleviated by adding sheer walls or
stiffening the frame with bracing or additional columns.
Stiff core Should not be located asymmetrically in a building. If it is, should be
disconnected from the rest of the structure to prevent it from inducing torsional forces into the
structure.
Notches or reentrant corners Concentrate stresses, the building should be structurally
separated into two or more uniform elements if these exist.
Soft story An elevated first floor on pilotis. Bracing columns at the first story or
increasing the number of columns to stiffen that level will alleviate the problem.
, NCARB ARE CDS 2 Questions With
Complete Solutions
Structure should act as a unit Building should be as uniform in configuration in stiffness
as possible. Connections should allow building to act as a unit.
Dry flood proofing Utilize water resistant materials in ceilings to prevent waters from
entering the building and keep the interiors dry.
Wet flood proofing Allows water to penetrate buildings. When floodwaters recede
standing water is pumped out. Requires water sensitive materials to be located above flood
levels.
Sloops roofs Roofs with a pitch over 4 to 12 have fewer problems than flat or slightly
sloped roofs.
Flat surfaces Difficult to waterproof. Should have a minimum slope to drain of one
quarter inch per foot to avoid standing ponds of water.
Roof manufacturers warranties May reserve the right to approve the roofing contractor,
provide representative to inspect the installation and provide technical assistance. Manufacturers
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