Taxpayer

Question 1

1938

Answer 1

are exceeding 10,000 square feet ,,,sprinklered

1968–are exceeding 7500 square feet…sprinklered

Question 2

2008 CODE
SPRINKLERED

Answer 2

FULL BUILDING
A. 1 STORE /AREA EXCEEDING 12,000 SQUARE FEET…entire building
B. Combined area on all floors/include mezzanines exceeds 24,000 square feet..
c. high piled racks or rack storage arrays

SINGLE OCCUPANCY
A. AREA EXCEEDING 7500 SQUARE FEET…SPRINKLER THE STORE
B. 3 STORIES ABOVE GRADE
C. AREA OF ANY SIZE LOCATED IN HIGH RISE BUILDING
D. AREA OF ANY SIZE UNENCLOSED STAIR OR ESCALATOR CONNECTING TWO OR MORE FLOORS

Question 3

TRUSS

truss failure can occur without fire impingement

failure of one truss can cause failure of ENTIRE TRUSS

spaced 10-20 feet apart

Answer 3

TOP CHORD
BOTTOM CHORD
WEB IN BETWEEN

WOOD OR STEEL
WOOD SNAPS / STEEL STRETCHES

OPEN WEB PARALLEL CHORD TRUSS…LIGHTWEIGHT TRUSS

BOWSTRING TRUSS
BWSTRG
HUMP LIKE ROOF
LONGER THE SPAN/HIGHER THE BOW
BOTTOM CHORD INADEQUATE TENSIL STRENGTH
SUPPORT 40% OF THE LOAD

Question 4

AXIAL LOAD

Answer 4

STRAIGHT/TRUE/CENTER/PERPENDICULAR

Question 5

SNOW LOAD

Answer 5

ECCENTRIC LOAD/Does not pass thru center/unbalanced /concentrated load

Question 6

live load

Answer 6

ff’s

Question 7

OPEN WEB STEEL JOIST

Answer 7

NO FIRE RESISTIVE RATING…DEPENDS ON CEILING

SPAN DISTANCES UP TO 60 FEET

-COVERED WITH PRECAST CONCRETE /GYPSUM PLANK

-UNPROTECTED AND OPEN 5-10 MINUTES FAIL

Question 8

STABILITY OF MASONRY WALL

Answer 8

depends on integrity of roof
monolithic brace

-concrete hinges

brick crumbles

Question 9

I BEAMS ABSORB HEAT

Answer 9

temp
extent of fire
weight of beam
size of beam

–large / heavy i beam will absorbed more heat and temp will rise slower

–50 ft -970 degrees expands 4 inches
1000 degrees /100 foot i beam 9.5 inches

Cast iron CRACKS/ FAILS

I BEAM can BUCKLE IF UNABLE TO EXPAND

1000-1500 DEGREES SOFTEN AND FAIL, reach this temp 5-10 minutes

COOLING I BEAM CAUSES TO REGAIN STRENGTH