Spray applied Fireproofing 1b

What is the minimum required bond strength for SFRM ?

• 150 lbs. sq./ft.

• 250 lbs

• 2500 lbs

Answer explanation

IBC

1705.15.6

BOND STRENGTH:

............shall not be less than 150 pounds per square foot..........

According to MANUAL 12A , what is the minimum ambient and substrate temperature required ?

• 40^o degrees F

• 50 f

• 45 f

Answer explanation

12A

3.2.2

TEMPERATURE:

A minimum ambient and substrate temperature of 40^o F shall maintained during and for a minimum of 24 hrs after the application of the SFRM.......

How many individual thickness measurements should be taken total on a TRUSS ?

• 14 total

  ( 7 + 7 )

• 10 total

• 8 total

Answer explanation

IBC

1705.15.4.7

JOIST and TRUSSES:

....thickness measurements shall be made at SEVEN locations...........

If a project had 6000 ft² of floor area on each floor & STRUCTURAL member receiving SFRM were just the COLUMNS & BEAMS , how many bond tests need to be performed on the STRUCTURAL members on each floor ?

• 6 total

  3 columns

  3 beams

• 4 total

• 8 total

Answer explanation

IBC

1705.15.6.2

STRUCTURAL members:

...........shall be selected from beams, girders, trusses, COLUMNS, and other structural members at the rate of not less than ONE SAMPLE for each type of structural member for each 2,500 square feet of the sprayed area, or portion thereof , in each story

When performing COHESION BOND test on SFRM, what is the minimum area for the bond specimen ?

• 4^in. x 12^in.

• 3 in x 12 in

• 12 x 12 inches

Answer explanation

12A

5.5.5

METHODOLOGY:

A 12-in. square area shall be selected at the predetermined location. Where an area of the size is not available , the specimen shall be no less than 4 in. x 12 in.

According to the IBC, how many DENSITY samples should be obtained for 1 level with 9000 sq.ft. of floor area where the COLUMNS , BEAMS and DECKING are receiving fireproofing ?

• 12 *

• 1

• 8

Answer explanation

IBC

1705.15.5

1, 2

DENSITY:

1. 1. From ea. FLOOR , ROOF & WALL assembly at the rate of not less than ONE sample of every 2,500 square feet or portion thereof of the sprayed area in each story

2. 2. From BEAMS, GIRDERS and COLUMNS at the rate of not less than ONE sample for each type of STRUCTURAL member for each 2,500 square feet of floor area or portion thereof of ea. story

What is the minimum allowable individual thickness measurement if the specified thickness is 5/8 inch ?

• 15/32^nd of and INCH

• 9/16

• 1/2

Answer explanation

IBC

1705.15

.4.1

MINIMUM ALLOWABLE THICKNESS:

............For design thickness less than 1 inch the minimum allowable individual thickness shall be the design of thickness minus 25 %

According to MANUAL 12A , unless specifically prohibited in the fire resistance rating design criteria , SFRM is permitted to be applied to a WIDE FLANGE COLUMN as long as.....

• The COLUMN FLANGE width does not exceed

  16 inches

• does not exceed 16 ft.

• does not exceed 12 in.

Answer explanation

12A

3.2

PRIMER , PAINTS & ENCAPSULANTS:

1B.

The COLUMN FLANGE width does not exceed 16 in.

For SFRM if conditions 3.2.1D is not met for painted or primed STRUCTURAL members, it shall be acceptable to provide a.....

• MECHANICAL BOND

• bond strength

• bond tests to qualify

Answer explanation

12A

3.2.1.1

PRIMER , PAINTS & ENCAPSULANT BOND TESTS.

If condition 3.2.1.D is not met, it shall be acceptable to provide a MECHANICAL BOND by wrapping the STRUCTURAL member with expanded metal lath.....................