Back4.1.8.17.(6)

ATTRIBUTION:

Functional Statement:

F20

To support and withstand expected loads and forces.

F22

To limit movement under expected loads and forces.

Objective:

OS2.1

 

APPLICATION:

Determination of the storey seismic lateral forces where floors or roofs support a tank whose mass, including contents, is greater than 10% of the mass of the floor or roof, in areas where IEFaSa(0.2) is equal to or greater than 0.35 or in post-disaster buildings.
This applies to buildings described in Sentence 1.3.3.2.(1) of Division A and to buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9] that are required to be designed in accordance with the requirements of Part 4.

INTENT:

To limit the probability that the inertial seismic force applied by a tank to the building structure for structural design will not take into account the dynamic response of the tank containing liquid when subjected to the maximum expected seismic building motions, which could lead to structural failure, which could lead to harm to persons.

ATTRIBUTION:

Functional Statement:

F20

To support and withstand expected loads and forces.

F22

To limit movement under expected loads and forces.

Objective:

OP2.1, OP2.4

 

APPLICATION:

Determination of the storey seismic lateral forces where floors or roofs support a tank whose mass, including contents, is greater than 10% of the mass of the floor or roof, in areas where IEFaSa(0.2) is equal to or greater than 0.35 or in post-disaster buildings.
This applies to buildings described in Sentence 1.3.3.2.(1) of Division A and to buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9] that are required to be designed in accordance with the requirements of Part 4.

INTENT:

To limit the probability that the inertial seismic force applied by a tank to the building structure for structural design will not take into account the dynamic response of the tank containing liquid when subjected to the maximum expected seismic building motions, which could lead to:
  • the excessive deformation of, or excessive stress in, the structural elements, which could lead to damage to the building, or
  • the excessive deformation of, or excessive stress in, the building structure, which could lead to damage to the building, which could impede the intended use and occupancy of the building.