FpForce.net

S_ds g

W_p

Structure Ductility Reduction Factor, R_µ

Ω₀

R_µ

Height Factor, H_f

Supported above grade (period known)

Supported above grade (period unknown)

Supported at or below grade

z ft.

h ft.

T_a sec.

H_f

Component Importance Factor

I_p = 1.0

I_p = 1.5

Component Properties (Click Table to Fill)

C_AR

R_po

Ω_op

Num.	Architectural Component	Below_C_AR	Above_C_AR	R_po	Ω_op
	Interior nonstructural walls and partitions
1	--- Light frame ≤ 9ft (2.74m) in height	1.0	1.0	1.5	1.5
2	--- Light frame > 9ft (2.74m) in height	1.4	1.4	1.5	2.0
3	--- Reinforced Masonry	1.0	1.0	1.5	1.5
4	--- All other walls and partitions	2.0	2.8	1.5	1.5
	Cantilever elements (unbraced or braced to structure below its center of mass)
5	--- Parapets and cantilever interior nonstructural walls	1.8	2.2	1.5	1.75
6	--- Chimneys where laterally braced or supported by the structural frame	1.8	2.2	1.5	1.75
	Cantilever elements (braced to structural frame above its center of mass)
7	--- Parapets	1.0	1.0	1.5	1.5
8	--- Chimneys	1.0	1.0	1.5	1.5
9	--- Exterior nonstructural walls	1.0	1.0	1.5	1.5
	Exterior nonstructural wall elements and connections
10	--- Wall element	1.0	1.0	1.5	1.5
11	--- Body of wall panel connections	1.0	1.0	1.5	1.5
12	--- Fasteners of the connecting system	2.2	2.8	1.5	1.0
	Veneer
13	--- Limited deformability elements and attachments	1.0	1.0	1.5	1.5
14	--- Low deformability elements and attachments	1.0	1.0	1.5	1.5
	Penthouses (except where framed by an extension of the building frame)
15	--- Seismic Force-Resisting Systems with R≥6	N/A	1.4	2.0	2.0
16	--- Seismic Force-Resisting Systems with 6>R≥4	N/A	2.2	2.0	1.75
17	--- Seismic Force-Resisting Systems with R<4	N/A	2.8	2.0	1.5
18	--- Other Systems	N/A	2.8	1.5	1.5
	Ceilings
19	--- All	1.0	1.0	1.5	1.5
	Cabinets
20	--- Permanent floor-supported storage cabinets more than 6 ft (1,829 mm) tall, including contents	1.0	1.0	1.5	1.5
21	--- Permanent floor-supported library shelving, book stacks, and bookshelves more than 6 ft (1,829 mm) tall, including contents	1.0	1.0	1.5	1.5
22	Laboratory equipment	1.0	1.0	1.5	1.5
	Access Floors
23	--- Special access floors (designed in accordance with Section 13.5.7.2)	1.0	1.0	1.5	1.5
24	--- All other	2.2	2.8	1.5	1.5
25	Appendages and ornamentations	1.8	2.2	1.5	1.75
26	Signs and Billboards	1.8	2.2	1.5	1.75
27	Other rigid components	1.0	1.0	1.5	1.5
	Other flexible components
28	--- High-deformability elements and attachments	1.4	1.4	1.5	2.0
29	--- Limited-deformability elements and attachments	1.8	2.2	1.5	1.75
30	--- Low-deformability elements and attachments	2.2	2.8	1.5	1.5
31	Egress stairways not part of the building seismic force-resisting system	1.0	1.0	1.5	1.5
32	Egress stairs and ramp fasteners and attachments	1.8	2.2	1.5	1.75

Num.

Architectural Component

Below_C_AR

Above_C_AR

R_po

Ω_op

Interior nonstructural walls and partitions

--- Light frame ≤ 9ft (2.74m) in height

1.0

1.5

--- Light frame > 9ft (2.74m) in height

1.4

1.5

2.0

--- Reinforced Masonry

1.0

1.5

--- All other walls and partitions

2.0

2.8

1.5

Cantilever elements (unbraced or braced to structure below its center of mass)

--- Parapets and cantilever interior nonstructural walls

1.8

2.2

1.5

1.75

--- Chimneys where laterally braced or supported by the structural frame

1.8

2.2

1.5

1.75

Cantilever elements (braced to structural frame above its center of mass)

--- Parapets

1.0

1.5

--- Chimneys

1.0

1.5

--- Exterior nonstructural walls

1.0

1.5

Exterior nonstructural wall elements and connections

--- Wall element

1.0

1.5

--- Body of wall panel connections

1.0

1.5

--- Fasteners of the connecting system

2.2

2.8

1.5

1.0

Veneer

--- Limited deformability elements and attachments

1.0

1.5

--- Low deformability elements and attachments

1.0

1.5

Penthouses (except where framed by an extension of the building frame)

--- Seismic Force-Resisting Systems with R≥6

N/A

1.4

2.0

--- Seismic Force-Resisting Systems with 6>R≥4

N/A

2.2

2.0

1.75

--- Seismic Force-Resisting Systems with R<4

N/A

2.8

2.0

1.5

--- Other Systems

N/A

2.8

1.5

Ceilings

--- All

1.0

1.5

Cabinets

--- Permanent floor-supported storage cabinets more than 6 ft (1,829 mm) tall, including contents

1.0

1.5

--- Permanent floor-supported library shelving, book stacks, and bookshelves more than 6 ft (1,829 mm) tall, including contents

1.0

1.5

Laboratory equipment

1.0

1.5

Access Floors

--- Special access floors (designed in accordance with Section 13.5.7.2)

1.0

1.5

--- All other

2.2

2.8

1.5

Appendages and ornamentations

1.8

2.2

1.5

1.75

Signs and Billboards

1.8

2.2

1.5

1.75

Other rigid components

1.0

1.5

Other flexible components

--- High-deformability elements and attachments

1.4

1.5

2.0

--- Limited-deformability elements and attachments

1.8

2.2

1.5

1.75

--- Low-deformability elements and attachments

2.2

2.8

1.5

Egress stairways not part of the building seismic force-resisting system

1.0

1.5

Egress stairs and ramp fasteners and attachments

1.8

2.2

1.5

1.75