Table 1    Coefficient system design and structural factors earthquake resistant

Structural Type Qi Rd Cd K0 Height Limitation(mt)
Zone 1 Zone 2
System 1. Frames
A-I Special Steel frame NA 5.5 4.75 0.15 50 SL
A-II Intermediate Steel frame NA 4.5 4.00 0.15 NP 12
A-III Ordinary Steel frame NA 2.5 2.00 0.15 NP NP
A-IV Special concrete frame NA 5.5 4.75 0.13 SL SL
A-V Intermediate concrete frame NA 4.5 4.00 0.13 36 SL
A-VI Ordinary concrete frame NA 2.5 2.00 0.13 NP NP
System 2. Walls
M-Ia. Special Concrete walls <0.10 4.5 4.0 0.09 50 SL
M-Ib. >=0.10 4.0 3.5 0.07 50 SL
M-IIa. Ordinary concrete walls <0.10 3.0 2.5 0.09 NP 30
M-IIb. >=0.10 3.0 2.0 0.07 NP 30
M-IIIa. Intermediate prefabricated concrete walls <0.10 3.5 3.5 0.09 12 30
M-IIIb. >=0.10 3.0 3.00 0.07 12 18
M-IVa. Ordinary prefabricated concrete walls <0.10 2.5 2.5 0.09 NP NP
M-IVb. >=0.10 2.0 2.00 0.07 NP 12
M-Va. Special reinforced masonry <0.10 3.0 2.5 0.09 12 18
M-Vb. >=0.10 2.5 2.0 0.07 12 18
M-VIa. Intermediated reinforced masonry <0.10 2.5 2.0 0.09 NP 12
M-VIb. >=0.10 2.0 1.8 0.07 NP 12
M-VIIa. Ordinary reinforced masonry <0.10 2.0 1.8 0.09 NP NP
M-VIIb. >=0.10 1.5 1.3 0.07 NP NP
System 3. Duals Special Frames
De-I Steel frames with eccentric bracing NA 5.0 4.0 0.13 SL SL
De-II Special Steel frames with eccentric bracing NA 4.5 4.0 0.13 SL SL
De-III Special Concrete Walls NA 4.5 4.0 0.09 SL SL
De-IV Ordinary Concrete Walls NA 4.0 3.5 0.09 18 30
De-V Special reinforced masonry NA 3.5 3.0 0.09 12 18
De-VI Intermediated reinforced masonry NA 3.0 2.5 0.09 NP 12
System 4. Duals with intermediated Frames
Di-I Steel frames with eccentric bracing NA 4.5 4.0 0.13 12 15
Di-II Steel frames with concentric bracing NA 4.0 3.5 0.13 NP 12
Di-III Special reinforced concrete walls NA 3.5 3.0 0.09 30 50
Di-IV Special reinforced masonry NA 2.5 2.0 0.09 NP 12
Di-V Intermediated reinforced masonry NA 2.0 1.8 0.09 NP 9
Di-VI Ordinary reinforced masonry NA 3.0 2.5 0.09 NP NP
System 5. Inverted Pendulums
Pi-I Special Steel Frames NA 1.5 1.5 NA 10 12
Pi-II Intermediated Steel Frames NA 1.5 1.5 NA NP 10
Pi-III Ordinary Steel Frames NA 1.3 1.3 NA NP NP
Pi-IV Special reinforced concrete frame NA 1.5 1.5 NA 10 12
Pi-V Intermediated reinforced concrete frame NA 1.5 1.5 NA NP NP
Pi-VI Ordinary reinforced concrete frame NA 1.0 1.0 NA NP NP
Pi-VII Wood frames NA 1.5; 1.5 NA NP NP

  SL = No limit, NP = Not allowed, NA = Not applicable.
  Note : Heights are measured from the top of the foundation
  Zone factor (see Fig. 2)