Seismic parameters entry in IBC code

HI friends,

while defining Seismic Parameters in Staad using IBC, do we need to multiply the Ss, S1 parameters by g (=9.8 m/sec2) and enter the value or Staad automatically multiplies it?

since Ss & S1 are mapped seismic parameters defined as % of g.

For Example: 

The Seismic Parameters for Riyadh(KSA) area are Ss = 0.05S1 = 0.01 % of g.  So when entering in Staad should we multiply these parameters by 9.81 (SI units) and enter as Ss = 0.49050S1 = 0.098  or we can directly enter without multiplying.

Thanks in advance.

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