The phrase "are normally calculated" is correct and usable in written English.
It can be used when discussing how certain values or metrics are typically determined or computed in a specific context.
Example: "In financial reports, expenses are normally calculated on a monthly basis to provide a clear overview of the company's spending."
Alternatives: "are typically computed" or "are generally assessed".
Fares to La Guardia are normally calculated on the meter.
In structural engineering practice, composed plate structures are normally calculated as orthotropic plates in bending, applying either thin plate theory (Kirchhoff) or thick plate theory (Mindlin/Reissner), without accounting for the eccentricity of neutral planes in different directions.
In part, it was used to disguise the fiscal irresponsibility of the tax cuts: lopping off that last year reduced the headline cost of the cuts, because such costs are normally calculated over a 10-year period.
As already discussed, gearbox torques are normally calculated based on dynamometer measurements that provide the variations of polished rod loads and positions.
The indicators are normally calculated according to their presence or absence for an individual and then summed up for all individuals to create a facility level [ 19, 31].
The bonding strengths are normally calculated by dividing the formal charge (valence) of an ion or group of ions by the coordination number as shown by eqs 14 and 15.
The use phase in Life Cycle Analysis is normally calculated considering both an average use and user.
When shooting digitally the white balance (i.e. color temperature) of the image is normally calculated automatically by the camera.
£120, 4GB storage (expandable with a MicroSD card), 174g, 6in screen, two months' battery life (e-reader battery life is normally calculated on the basis of 30 mins use per day).
Throughout the 18th century until the French Revolutionary Wars, armies had fought at the very most three major battles during a campaigning season, which was normally calculated at 180 days.
SAIDI is normally calculated on either monthly or yearly basis; however, it can also be calculated daily, or for any other time period (Brown 2002).
