Curb weight probability distribution and the recommended gross weight of passenger car in mechanical parking garage design

Probabilistic evaluation of design live loads for Brazilian light-duty vehicle parking garages

“…This should not be of much importance, since 94.3% of the vehicles have 20 years of age or less. It can be seen that, similar to other studies in the literature [18], [24], [38], the curb weight of passenger vehicles can be reasonably adjusted by a log-normal distribution. Following the same procedure of averaging by sales and by relative frequencies of vehicle ages, the distribution shown in Figure 8b is obtained for light commercial vehicles.…”

“…where 𝜇𝜇 𝑄𝑄 and 𝜎𝜎 𝑄𝑄 are the mean and standard variation of vehicle's weights within the considered population. Although the distribution of 𝑄𝑄 is often assumed to be log-normal or other non-Gaussian distributions [18], [24], [38], the distribution of the load effect 𝑆𝑆 will be close to Gaussian due to the central limit theorem.…”