X-Ray Shielding

1- For "drywall" use gypsum as material (gypsum thikness in drywall = 12.7 mm)

2- Build-up factors for X-rays between 100 keV and 300 keV were calculated using Trubey's table (lead and concrete only).

3- For X-rays below 100 keV the Trubey's build-up corresponding to 100 keV was used (lead and concrete only).