Lead shielding thickness for a diagnostic x-ray room?

Question

What is the shielding thickness for a typical diagnostic x-ray room?

Answer 1

For primary barriers, which includes the floor, ceiling, and any walls the x-ray beam may be directed towards, the thickness is 1/16 inch of lead equivalent.  For secondary barriers, the other walls in the x-ray room, the thickness is 1/32 inch of lead equivalent.  Rarely, however is lead used in an x-ray room.  Usually, several inches of concrete is used, which is equal to 1/16 inch of lead.  Lead aprons are .5mm of lead equivalent, which block about 90% of x-rays.

Answer 2

On pg 8 in the middle it comes out to 5 lbs per square ft or 5/16 of an inch for a typical x-ray room. There are however ways to divert the xrays or use other shielding material that would be 5 lbs per square foot.