Then usable tread depth is compared to remaining tread depth in order to calculate tread wear percentages. For example, a tire that started with 10/32 of original tread depth and has worn off 4/32 (down to 6/32 of remaining tread depth) is 50% worn.
1 If you know the census tract number: Use the IRS list of 2014 Qualified Census Tracts by county. 2  If you have a street address: Visit HUD's interactive QCT Map and enter the property address to view what Census Tract the property is located.
For parcel specific zoning use the Zoning Index Map link located to the left. Click on the quarter section associated with your parcel and you will be taken to the appropriate map. If you do not know which quarter section to select, reference the card you receive from the Pierce County Assessor regarding your property taxes. The quarter section, section, township, and range are shown on this card.