Installing 5/8″ plywood in the attic to provide some needed storage space. There is not a lot of overhead but it is better then nothing. 6′ wide by 42′ long.
Interior wall removal and new wall framing.
Investigating the sub-floor, which was originally the finished floor, for termite damage. Most of the sub-floor is made out of heart pine which is extremely hard and has a high resin content. “Heart Pine is the heartwood of the longleaf pine (Pinus palustris) tree. Because of properties particular to this species of pine, Heart Pine wood is extremely hard, strong, and stable, making it an excellent wood for flooring.” (www.longleaflumber.com)
Heart pine is 1225 on the Janka scale. That puts it in the same hardness as red oak.
The Janka hardness test measures the resistance of a sample of wood to denting and wear. It measures the force required to embed an 11.28 millimetres (0.444 in) diameter steel ball halfway into a sample of wood. This method leaves a hemispherical indentation with an area of 200 mm2. A common use of Janka hardness ratings is to determine whether a species is suitable for use as flooring. (wikipedia)
This is termite damaged plywood underlayment that is installed on top of the heart pine sub-floor.