I would never suggest this method, the side shear from the contact with the soil give most of the bearing capacity and that is jeopardized with tamping backfill.
I would advise you run your videos by a structural engineer, 24" o.c. spacing does not work in most of the country for wind loading, I would never frame a floor with 24" o.c. Why is plywood better than osb? very bad video should be pulled
As always, consult an engineer, what's missing with this recommendation? Blocking of the floor joists
I am a structural engineer, and am amazed articles like this get published, none of what is shown is even close to meeting building code loads. A 16' long 2 x 6 does not have any load capacity for storage. These are simple calculations for an engineer, you should always consult an engineer in lieu of guessing
Subscribe to Fine Homebuilding magazine now and save up to 52%
© 2017 The Taunton Press, Inc. All rights reserved.
Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features.
Start your subscription today and save up to 52%