The Blue screws are really great for floors where the wieght is minimal.
I have if you have a clean hole put them into walls and you would have a hard time
getting them out. Last summer I put stairs to water behind the house. Our waterfront is
300 feet of 18-20 foot limestone cliffs. I needed a high stregnth lag set up - so I
rented
a 3/4" Hammer drill at Home Depot. Cut through the Limestone like butter. It was
so much fun I've got about 15 extra holes. They happened to be the same size as wine
bottle
holes so I've put corks in them to keep the dirt out untill the hole is needed.
Anyhow to get to the point I used Lead Plugs and Deck Bolts. After a long hard
cold winter there is no way the bolts are coming out unless you use a ratchet. Even a
sledge hammer only breaks off the bolt. Soo if you need stregnth I'd use the lead
plugs.
Epoxy is great - over the long haul metal is more stable. I make a lot of metal
soldiers and
the weakest point is always the epoxy joints.
My 2 cents worth US. ( several hundred Canadian )
cheers and may you have a steam filled weekend
Ferdinand