[gas0linealley]

According to your reasoning then, a one inch bolt embedded one and one half inches into concrete would be capable of holding the full tensile strength of the bolt.

Were you on the Big Dig design team?

[caltaxed]

1.5X bolt diameter is only used for thread engagement in similar materials (usually steel). Elongation negates any benefit in engagement beyond 1.5X.

You really need much more than 1.5X engagement when using epoxy to secure the fastener, and the bonding operation is very depentent on the quality of the application (operator dependent). Most critical applications require extensive validation testing to assure the bond process is peformed properly.

[Mark was here]

According to your reasoning then, a one inch bolt embedded one and one half inches into concrete would be capable of holding the full tensile strength of the bolt.

Do you comprehend how a chain is as strong as it's weakest link?

Have you ever thought about why nuts are only so thick? Bolts do their work in the first threads, once you are in the proper amount, you do not gain any more strength.

And to answer your stupid question, no I do not have anything to do with the Big Dig, except pay taxes.