Does anyone know where I can find older ASTM Specifications on the internet? I am looking for ASTM A325 Bolt Specification for 1991. Perhaps this wasn't a year when this ASTM specification was issued. Does anyone know the closest prior issue date?
Thanks for your help!
If a soils testing Laboratory gives Unconfined Compressive Strengths (qu) of a rock sample can that be correlated to the Rock Cohesion by qu/2?
Thank you.
If a Soils Testing Laboratory gives you Unconfined Compressive Strength (qu) Values for Rock Core strength tests, can you assume that the Cohesion of the Rock is equal to half of those values- i.e. qu/2?
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I believe that it is fairly simple to calcuate the stress in one bar using the parallel axis theorum and My/I, though I am not sure how to select the quantity of rebar needed, i.e. the spacing.
Thanks.
Can anyone give a basic explanation of how to calculate the Moment of Inertia of a Bolt Group?
I need to determine the size of the rebar in an anchor bolt cage that is to be embedded in concrete.
Thank you.
I am designing a 30-foot deep by 8 foot diameter reinforced concrete caisson. The value that I need is the horizontal subgrade modulus for the rock in order to determine what deflection the foundation will see when bearing against the rock.
Bowles has some empirical formulas for estimating Ks...
Does anyone know of a good reference for typical values of Rock Subgrade Modulus of Deformation, Ks? I am designing some deep caisson foundations that are socketed into Rock and I need the Subgrade Modulus for the Rock.
Thanks.
