Determine Moment capacity of the section. Usually the total beam depth cover 1/2 of the rebar diameter. Usually 60,000 psi for new buildings and 40,000 psi for older buildings. Specified yield strength of reinforcement. I will pick insert since it is clean and less welding in your case. This is typically 3000, 4000, or 5000 psi. The cost and schedule will be driving which option to pick. However, if you do want to use the width from WRC107 without showing overstress at the edge, and if the re-pad is wider than 16 times of the pad thickness, an intermediate welds or separated pad sections are required to maintain the integration of pad and shell. So when we provide sufficient width as stated above, We ignore the stress at the edge. If you are using WRC107, you may end up much wider re-pad becasue WRC107 is too conservative by assuming the whole re-pad is rigid, which is not true. (T is the combined shell and pad thickness). If using re-pad, you can use the same square root (RxT) and ignore the stress at the edge. Square root (RxT) is the distance the local bending stresses in the vessel dissipate to the point of being negligible.Ģ. R is the vesssel mean radius of curvature, T is the insert plate thickness.īy doing that, you can run the local stress analysis just at the nozzle to shell junction with shell thickness as 0.75". The insret can be square with 2"-3" radius round corner.
#How to calculate reinforcement pad dimensions plus#
If using insert plate, which is not uncommon, making sure the width of the insert plate, measured from outside of the nozzle, is not less than: square root (RxT) plus width of the taper section (which in your case will be 1.125" for a 3:1 taper). Don't confuse the pressure requirement per UG-37 vs. Here are our solutions to this problem coming all the time. To calculate Concrete and Total Rebar in a multi sided slab see: Calculate Concrete and Rebar in Multi Sided Slabs 16 Bars 11'- 6' 10 Bars 19'- 6' Total Length 420 ft Includes 10 waste / lap Exact Spacing Length 16' mid 10' Width 16' mid 10' 21 x 20 ft Lengths (Enter Cost per Bar) Approx Weight 438.1 lb (US 1.