thread809-159697
I am looking for some guidance on 5.11.2.1 (API-650 13th Edition) regarding overturning.
Calculating OT resistance and sliding resistance for Wind, but need clarifiation on the Parameters M-DL, and M-DLR. The tank is a new 52'D x 32' open top tank that will have an aluminum...
I am working with a Fire Sprinkler Company that is indicating that we should use NFPA 30 Table 16.5.2.9 for wood pallet on floor stacked storage of cartoned plastic quarts of Class IIIB combustible liquids.
I have maintained that NFPA 30 only lists rack storage with in-rack sprinklers (and...
I am seeking peer opinion/discussion as to a statement that is presented in a book entitled "Aboveground Storage Tanks" by Philip E. Myers, in regard to calculating design loads for storage tank columns that are within the tank. The column baseplate would be subject to hydrostatic load.
The...
I am seeking peer opinion/discussion as to a statement that is presented in a book entitled "Aboveground Storage Tanks" by Philip E. Myers, in regard to calculating design loads for storage tank columns that are within the tank. The column baseplate would be subject to hydrostatic load.
The...
I am new to Hydrocad and am looking for recommendation as to best way to model a rectangular trench drain.
Total drainage basin is 36' wide by 600' long with the trench drain running N/S down the center for the full 600' length.
Paving is sloped from the west, and the east at 1% to the trench...
ACI 318 - 11.5.5.1 States that a minimum area of shear reinforcement shall be provided in all reinforced concrete flexural members (prestressed and nonprestressed) where factored shear force Vu exceeds 1/2 x Phi x Vc;
except:
(a) Slabs and footings;
Do I interpret this to mean that in slabs...
I am planning to utilize precast concrete piles for a foundation in Seismic Design Category C and IBC 1807.2.23.1.1 requires concrete piles to be connected to the pile cap by embedding the pile reinforcement or field placed dowels anchored in the pile cap for a distance equal to the development...
I have contracted to have a new home built and am getting stonewalled by a very large nationial homebuilder.
They have poured footings and when asked if they intend to compact the 4 inch stone base prior to pouring the 4 inch thick basement slab they indicated that they don't do this because...
I am specifying a pair of stormwater pumps, 50'head @2,000gpm pumping stormwater from storage tank dikefields.
Some of the fields are not stoned, so the system picks up quite a lot of sediment and sand from erosion. This problem is slated to be corrected, but for now.... what would be a good...
I am thinking of running foam piping for petroleum storage tank subsurface in earthen dike.
Looking for clarification on NFPA 11 Chapter 4.7 regarding specifying piping for this application.
Foam solution will be 3% Universal Gold (Kidde/National Foam).
Chapter 4.7.2.1 states Galvanized pipe...
I am calculating NPSHA for specifying a 4,000 gpm gasoline pump.
I know manufacturer's pump curve prepare NPSHR curve based upon water. Therefore, I assume NPSHA conponents should all be referenced using water. Is this correct?
For example I am proposing that NPSHA would be 33' water...
I have an application where we are installing a 20" diameter pipe with pig catcher/launchers at both ends.
We intend to stub in a variety of pipe sizes 8" and 12" branches into this 20" and need to prevent a poly (bullet shaped) pig from getting hung up on the stub ins.
I...
Can anyone shed some light on the following?
I have heard that when you specify A36 steel you typically get 50ksi and that A36 is now considered a special order. Is there any truth to this? Is A572 Grade 50 a common replacement for A36?
I know that gate valves should never be used for throttling flow. I had someone ask me if a gate valve is used to throttle flow say by opening 50% would it damage the seats, seals, etc on the valve?
I wasn't sure of the answer. Can anyone offer any insight into the problems that are...
I know this is a basic hydraulics question, but here goes:
I am limited to 100 psig at the discharge of a centrifugal pump.
Product is gasoline with SG of 0.72.
Static head is 25'.
I want to determine max flow rate for a given size pipe and have calculated all of my equivalent lengths of...
I have to demonstrate to NJDEP that styrene monomer and methylene chloride do not have a destructive effect on concrete.
The Portland Cement Association has a document that lists the effects from a limited list of chemicals but unfortunately the aformentioned two are not listed.
Can anyone...
