I am designing a facility in North Dakota that is to service large trucks all year round. The part of the facility in question is the indoor truck washing bays (two total), with roll up doors at each end. The bays are heated (ND winter design temp is -22F). Does anyone know what the...
Here's the siuation -
9000 CFM RTU w/ 2.5" ESP
Ducted Return System
Min O.A. = 4000 CFM to make up for constant exhaust requirements.
Unit supplies air to VAV system for a two story wing of a hospital with isolation rooms, etc.
Wing is connected to other portions of the hospital which are...
I am the HVAC designer for my engineering firm, and we frequently come across VAV systems in medical office buildings that pose a unique problem. Based on heat loads and standard practices, we supply enough flowrate to each room to cool the space using the 400 CFM per ton rule of thumb...
I am in the process of designing an inland (freshwater) marina on a lake in a 110 MPH wind zone. I am having some trouble locating information relating to the lateral force resistance of vibrated-in wood piles. The piles are 8"-10" in diameter, will be vibrated to a refusal depth approximately...
I am in the process of pouring a containment area in Mississippi. The slab (60'x70') is to be poured this week, with temperatures hovering around freezing at night and daytime highs around 45 degrees. My contractor would like to add 2% calcium chloride to the mixture. This slab cannot have...
Simple question. Is it ever appropriate to take a 10' diameter vertical storage tank (34' tall)and weld I-beam stilts to the shell effectively raising the bottom of the tank 12-18" in the air. I have never seen this done. I believe the installer did it to prevent corrosion from standing water...
I am designing a short piping run for some Jet A fuel. The run is 50'. I am looking to find out which API spec refers to the max velocity of the fuel in the pipe to minimize static buildup, or other reference which would supply guidance for this application. Is it API 5L? Thanks for helping...
Anyone have any experience doing the integrity testing for a double wall, horizontal UL 142 tank (10K-20K range)? For single wall tanks, ultrasonic testing has worked well for us in the past. However, non-destrcutive testing of a double wall tank seems a bit tricky. Anyone with experience...
thread194-5514 is closed. I am looking to find the USACE technical manuals referenced in it. How do I go about locating these? Are they free? Downloadable? Thanks all.
CHris
I recently inspected three fuel storage ASTs in Florida, and found that all three tanks were welded to their foundation. That is, the concrete pedestal on which they stood had steel plates (probably small I beam pieces) cast into it, and the tanks were welded to those plates directly. Has...
I am scheduled to do a tank inspection at an asphalt plant in Florida. The tanks are vertical single wall ASTs (20,000 gallons). The pictures I have been sent of the tanks show that the tanks appear to have been dropped on the ground and dragged and hit with a loader and various other abuses...
I am having an issue with a local fire marshall in Mississippi. He cannot find any regulation or code that would allow me to use multiple 20,000 gallon tanks to store Jet-A fuel on an airport. My design calls for three 20K tanks. He has said that the limit on size is 12,000 gallons. These...
I am faced with the task of inspecting both horizontal and vertical AC tanks. The tanks are heavily insulated with approx. 4" insulation with aluminum backing on all sides. Has any ever faced this kind of task before, and if so, how did you conduct an inspection of such a tank?
Do the tanks...
MY question is in regards to the use of a horizontal petroleum storage tank (20,000 gallon) in a vertical position. I have a customer that has done this without notifying anyone. What should my concerns be regarding the safety of this practice. The tanks are most likely 1/4 inch steel walls...
