Recent content by westend392

Hi Everyone, Is there a quick way (or software that I can use) of displaying the coordinate system of particular aerial image file? Also, if I have aerial image that is setup in, say, UTM coordinate system, is it possible to convert it so it is refereced in state plane coordinate system? Is...

My client wanted to reuse the diesel fuel that they are storing at an existing fuel storage tank for their new tank. Can anyone recommend to me a standard of quality of diesel fuel for typical medium to large standby generators application? If filtration service is available, can anyone...

Any thought on suggested coating system for the black iron pipes especially for outdoor application (such by the main tank)?

My client wanted to reuse the diesel fuel that they are storing at an existing fuel storage tank for their new tank. Can anyone recommend to me a standard of quality of diesel fuel for typical medium to large standby generators application? If filtration service is available, can anyone...

Thanks everyone for your reply.

Hi everyone, I'm totally new to storage tank design and wondering if someone can help explain to me or show me a sample figure that I can look up to help me understand the following terms: - Shell Plate - Roof Plate - Knuckle Plate - Floating Roof Thanks in advance

Due to space limitation, we were forced to put a sewer wet-well in the middle of a residential street (light residential traffic with max speed limit 30 Mph). Can anyone recommend a steel/aluminum access hatch (w/ clear opening around 30"X36") that I can use for this type of situation? Most of...

Due to space limitation, we were forced to put a sewer wet-well in the middle of a residential street (light residential traffic with max speed limit 30 Mph). Can anyone recommend a steel/aluminum access hatch (w/ clear opening around 30"X36") that I can use for this type of situation? Most of...

Our peak flow has already incorporated some future growth allowance. This is why I'm even more concern with low flow. Any suggestion for the type of odour control to use? Most of our lift stations are small (w/ 3-5 HP grinder pumps) except for a few that I would consider medium ( w/ 10-20 HP...

Has anyone tried to include flow-attenuation in the hydrologic model of wastewater transmission system with multiple lift stations? How was it done? Did it change the design significantly?

One thing that I have considered is to control the detention time in the lift station via the control panel to minimize odor problem. I am concern about low flow. Some of our lift stations' peak flows are even less than the minimum flow to avoid settling velocity. There are two solutions that...

Thanks everyone, Fransesca, Our collection system is actually going to be a brand new wastewater gravity collection system. So I would think I&I will be minimum for the first few years of operation. We design the entire system for a normal peak flow with a preak factor of 3.5. Since this...

Hi everyone, I just started modelling transmission system for wastewater collection system thus rather green at it. When I run my hydraulic model for the transmission systems I usually run it under 2 scenarios: 1. With all of the pump stations in the system running. 2. With individual pump...

What do you guys think about "ENR Construction Cost Indexes"? What are they? I've actually never seen them but one or two people that I know suggest using them as unit-price base.

Thanks a bunch ep8934!