I don't have design experience on parking lot lighting design. However, I was asked to review a parking lot lighting plan set to find out the areas to improve/optimize, e.g., reduce the number of lighting poles with different lighting fixtures, etc.
I know it's an opportunity to extend my...
CGD means "Combustible Gas Detection" system.
I thought that this requirement for storm drain system is not needed since it's different from Wastewater System which produces flammable gases.
I am not familiar to NFPA 820 but I just found that the storm water pumping station wet well requires "CGD" if it is enclosed (Table 4.2).
I have not seen CGD in "storm" water pump station but is it a "NEW" requirement?
If it is a new requirement, is there any good product to recommend for the...
Thanks for all your comments.
The existing pavement (1.25% slope)have cracks several areas so milling is needed before overlay.
I might reduce the depth of milling to 1"
@Ron
I don't know much about "mix-in-place" Is there any benefits on cost and construction schedule? It would be great to...
I have an AC overlay project for an old Park parking lot.
I checked as-built plans and found that the depth of the existing AC is only 2.5" deep.
It gives me a concern that 1.5" deep grinding would "BREAK" the existing AC so it might cause repeating the same job in the near future.
The owner...
As cvg said, HY8 is strongly recommended.
If you run the HY8 program for several scenarios, you will be able to understand inlet & outlet control for your project and feel confidence on your design.
I used the program for some projects and included key analysis data in Drainage Reports which...
Whenever I design storm drain basins, I come up with a question.
Is it appropriate that storm drain pipes connected to a new basin can be included as a part of the basin capacity?
Some municipalities say "No" for conservativeness, some say "OK".
I know that conservative design of the basin...
Thanks for your comments.
I just want to make sure if I have understood the design criteria correctly.
"The starting point for hydraulic grade calculations in collection system design shall be the water surface in the pond generated by the volume of 1 10yr-48hr storm"
If,
- Composite C =...
I don't have much experiences on storm drainage basin calculations. So it would be great to get some advices from the experts in this forum.
A local storm drain specs includes the following criteria.
"The starting point for hydraulic grade calculations in collection system design shall be the...
