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There's going to be about 1,600 cubic yards of recycled concrete generated that I wanted to pulverize and use as misc. base meeting the Greenbook standard 200-2.8 provisions. The soils report calls for new 6" agg. base under 4" sand under 4" new reinforced concrete tennis court. I would use...

I have a project in Southern California where some large existing steel reinforced portland cement concrete tennis courts need to be replaced in kind. It would be nice to recycle the concrete as base material for use under the new tennis court concrete surface. Since the existing courts have...

Pedarrin2 is correct on the ownership issue of valves. Nibco has some good fire protection sprinkler system info on their website. Page 53 of the below pdf has a schematic in it. http://www.nibco.com/assets/NIBCOFPCat.pdf

Check this link out: http://www.firehydrant.org/pictures/WSAindex.html PIV's are not always required in a fire system as long as the fire department has a way to visually tell if the flow of water is open to a building riser. Above grade Double Check Detector Assemblies have 2 OS&Y gate...

Hi everybody, I could sure use some advice on this one. I need to provide a 6" fire service line to a building here in Southern California that is on private property. Normally this would not be an issue but the building fire riser is exposed along the wall of the basement floor outside of the...

Hi everybody, I could sure use some advice on this one. I need to provide a 6" fire service line to a building here in Southern California that is on private property. Normally this would not be an issue but the building fire riser is exposed along the wall of the basement floor outside of the...

Does anyone know if there is a federal, N.F.P.A., or California State regulation that newly constructed fire mains that serve sprinklered buildings or private on-site fire hydrants need to be disinfected (chlorinated) before put into service? Case in point, I have 10 projects in Southern...

Does anyone know if NFPA states that newly constructed fire mains that serve sprinklered buildings or private on-site fire hydrants need to be disinfected (chlorinated) before put into service? Case in point, I have 10 projects in Southern California that the contractor wants to know if he...

The pea gravel mix design is not intended for the school with the max. w/c ratio of 0.50, which I found out recently. I had specified a max. w/c ratio of 0.60 for the schools this mix is to be applied. This mix is using WRDA 64 as an admixture.

Guidelines - Expansion joints every 6', #4 bars every 18" on center, both ways. The slump is 5" and W/C ratio is 0.61 - mix is stamped by a P.E. I think I will approve the mix design but I just hope it doesn't come back to haunt me in the future.

Guidelines - Expansion joints every 6', #4 bars every 18" on center, both ways. The slump is 5" and W/C ratio is 0.61 - mix is stamped by a P.E. I think I will approve the mix design but I just hope it doesn't come back to haunt me in the future.

I'm trying to work with the guy and was hoping to base my rejection or acception of his mix design on some facts. His mix design shows only a 4" slump and he wants to use a 2" line pump. I am leaning towards rejection since the size of the aggregate for flatwork purposes seems too small.

I have numerous school site projects in Southern California, that require new concrete flatwork. The specificatons, which I wrote, specify a mix design of compressive strength minimum 4000psi, W/C ratio 0.50 maximum, with 1 inch aggregate passing 95-100%. If it helps in this question, the...

I have numerous school site projects in Southern California, that require new concrete flatwork. The specificatons, which I wrote, specify a mix design of compressive strength minimum 4000psi, W/C ratio 0.50 maximum, with 1 inch aggregate passing 95-100%. If it helps in this question, the...

mweng, It is becomming more and more common to use mechanical joint restraints on pipe in lieu of concrete thrust blocks. I do not know if the work you speak of will be for private or municipal work. Some municipalities do not allow the use of mechanical restraints while some require both...

Thanks for the replies. The existing elevation at the fire hydrant nozzle is about 618'(feet). Thus the static pressure should be about 92psi using your equations. The residual and pitot pressure I gave earlier were in psi. The existing main in the street is a 12" pipe. Using the above...

Help!! I have a flow test from a local water district in Southern California that provides the following information: HGL - 830 Residual Pressure - 90 Outlet Size (inches) - 4 Outlet Coefficient - 0.9 Pitot Pressure - 40 Observed Flow - GPM - 2717 My question is how do I convert the HGL of...

You may want to take a look at the following link for more pipe capacity and flow data, it may be helpful for future projects. http://www.muellercompany.com/test/download/pdf_down/16-28-29.pdf Canman

Jeff, sfritten was right that you need to check with the local water district or if it is under the city's jurisdiction, city water department. The landscape architect just needs to give you the size of meter and service connection he needs. If it is a parking lot you will probably need...

SCHETWYND: This link will probably be the answer to your prayers regarding this subject. http://www.pwpipe.com/pdf/tb-d5.pdf canman