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thks guys the ACP is 30 yrs old which is really a bit old and to my understanding has already induce settlement due time and might as well be very brittle and any adjacent additional loads or lateral stress is unadvisable. Only a portion of which will be replaced around 2km and the new PE pipe...

the service is a raw water mainline

The road is a major highway linking most of the industrial warehouses and coal terminal plants within the industrial zone. It is projected to carry 15,000 AADT in 10-15 yrs time but currently the daily traffic is at 7,000 AADT. The depth of cover is 1.0m. Additional soils test is being...

Hi guys hope you can help me with this. We are to relocate the existing 375 AC pipe at the toe of the road batter by laying a new 400 PE mainline about 25m from its original location. The road will be upgraded into 4 lanes and the existing ground is mud soil about 2-4m depth. Here are my...

Hi guys hope you can help me with this. We are to relocate the existing 375 AC pipe at the toe of the road batter by laying a new 400 PE mainline about 25m from its original location. The road will be upgraded into 4 lanes and the existing ground is mud soil about 2-4m depth. Here are my...

We have this 7,350 cu.m underground reservoir with a height of 8.80m wherein 6.0m are underground and 3.8m is above ground. The layout is somewhat trapezoidal in shape and a two chamber system is proposed for considering the maintenance. Is there a guidelines in locating and designing the vent...

Hi can anyone make clarifications on how to determine the elevations of pump and reservoir in watercad when the reservoir and pump house is underground?

Thanks guys for all the info

Hi just wanna ask if the BS3505:1986 was the edition prior to BS EN 1452:2000? Also under the latest edition, does it states that Pipe series 10 is also PN 10? please advise thanks again

Hi thanks can you give me the pressure rating for class c, class d, class e and class 10 for uPVC pipes? thanks again

Hi is there anyone who has a copy of the BS 3505, DIN 8062 - ISO 161/1 for uPVC pipes? I would appreciate very much any help and suggestions thanks

Hi thanks guys for the info. Yap its a pressure system the HDPE DN 315mm will be connected to uPVC DN 125mm and DN 100mm pipe

Hi can anyone help me out on how a uPVC pipe will be connected to HDPE pipe. Im currently designing an irrigation system wherein the client requires us to use uPVC pipe for sizes below 225mm and HDPE for above sizes. Much will be of help if you can give me commercial sizes and specs of uPVC in...

Thanks guys for the info I was just wondering because the principles involved in watercad and epanet are of matrix type I guess similar to cholesky which as others told me needs to be labelled accordingly and closer to each other to minimize the bandwidth (dunno the exact name) I just forgot the...

Hi is there anyone who could advise me regarding the proper assigning of numbers of nodes in water network modelling? Is there a sequence to be followed or steps like a loop maybe in clockwise or counterclockwise? I am using epanet and watercaed software. Pls advise. . .thanks

Its an existing school and we want to minimize the disruption of classes. The affected area is located at two corners of the bldg. which serves as classroom for the grade students. The access going to the area is 2m width door with a ht of 2.1m. The ceiling ht. is 3.5m The equipments to be used...

Will there be any new technology where we can stabilize the foundation of existing structure aside from jet grouting procedures? especially in areas of limited space without affecting much the adjacent structures? please advise anyone thanks

Thanks Maury, based from soil test that was conducted, water is still flowing underneath at a depth of 5m. Is there any way to shut off the floe from the upstream end where the river was diverted?

An existing river 3m wide with recorded water elevation at 1.25m during dry season and 2.5 during rainy season was diverted to give way for the subdivision development. Backfilling was made but compaction requirements were not observed w/c is at every 6". Residential houses built on top of...

I am designing a 10 hectare subdivision and the space is limited. The developer wants to maximize the saleable area he can derived based from the 70 to 30% area distribution of saleable to non-saleable areas. There are no provision of easement at the back of the lot where we usually place the...