Hello Everyone,
Is it expected for a design engineer to remember everything off the top of their head for a 1,000-page set of contract documents? I am the design engineer in question being asked questions at progress meetings, but often I don't recall the exact procedural language or spec for a...
Hello!
I am looking to get some advice regarding a mobile hand railing system possible weak point. I've been asked to look into creating mobile hand rails to act as sign mounts. These mobile hand rails would be moved on occasion to different locations as needed. I created two designs due to a...
Hi All,
So I've noticed a lot of local building codes lump free standing masonry walls and fences together in some of their regulations such as requiring engineering when going over six feet in height. Is there some language in the IBC that defines a masonry wall as a type of fence? Are all...
Hey All,
I have some questions about licensing exam scoring:
1. Do employers know an examinee's scores before the test taker does?
2. Can an employer effect an examinee's score?
Just wondering.. Thanks.
Hello All,
I'm in California and I am looking for the references regarding the rules for a design storm event in Southern California. I know there where to find the design storm events for capture and treat BMPs, but before those regulations were implemented I'm sure there were regulations out...
Hi all,
Is it actually a thing for engineers who went to school to discriminate against licensed engineers who never went to school? I have a friend whose father never went to school, but became a licensed civil engineer. She told me that engineers who went to school would give him crap for...
Hello All,
The Caltrans highway design manual recommends a minimum thickness on road overlays to help resist cracking. Indeed the idea behind "superpave products" is to make a long lasting road by increasing the Asphalt Concrete section. What I am looking for are reference standards to support...
Hi All,
Anyone know where to start looking for estimating water use for dust control? Is there a rule of thumb for the amount of water used per square foot of disturbed area per day?
- Riversidean
Hello Everyone!
Has anyone been successful in not implementing a Caltrans Retaining Wall Type 1A into their Bioretention Basins structures as a sort of separation barrier between the bioretention basin and existing soil material? Although my local NPDES district seems to consider a 1 foot...
Hi All,
Currently I am working on a construction estimate for a bioretention bmp systems. An aspect of a bioretention basin is the construction of a perimeter "retaining wall." I am using the BNI General Construction Cost Book to obtain cost data for said retaining wall. My question is if the...
Currently I am working on getting the drawdown for my bioretention basins below three days. The controlling factor seems to be the infiltration rate of whatever soil mixture I use. Now realistically I know the best soil type I may ever get is 5 to 6 inches, but this won't allow me to drain the...
So I am designing a concrete pad via ACI360. For a unreinforced concrete pad it recommends dowel rods at joints with oil used as a bond breaker from the concrete. I have searched online for a standard on what type of oil / epoxy / sleeves to use, but nothing is coming up.
Can anyone point me in...
Hello All,
Currently I am looking into ways of capping the ends of four large corrugated metal pipes with diameters of 30", 36", 36" and 42" so that they may be slurry filled and abandoned. I am thinking a good way to close the ends of these pipes would be to welded them shut, but I want to...
This may be a rather simple post to answer. My group, ( A solid waste management agency ) rarely installs roads, but we are planning on installing some in the future. From all appearances a IR "gun" thermometer should work just as well as a bi-metal dial thermometer when checking to make sure...
Hello,
This may be a very simple question, but I am looking at creating an alignment for an 8" HDPE SDR 17 pipeline. I am trying to keep to the angles used by pipe fittings, but in some cases I get a 40 degree angle rather 45 degree angle. Is there anywhere I can for formulas for pipe bending...
Hello Group,
So currently I am looking at utilizing cement stabilized soil at one of my worksites for erosion control and subbase strengthing. Having looked into my state's highway design manual and a the "greenbook" I have not found anything discussing how to determine how much cement is...
Hello Engineering Community,
Does any know what a typical finished road surface density would be using Asphalt Grindings as an aggregate base road? Let's say compacted to 95% to 100%?
Currently we have the asphalt grindings in a small material pile and from traffic tickect tonnage and a...
Currently I have been asked to look into possibly using a earth constructed berm instead of a traffic barrier on the oustide edge of a outward turning road which is at the hinge to a fairly steep slope. Researching the subject on my own I am concerned about the berm merely becoming a truck ramp...
Currently I have been asked to look into possibly using a earth constructed berm instead of a traffic barrier on the oustide edge of a road which is at the hinge to a fairly steep slope. Researching the subject on my own I am concerned about the berm merely becoming a truck ramp for the TL-5...
Right now I am trying to recall the rational hydrology method. Would one use true area when performing a calculation? or planar area?
I am thinking planar because I believe rain comes down in a flat sheet, at least theoretically for these purposes. Any advice would be appreciated.
Thanks...
