Hello,
I am reviewing a retaining wall project which uses anchor wall software. I understand the minimum factor of safety for crest toppling is 1.5 (NCMA). In the report 1.5 falls under the “Default Minimum”, but the engineers are using different minimums when analyzing crest toppling, ranging...
Hello,
I am reviewing a retaining wall project which uses anchor wall software. I understand the minimum factor of safety for crest toppling is 1.5 (NCMA). In the report 1.5 falls under the “Default Minimum”, but the engineers are using different minimums ranging from 0.95 to 1.5 to design...
Hello,
I would like to design an infiltration trench to infiltrate roof drainage only, in order to reduce my site impervious and thus volume discharge, since there is not much room for swm structures on site.
If I use the rational equation to get a volume.
How would I go about that? Would my...
Hello, I was hoping to get some help about PA one calls, or just one calls in general, because I’m very new at this.
Regarding the design notification call.
If the site will get spray painted or marked by the facility owners after the designer calls, be it 90 days or more before final...
Hello,
Hoping someone can help me with hgl analysis up the pipe storm drain. I’m designing my storm drain for the 25 yr storm.
If one has the flexibility of starting the hgl computations from anywhere in the basin or pipe ( crown or half way ), which would be the best place to start ? I have...
Are stilling basins usually used for pipe outfalls at channels or swales ?
Is it common to use Stilling basins at the outfalls of pipes going into the basins or ponds? It’s not too clear to me, in my PA e & s manual ( vague ), whether the S.B detail is only for channels?
Where would I get the...
When analyzing the capacity of a pipe, when do we use Manning's equation, solving for Q, given (S, n, A, R) and when do we use other equations, say the culvert equations for different head conditions?
Also. Would we ever use Manning's to solve for the capacity of an outlet pipe ( pond culvert )...
