Popular posts from this blog
More St Venant Equations in #SWMM5
This blog shows the relationship between the terms dq1, dq2, dq3 and dq4 in the SWMM5 code and the St. Venant Partial Differential Equations. dq2 = Time Step * Area wtd * (Head Downstream – Head Upstream) / Link Length or dq2 = Time Step * Area wtd * (HGL) / Link Length Qnew = (Qold – dq2 + dq3 + dq4) / ( 1 + dq1) when the force main is full dq3 and dq4 are zero and Qnew = (Qold – dq2) / ( 1 + dq1) The dq4 term in dynamic.c uses the area upstream (a1) and area downstream (a2), the midpoint velocity, the sigma factor (a function of the link Froude number), the link length and the time step or dq4 = Time Step * Velocity * Velocity * (a2 – a1) / Link Length * Sigma the dq3 term in dynamic.c uses the current midpoint area (a function of the midpoint depth), the sigma factor and the midpoint velocity dq3 = 2 * Velocity * ( Amid(current iteration) – Amid (last time step) * Sigma dq1 = Time Step * RoughFactor / Rwtd^1.333 * |Velocity| The weighted area (Awtd) is used in the dq2 term of the St...
Types of Stormwater Inlets from HEC12 and HEC22
Note : Types of Stormwater Inlets from HEC12 and HEC22 Stormwater Inlets consist of four main types ( http://onlinemanuals.txdot.gov/txdotmanuals/hyd/storm_drain_inlets.htm ) with most common shown in Figure 1. 1. Curb opening inlets either at a sag or continuous on the street, 2. Grate Inlets either at a sag or in combination with a Curb opening 3. Slotted Drains in parking lots which can be simulated as curb opening inlets and 4. Combination inlets either at a sag or continuous on the street which combine a curb opening inlet and a grate inlet for the stormwater runoff A sag inlet is the end of the line for the runoff because the flow and its debris load have no other place to go as described in the HEC-22 and HEC-12 manuals and a continuous grade inlet...


You will forgive me, but I fail to rolex replica sale, that given you have already taken the money from my account, and everything has been fully paid, why you need to see my visa card. The replica watches sale is in your account, you took more than you were authorized to do from my VISA Capital One card, so why can't you simply send the replica watches sale to me as they have been fully paid? Whilst I understand that you need to take certain precautions against fraud, I equally have a rolex replica sale with providing my details for the same reasons, and in particular, given that my friend Vic didn't need to provide his card rolex replica sale. As such, I don't want to waste any more of my time, so unless you can't forward the replica watches sale with immediate rolex replica uk, please credit my VISA Capital One credit card with the full amount that is due. I have to say that I am bitterly rolex replica sale with the appalling way I have been treated by your company, and the fact that you took more money from my card than you were rolex replica to do. Can you please email to confirm which action you will take, as I will need to respond accordingly.
ReplyDelete