var fDesc=new Array(); fDesc[0] = "HydroCalc Hydraulics is ideal for designing drainage channels and all types of culverts, including road crossings and detention basin outlets. This library of programs features the following capabilities:

- Water Surface Profile Computations Programs compute Standard Step water-surface profile for sub-critical flow in trapezoidal or circular channels.
- Normal and Critical Depth Computations for Channels - Flow velocity, velocity head, Froude Number, and more.
- Rating Curve Computations for Channels - Computes channel capacity (flow rate) for a range of flow depths.
- Culvert Analysis Using FHWA Methods - Computes inlet and outlet control headwater elevations for specified flow rate."; function tShowHide(id, show) { var s = document.getElementById("desc"); if ((s.innerHTML.length<=212 || show==1) && show!=2) { s.innerHTML = fDesc[id]; if (document.getElementById('m1')) document.getElementById('m1').style.display='none'; if (document.getElementById('m2')) document.getElementById('m2').style.display='none'; if (document.getElementById('more_txt')) document.getElementById('more_txt').style.display='inline'; } else { s.innerHTML = ''; } }