HASS v8.3 1. The 2007 NFPA 13 Standard has indicated the roughness values for piping in inches rather than feet as shown in previous NFPA standards and used in previous HASS releases. The Darcy Pipe Table shipped with this release of HASS has adjusted the values accordingly; however, this does not update existing dws files to the new roughness values, only to the new units. Please verify the roughness values on your existing dws files. 2. A new feature for calculating an equivalent pipe for a complex system such as a grid has been included in the utilities. Please see the help file for Complex System Pipe Equivalent. 3.a. The discharge coefficients (k factors) for Darcy Weisbach calculations now have a provision for adjusting the k factor for viscosity as well as density in order to provide a more accurate flow rate of more viscous fluids such as propylene glycol/water solutions at low temperatures. Viscosity adjustment calculations have been made in accordance with a method requiring the diameter of the nozzle. Selections for the calculation mode (Density or Density and Viscosity) can be made in Options-Parameters and the sprinkler diameters can be found and adjusted if necessary in Options-Sprinkler diameters. b. IMPORTANT NOTE!: Since the viscosity adjustment for k factors was added as indicated in 3a (above), NFPA 13 (par. 22.4.4.5.1) has been revised to require a "density only" k factor adjustment in which case all calculations made in accordance with NFPA 13 must presently use the density only option in HASS; however, this is presently under review. Please check with reviewing authority. 4. For your convenience, the option to enter source or end node data first can be selected in the 揈dit Options?menu. 5. A new Utility feature for calculating the approximate maximum static pressure at nodes throughout a system data file (sdf) has been provided. The routine is especially useful to determine possible overpressure or regulator settings, where permitted, on high rise building sprinkler and/or standpipe systems. 6. A new "Lock Box" utility has been added which automatically places "saved" personal data such as pipe tables and cover sheets to a folder under the root directory with recovery, if needed, from the "file" menu. 7. A new sprinkler system volume calculator utility has been added to determine the volume of dry pipe or antifreeze system piping. 8. A new system Job Cost estimator program has been added with access from the tool bar. The program can estimate the installation cost of a sprinkler system from a data file, Grid Estimator, Tree Generator, System Builder in addition to direct keyboard entry of materials from a user generated inventory of time and materials. The inventory file accompanying the program is for information only and should not be used for accurate cost estimates. The program includes the ability to generate assemblies such as risers which can be entered as a single item but reported with individual components. 9. An additional function which enables the user to create translated data entry and report text headers for other languages has been added and can be accessed through Options-Edit Translations. 10.An additional option has been added to the HASShouse program which permits a separate maximum flow rate calculation in addition to the required flow rate calculations. The purpose is to provide the user with the ability to determine the maximum flow rate from sprinklers closer to the source than the remote area where a pump may create negative suction pressures and fail, especially where a reduced pressure backflow preventer is in the supply line. Also, the total flow from a sole supply suction tank is calculated for the required duration. 11.A minimum source pressure feature has been added to HASShouse with the ability to modify it as desired on the initial data entry page. 12.A new pipe table page is provided for CPVC Schedule 40 pipe for HASS and HASShouse which can be automatically added to open pages in the existing Standard.pip and the standard.npt tables during the initial operation of the program. The purpose of the new page is to replace questionable manufacturers equivalent fitting data in the existing Blazemaster tables. If desired, the existing table page for Blazemaster pipe (manufacturer of the cpvc extrusion materials) can be removed in the HASS program by editing the pipe table page and then selecting Edit|Clear All. 13.A new pressure reducing or regulating valve (PRV) calculating routine has been provided with access from the data entry task bar. The prv is typically a diaphragm motor operated globe or angle valve which reduces the pressure to a desired value for hose stations or sprinkler systems in accordance with NFPA 13 by throttling the valve to the desired downstream pressure. When the friction loss in the wide open globe/angle valve exceeds the pressure reduction setting of the valve, the pressure loss in the device is based on the friction loss in the wide open globe/angle valve. The equivalent fitting lengths for the wide open globe/angle valve are located in a special table found in Options/Edit PRV fitting loss. 14.New on K factors for viscous fluid discharge as indicated in 3 a and b above! The NFPA 13 standards committee has dropped the requirement for modification of k factors for fluid density discharge and standard water discharge coefficients are now to be used for low temperature antifreeze solutions. No changes in the fluid flow pipe calculations are proposed in which case Darcy Weisbach calculation procedures must still be used for pipeline friction loss calculations. A switch modification has been added in HASS to permit calculations of the discharge coefficient to be selected on the basis of "water", "density only", or "density and viscosity". The default is the standard k factor for water. Please check with the reviewing authority particularly for locations where NFPA standards may not apply. 15.Driscal in HASShouse has been reworked to provide easier access to test flow pressures and flow rates and selection of drill sizes or nozzles. Nozzle k factors are typical sprinkler values in which case a more accurate flow rate can be obtained by selecting a standard sprinkler such as k=8 or k=11.2 and removing the release assembly and frame. By establishing the flow rate and pressure at the base of the riser with HASShouse calculations, the total flow rate of sprinklers and domestic demand can quickly be duplicated with the test drain and a couple of good test gauges. 16.HASShouse data directory is not set upon receipt of software and should be set at the time of inital use. It is suggested that a location be set under the root directory such as C:hhousedata(m). 17.An alternative method for calculating velocity pressures has been included in the Options|Edit System Parameters dialog box for determining the pressures at side outlet tees on the basis of the energy loss from the flow through the top of the tee to the downstream pipe rather than the normal pressure in the upstream pipe as described in NFPA 13. This method is referred to as "the HASS method" and should "NOT" be used for NFPA calculations. The reason for the alternative method is to provide a means for comparison of results where the use of normal pressures on the flow from side outlet tees is excessively reduced and to provide a uniform method of determining the discharge from all flowing outlets and side outlet tees. 18.A secondary set of calculations has been provided for minimum end head conditions which will provide minimum available source pressure at full flow conditions. Situations which may be affected include booster pump arrangements from public water supplies requiring a minimum source pressure such as 20 psi (2.7 bar) where minimum end head flow conditions restrict the flow rate. This reflects the adequacy of the supply but not conditions which may create negative or low pressures on public mains,including reduced pressure back flow preventers. In addition to providing the minimum source pressure with a note in the report, a second sdf data file is created with an extension of "FF" for preparation of a full flow report. Although we recommend that the secondary calculations be used for all minimum end head condition calculations, a switch (Options/Edit System Parameters/Full Flow Calcs) is provided to turn this feature "off" if desired. 19.Although not related to program operations, a suite of data entry files for HASS and some of the utilities, has been included in the program package in the folder "HASS DATA EXAMPLES" for aiding in data entry training. 20.The extrapolated values of flow tests for the source supply curves for public water systems have been revised and printed as dashed lines in the water supply graph, similar to the presentation in the flow test examples in Utilities. The purpose of the dashed line is to indicate flow rates beyond the flow test point, which may be less than indicated particularly on public water systems supplied by pumps or on circulating systems where the indicated static pressure is actually a residual pressure. 21.A new method of calculating static pressures in the Utility "Static Pressure Calculator" has been incorporated to better accomodate "listed" pressure reducing valves equipped with relief valves. 22.The fixed pressure loss device selection has been revised to include a check valve in which case the direction of flow must be indicated with the inlet node being first and the outlet node being the second. This change resulted from situations in which the higher elevation of system nodes created balancing problems in some cases. This change is not affected by the "enable check valve" option in system parameters which affects only standard check valves. 23.HASShouse has been revised to include a requirement for all fixed pressure loss devices and pumps must be designated seperately from other fittings and devices with a one ft. (.3 meter) pipe section. An automatic full flow calculation will also be made and stored with FF added to the original data file name. This has been included to locate problems which may occur with booster pumps and reduced pressure back flow preventers. 24.VERY IMPORTANT REVISION! As the result of problems in balancing of the flow calculations in some systems involving pumps, prvs, and fixed pressure loss devices, the best solution became the forcing of the direction of flow in these devices by entering the inlet and outlet nodes from left to right. The other requirement is a check valve in the pipe connected to the outlet node of each pump. In summary, all fixed pressure loss devices (reduced pressure backflow preventers, meters, double check valves, etc.), pressure reducing valves, pumps and pipes with check valves must have the inlet nodes in the first node column of pipe data entry and the outlet node in the second column. Each pump must have a check valve in the pipe connected to the pump outlet node as is normally the case. The "Enable check valve" option in Option|Parameters has neen removed as all directional devices and check valves will be enabled. 25.A method for automaically converting the 3 point HASS pump curve to a 5 point User Curve has been included as an option in Options|Parameters. The curves stop at the overload pressure and flow rate or last point on the 3 or 5 point curve and then drops to 0 psi.