MDX Software - New Features

6/19/19	New command WINDGAMMA for specifying the load factor gamma for wind in LRFD projects which can be used to set this according to the 6th edition 2016 interims. [6.5.4189]
8/20/17	New command IGNORE APPENDIX A6 to keep the program from considering LRFD Appendix A6. [6.5.3518]
8/20/17	New command ALLOW MOMENT REDISTRIBUTION which is now required to make the program consider LRFD Appendix B6 on moment redistribution (replacing the old command IGNORE MOMENT SHIFTING, i.e. the default behavior now is not to consider Appendix B6 moment redistribution.) [6.5.3518]
1/27/17	New commands to override program's calculation of Cb. See BLTCB, BLTCBLOC, TLTCB, TLTCBLOC in online help. (These provide more functionality and replace LTCB and LTCBLOC.) [6.5.3113]
1/27/17	New command PBETAOP for permit truck load factor to be applied specifically to operating rating. (Existing command PBETA applies only to inventory rating.) [6.5.3113]
6/7/16	A command CATEGORY E' FATIGUE AT CONNECTIONS has been added to the LRFD bracing module. [6.5.3080]
3/18/16	Two commands DETAILED CALCS FOR POSITIVE BENDING STRENGTH AT LOCATION [x] or DETAILED CALCS FOR NEGATIVE BENDING STRENGTH AT LOCATION [x] have been substituted for DETAILED CALCS FOR BENDING STRENGTH AT LOCATION [x]. [6.5.2991]
1/16/16	A new command IGNORE TENSION FLANGE WIDTH LIMIT has been added for LFD. [6.5.2937]
9/4/15	A new command DETAILED CALCS FOR CB AT LOCATION xxx.xx has been added for LRFD. [6.5.2804]
5/26/15	Use of TRKLANES for ADTT modification in LRFD system girder no longer necessary. [6.5.2702]
5/25/15	The LFD rating table now displays a separate table for overload ratings. [6.5.2701]
3/14/15	Service II lateral bending stresses now listed in LRFD Factored Bending Stresses table. [6.5.2629]
3/6/15	A new command DETAILED CALCS FOR ALLOWABLE BEND BUCKLING AT LOCATION xxx.xx has been added for LRFD. [6.5.2621]
3/6/15	A new command DETAILED CALCS FOR BOX GIRDER SHEAR STRESS AT LOCATION xxx.xx has been added for ASD. [6.5.2621]
2/6/15	Additional shear in LRFD line girder models caused by skew at the obtuse corner now distributed over half the span as in (4.6.2.2.3c) of the seventh edition. [6.5.2593]
9/25/14	The data item SKEW in LRFD line girder projects has been replaced by MRTHETA and VATHETA to improve user control for application of 4.6.2.2.2e and 4.6.2.2.3c. [6.5.2460]
6/2/14	A new command DETAILED CALCS FOR NEGATIVE PLASTIC MOMENT AT LOCATION xxx.xx has been implemented for LRFD girder input. [6.5.2345]
6/2/14	A new command DETAILED CALCS FOR POSITIVE PLASTIC MOMENT AT LOCATION xxx.xx has been implemented for LRFD girder input. [6.5.2345]
4/29/14	A new command DETAILED CALCS FOR ALLOWABLE BEND BUCKLING AT LOCATION xxx.xx has been implemented for LRFD girder input. [6.5.2311]
2/11/14	The data item FILSPB has been implemented for a bolted flange splice filler plate that is not the same width as the flange plate. [6.5.2234]
1/28/14	A new command DETAILED CALCS FOR LANE FRACTIONS AT LOCATION xxx.xx has been implemented for LRFD girder input. [6.5.2220]
8/20/13	A new command CATEGORY D FLANGE FATIGUE AT WEB SPLICES has been implemented for LRFD girder input. [6.5.2059]
6/11/13	A data item BNGPL for bearing plate length has been added for LRFD girder input which will produce a web crippling stress check table for rolled shapes. [6.5.1989]
5/29/13	A data item UBS is added to permit a value other than 1.00 to be specified for block shear rupture resistance in LRFD (6.13.4-1). [6.5.1976]
5/9/13	A data item PINVRAT is added to specify the load factor for LRFD Strength II inventory rating. If not given only the operating rating will be tabulated. [6.5.1956]
3/21/13	Medium and high resolution plate and eccentric beam models now add additional nodes on the girders as well as higher definition plate elements. [6.5.1907]
2/21/13	A new command DETAILED CALCS FOR SHEAR CONNECTOR SPACING AT LOCATION XXX.XX has been implemented for LRFD girder input. [6.5.1879]
2/18/13	A condition IL-120 DESIGN TRUCK has been added for LRFD line girder and system projects which will substitute the Illinois toll road IL-120 truck for the HL93 design truck. [6.5.1876]
2/18/13	The data item LTCBLOC followed by a list of locations from the left abutment will assign the Cb value 1.0 at each location instead of that from an LRFD expression. [6.5.1876]
11/13/12	The condition IGNORE 2003 SPECIFICATION PLATE BUCKLING CONSTANT LIMITS has been implemented for LFD box girders. [6.5.1779]
8/12/12	The condition APPLY PBETA FOR OVERLOAD RATINGS has been implemented. [6.5.1747]
8/4/12	The third load path (C4.6.2.7.1-3) of LRFD lateral bending from wind on the entire span can be ignored at user discretion with the condition IGNORE THIRD LOAD PATH FOR WIND STRESS. [6.5.1709]
7/23/12	The LRFD condition IGNORE TRUCK TRAIN FOR REACTION has been implemented to have only the negative moment over a pier affected by two trucks straddling the pier. [6.5.1666]
7/10/12	The condition HOLES PUNCHED has been implemented for net section determination in bolted web splices. [6.5.1653]
6/26/12	The program has been updated to incorporate changes reflected in the sixth edition of the LRFD Bridge Design Specifications. [6.5.1639]
6/18/12	The condition IGNORE 10.48.8.2 has been implemented to allow, at user discretion, the combined shear-moment constraint of LFD specification article 10.48.8.2 to be ignored when determining LFD factored shear strength. [6.5.1631]
5/17/12	Enhanced resolution for member forces in LRFD girder output tables of girders consisting of simply supported stringer segments. [6.5.1589]
3/12/12	A new command DETAILED CALCS FOR LANE FRACTIONS AT TP (followed by tenth point)) has been implemented for LRFD line girder project input. [6.5.1533]
2/24/12	LRFD girder output tables have been expanded to show combined effects of HL93 and Light Rail simultaneous loading. [6.5.1516]
2/21/12	A new command ALLOW GRADE 33 STEEL TO BE COMPACT has been implemented for LFD, LRFD girder input. [6.5.1513]
1/23/12	A new command DETAILED CALCS FOR WEB SPLICE LOCATION (followed by location in ft,m) has been implemented for LFD, LRFD girder input which will tabulate detailed calcs for the bolted web splice at the given location. [6.5.1484]
1/9/12	The LRFD force summary table now combines HL93 and defined truck effects if the defined truck is the only loading in the critical lane of a system project. [6.5.1470]
12/28/11	The condition TWO PERMIT TRUCKS STRADDLING PIER can be used in the LRFD system analysis model for max negative moment and reaction from a nonstandard truck. [6.5.1458]
10/31/11	WBETACON is available for LFD and LRFD girder input to set the load factor for construction wind loading at other than the default of 1.00. [6.5.1400]
10/25/11	The parameters Q and I are now listed in the LRFD shear connector tables. [6.5.1394]
9/9/11	Documentation is now hosted on the website and the interface launches web-based help in the default browser. [6.5.1348]
7/26/11	Allowable web bend buckling stresses are being compared with LRFD Service II stresses in permanent deformations table if governing. A new conditIon INCLUDE WEB BEND BUCKLING IN RATING TABLE will include them in the Service II rating table. [6.5.1303]
7/7/11	LRFD rating tables now display both allowable stress for noncompact shapes and moment capacity for compact shapes. [6.5.1284]
5/11/11	The condition REMOVE FORMS AFTER EACH POUR has been implemented for girder input. [6.5.1227]
5/9/11	The data item TANDEMP has been implemented allowing the two axles of the HL93 tandem truck to be separately set at any two values, including a value of zero for one of the two axles. [6.5.1225]
5/9/11	The condition WISDOT EXCEPTIONS has been implemented in the LRFD girder program to enable the Wisconsin DOT exceptions to AASHTO listed in the WISDOT Bridge Manual. [6.5.1225]
4/14/11	The data item FATRNGFACT has been added for LRFD bracing input to reduce the stress range to allow for the low probability that two trucks in adjacent lanes would simultaneously be placed in optimal locations for maximum stress range as described in C6.6.1.2.1. [6.5.1200]
3/14/11	The condition IGNORE THIRD LOAD PATH FOR WIND STRESS has been implemented in the LRFD girder program for use if the user judges construction bracing or curvature is sufficient for (C4.6.2.7.1-3) to be ignored for the wind effect from bending of the entire span. [6.5.1169]
3/3/11	The data item LTCB has been added for setting the Cb factor in the LRFD allowable lateral-torsional bending stress expression to a given value. [6.5.1158]
3/1/11	A table has been added at the bottom of the bolted web splice tables which is generated when DESIGN WEB SPLICES is used. This table shows data input items represented by the generated design as an aid in converting data input to bolted web splice analysis mode for modifying the generated design. [6.5.1156]
2/16/11	A data item LFKG has been implemented as an override for the LRFD Kg expression used for determining lane fractions in line girder projects. [6.5.1143]
2/1/11	The LRFD table Incremental Factored Bending Stresses table for Pour 1 where wind loading has been used has been extended to show lateral bending stresses from wind loading separately. [6.5.1128]
10/12/10	The condition INCLUDE LANE LOADING IN PERMIT TRUCK FOOTPRINT is available for girder system input and LRFD girder input. Only active if permit truck is overlayed with uniform lane loading. [6.5.1017]
10/4/10	Changes in the LRFD specification represented by the Fifth Edition, 2010, have been implemented. [6.5.1008]
9/4/10	Rolled shape data has been updated to that in the AISC Manual of Steel Construction, 3rd Edition, 2001. [6.5.978]
8/18/10	The data item ECFACT is now available for modifying the default value of 1.0 for K1 in concrete modulus of elasticity in LRFD (5.4.2.4-1). [6.5.961]
6/1/10	The condition LRFR RATINGS now can be used in bracing input. [6.5.883]
2/22/10	The two conditions TOP FLANGE BOLTS NOT STAGGERED and BOTTOM FLANGE BOLTS NOT STAGGERED have been implemented as alternatives to FLANGE BOLTS NOT STAGGERED. [6.5.784]
2/22/10	The data item CENTRIF now can be used in girder system input for user defined centrifugal effects on unbalanced wheel loading instead of the default specification expressions. For example, a value of 0.15 will increase one wheel on an axle by fifteen percent and decrease the other wheel by fifteen percent. [6.5.784]
2/11/10	LFACT now can be used for ASD and LFD girder system projects. [6.5.773]
1/4/10	The condition FLOAT ALL LANE COMBINATIONS in system input will separately float all subsets of a given number of lanes and use the max effects from all floats. For example if three lanes are defined then separate live load effects are determined from floating a single lane, then two lanes, and finally three lanes. [6.5.735]
10/21/09	The condition MNDOT EXCEPTIONS will increase the max negative moment and reaction at the pier from truck-train loading by 10 percent. [6.5.660]
9/12/09	PBETA can be used in bracing input. [6.5.651]
7/6/09	The condition APPLY 2008 INTERIMS FOR FATIGUE has been implemented for LRFD girder input. The default is fatigue criteria of the 2009 interims described in LRFD 6.6.1.2.3 which can increase the fatigue truck load factor from 0.75 to 1.50 depending on detail category and average daily truck traffic ADTT. [6.5.553]
7/6/09	The 2009 LRFD interims have been implemented. [6.5.553]
6/1/09	Total bracing weight by bay is tabulated in bracing output Stiffnesses tables. [6.5.518]
5/11/09	The LRFD girder condition IGNORE NEGATIVE MOMENT SLAB FOR PERMANENT DEFORMATIONS is available which will not use the slab as permitted by 6.10.4.2.1. [6.5.497]
4/6/09	A new girder input data item TFORMFCT for a multiplier applied to noncomposite dead loading for constructibility tables representing weight of removable forms. [6.5.462]
3/10/09	A new condition NONCOMPOSITE SLAB IS NOT CONTINUOUS BRACING was implemented for girder input. [6.5.435]
1/8/09	Tables for service moment and torque for each of both steel and concrete added to girder ouput in system projects. [6.5.374]
12/29/08	The data item HTR-i has been added to tag those hinges having no torsional resistance. HTR-i is followed by a list of integers where 0 represents a hinge on girder "i" having torsional resistance and "1" as having no torsional resistance. [6.5.364]
12/9/08	LFD rating table now shows both bending and shear ratings for each location. [6.5.344]
12/8/08	Concurrent live reactions have been added to the table of max and min live rotations in girder system ouput. [6.5.343]
12/8/08	STAGFCT has been added for girder input as a stress multiplier to represent the increase due to staggered bracing. For example, STAGFCT 1.10 would increase stresses by ten percent. Will not change stresses in exterior girders or interior girders not braced by staggered braces. [6.5.343]
11/19/08	TFACTF has been added to modify the LRFD fatigue vehicle wheel loads. [6.5.324]
10/30/08	Three data items, GCONNETC, GCONNEDG, GCONNEBC, given by group have been implemented for Bracing Input representing connection eccentricity for top chord, diagonal, and bottom chord. Allowable axial forces will include the effect of such eccentricity. [6.5.294]
10/20/08	The data item FY also can be used in the bracing module input as an alternative to using ASTM designations. [6.5.294]
9/22/08	New data items FPENDT, FPENDB, FPEDGET, FPEDGEB have been added for flange splice plate end and edge distances if different for top and bottom flange splices. FPEND and FPEDGE continue to apply the same values to both flanges. [6.5.265]
7/25/08	A flange splice data item EDGEF has been added for the distance from the center of the hole adjacent to the splice to the edge of the flange. Default is EDGEW. [6.5.207]
7/14/08	The condition RATING TABLE FOR SHEAR ONLY has been added for LFD girder input. [6.5.196]
6/24/08	A table has been added to girder system output which shows torsional and flexural support rotations with respect to girder local axes as well as rotations about global axes. [6.5.176]
6/20/08	WINDTSTEEL has been added in girder input to determine box girder internal bracing forces for the Steel + Wind Load table. [6.5.174]
5/30/08	A condition COMPOSITE ACTION FROM FRICTION now available for girder input at user's discretion. [6.5.151]
4/30/08	A new data item SCRATIO can be used in girder data to designate the ratio of struts to cross frames for determining box girder internal bracing forces. Default is 2. [6.5.121]
4/28/08	LRFD lane overlay for permit vehicle (PRLANE) and system factor for rating (PHIS) can now be given by span in girder system projects. [6.5.119]
4/23/08	Data items ADTRUSS and ASTRUSS have been added to respectively define areas of the diagonal and strut of a box girder horizontal truss for determining forces in the Internal Factored Bracing Forces table. [6.5.113]
3/19/08	A condition FULL DESIGN TRUCK PLUS LANE FOR DEFLECTIONS has been implemented to use the full design truck plus lane overlay instead of 0.25 design truck plus lane overlay for LRFD deflections. [6.5.79]
2/25/08	A condition IGNORE CURVED GIRDER HYBRID RESTRICTION has been implemented to permit hybrid LFD girders when using the 2003 curved girder specification. Used at user's discretion since this represents a technical violation of the specification. [6.5.56]
1/18/08	By default a rating table in bracing output is generated only for curved systems where braces are considered main members. A new condition LIST RATING TABLE FOR STRAIGHT GIRDERS will do the same for straight girders. [6.5.18]
1/16/08	Conditions CATEGORY D FATIGUE AT END OF BOTTOM FLANGE STIFFENER and CATEGORY E FATIGUE AT END OF BOTTOM FLANGE STIFFENER have been implemented for LFD fatigue tables. [6.5.16]
1/3/08	A table for fatigue truck max torque and torque range has been added to girder system output. [6.5.4]
1/3/08	A table of internal lateral bracing and internal cross frame forces has been added to box girder output. System projects only. [6.5.4]
12/24/07	STFGAPCP has been added as a data item (in. or mm) for a setback location for a fatigue check on connection plates. Useful if the end of the connection plate is connected to web or flange with a bolted connection. [6.3.358]
10/31/07	SVPBETA is a new data item which can be used to change the LRFD Service II load factor for permit vehicles from the default of 1.3. [6.3.296]
10/31/07	The weight table has been revised and updated to include the weight of extensions beyond the end bearings. Extension weight also is reflected in end reactions. The default length is 1.0 feet (.3048 m), but can be changed with a new girder input data item: GDREXT. [6.3.296]
8/1/07	LRFD rating tables have been expanded to show separate tables for Strength I, Strength II, and Service II loading effects. [6.3.213]
7/5/07	A new condition DOUBLE ANGLES SAME SIDE OF GUSSET for bracing module input. Tension area for double angles reduced only if used (AASHTO 10.9.1). Double angles straddling the gusset is now the default. Effective for ASD and LFD only. [6.3.186]
6/15/07	A new LRFD condition ACTUAL END PANEL LENGTH FOR SHEAR BUCKLING K available to avoid the large shear strength penalty when the end panel stifferer spacing is only slightly larger than half the web depth. Employed at user's discretion. [6.3.166]
5/29/07	A condition NYSDOT EXCEPTIONS has been added to use alternatives to AASHTO LRFD specification requirements where differences exist in NYSDOT Bridge Design Specifications - 2007. [6.3.148]
5/23/07	A condition COMBINE STANDARD AND PERMIT EFFECTS has been added to bracing input data. This creates tables labelled HS+Permit or HL93+Permit effects instead of separate tables for standard and permit effects. A warning is issued if both standard and permit loading are simultaneous in the permit lane in girder system analysis. [6.3.141]
5/23/07	A condition OMIT 10.57 OVERLOAD CHECK has been added to bracing input data. [6.3.141]
5/21/07	Live load torque range has been added to service torque table in girder system output. [6.3.141]
4/2/07	LIVE LOAD ONE DIRECTION ONLY added as a condition for girder system and line girder projects. [6.3.92]
2/28/07	New girder system analysis condition: INTEGRAL SUPPORTS EXCEPT FOR STEEL ANALYSIS [6.3.59]
2/12/07	Required area of internal cross frame diagonal in curved box girders tabulated in Dimensions table. [6.3.43]
1/30/07	A490 BOLTS has been added as a condition for LFD and LRFD girder input. [6.3.30]
1/22/07	TRKLANES has been enabled for bracing input. [6.3.22]
12/27/06	The condition AVERAGE SIDEWALK LIVE LOAD DEFLECTIONS has been implemented to have the deflection from sidewalk loading shared by all beams. LRFD line girder projects only. [6.2.361]
12/21/06	The condition INCLUDE PEDESTRIAN LOAD FOR MULTIPLE LANE FACTOR now can be used for LRFD line girder projects as well as system projects. [6.2.355]
11/28/06	Four new data items used for determining additional forces on critical bolt in flange plate splice bolt pattern from lateral bending due to curvature. SPACTF and SPACBF are longitudinal bolt spacing for top and bottom flanges, GAGETFW and GAGEBFW are gages from center of web to nearest longitudinal line of bolts. [6.2.332]
11/20/06	Variable slab extensions (ft,m) now can be given with the data items SLABXR and SLABXL in girder system input, each followed by lists of values by tenth point. The former is for extensions off of girder 1. TSLABW data in girder input using these values are generated only in Layout Mode. [6.2.324]
11/13/06	A condition A7 STEEL now can be used in bracing input. [6.2.317]
11/10/06	A condition EXCLUDE LOAD MODIFIERS FROM RATING EQUATION added if load modifiers in LRFD 3.4.1 are not to be included in factored effects when determining inventory or operating ratings. Default is to include modifiers. [6.2.314]
11/8/06	Data item IMPACTP added for LRFD loading which overrides the default 1.33 dynamic allowance factor for permit loading. [6.2.312]
10/25/06	Data item STEELFACT added as an alternative to increasing steel self weight by the tenth point with WAS. STEELFACT will factor all steel self weight by the same amount. For example, STEELFACT 1.1 will increase steel self weight by ten percent. Can be used in both system and girder input. [6.2.298]
10/24/06	Incremental and total torque now also is shown in the sequential pouring tables "Dead Forces, Deflections for Girder i, Pour j" in girder system output. [6.2.297]
10/17/06	The condition COMPACTNESS FOR POSITIVE MOMENT ONLY has been implemented in LFD and LRFD girder modules. Limits strength to first yielding in negative moment regions. [6.2.290]
9/27/06	The column length factor KCOL as an override to default values now can be applied to LRFD and TO LFD when the 2003 curved girder spec. is used. [6.2.270]
8/28/06	The data item SLABPRP has been added for the location of the centroid of positive moment reinforcement from the bottom of the slab. Default is 2/5 of the slab thickness. Used in girder input. [6.2.240]
8/4/06	A condition COMPOSITE AT PIER FOR STIFFNESS ANALYSIS ONLY has been added which uses the slab for stiffness analysis but does not use rebars over the pier for stress checking. Effective only if composite/noncomposite regions are not defined. Used in girder input. [6.2.216]
7/28/06	Force Summary tables have been added to girder output which show all shear and moment service effects in the same table by tenth point, span quarter points, and brace locations. [6.2.209]
7/11/06	A new data item TSSPFT has been implemented with which intermediate stiffener spacing can be given in feet or meters. [6.2.192]
6/22/06	Previous girder system conditions involving unbolted bracing for specific analyses have been superceded by: 1. BRACING NOT BOLTED AT ABUTMENTS FOR NONCOMPOSITE DEAD ANALYSIS 2. INTERMEDIATE BRACING NOT BOLTED FOR NONCOMPOSITE DEAD ANALYSIS 3. INTERMEDIATE BRACING NOT BOLTED FOR COMPOSITE ANALYSIS 4. INTERMEDIATE BRACING NOT BOLTED FOR STEEL ANALYSIS with the advantage that any or all of these conditions can be used simultaneously, in contrast to the previous forms where only one could be used at a time. The previous forms remain active, but will not be maintained in documention. [6.2.173]
6/12/06	A new condition, CONCURRENT REACTIONS BY LANE, is available to tabulate contributions by lane to concurrent reaction values. [6.2.163]
5/24/06	A new condition, OVERSIZE HOLES, is available for bolted web splice design and analysis (LFD, LRFD). [6.2.144]
4/25/06	A new condition OUTSIDE FLANGE PLATES ONLY is available for girder input files when bolted web splices are used (LFD, LRFD). [6.2.115]
3/13/06	A new condition CATEGORY C' FATIGUE is available for the bracing input file. [6.2.72]
3/3/06	Multiple presence factors can be modified by inserting the data item MLFACTORS, followed by four values, into the system analysis input file. Default values are 1.0 1.0 .9 .75 for LFD and ASD, and 1.2 1.0 0.85 .65 for LRFD. [6.2.62]
2/23/06	A data item BNGSKEW has been added to the LRFD girder module to give orientation of bearings with respect to the web. Used to determine if bearing skew is within limits to permit redistribution of negative moment. Skew is 90 deg if perpendicular to web. [6.2.54]
2/21/06	Top and bottom flange gages for web splice analysis now can be given separately with GAGETF and GAGEBF. [6.2.52]
2/20/06	The 2006 LRFD interims have been implemented as of 2/20/06. [6.2.51]
1/30/06	A data item FLGTRANS, for flange transitions, has been implemented to move the stress check on the weak side of a flange splice a distance away from the splice. Units are inches or mm. [6.2.30]
1/23/06	Thirteen new W36 heavy shapes as described in ASTM A6 and available as of 1/1/06 have been added. These range from W36x231 to W36x800. [6.2.23]
12/31/05	A new condition, DIAGONAL INTERSECTION RESISTS BUCKLING, prevents horizontal translation of the intersection for types A and E cross frames. The length for buckling about the vertical axis then is half the length of the diagonal. [6.1.365]
12/26/05	A new data item, TRKLANES, has been added to the LRFD and LFD (using 2003 curved girder specification) girder modules to determine 'p' in LRFD Table 3.6.1.4.2-1 for use in ADDT(SL)= p x ADTT. [6.1.355]
11/10/05	A new data item, STFCLEAR, for the minimum clearance between a splice location and the nearest web stiffener. A warning message is generated if the distance is less. Default is 12 inches. [6.1.314]
10/24/05	The condition LIMIT INTERIOR STIFFENED PANEL TO WEB DEPTH sets the panel length limit at web depth for the web to be considered stiffened under the 2003 curved girder specification. If not used, the panel length for a web to be considered stiffened can be extended to 3D as radius increases beyond 700 ft. (eqtns. (6.2) and (6.7b)). [6.1.297]
10/24/05	Data item GAMMACON has been added to allow LFD and LRFD contructibility load factors to override default values. [6.1.297]
9/12/05	Conditions MCMANUS SIGN CONVENTION and DABROWSKI SIGN CONVENTION to control the sign of the lateral bending/primary bending stress ratio (fw/fb) for determining allowable stresses in curved girders. The former assigns a negative sign to the ratio and the latter a positive sign. The McManus convention is the default for the 1993 guide spec. and Dabrowski the default for the 2003 guide spec. (See 2003 guide spec. commentary pg 33.) ASD and LFD girder input data only. [6.1.255]
9/7/05	Data item DWGAMMAMIN added to LRFD girder module to allow user to specify a factor for wearing surface component of reaction uplift other than the 0.65 of Table 3.4.1-2. [6.1.250]
8/30/05	Contributions by lane for max LL+I reaction shown in girder system reactions table. [6.1.242]
8/29/05	LFD rating table includes rating at intermediate stiffener locations, which are flagged with 'S'. [6.1.241]
8/22/05	WIND now also applied to bottom flange for incremental pouring tables and noncomp dead wet concrete table. WINDT applied to top flange of incremental pouring tables in regions where concrete is not yet cured, and top flange of noncomp dead wet concrete table. [6.1.234]
6/7/05	A condition INCLUDE COMPOSITE DEAD LOAD IN 2003 CURVED GIRDER UPLIFT CHECK has been added for cases where noncomposite dead load is other than future wearing surface. LFD only.
5/16/05	The condition FLANGE BOLTS NOT STAGGERED is available for the LFD and LRFD girder modules for use in determining block rupture strength in flange plates at web splice locations. A staggered pattern is the default.
5/9/05	A data item BBDL has been added to tag individual bays where bracing is unbolted for self weight loading.
5/3/05	Individual lanes can now be viewed in the girder system viewport as well as the entire set of lanes.
5/2/05	A condition INCLUDE SLAB AT PIER FOR SHEAR CONNECTORS has been added to use uncracked composite slab over the pier for spacing shear connectors in straight girders.
4/15/05	Factored connection forces (shear, moment) now tabulated in bracing output for bracing defined with GROUPI.
4/4/05	New condition for girder system projects: PERMIT TRUCK IN ALL LANES. Loads the permit truck in all lanes instead of only that lane closest to the girder for which effects are being determined.
4/4/05	New condition for girder system projects: THREE LANE LIMIT ON MULTILANE FACTOR FOR DEFLECTIONS. A lower limit of 0.85 is used for the LRFD multilane factor when applied to deflections instead of 0.65 for four or more lanes.
3/23/05	New conditions for girder system projects: TYPE 3 PERMIT LOADING, TYPE 3S2 PERMIT LOADING, TYPE 3-3 PERMIT LOADING. These represent the legal loads shown in Figure 7.4.3.1 of the AASHTO Manual for Condition Evaluation of Bridges. Loading is applied as described in section 7.4.2.
3/21/05	The condition PERMIT TRUCK IN ALL LANES has been added for system projects. This is in contrast to placing it only in the lane closest to the girder for which effects are determined.
2/28/05	Strength II (LRFD) and Group IB (ASD, LFD) tables for permit loading added to bracing output.
1/3/05	The condition CATEGORY D FATIGUE AT CONNECTIONS is now available for bracing input data,and CATEGORY D BASE METAL FATIGUE AT FLANGE FACE for LRFD girder input data.
11/8/04	new data item: PHIC (Specification Settings) Purpose: Used to specify the condition factor for LRFR ratings. -> Given in LRFD girder input (.Gi, .Ri) Condition factor phi(c) in section 6.4.2.1 of the Manual for Condition Evaluation and LRFR of Highway Bridges. Default is 1.0.
11/8/04	new data item: PHIS (Specification Settings) Purpose: Used to specify the system factor for LRFR ratings. -> Given in LRFD girder input (.Gi, .Ri) System factor phi(s) in section 6.4.2.1 of the Manual for Condition Evaluation and LRFR of Highway Bridges. Default is 1.0.
10/4/04	The following data items have been added to include flange plates at bolted web splice locations: GAGEF, FPEND, FSPBSP, NLINEF, TFOSPB, TFOSPT, TFISPB, TFISPT, NBLTT, BFOSPB, BFOSPT, BFISPB, BFISPT, NBLTB. See Help System for definitions.
10/4/04	new condition: INCLUDE PEDESTRIAN LOADING FOR MULTIPLE LANE FACTOR (Analysis Settings) Purpose: Used to determine multiple lane factor in LRFD girder system projects. -> Given in girder system input (.GSA) Pedestrian loading acts as an additional lane for the purpose of determining multiple lane loading factors according to LRFD 3.6.1.1.2.
9/21/04	new condition: 2004 LRFD SPECIFICATIONS (Girder Definition) Purpose: To use the third edition (2004) LRFD specification. -> Given in girder input (.Ri) The 2004 LRFD Specification (third edition) is used for stress checking. If this condition is not given, the 2002 LRFD specification (second edition) is used by default.
8/24/04	Shear and Moment tables in girder system output now show contribution by lane toward total.
8/23/04	new condition: PERMIT TRUCK IS ONLY LOADING IN PERMIT LANE Purpose: Prevents AASHTO truck from being considered as a possible alternative loading in the permit lane. -> Given in girder system input (.GSA) A given permit loading is placed in the lane nearest to the girder for which live effects are being determined. By default the AASHTO (or HL93) loading also is applied as a loading in that lane, and governing effects from the two types of loading used. This condition causes the permit loading to be the only loading considered for that lane.
(4/26/04-7/15/04)	new condition: CLASS A SURFACE (Girder Definition) Purpose: Used to indicate surface condition between flange plate and flange at web splices -> Given in girder input (.Gi, .Ri) Class A surface for slip critical bolts (standard holes) used to connect flange plates to flanges at web splice locations. (Default)
(4/26/04-7/15/04)	new condition: CLASS B SURFACE (Girder Definition) Purpose: Used to indicate surface condition between flange plate and flange at web splices -> Given in girder input (.Gi, .Ri) Class B surface for slip critical bolts (standard holes) used to connect flange plates to flanges at web splice locations.
(4/26/04-7/15/04)	Bolted flange splice plates now are designed along with web plates when the condition DESIGN WEB SPLICES is used. (LFD, LRFD)
(4/26/04-7/15/04)	new condition: DISCONTINUOUS AT PIER FOR NONCOMPOSITE DEAD LOAD (Layout Definition) Purpose: Used to place a hinge at the support node on each pier for all girders which is used for noncomposite dead loading only. (Not applicable to Line Girder Projects.) -> Given in girder system input (.GSA) Creates a hinge at each pier for noncomposite dead loading.
(4/26/04-7/15/04)	new condition: LRFR RATINGS (Specification Settings) Purpose: Used to select ratings method. -> Given in LRFD input file (.Gi, .Ri) Uses the rating method described in the Manual for Condition Evaluation and Load and Resistance Factor Rating (LRFR) of Highway Bridges.
(4/26/04-7/15/04)	new data item: PRLANE (Loading Definition) Purpose: Used as lane load overlay to the permit vehicle if the condition OVERLAY PERMIT TRUCK WITH LANE LOADING is used (LRFD method only). The footprint of the permit vehicle is excluded from the overlay. If the overlay condition is used but PRLANE is not given, the lane loading associated with HL93 loading is used. -> Given in girder system input (.GSA)
(4/26/04-7/15/04)	new condition: OVERLAY PERMIT TRUCK WITH LANE LOADING (Loading Definition) Purpose: Adds uniform lane loading in lane loaded with a permit truck -> Given in girder system input (.GSA) The footprint of the permit vehicle is excluded from the overlay. The lane loading for AASHTO loading used in lanes not containing the permit vehicle is used unless a specific permit uniform lane loading is given. (See PRLANE.)
(4/26/04-7/15/04)	LRFR ratings are now available for the LRFD girder module. (See "Manual for Condition Evaluation and Load and Resistance Factor Rating (LRFR) of Highway Bridges," October 2003. At this time LRFR ratings can be generated by inserting the condition LRFR RATINGS in the girder module input file with the direct editor. Otherwise LRFD ratings will continue to be based on Eq. (6-1a) of the "Manual for Condition Evaluation of Bridges."
(4/26/04-7/15/04)	Tables labelled "Strength I" now are labelled "HL93+Perm.Trk" when a permit vehicle used along with the HL93 loading. (LRFD). Tables labelled "Strength II" are unchanged. (LRFD)
(12/24/03-4/26/04)	new condition: BRACING NOT BOLTED AT ABUTMENTS FOR NONCOMPOSITE DEAD LOAD (Loading Definition) Purpose: Used for stiffness analysis for noncomposite dead loading -> Given in system analysis input Bracing at abutments is considered simply supported at connections to girder prior to concrete curing. After that time continuity is established with bolting.
(12/24/03-4/26/04)	new data items: LM-i (Loading Definition) Purpose: Used to define LRFD lane fraction for moment. -> Given in girder system input (.GSA) List of values for LRFD lane fractions by tenth point for moment if distribution is used for loading instead oflane definition. A single value given for girder i will be used for the entire girder. A lane is two wheels, thus a value of 0.9 for LM-i would correspond to 1.8 wheels. If any of LM-i, LV-i, LMF-i, LVF-i or LD-i is given, all must be given. LV-i (Loading Definition) Purpose: Used to define LRFD lane fraction for shear. -> Given in girder system input (.GSA) List of values for LRFD lane fractions by tenth point for shear if distribution is used for loading instead of lane definition. A single value given for girder i will be used for the entire girder. A lane is two wheels, thus a value of 0.9 for LV-i would correspond to 1.8 wheels. If any of LM-i, LV-i, LMF-i, LVF-i or LD-i is given, all must be given. LMF-i (Loading Definition) Purpose: Used to define LRFD lane fraction for fatigue moment. -> Given in girder system input (.GSA) List of values for LRFD lane fractions by tenth point for moment fatigue if distribution is used for loading instead of lane definition. A single value given for girder i will be used for the entire girder. A lane is two wheels, thus a value of 0.9 for LMF-i would correspond to 1.8 wheels. If any of LM-i, LV-i, LMF-i, LVF-i or LD-i is given, all must be given. LVF-i (Loading Definition) Purpose: Used to define LRFD lane fraction for fatigue shear. -> Given in girder system input (.GSA) List of values for LRFD lane fractions by tenth point for shear fatigue if distribution is used for loading instead of lane definition. A single value given for girder i will be used for the entire girder. A lane is two wheels, thus a value of 0.9 for LVF-i would correspond to 1.8 wheels. If any of LM-i, LV-i, LMF-i, LVF-i or LD-i is given, all must be given. LD-i (Loading Definition) Purpose: Used to define LRFD lane fraction for deflection. -> Given in girder system input (.GSA) List of values for LRFD lane fractions by tenth point for deflections is distribution is used for loading instead of lane definition. A single value given for girder i will be used for the entire girder. A lane is two wheels, thus a value of 0.9 for LD-i would correspond to 1.8 wheels. If any of LM-i, LV-i, LMF-i, LVF-i or LD-i is given, all must be given.
(12/24/03-4/26/04)	new condition: IGNORE SIDEWALK FOR LIVE DEFLECTIONS Purpose: Used to show live deflections only from truck or lane loading. -> Given in girder input Live deflections in the deflection table do not include the effect of sidewalk loading. (Sidewalk deflections are listed separately in the system output for system projects.)
(12/24/03-4/26/04)	new condition: APPLY SKEW FOR SHEAR ENTIRE LENGTH Purpose: Applies LRFD skew correction to entire length of girder in LRFD Line Girder Projects -> Given in girder input Correction to shear at obtuse corner from LRFD Table 4.6.2.2.3c-1 is applied to shear along entire length of girder.