I am using AASHTO LRFD and IDOT does not have conventional longitudinal reinforcing in their PPC IL-Beams, but IDOT does consider bonded prestressing strands as sufficient in resisting the temporary tensile forces in prestressed concrete before losses…

Hi all. How is non-linear material analysis n RM Bridge understood? Best regards.

hi all, I have a few questions as follows: 1. During the construction of cable-stayed bridges, does the Traveler of Main Girder stiffness model always have to be considered for cable-stayed bridges to increase the stiffness of Kn girders? 2. If…

Hi all. How does RM Bridge consider the effect of cable sag? Best regards.

Hi all. In the design of a cable-stayed bridge, what is the allowable displacement of the A and H shaped towers under live load? Best regards.

Hi all. Can you tell me what the allowable deflection of a suspension bridge is? And what standard is this deflection limit based on? best regards.

Hi all. In composite steel girder bridges with concrete decks (continuous span bridges), does RM bridge automatically Calculator effective width of deck to calculate short-term and long-term composite cross-sections? best regards.

Hi all. I hava some question about steel composite brige as follows: 1. To calculator stress point of section, Rm Bridge automatic use short-term section for live load and load case type Non-permanent and use long-term section for load case type Permanent…

Hi all. In continuous beam structures, the allowable downward deflection of the bridge under HL93 load is L/800. So may I ask what is the upward deflection of the continuous bridge structure under HL93 load? best regards.

Hi all. in steel girder bridges combined with concrete decks (continuous span girder bridges). If the concrete deck is not in tension and the combination of internal forces according to the Service limit state is service.sup, then use the ReloadSup function…

Hello all, I currently have a bridge with 3 spans in OBD. In span 1 and 3 I'm using concrete girders while in span 2 I'm using built up steel girders. I will be using LEAP Steel to design the steel girders and Leap concrete for concrete girders. My question…

Hello - I am modeling hammerhead piers in RC-Pier Version 20.00.00.58. EQ/ES/LS loads are applied at the bottom of the column with a user-defined seismic load combination. For some piers, the seismic shear output at the top of the column shows Combo …

I've an OBM 3D bridge 'design' model setup file 'SteelBridgeReplacement.dgn'. Using this file I have created mutliple 'drawing' models (Plan, Elevation, Typical Section, Pier Geometry, etc.) in a separate file (planProductionBase.dgn) by referencing the…

Has anyone else had this issue? I can run an analysis and nothing gets flagged in the "Under Design Report", but after looking at the Strength V Limit State reports there are failing members in Shear. Also I have attached an example picture of what the…

Hi, I'm trying to model a bridge which is very usual in Spain, prestressed concrete slab with variable edge and circular holes to make it lighter (see pictures below) Section with minimun edge, situated on center of span and with circular holes. …

Hello. I'm wondering how LEAP Version 21.01.00.22 calculates the maximum axial load displayed in the diagram. The diagram displays a maximum axial force allowed of 1802 kips. As expected the 1802 kips doesn't change regardless of the load combination…

Hello. My pedestrian Load is 90 psf. My bridge width is 16ft. I am trying to apply 1440 plf load as pedestrian load and its a simply supported girder. Span length is 130 ft. Based on hand calc the moment in the center is 3042 kip ft. But the load shown…

I am performing a load rating of concrete box girders. The rating factors/tons is not displayed since the Inventory Design Load Rating Factor > 1. Is there an option to make the program display the factors even if the RF is greater than 1 or is that information…

Hello, I have 95 ft long and 12 ft wide abutment footing on 2 rows of piles. Abut stem is 88 ft long. How is the Leap program calculating Dist (ft) , dv, Vu and Phi Vc for X and Z ? I will appreciate the response. Thanks,

There does not appear to be a way to model a built-up plate girder diaphragm in OpenBridge (I have to place diaphragms between adjacent girders - I cannot skip a girder, and I cannot model a built-up section), or to model a substringer system. I see notes…

How does LEAP Conspan apply multiple presence factors if live load distribution factors are entered manually? If distribution factors are entered manually, is it up to the user to apply the multiple presence factor to the manually inputted distribution…

Hello again, I have other question, I tried to conect OP model with RM Bridge but the program send me an error, I don't know how can I fix it Do you know how to fix the error E0053? or give an idea of what this Error E0053 wants to tell me

That means the Restart iterations continue to the end, either to tollerence setting or to "No convergence". This is a fault in the last version(s). Rgs Arne Bruer (COWI Norway).

Hello, I have a problem in the beam section analysis. I assigned rebars to the beam but the program says I have "0 Ast_prvd" at the transfer location and I want to know if there is any way to fix this or if there is a special setting I should look for…

Hi everybody! I started working with OpenBridge Designer few weeks ago. I am still getting to know the software but I realised I need some guiding in producinig drawings. I finished modelling a segmental bridge without reinforcment, and I'm not very…