Hi, Dear All, I have a question regarding pile cap footing flexure design. The required bottom rebar area is 23.53. However 36.00 needs to be provided for the effective area 23.56. I checked RC-Pier tutorial for the LRFD footing design and I didn…

Hi, Dear All, I have some questions regarding the "live load generation details". First, it tells "values of live load generated at each bearing point are shown with impact factor". I did some hand calculations and I found actually these values…

Hi, Dear All, If I calculate live load caused bearing reaction directly as input for RC-Pier, I should consider multiple presence factor and should not consider impact factor in these reaction forces. Am I right? Please let me know. Thanks. …

Hi, Dear All, I have a question regarding "superstructure parameters" in RC-Pier. Say the pier I am designing is the middle pier in a two-span bridge. Am I right in the following input? Should I put 1 or 2 there? Is this related to "upstation"/…

Dear All, For the load combinations, there is a "parameters" button. For load dependency, we have two options, one is "cross combinations", and the other is "dependent load case combinations". For example, if Braking Load depends on Live Load…

I am using Leap Bridge Enterprise v14.00.00.09 in a Win7 environment. When I open the Geomath and Conspan modules, they work fine. When I open RCPier, it gets to a screen which says "Loading Project File" and then crashes, and it sometimes gives me a…

The attached file shows the output from the cap design module of RCPier v14. Can you tell me why there is a point where phi*Vn=504 and Vu=72.5 yet phi*Vn < Vu? Is this result spurious or is there a reason for this? Also, how can I tell what the most…

How does RC Pier calculate the lateral pile resistance for battered piles? Thanks.

I am designing an abutment using RC Pier. Under the Loads tab, I input/generate EV & EH loads. However, when I run an analysis and review the load combinations the vertical or horizontal earth loads are all "0". It appears that these loads are being applied…

We are working a substructure design in which, due to the geometry of the roadway, it may be necessary to have the column rotated at an angle from the orientation of the pile footing on which it sits. In the past we've had to handle this via calculation…

I'm desiging a pier wall with a cap on top. The wall is about 2'-6" wide and the cap is 4'-6" wide (side view). The "Wall Pier" option does not allow a cap. The "Multi-Column" option requires a minimum of two-columns. I've input two wall columns but the…

I noticed my live loads were larger when I auto-generated them in RC-Pier than compared to when I imported them from Conspan. Is there a reason for this? This yields a more conservative pier design, but is it accurate? Thanks.

I'm modeling a PC/PS Girder Bridhge in LeapBridge, Conspan and RC-pier, based on California amendments to AASHTO. I am able to import my Vehicular LL and Fatigue LL from CONspan into RCpier, but RC-pier isnt letting me import the Permit Loads. Do you…

One of the new features added to the latest RC-PIER is the comprehensive auto-generation of WS loads and load combinations per the FDOT SDG 2013: An option for WS load auto-generation is now offered under the “Loads” tab. FDOT strength and service…

A few RC-PIER users recently asked questions about the two analysis options in the abutment design and the related footing design reports. Here is some clarification. In abutment design, when "Cap as continuous beam" is selected for the frame analysis…

When manually inputting live loads into RC-Pier, how do you specify a lane load. According to the help.... "For manually input live loads in AASHTO LRFD, this screen behaves slightly different. When a live load case is added in LRFD mode and edited, the…

In Load Tab->Combination, user can let the program automatically create load combinations (load combs) or user can customize load combs. But the program auto-generated load combs is very limited, I have to create combs one by one, it's very tedious. Hope…

I have created a model of the roadway in Conspan and then generated the loads and exported them into a text file. I have also created a model of one of the piers for that bridge. When I go to import the loads from the text file I receive an error message…

Hello all: I am having an extremely difficult time getting through my bridge design on LEAP bridge. Especially while working in GEOMATH and RC PIER. In GEOMATH: Problem #1: Back when I was trying to make minor adjustments to the geometry of the…