I am in need of a definition for two diagrams that I am seeing on a set of steel shop drawings. One is labeled Camber Diagram and another is label "Progressive" camber diagram. Both diagrams have the same dimensionals labels, but different values for camber. Is the progressive camber a staged or...
I am in need of a definition for two diagrams that I am seeing on a set of shop drawings. One is labelled Camber Diagram and another is label "Progressive" camber diagram. Both diagrams have the same dimensionals labels, but different values for camber. Is the progressive camber a staged or...
I am looking for any major differences between LPILE Plus (for Window 5.0.30) and the newer version LPILE V6.0. If anyone has experience with the two please comment. I use LPILE mainly for Bridge Foundations lateral load analysis (concrete drilled shafts). Thanks in Advance
I am familiar with the commands that allow exporting of geopak into RDS for horizontal and vertical cards. Are there any similar commands in geopak that build cross section (transverse slope, template cards for RDS?
Thanks in advance
I am familiar with the commands that allow exporting of geopak into RDS for horizontal and vertical cards. Are there any similar commands in geopak that build cross section (slope) template cards for RDS?
Thanks in advance
Is there a check for the RESAL effect for thinned webbed members such as dapped end steel plate girders? I have seen it in reference to Post tensioning beams of varying depths, but not steel...any thoughts? TIA
I am currently walking through a bridge design for HL 93 loading for Prestressed Slab-Beams. The beams are solid (non voided) and consist of both 4 and 5 ft wide, by 15" deep, spanning 50', and topped with a cast in place 5" concrete slab. I am using cross section 'f' as my typical cross...
For bridge design with prestress concrete girders and slab deck..I have an exterior girder carrying sidewalk that is protected from roadway traffic with conc barrier. This is what I would call a barrier protected (or unmountable curb). Regardless of the sidewalk being protected from vehicle...
I am looking at the AASHTO Standard Specs Section 3.23.2.3.1.3 for design of a Prestress I beam girder type IV. I am looking at an interior beam carrying some of the load of a raised concrete median. I have always thought of a raised median and a sidewalk as being similar (concrete load on the...
I am currently reveiwing a conrete bent cap design that supports Prestressed Concrete Ty IV Girders on an 8" slab (4" topping + 4" Prestressed Panel). One side of the bent cap supports 130'+ span with 13 beams, the other side supports 70'+ span with 8 beams. The bent is...
Thanks for the reply MikeD........but does this apply to "cantilever slabs" also? This is the category that o'hangs fall under, this is AASHTO 3.25. I was reading the code as shear in the slab "between" the beams. Where the slab is continuous over 3 or more supports, not...
I am analyzing a R/C slab for a bridge deck overhang. The overhang will be fixed on one end (prestressed girder beam flange interface) and free on the other. The free end is supporting a safety shape rail (considered continuous rail). The top steel from the bridge slab runs transverse, and is...
AASHTO 2.7.1.3: Is anyone familiar with where the requirement of 10 kip rail (impact) load came from? I am investigating an 8" concrete slab overhang on a bridge as per AASHTO 3.24.5.2. Is this load crash test related(?) not truck related? Is this good for HS20 & HS25 type trucks?
Many Thanks Qshake...kudos to the MODOT for an excellent chapter to their Manual.
Several thoughts....AASHTO specs based on the Westergaard theory assumes the cantilever slab to be a rigid support, such that the moments at midspan are the same as the moments at bent lines. But for modelling...
I have been given the task to analysis a R/C slab for a bridge deck overhang. The overhang will be fixed on one end
(prestressed girder beam flange interface) and free on the other. The free end is supporting a safety shape rail (considered continuous rail). The top steel from the bridge slab...
I have been given the task to analysis a R/C slab for a bridge deck overhang. The overhang will be fixed on one end
(beam flange interface) and free on the other. The top steel from the bridge slab is the main tension reinf. for the overhang. The major load is an HS25 type truck. I am using...
