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I recently upgraded to RISA 3D V19 and I am trying to link my RISA Section file to my RISA 3D model. In the previous version, "tools" was at the top of the menu bar and I was able to click and find the tab to browse for the RISA section file I had created for the project. Does anybody know how...

Thank you!

I have another question and this is in a more general level and related to the output. I have been told to apply service loads in Lpile for the program to generate the moment, shear and deflection curves. To look at the Mult vs bending curvature graph to determine max moment from soil profile...

I am using LPILE version 6 to check an existing acip pile and I have a couple of questions: - When I select the "Use Load and Resistance Factors" option, a warning comes up that says the following: "Piles with elastic sections cannot be analyzed using LRFD analysis because moment capacity is...

thank you all for the links and responses!

Thanks, Dik - That is very low strength. Is there a chart somewhere? I am also looking for the equivalent of today's 5000 psi converted to WSD

I would really look into possible vibrations from your air compressors and resonance with the structure.

Looking at existing dwgs from the early 60s which list fc = 1,350 psi for reinforced concrete - what is the equivalent of working stress 1,350 psi to today's? Also, what is the equivalent of today's 5000 psi concrete strength to working stress? Is there a chart somewhere I can use and keep...

I am designing a drilled shaft to bear in a soil layer the geotech recommends modeling in Lpile as "weak rock". The allowable end bearing pressure given for this layer is 14ksf (= 97 psi) and for input in Lpile the compressive strength= 50 psi, RQD 20% and k rm value = 0.0007. I run LPile and...

I am using theta = 5 and k = 5 and received a warning that my value for theta is unreasonable (should be between 28 and 48). The program runs and a typical report is generated with the warning. If I run LPile neglecting the frost layer, the moment and displacement are larger when compared to...

I am modeling the upper frost layer in LPile by making the lateral resistance close to zero (I am using the actual weight of the soil). LPILE runs a report with the warning that my phi value is outside the range. My question is, can the output still be trusted for everything else even if...

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Looking at an existing drawing from 1946 of a 6-inch slab-on-grade calling out #42 mesh for reinforcement. Does anybody know its characteristics or equivalency to today's product? Thank you,

Thanks for the replies. I have wall and ceiling thickness information from the physicists. I am looking for information on mix design, joint placement, construction requirements, etc. Not sure if there is a spec out there like ASTM C637-20

Is anyone familiar with specs, codes, standards involved in the design of concrete structures shielding from medical equipment's radiation? I found ASTM C637-20 and I am looking for additional references to guide the design. Thank you

Thank you!

I am currently evaluating the composite floor beams of an existing building from 1964. Does anyone know what the typical steel grade of studs was at this time? Thanks,

Thanks for all the input - I found on ASCE 7-10 section 1.4.3 that the minimum lateral load applied to any structure is 1% of the dead load, which seems low for industrial applications. I assume there will be forklifts in the vicinity of the platform, but as far as I know they will not be...

I am designing a 25-ft tall structure for equipment inside of a warehouse. There are no windows or roll-up doors in the room where the structure will be located, therefore wind loading is not considered. Project is in SDC A, so seismic loads are very low. And no dynamic loads are expected from...

retired13 Great find - Thank you!