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JedClampett, the "FlexTraxx Roof Track" system at the website that you mentioned Link looks like the system that may work for my project.

This particular project will require a narrow catwalk system without a guard railing along the outer perimeter of the roofs edge. The roof pitch is 1/12. I believe fall protection is required for any work over 4 feet, without an edge set back. Also, the roofs edge does not have a parapet wall...

Attachment Details http://files.engineering.com/getfile.aspx?folder=7af616c5-6149-4a9e-8fcc-09cc8a6560b0&file=Fall_Protection.pdf

I've got a Pre-Engineered Metal Bldg (PEMB) with the typical steel rigid frames, Z-purlins, and standing seem metal roof. The job is to install Solar Panels on the roof with S-5 clamps attached to the standing seem roof (see attachment), and maintenance crews will have to routinely access and...

I may have answered my own question with TABLE 21.2.2 of ACI 318-14 Output file of LPILE gives tensile strain values suggesting compression controlled, and I'm not using spiral reinforcement. So Phi = 0.65 seems appropriate? Still interested in feedback. Thanks

Hi, I am running Ensoft LPILE, to check the structural strength capacity and to design the reinforcement in a non-cased round bored shaft. I'm running the "Non-linear EI Only Mode" and creating a interaction diagram. The program can provide a graph of the interaction curve (Axial thrust force vs...

Hello, I am inquiring if anyone knows of any guidance that simplifies (with conservative equations) the complex soil structure interaction of deep foundation groups? I am looking for guidance that has hand calculation equations for the distribution of the vertical & lateral loads on the deep...

Hey everyone, The project location actually is in a shop with 12 ft tall roll up doors, and vehicle bays. So a small drill rig should be able to back into the locations. Sorry for confusion. I intentionally left out some details to see if anyone had some ideas on innovative...

Here are the two details. http://files.engineering.com/getfile.aspx?folder=45c4f7f6-f065-4a84-a7fd-d4e102ddcf39&file=Details.jpghttp://files.engineering.com/getfile.aspx?folder=45c4f7f6-f065-4a84-a7fd-d4e102ddcf39&file=Details.jpg

Hello everyone, I would like to know what types of small equipment are available to drill 3 ft diameter drilled pier foundations to a depth of 10 ft within an existing structure? Is there anything on the market that can fit through a standard door width? Drilled piers will extend through a...

Another monkey wrench to throw into the discussion. The bridge is in a high seismic area, and was designed prior to the implementation of seismic design criteria and grandfathered in. Load rating is for gravity loads only per AREMA. Risks for the potential of seismic damages is currently...

Any guidance available for estimating the remaining service life of existing bridges? Customer wants this information to program future repair/replacement funds. I have a 75 year old railroad bridge with steel stingers controlling the load rating in flexure, with no section loss or corrosion...

So your interpretation of pier vs bent sounds similar to mine. For example, a drilled shaft/caisson foundation that extends as a continuous member above grade as the structural vertical framing member, would be labeled a pier. Similarly, a driven pile or group of piles in a row that extends...

I have seen timber bridges with timber pile piers, and timber framing members spanning the piers are tipically referred to as stingers. I am unsure of the differences in the terms "Pier" and "Bent", both are used intermittently. However, I'm under the impression that a pier is a continuous...

I would use the term beam for cross members between the stringers. I would use the term "Bent Cap Beam"; and agree with you that the bent cap should not be labeled a girder. I've heard of the vertical bents being referred to as piers also. It appears this bridge could be labeled as having...

Please observe the bridge section attached. In technical report would you use the term girders or stringers for the members spanning between bent caps?

Can someone explain to me the difference between stringers and girders? I've got a project involving a concrete bent railroad bridge with multiple steel stringers/girders for the super structure framing. It appears the terms "Girder" and "Stringer" in the bridge industry are used intermittently...

Thanks for the responses guys.

I have a project where the PV panels are rated to be walked on. So I wouldn't throw-out the live load. Also, on Pre-Engineered Metal Buildings, even though the dead load from PV and the racking system is about 4 psf, it's still kicking off the IBC requirements. So be aware of this when dealing...

I'm interested in the ACI 530 code requirements for steel lintel anchors into masonry (CMU) walls. ACI 530 Chapter 7 Seismic Design Requirements 7.3.2.8.1 states: Horizontal reinforcement shall be provided at the bottom and top of wall openings and shall extend at least 24 in. (610 mm) but not...