I am a retired Civil Eng. with a piece of property where I have two known property pins. I need to locate the others and wonder if I can use a GNSS Land Meter to locate the others. I have tried to use GIS sites to locate the GPS coordinates or longitude and latitude without much luck.
I have a very old CPI Transit Level. I purchased a tripod for it that has 5/8" male threads that screw into a transit. My TL has 11/16"male threads that would screw into the top of the tripod. How do I attach TL that is intended to screw into the top of a tripod to a tripod that has threads...
At one time concealed hangers with a pintle were used for glulam connections. The first & second edition of the AITC manual show examples in their typical construction detail section (AITC 104-65).
As far as I know, this tye of connection is no longer used. I suspect the reason is that a...
I'm a structural engineer with a friend, who is asking what is the maximum number of people, that her deck can safely support.
What I am trying to do is find an article that answers this question. I did several internet searches and could not find one.
The articles I found all took the deck...
Is any one aware of a design procedure to determine the allowable bending stress of a Nailed Built-Up Beam laterally unsupported except at the ends.
The NDS has provisions for Nailed Built-Up Columns but I have not found any provisions for beams.
I would think the use of the same reduction...
I have heard this term used in reference to the use of a 1/4" fillet weld, to weld a 1/4" plate to a thicker plate. The AISC specifications indicate the maximum size of a fillet along edges of material 1/4" in thickness or greater, is 1/16" less then the thickness of the material unless the...
The Carnegie Pocket Companion-1923 which SlideRuleEra has talked about before, gives design values for wood.
Those design values are quiet high, so I am unsure of how to apply them for use in evaluating wood from a building built in early 1900. Does anyone have any suggestions?
I am trying to...
I have a plan for a building constructed in 1954 that shows LSJ 225 & LSJ 242 joists. I am unable to find them listed in the SJI 60-Year Manual. Is any one familair with this type o f joists?
While going through "The Procedure Handbook of Arc Welding" from The James Lincoln Arc Welding Foundation, I've come across a weld symbol I can't find identified in the book.
The symbol is shown in Fig. 2-65 on page 2.1-32. The text states that "Fig. 2-65 shows the proper way of specify how...
Over the years I have heard some interesting arguments about what falls under the practice of engineering and what does not. I've know non-registered engineers who offered design services. They always argued that they were not offering engineering services, just providing designs. I always...
I am specifying some A449 solid rods with 2" of thread on each end. I have a table from American Fastener that lists bolt & nut specifications. In the table it lists A449 bolts but no AA449 nuts.
Do I specify an A449 nut? Or do I specify an A194 2H nut, which like an A449 bolt, is medium...
I have a 3/8" x 7 1/2" x 1'-2" plate subjected to compression. When I look at Chapter E & Appendix B of the 9th Edition of the Steel Manual, it seems that all the provisions apply to elements supported on at least one edge such as stems of tees and beam flanges.
What I have is a solid...
As a structural engineer with a background in steel building design I am very familair with A325 bolts but not SAE Grade 5. It is my understanding that the A325 specifications are a little more restrictive than the Grade 5 specifications.
For the applications I am looking at the connections...
Does the tensile strength of A449 bolts vary by diameter? I know that you use a different tensile strength to design bolts 1" and under than you do for 1 1/2" to 1 3/4".
For example, when designing 1 3/4" diam. to 3" diam bolts you based the design on a minimum tensile strength of 90 ksi...
A post on the structural engineering portion of this forum about Parallam got me thinking about the difference between Parallam and glulam.
When you specify Parallam does the supplier provided shop drawings? Is the Parallam shop fabricated or field fabricated?
I work for a glulam fabricator...
I am designing a joint which forms an L shape with a 3/8" vertical Leg and a 3/4" horizontal leg. On this joint one corner of the vertical plate is touching one coner of the horizontal plate. I am calling for a 1/4 fillet to fill out the outside area where the two plates touch. I am using a...
I am working on a project where a 6 3/4" wide timber truss sits on top of a steel column. I need to detail the connection to allow for 5/8" lateral truss deflection.
In the type of work I do this is not a very common detail. I have only used this type of detail once about six years ago. At...
I have a design application where I am unsure as to whether or not I have to take bolt bending into account. After reading the postings on this forum and the fact my bolt is so much larger than the attachment plates, I don't think bolt bending is a concern.
One posting explained that beam...
I have an application where I am overlapping steel plates at a truss joint in a timber truss. I am using a 2" dia. A490 bolt so that the joint behaves like a pinned connection. The nut is shop installed finger tight so the bolt doesn't develop any clamping action.
In this application A490...
I attended a seminar last week presented by Lawrence A. Kloiber of LeJeune Steel Company Minneapolis, Mn on practical connections using the 2005 AISC. I work for a glulam fabricate and design glulam connections. However I could relate very well to his discussion on the use of actual loads.
He...
