For slabs on grade, most of the design methodologies (those in ACI 360) assume an interior loaded condition for concentrated wheel/post loads. Even with looking at the document "Load Testing of Instrumented Pavement Sections - Improved Techniques for Applying the Finite Element Method to Strain...
We are evaluating an existing triple truss system (see attached photo), and are finding that the members are getting close to capacity, with some reasonable assumptions regarding wood type. However, we have very little information on the plated truss connections. Does anyone have any...
I have a hollow-core precast slab that was installed circa 1985. We have the structural drawings, that indicate the slab is 6", with a 2" structural topping. The slabs are 2' wide, so we suspect it is a Flexicore. We have the design loads, but unfortunately, the design loads work for even the...
Does anyone have a catalog for the Macomber Double V Joists (V sections for both the top and bottom chord), with load tables? I can find plenty of information on the V Beams (V section top chord and B section bottom chord), but nothing on the Double V Joists. Thanks in advance for any assistance.
I recently completed a site visit for a project we are handling in Baltimore, MD (one story, CMU bearing walls). During this visit, we took various measurements of an existing open-web joist, and found a joist tag (see attached photo). The joist has LL2x2x3/16" top chord, LL2x2x3/16" bottom...
I've searched high and low, and haven't had much luck finding section properties for steel channel bar stock. I've searched the internet, called various manufacturers, and nothing. Does anyone have this information available? I don't need weight per foot, and know how to calculate these...
I've looked far and wide throughout the AISC 6th edition, but haven't had any luck. Does anyone know what ASTM specification shear studs for composite construction conformed to in the early 1960's, when composite construction became published by AISC? In particular, I'm looking for the...
Our firm is going after a number of building design projects in Bulgaria. Unfortunately, our design expertise in Europe is limited, and there aren't many resources available on the internet (at least in English) that reference which Building Codes have been adopted throughout Bulgaria. Does...
I have a client that has inquired if I would be interested in signing and sealing drawings prepared by a steel fabricator. As part of the process, I would review these drawings, make any necessary comments or markups, and then review the revised set. I realize that as a professional engineer I...
We are starting up a project in which we will be performing a load rating of a pedestrian bridge - a covered bridge, actually, that won't be subject to vehicular loading. Does anyone have any guidance as to what uniform loading equates to a number of people? If the bridge is adequate for an 85...
I am looking for some literature on the analysis of round columns that are composed of various materials. I looked at the AISC 13th edition (Concrete-Filled Tubes/Encased Tubes), ACI 318-63 thru ACI 318-05 (Reinforced-Concrete Columns for both working stress and ultimate design), and even a...
I've been searching endlessly for this book, as its the only one I need to complete my collection. I've tried all sorts of web companies, but to no avail. What's odd is that, although it took some searching, the first edition wasn't nearly as difficult to find. Does anyone know if the Second...
We are currently analyzing a ground-supported water tank that was designed and manufactured by Pittsburgh-Des Moines in 1959. It is our intention to perform an analysis of this structure using the AWWA D100 standard that was current at that time. Does anyone know the year of that standard and...
We are currently in the process of analyzing a steel base plate for a telecommunications monopole, and have stumbled across a reference to Horn Formula A. Does anyone have any information they could provide on this? If so, it would be more than appreciated.
We recently completed an inspection of a structure constructed in 1969 that is in need of renovation, and have the tags of all the installed joists, which are designated "Macomber-V-Beam". Among other information on the tags, the ID numbers on some of the tags are as follows:
28E 40 0 U
18D...
