Good afternoon,
I am dealing with a pretty unique situation and it seems that the use of split rings is my only option.
In CSA O86, the "J" factors for split ring capacity deal with end/edge distances. If I am looking to install a 4" split ring in a vertically nail laminated 38x140 deck face...
Good afternoon,
I am in the process of reviewing some drawings for a bridge abutment repair/rehab. The front edge of the abutment back wall has a steel nosing angle, which attaches to the concrete via alternating (vertical/horizontal) nelson studs.
Does anyone know of a design criteria for...
Good afternoon,
I can't seem to find any literature on the fatigue analysis of bolted, slip critical gusset plates. My initial assumption was that I would be comparing the stress calculated at both the Whitmore Section and the Block Shear failure plane and compare it against the category B...
So quite some time ago @tennist had a post asking for help calculating the Warping Constant (Cw) of back to back channels:
https://www.eng-tips.com/viewthread.cfm?qid=367554
I have used the equation cited, but also compared it to the formula out of Roark's Formulas for Stress and Strain...
Good morning,
I am currently working through the analysis of a series of laced/battened columns. I am using:
Guide to Stability Design Criteria for Metal Structures - Galambos
Behavior of Laced and Battened Structural Members - Lin et. al. 1970
Both the book and the paper utilize a Shear Shape...
Good afternoon,
I'm plugging away on the design of a nail-laminated wood bridge deck today and have come across two clauses that state that shear need not be checked for vertically laminated wood decks.
From CSA S6:
"Cl.5.5.8 Transverse wood deck
Only the transverse moment need be analyzed...
Good morning,
I am working on the design of a nail-laminated bridge deck and don't understand the Butt Joint Stiffness Factor, kb.
kb = (Nb - 1)/Nb
Where "Nb = a measure of the frequency of butt joints in laminated wood decks, being for any 1.0 m wide band perpendicular to the laminates, the...
Good afternoon,
I am currently looking at a nail laminated bridge deck with 2x longitudinal running boards as a wearing surface.
I have already calculated the shrinkage/swelling of the deck due to changes in relative humidity. The total deck (~42m) will experience a dimensional change of...
I Posted this on the mechanical forum as well but thought I'd move the post over here...
Good morning,
I am starting to get into structural modelling for seismic and vibration design. I have had difficult time understanding and visualizing the concepts of mode shapes, period, and mass...
Good afternoon,
I have found myself in yet another interesting place in the world of structural design. I recently have been assigned the superstructure replacement and substructure re-rehabilitation of a historic structure. I have been reading all of the associated documentation and have come...
Good afternoon,
For the past four years I have been working in consulting designing building structures. I received my P.Eng. designation last year. I have just accepted a new position as a bridge engineer and am reaching out to ask if anyone can point me in towards any great Canadian (Ontario)...
Good afternoon,
I am working through an eccentrically loaded footing problem and have some questions.
In Reinforced Concrete - Mechanics and Design (MacGregor and Bartlett), the book states:
"For the structural design of eccentrically loaded footings such as those for retaining walls or...
Good morning,
I've been in the process of building my library lately. In anticipation of a couple of upcoming jobs that will have non-orthogonal irregularities for lateral restraint, I picked up a copy of "The Analysis of Irregular Shaped Structures" (Malone/Rice). Although the book is...
I am currently working on the design of a two way slab. I have been using spSlab (Structure Point) for this. I am currently reviewing the design output for integrity steel at the columns and the numbers are very high. I discovered that the program is including the service loads from the steel...
Good afternoon,
I am currently reviewing a construction deficiency and was hoping for some additional guidance. The contractor has installed a heavy W760 that spans ~8.0 m and has introduced a sweep in the top flange of approximately 25-50 mm and has installed the precast concrete floor. This...
