Hello,
I've never used Pipes with A53 Gr.B Steel for structural purposes, only A500, but a cliente has a supplier who sells these Pipes and he wants to use It.
I saw that the AISC Spec. considers A53 Gr.B as one of the HSS approved steels. My question is if there are some restrictions to...
Hello,
Does someone can tell me where i find some literature which describes the deductions of the equations for design of single angles under bending shown in the AISC spec.?
Thanks in advance.
Hello,
I always had a problem with the derivation of the length Lr in AISC spec. (Which is exactly equal to the Brazilian code). I never understood why the factor Cb is not considered in the calculation of Lr, since Lr is defined as the length at which Mcr= Mr.
I Friend of mine, which is a...
Hello,
The brazilian code for steel structures references the AISC's DG01 for base plate calculations and i've used it extensively, but the DG01 doesn't adress the case of stiffened base plates (At least the version that i have). I know some papers who describe methodologies for these base...
Hello,
I started recently designing for a company and was asked to design some shear connections between steel beams and precast concrete columns. The connection is very simple, composed of a two plates welded as a T at which are welded weldable rebars to be inserted in the precast columns, as...
Hello,
In this thread (https://www.eng-tips.com/viewthread.cfm?qid=157518), metengr asserts that "it is not permitted to be welded under ASME B&PV Code" relative to ASTM A193 GR B7 material. I tried to find the clause but wasn't able to.
Does anyone know what specific clause of ASME B&PV...
Hello,
In this thread (https://www.eng-tips.com/viewthread.cfm?qid=157518), metengr asserts that "it is not permitted to be welded under ASME B&PV Code" relative to ASTM A193 GR B7 material. I tried to find the clause but wasn't able to.
Does anyone know what specific clause of ASME B&PV...
Hello,
I've never used or seen round bars used as joist webs in my country but i've seen them used in some SJI catalogs and in some threads of this forum. For me, a round bar is a very bad element for compression due to it's low radius of gyration.
I'd like to knoy from you guys what are the...
Hello,
I usually use AISC's Design Guide 1 to design base plates. This design guide doesn't consider the case of stiffened base plates nor consider the possility of semirigid connection (At least the version that i have). Recently, i started using Idea Statica's stiffness analysis module and...
Hello,
I don't know if i this forum is the most appropriate for the question or the forum "Engineer Business pratices and Issues". If you guys consider that i should post there, i'll relocate the question.
I live in Brazil (Northeastern Region) and currently work only in the design of steel...
Hello,
I'd like to your opinions about tubes used as composite beams. I have the situation of a bridge composed of tubes, both columns and beams, which is partially built. It is a small bridge and it was designed initially to have timber slab over the steel tubes but the company that was...
Hello,
The SCI(Steel Construction Institute) from UK has a document called "Elastic Design of Single Span Steel Portal Frame Buildings to Eurocode 3".
This document has the following recommendations for modelling of columns bases:
- For ULS, consider the base pinned even if you use a four...
Hello,
If this forum is not the most adequate to this question, please someone inform me which one is so i can question there.
I was hired to design a steel structure to support a roof and a runway girder. This structure will be located in a sewage treatment station but will not be in constant...
Hello guys,
I'm studying AISC's Design Guide 7(Industrial Buildings Design) and i have a question about a design example of the Guide. The question is about Weak-axis flexure in the example 14.1.1. I undersand that, since the transverse impact occurs on the top flange only this flange can be...
Hello,
Studying Eurocode 1993 1-1, i've found, in topic 6.4.2.2 (Constructional details), the recommendation about the orientation of the lacing planes on built-up columns shown below.
I've never used this mutually opposed lacing system but i see it in my region with a reasonable frequency...
Hello Guys,
I have the following frame( Showing only the necessary part of the structure for the understanding of the problem). The Span is 9,00m(30ft) and the intermediate beam is suporting non-structural masonry. In order to increase the stiffness of the frame, share a part of the load of the...
Hello,
I'm studying the tutorials of Mastan2, downloaded from www.Mastan2.com, and one of the tutorials cite a tool called MSASect within the software. I've not found it on the version that i`ve download it. Does anyone knows if this tool was only available for older versions? If so, does...
Hello,
I`m from a non english speaking country and a can understand almost everything about steel structures texts, that is my practicing field, but there are some nomenclature related do roof structures(Maybe is more related do stability systems) that i have some difficulty to understand. Here...
Hello,
I'm designing a Steel Roof for a Gymnasium and the geometry required by the architect is a bit unusual. The Structure consist of 4 Main Trusses(32.5m Span and 9.32m tributary area) supporting secondary trusses. The problem arises because the roof has 5 different slopes( 2 towards one...
