The tank is an agricultural tank that stores grain. If you've ever worked with ag sector jobs, you'll know these owners most often don't care one iota about appearance of the finished product. They just want a repair at the lowest possible cost. The tank is actually in good condition despite...
The casue of the spalling is the insufficient concrete cover provided at orignal construction. With such a thin colver, through either solar expansion or stress concentrations at the hoop steel, the concrete has developed hairline cracks at the locations of most hoop steel members. That...
Anyone have any insight of the correct method of concrete restoration for the following scenario:
A reinforced concrete tank, about 40 years old, has several areas experiencing spalling. The owner wants to address this problem becasue the spalling has become so prevalent, that it is now a...
I'm reading through ASCE 55-10, Tensilie Membrane structures, since I 'm reviewing a design for a simple arch style tension membrane building. I'm trying to figure out the intent of Life-Cycle Factor, Secton 4.4.2. As I read through the section, I get the impression this life cycle factor...
Thanks for the replies thus far guys! I've finally got some additional information on the tank. 3 million gallon cpacity, 120' in diameter, and 36' in height. Constructed with 1/2", 3/8", and 1/4" steel plates. Original design documents state it was designed according to API 650, 10th Ed...
Here is a pic of the damaged tank. Currently only have one picture. Hopefully I'll get additional pics in the ocming days showing the roof...http://files.engineering.com/getfile.aspx?folder=c1d141ef-647a-40ab-a927-1f87f39cebb6&file=tank_damage.JPG
Is anyone aware of best pracitces, publications, standars, or anything that addresses risk managment strategies against wind damage for large welded steel tanks that are sitting empty (or near empty). We are in an area that produces a lot of ethanol and current market conditions have been such...
Thanks guys. This problem is form the latest and greatest edition of the NCEES sample exam (printed in 2010).
Anyone know where in the steel manual the 0.75 factor is coming from? I've looked through Chapter F in the specifications and can not find 0.75 listed in any of the cases?
Hello All -
I'm doing some studying for the PE exam in only 4 short days. There is one aspect of a practice problem I'm working on that is not makng sense to me. The problem is: one leg of a A36 L6x6x3/8x6" steel angle is fastened to a concrete wall with an expansion anchor. The other leg...
For these types of repairs - What type of glue do you recommend for your OSB/LVL repair, Jim? Are we talking wood glue, construction adhesive, something else?
Thanks
Question regarding how to interpret Tables 2306.4.5 (Allowable Shear in Shear Walls) in IBC ’06:
Are allowable shears given in the table assuming only one side of the wall is sheathed?
For example – let’s say you have shear wall sheathed with 5/8” gyp board (single ply), blocked, fastened 7”...
So, if I am understanding correctly, the CERM manual that many have mentioned is only covering the AM breadth section of the PE exam? Will I need additional study material beyond the CERM for the afternoon depth section?
As far as the afternoon exam...I am still undecided. I work as a structural, but my firm does pretty simple, routine building structures - No complicated buildings where I work.
I've heard the structural afternoon test is pretty intense, so I guess I'm a little intimidated by that.
There seems to be a great deal of PE Exam preparation material avaialble now days. ASCE, PPI, Kaplan, NCEES, and others all publish exam preparation material. Some of it is very expensive, i.e. the ASCE CD-ROM materials.
From any of the recent PE exam takers in the forum, where there any...
