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I'm checking anchor bolts on a flat-bottom welded steel water storage tank that has a 42' diameter, and is 106' tall. It has (8)-1.375" anchor bolts, some slightly corroded. With the tank built in the 1950's, I'm assuming that it was only designed for wind (not seismic). The tank appears in...

Site Class is a soils related category, and should be provided by the Geotechnical Engineer. One with experience should be able to interpret the soils information without performing any expensive shear wave velocity tests. This is one of the reasons that I like to get a Geotechnical Engineer...

A common total deflection limit of l/240 for that span would equate to a little over 2" at mid-span. While large deflections doesn't necessarily mean member failure, other factors could be influenced by the large deflections (such as roof ponding).

PEinc, Thanks for the info. You've been most helpful.

Does anyone have a railroad code (maybe AREA) that would have requirements on the frost depth for a concrete cantilevered retaining wall along the railroad tracks? The site is just south of Boston, Massachusetts.

I have a client that has an existing one-story store that was originally designed for a second floor. They want to put on the second floor now, but want to keep the first floor store operational during the construction. Is there any OSHA regulations that prohibits keeping the store open below...

Pulling motors out of the race car again? W8x15 should work quite nicely. It has a little extra flange width to pull off the bottom flange. Provide some sort of restraints at the ends to prevent rotation of the beam. That will be $125, please.

Get the practice exam from the company that gives the FE exam. I also found the FE more difficult than the PE, more because I took it 10 years out of college. The afternoon session was easier than the morning, so don't be discouraged at the lunch break. Start studying 4 weeks prior to exam...

On a 5-story, loadbearing wall building, does the loadbearing wall qualify as a "column" or a "beam" when determining live load reduction? (I believe the equation is similar in most codes)

In the northeast US, it is required for certain size buildings to have a peer review performed. This is an independent design check hired directly by the owner, and is quite common here. For the most part, these reviews pick up minor items that were overlooked on the Construction Documents...

If you're going to use #3 rebar, I wouldn't go any further than 18"oc with the rebar, since local cracks may form. That's why wwf works well because the grid spacing is close. A better way for residential construction is to add Fibermesh to the mix. Good crack control and no hassle of...

The most information that you can obtain from an existing house is from the basement and the attic (unless you tear holes in the walls and ceilings). Go to the attic first and see if you can see the attic floor joists spliced over the load bearing wall(s). Then go to the basement and check the...

I'm getting testing results from grout used in pressure-grouted auger piles, and the 7-day results reflect approximately 50% of the desired 28-day requirements, but the 28-day breaks are all fine. Is this typical of grout? Concrete usually yields approximately 70% of design strength at 7 days...

Project is lower west side (Greenwich St. & Hubert St.).

I've been asked to do a preliminary design on a new 9-story building in Manhattan. The building footprint is only 4000sf. My initial tendency is to use a structural steel frame, but the client had been led to believe that a concrete frame would be cheaper and faster to build. I personally...

Does anyone have any published values for lally columns for house design?

In reference to wind loads on parts of buildings, what exactly is considered a "component and cladding". Specifically, would you consider a non-loadbearing masonry exterior wall (or a precast concrete panel) a "component and cladding"? By strict definition, it would be yes...

If anyone has "Factory Mutual Property Loss Prevention Data Sheet" No. 1-28 in a pdf format, I would greatly appreciate it if you email a copy. Thanks in advance, Zulak email: calbino@blcom.com

I have an old "Ceco" catalog from 1967, but it doesn't specifically relate the info on the tag to a particular joist. I can fax you the sheet if you give me fax number. You may be able to determine what each number or letter on the tag means by some assumptions.

Proper expansion joints between the concrete and the masonry are crucial, and can be retro-fitted. Single-wythe masonry will always be a problem in wet areas, so the best solution is to add a veneer with a cavity to control the water infiltration. Also check roof parapets, since this is an...