I am presently working as a contract employee for a small structural engineering firm and have been told that I am covered by their professional liability (E&O) insurance policy. I don’t believe that this is typical. While I understand that whether I'm covered or not would be determined by the...
I'm in the initial design stages of a 40-foot span x 18-foot roadway box beam bridge (which will be subject to loads greater than HL-93) and have two questions:
1. Would either of the two (file attached) superstructure configurations have an advantage over the other for design or...
I've been presented with a problem concerning an existing tied-back diaphragm (or slurry) wall in which an additional excavation to 15 feet below the bottom of the wall is required. One solution put forth is to place an additional diaphragm wall at the face of the existing, extending down to a...
I find myself in the position of needing to assess the load carrying capacity of an existing 132" diameter RCP that will have an additional 10 feet of compacted fill placed over it to serve as a levee.
The 1972 record drawings indicate only that it falls under the requirements of ASTM C76, but...
Here's a new one for the books:
I've been asked to propose on design and construction services for a 40,000+ SF PEMB that was originally manufactured for a location and end use that are different from that required by the present owner. The components are crated up on the new site and need a...
As you may see from the attached sketch, I have an interesting problem related to the design of a prestressed box beam bridge incorporating a large roadway radius. I have three concerns (at least until that time when I realize that I really have many more):
1. What should I do about the...
Here's some background for my question:
I recently transferred to a new city where I had hoped to conclude my career with the federal government while attempting to gradually segue into the consulting arena. I had previously done some part time consulting in other states and usually had more...
I'm in the process of starting a consulting business (just me with my wife helping out with the administrative stuff) and was wondering what others used for contract documents. ASCE and ACEC have template documents but they seem pretty expensive. Any advise?
I just realized that my continuous perimeter roof diaphragm blocking will render the architect's ridge/soffit vent system useless. Duh.
Any suggestions?
-Jack
I'm designing a sluice gate structure with a ledge(?) at the top of a deep reinforced concrete box. The ledge is about 20 feet long and will have two point loads occurring about 10 feet apart at the gate lift locations. My question concerns design method - should this be seen as a cantilever...
As part of a building project I've designed steel face hangers for connection of glulam beams to concrete tie beams on a cmu wall.
The contractor has asked to use all-threads, instead of bolts threaded on both ends only, through the glulams in the fabricated connections.
I'm not certain as...
I'm in the initial stages of the design of a pre-engineered metal building foundation and have just received the soils report. The report indicates 2 to 4 feet of sand (SP) and then organics laden sand (SM/OL) to about 18 feet. The report suggests a c.i.p. structural slab and beams on timber...
I'm involved with a wind load analysis of a building built in 1987 and am trying to determine the uplift capacity of the roof support structure. The building has interior and exterior cmu bearing walls and a lightweight concrete deck on vent forms attached to bar joists of various spans at 4 ft...
