Question....I have been offered by Company "A" to review and recommend design changes, if needed, for a concrete pad to house equipment and misc items in my state. The design is very basic and all the req'd structural notes have been called out etc. Drawing is standard concrete pad done by...
I am a structural engineer and we are proposing to build a 13 foot diameter by 2 foot thick concrete tank pad. We are placing it 6 inches below grade on top of 6 inches of clean gravel. My question is does it need to go to the frost depth to resist upheaval? In other words won't the weight of...
I have a subcontractor that installed 6x6 - W1.4xW1.4 welded wire fabric instead of the 6x6 – W6xW6. This does not meet the temperature and shrikage requirements of ACI 318.
The owner is concerned that his concrete will crack because of this error. the slab measures 6 inch deep on 1 foot of...
Where would I find the correct design loads for gymnastics rings? I'm assuming that the maximum weight of the gymnast is 500 lbs. per ring, does this seem reasonable? The problem I'm having is that OSHA requires 2,250 lbs for a fall restraint. However this is not a fall restraint type of...
Our company does a lot of cell site work for Nextel, Sprint, Voicestream, AT&T etc. (wherever we can get it nowadays) and in the process we have to state what the wind loads are for the site location. Currently we have been using TIA/EIA rev. F (march 1996). Take for example Kitty Hawk, NC...
Here's my problem, I have an existing facility that needs to reinforce its existing 6" x 12" timber beams due to failure. My proposed method is to attach steel channel shapes along the sides and bolt (6) at various locations and fasten at the ends with angles. However, the contractor...
I'm using the TIA/EIA structural standard for steel antenna towers and antenna supporting structures. My question is in regards to determining the basic wind speed. I'm analyzing a monopole tower and the site is in Newport News, VA. Which is also the name of the county (Newport News)...
Where can I find information on analyzing a prefabricated steel rigid frame building. The owner wants to use the existing framing and add a new roof and wall system. The previous systems were damaged in a fire. I'm having trouble analyzing the tapered steel columns. Any useful info would be...
I would like to know where I can find design information on seismic/wind issues with regard to tower
installation inside/on top of existing buildings.
Also why monopoles are chosen to have certain type(s) of cross-section (18 sided, 16 sided) to prevent cross-wind excitation.
Any help in the...
