I have an existing 80' steel flag pole. 14" at the base and tapers to 3.5" at the top. The base of the pole is encased in an 8' deep sleeve, 18" dia. with 2" bank sand filling around the pipe. The base is encased in concrete and the pedastal is granite with a granite platform and steps around...
I was wondering if anyone has any suggestions for some books they recommend reading for starting your own civil engineering business?(just me) I am researching this idea but want to read up and get some ideas that would be helpful. Thanks!
Has anyone designed slabs for concrete thickness using the Portland Cement Association "Concrete Floors on Ground" method? The design charts only go up to an effect contact area of 100 sq. inches for tire loads. I was wondering what to do for larger equipement with much larger tires and lower...
I responded to a thread with these questions but thought I would put them in a new thread hoping for a better response. I have been using QuickRWall for several years now and for the most part I think it is very user friendly. I was wondering whether anyone that has been using this program have...
If I am pumping a tank of water up to a free outlet (lagoon) I was wondering if I am calculating the pressure in the pipeline correctly.
based on the selected pump curve I figure out the operating point for that pump with the system. For this example say it is 300 GPM @ 30' of total head the...
I have a 10" wall with vertical steel located in the middle. I am checking to see if it matters what side the contractor ties the horizontal steel. when calculating "d" for both locations, if the steel is located on the tension side, do I need to substract db for the vertical steel along with...
Most of the concrete manure storage structures designed that I deal with are either vertical walled rectangluar shaped or sloped side lagoons. For structures that are intended to be liquid tight, is requiring a w/c ratio of 0.45 still too high? Even though I am located in the US, I have read...
Does anyone have any other ideas that could be used for a concrete control joint in liquid-tight slabs for load transfer? I use slip dowels in conjunction with 6" PVC waterstop. The other thing used is the speed plate(basket type) with PVC baseseal. Anyone have other or better options I could...
I have a site with variable soil types. Layers of sand, silts and clays. When designing a slab on grade, how many feet below the bottom of the proposed slab should I be analyzing? There will be loaded front end loaders driving on the slab. I alway use the soil type with the lowest "k" value...
What is the best method to pour concrete on slopes up to a 2:1 that is reinforced. This appliation would be for a liquid tight lagoon. Some as large as an acre in size. The concrete is reinforced with steel for crack control. Has anyone heard of "glacial" pouring? I have done it and...
I was out inspecting a 6' and 8' high concrete "tank" or "storage" facility. The dimensions of this structure is approx. 100' x 75'. The structure was designed with cantilever walls/footings and a reinforced concrete floor. The purpose of this structure is to store liquids/contaminated water...
