Yes, you're right. I was aware of this since the very beginning. The buildings are within falling distance of the tower. I didn't choose the tower erection site nonetheless.
In my view, lightnings are much worse than the tower failing due to wind loading. In the latter case, people might have...
Thanks everybody for the comments. They're much appreciated.
I'm the project manager and also will be involved with the structural aspects of the tower. I'll outsource the design of the grounding system to a specialized firm.
fa2070
I’m in the early stages of planning and coordinating the project of a 160 ft. communications guyed tower (steel tubing) for a 9-mile point-to-point 5.7/5.8 GHz wireless link. The final location of the tower is still being discussed, and therefore subject to change if circumstances demand it. Due...
[tab]Does AASHTO cover simple cases like this one? (nothing is simple for me, mind you)
[tab]That was the first thing I told the contractor. Nobody cares, though, as long as the solution is fast and cheap. That's what they want.
[tab]AFAIK meshes where [Φ] of wire [≥] 1/4" (or 6mm) can...
I'll try to describe the situation as best as I can.
I have to bridge a 7 ft-wide x 36 ft-long (2m x 11m) strip on the side of an existing culvert for truck traffic (no more than 22 Kips. per wheel). Fig. 1a shows how things look now and Fig. 1b shows how the projected lateral access will be...
Vibration. Split form. Requires careful workmanship. See attached photo.
You can download the slide decks from a waterstop workshop here: http://www.wi.nrcs.usda.gov/technical/eng_Waterstop.asp
Pay attention to Waterstop Formwork (PPT; 5234 KB). All the other PPTs and PDFs are also interesting...
While we're at it, can anyone explain the difference between construction and expansion joints?
Expansion joints are designed to accommodate growth from temperature deltas whereas construction joints come from scheduled interruptions in concrete pouring (e.g. slabs), but at the end of the day...
Hello,
I have to build a new reinforced concrete pool inside an old, unmaintained and distressed one. The newer pool will be smaller and shallower, that is, the floor slab will be 6 ft. above the old slab which means that something like 6 ft. of fill will have to be placed and compacted over...
Hi,
I'm in the early stage of the design of a precast concrete truss... actually a counterfort (see reference [3] for an example). My initial goal was to investigate which arrangement, of all the known truss configurations and their combinations resulted in the fewest tension members for my...
Are "anchorage" and "development" not mechanically equivalent? If not, what's the difference? I thought both terms could be used interchangeably. Leaving economic/practical/labor considerations aside, for any given diagram of bending moments in pure beam zones I can anchor outside the critical...
JAE,
With your sketch in mind, how do you idealize the beam at the support? Do you model it as simply-supported and neglect the bending moment in the joint? By looking at the detail it's clear that the beam-column pair doesn't qualify as a "frame", but on the other hand there's a small moment...
After a few iterations with the upper management and client I finally convinced them that a below-grade concrete reservoir with sloped sides will be the most economical solution. Basically, I envision the structure as a huge floor of cast concrete, as shown in Pic. #1a:
But before I proceed...
@kslee1000:
Roof material:
Prestressed TT's
Roof load: Self weight.
Roof support: internal reinf. concrete columns and beams
@cvg:
How do I assemble the panels on the sloping ground?
Non-shrinking cement grout plus polyurethane sealant in the joints.
@graybeach
No, the water table is...
Hi,
I have to design a rectangular concrete reservoir for containing sugar cane molasses/syrup (density=1500 Kg/m3).
Dimensions: length=100m, width=35m, depth=6m
Some of the project constraints are:
The walls must be of precast reinforced concrete panels. (no prestressing or post-tensioning...
