Hi, I am in the process of trying to find a excavator to dig the footing for my HDX572 tower. To the 5 people I've talked to so far, this 5x5x8 hole is difficult. I think mostly because none of them
The problem might be getting one with enough reach into the small hole. Plus they are probably used to doing the dig and form approach instead of pouring into undisturbed soil. In some areas it's alm
I just dug (actually my son did) a similar hole for my HDX555 last October. It can be done with a "rented for the weekend" (the cheapest way) mini-excavator with no problems except, while operating o
Let me toss this out for consideration. I too have the situation where I need a large hole for an LM-470 base. I thought about contacting a "Tree Planter" and getting him to use his big Auger to bore
When I contacted a local PE (Heber City, UT) regarding my tower base he asked how I was going to dig the hole. I told him I would use a large auger and then square it up. His reply was in effect, goo
Basically, right. If you're more than waist deep, and it caves in, the person could die before you get them dug out. There were several cases of this in the Los Angeles area last year. The victims we
The original specs for the Tri-Ex LM-470 stated you could use a round hole in place of a square one. A round hole 5 ft in diameter, 7 ft deep and forms 6 inches above grade. These plans were dated 19
Nope.. you're right on base. here in Southern California, a lot of structures (light posts, freeway signs, roller coasters, etc.) get installed on what are essentially vertical reinforced concrete co
for my HDX572 tower. To the 5 people I've talked to so far, this 5x5x8 hole is difficult. I think mostly because none of them have a small enough backhoe. Most of them want to dig a big hole and have
I dug a couple of 3x3x6 foot holes by hand using a short handled shovel and a pick. I also needed a yardstick, bucket, and small aluminum ladder. You can really get a precision hole that way. The hol
I used a 12 inch bucket mini-excavator and like Steve said, it was easy and fun to operate it (my son actually let me try it a few times). These excavators may only go 8 ft. deep though. We just had
If my math is correct (only took off the left shoe), the LM-470 requires a base 3.5' X 3.5' X 7.5'. that equals a 4' diameter by 7.5' deep hole. Now I need to talk to the Tower folks and see if they
If volume is the relevant thing, yes. As a practical matter, the holes I've seen drilled have always been much deeper than in diameter. In your example, perhaps 3 ft in diameter by 13 feet deep, or 2
7.5 feet is the recommended depth for the LM-470 base. I kept that as the constant and varied the diameter to get to the same volume.But then I am not a PE. I remember when the Commonwealth of Massac
I don't remember the depth and can't put my hands on the drawings for my HDX-555 tower, but the contractor used a large augur then squared the hole (sort of) by hand. He ended up using 9 yards of con
In general, you also have to have some practical experience (6 years in California, although a suitable degree counts for a few of those years) and take a couple of fairly rigorous all-day tests. One
I want to keep this in a proper prospective as the ground you are digging in can be a lot of different types and without knowing for sure it can range from cement hard to soft sand. My 555 pad is 6x6
Yeah, I am now trying to get estimates from "concrete contractors". I wouldn't blink at something like 1800$ for the job, but I don't think that will happen here in New York. -Scott, WU2X ___________
Couple of thoughts. First call the concrete plants and find the per yard delivered price around here no truck charge after 5 yards. Can you back the truck to the hole or do you have to pump it? The r
The foundation for my HDX-555 cost $2500 in W. Michigan a little over 18 months ago. 73 Alan NV8A _______________________________________________ _______________________________________________ Tower