When joists run over beams; what is the difference in letting them ride on the beam or just hang them with joist hangers. What is the difference structurally and cost? I am not sure how expensive joist hangers are?
What is the best way to tie piers to grade beams.
Is it better to run the rebars from the pier long enough then bend them to run parallel with the rebar in the grade beam and use wire ties to join them together rather than use bent hooks between the pier and the grade beam?
The attached images are of a cylindrical core into an average serpentine rock formation I have on my project. I was cut using a coring bit. I chose an average location where I did not purposefully core in the hardest rock, I chose few soft surfaces to start the core and few harder ones. In all...
Requested a quote for drilling piers in rock, the drilling contractor has pretty big heavy duty machines. My requirement for drilling is 3 ft in competent rock or drilling refusal. The drilling contractor refusal is when his drill does not go more than one ft in five minutes. Is this a...
Is it possible to reach 95% compaction with a vibrating plate? The compaction area is has to reach for big machines. Is it possible to have several runs on thin layers and achieve what big machine can do?
I have the following Data.
Borehole in rock with visible serpentinite presense, other kinds of rock exist as well drill refusal at 5 ft.
The sample depth is 2ft to 2.5 ft
(Blows per ft*0.63/Blows per ft) is given as >50 (blow counts obtained from Modified California Sampler were multiplied by...
Quake-prone Italy lags in quake-proofing buildings
AP
Italy Earthquake leaves village devastated Play Video AFP – Italy Earthquake leaves village devastated
* Strong earthquake hits central Italy Slideshow:Strong earthquake hits central Italy
* Death toll hits 235 as big aftershock...
I hired a surveyor to do a TOPO map for my property. He produced a map with 2 ft increment contours of my property and on two of the adjacent 4 properties to a certain distance inside the neighboring properties. Two of the neighboring properties with no fence between mine and them and the...
I am building 3 ft high 12" thick wall on rock. I excavated the top 12 inches of highly weathered rock and top soil; now I have a solid place for the footing. Because the wall will be a potential impact wall I want to resist overturn. I am planning to place 12" diameter and 3 ft deep piers @ 10...
Planning a swimming pool to be placed in competent bedrock on a hillside location. The pool will be cut into perfect stable rock; this data is confirmed from adjacent excavations while creating landscaping planter. Is it better to cut the exact size of the pool and when placing reinforced...
I am not sure this post belongs here, I thought I could get some help from some engineers who have forensic experience in this field before I hire a lawyer. Otherwise ignore my post.
I have a situation where there is geologic hazard affecting my property due to the fact that the City failed to...
I am building a landscape structure from 4x4 redwood on a perimeter foundation built from stones and mortar. I embedded some of the J bolts in the foundation in concrete pockets.
I need to embed more threaded bolts in the foundation, I am using 1/2 bolts, I drilled with great difficulty many...
I am developing a property where part is sloping up by 40% with rock outcroppings showing; the rest is flat and is a small part of the property, on the surface it is a mixture of dark soil and stones of all sizes. On the published California maps of liquefaction hazard the flat area is labeled...
I am doing a structural retaining wall in a seismically challenged area (California). The ground is rock the height of the retaining wall is 6 ft. I am planning to put a post behind the retaining wall to take the load from the top floor that overhangs the retaining wall. The post(PIER) will be...
I am planning to build a structure on a rocky site, my initial excavations lead me to believe that the site is made up of very loose small boulders the first 1-2 ft and the boulders get bigger as you go deeper. The joints between the boulders range from 2-10 inches in width and run along almost...
There are loose or almost dislodged rock boulders on the site above a property I am developing. The size of the boulders (assuming spherical shape by way of approximation) ranges from 2 to 4 ft in diameter. What action can be taken to mitigate the risk of the boulders rolling on my property? is...
I am in the process of planning a 100 ft long retaining wall to support grading for a new house of a sloped up lot. The height of the retaining wall ranges from 5 to 8 ft. The area is labeled as seismic and geo-hazard as most of San Jose CA is. I am doing some exploratory digging on the land...
