I was contacted by a home owner that built some retaining walls under his existing house, basically deepened the existing crawlspace and turned it into a habitable area. After he went to the city and tried to get a permit, the city engineer said that he wants engineering calculations and details...
I am designing a HSS beam used for a residential stair. It will be a single HSS stringer cold bent to an approximate 4ft inside radius and span from ground floor to 2nd floor. I have never designed a steel beam that is bent in 2 directions like this is, so I have a few questions.
Are any of...
I posted something yesterday related to this topic, but I had not yet fully thought through all the issues.
Here is what is going on
Existing conditions:
2 story wood framed house with 2x12 fj that cantilever out 3ft and support the wall/roof load from above.
Proposed condition:
New...
I am doing a residential project where there is an existing 2 story house and they are adding a new front balcony.
The existing floor joists cantilever 3.5ft and support the wall (roof) above.
Since this isn't the best condition I am adding a steel beam under the wall above so that I can...
I am working on a small project and I would like to get opinions about my approach to a problem.
Scope of work is a free standing patio cover roof (300sf) where 2 of the posts are supported on top of a new retaining wall.
Since there are no walls for lateral resistance, and this is southern...
It has been a long time since I have designed a concrete shear wall since the majority of my work is in light framed residential. Last time I did was in 2010 or 2011 and I know that there has been some major changes with the code with respect to slender concrete walls. Unfortunately, I have not...
I am designing a cantilevered retaining wall, 8" poured in place concrete, 6ft retaining for residential. There is a slab on grade behind the wall that I would like to make a positive connection with to the back of the wall at the top.
I would like to limit the potential separation of the slab...
I have been hired to design the retaining wall system for a hillside residence. Basically the owners house sits about 20ft behind the top of a 2 horizontal to 1 vertical slope with a height of 20ft.
They want to extend the backyard to just beyond the downslope location in addition to a zig zag...
I have a small project, residential site walls to include planter walls that will be retaining 3ft max above grade. I'm curious as to what active soil pressure I should be using to design these planters with.
If I assume code minimum values then my active design pressure would be 60pcf. The...
I have a small project, residential site walls to include planter walls that will be retaining 3ft max above grade. I'm curious as to what active soil pressure I should be using to design these planters with.
If I assume code minimum values then my active design pressure would be 60pcf. The...
I am the EOR for a single family residence addition/remodel. The addition is a semi-subterranean garage attached to the existing house.
From the beginning on the project the soils engineer said that no shoring will be required since bedrock is relatively shallow. Also he outlined in the soils...
I am currently reviewing a set of proposed plan for new retaining walls and site landscaping located to an existing house on top of a slope.
Currently there is an existing pool that extends to the top of slope and the clients want to add new deck area at the top of slope. See attached pdf.
I...
Please refer to the attached detail for reference.
A client wants to remove an existing 1st floor wood stud bearing wall supporting a floor, roof & wall above at their house. They want a 22ft clear opening into a new room without a drop beam. Existing 2x10 floor joists, so I check a W8x67 wide...
I have an existing condition that I am trying to work out and make work.
Existing single story light framed house. Roof is 4x10 beams spaced @ 7ft o.c. & 2x T&G spans between. See attached picture of the connection between each 4x10 beam at the ridge point.
Architect wants to install 2x10...
I am providing the design and foundation details for a Vietnam Memorial wall for the City I live in in Southern California.(high seismic zone)
This is a 5300Lb granite wall with two 1.25" dia holes placed in the bottom for anchorage. See attached sketch.
I am designing this per ASCE 7-16...
Ok, here we go....I am the E.O.R. for this project, which is a new custom 2 story residence(spec house for a developer). Everything has been approved and built. The developer sold the house but the owners wanted to make some changes. The contractor came to me with this guardrail detail for the...
I am the EOR for this custom home that has already been framed and recently the trades; electricians, plumbers and fire sprinkler installers went through to install their wires and pipes. Since the floor joists are 1.75x9.25 microlam lvl joists I have a typical detail for the allowable hole...
I designed an isolated concrete pier footing supporting a steel column that will be supporting a new patio roof for residential. This is located in Southern California so my governing load is lateral seismic. As the contractor started to excavate the hole for the pier, they came across an...
So I came up with a connection for a stairway handrail post and now I am having difficulty with the calculations. See attached sketch.
My 1st thought would be to determine the baseplate thickness that is welded into the post, then determine the welded stud diameter in bending. This is where I...
I am working on a project for a client that has a design from a landscape Architect that calls for a freestanding fireplace for their residence.
The firebox is 6ft tall x 7ft wide x 33 inches thick with a 3ft wide x 19 in thick x 7.5ft tall chimney on top and covered with 1.5in stone & 1in...
