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Overzeetop

@ Overzeetop @beehaw.org

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Comments
245
Joined
3 yr. ago

  • Need beam for a 22-foot span. It's a carport. What to use?

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  • One option would be to make the beam a flush condition. To get a 16' span with rafters you're going to be using at least 2x8s. That's 7.25" deep. If you were set the top of the beam at the top of the rafters and hang them from the beam (simpson or USP hangers) that buys you some space. Now an 11.88" LVL would only stick down 5-5/8" below the bottom of the rafters. (okay, 5-3/4"-6" with the additional slope over the 5.25" of beam) I'm not saying that a 3 ply 11x88 LVL with a 2.1E, bearing in a BC6 cap on 6x6s would work for your application, but the height tolerance would seem to add up in your favor.

  • Need beam for a 22-foot span. It's a carport. What to use?

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  • The advantage of LVLs are that

    1. you can put them up 1 ply at a time
    2. they hold nails/cut easily
    3. the lumber yard will likely size them for you if you ask

    The disadvantage is that the depth will be about 1/16th of the span when using 2-3 plies.

    The advantage of steel is that an I beam (W shape is what you want, for "Wide Flange Beam") will be about 2/3 the depth of an LVL. The disadvantages are

    1. An engineer will likely charge you about $600-800 to size this beam, but will also tell you how to top connect it
    2. It will be one piece (fwiw it will weigh about the same as the LVL)
    3. You will have to buy a 40' piece, or pay a premium to have it cut down from a 40' piece. (stock lengths of steel are 20'/40')

    Note that nobody can properly answer your question from the data given (edit - just notice you mentioned 16' rafters below). You would need to include the span of the rafters and (at least) your location to determine the snow loads and wind loads (edit: and seismic, though it's unlikely to control for this design) for sizing the connections.

    Disclaimer: I'm a structural engineer, but I'm not your structural engineer. For a long span like this I recommend contacting someone licensed in your jurisdiction to help you out.

  • Guess what % of plastics have ever been recycled?

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  • To take a contrarian view, the plastics wins handily in the reduce scenario. The plastic required to make a bottle is somewhere around 1/25 of the material required compared to glass. It's high tensile strength and fracture toughness means a huge reduction in material processed per container.

    The flip side to that is convenience - the ability carry and dispose of a 1/2 ounce plastic container, vs a pound of glass container - makes it ideal for conditions where you are less likely to recycle.

  • Guess what % of plastics have ever been recycled?

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  • Don' think of it as <1%, think of it as 80 Billion Kilograms - or 160 billion pounds in freedom units - of recycled material. ;-)

  • how's your week going, Beehaw

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  • Oh, I've been there. I hope you found a good coach. Mine moved away just a few months after I started, but I learned soooo much and he was very inspiring. Saw your first session went well - congratulations!!

  • AI hiring tools may be filtering out the best job applicants - BBC Worklife

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  • Huh, I guess I've just adapted with the enshitification arc. It aways seems pretty clear when the publications are not specialized that the "reviews" are really just generated or copy/paste lists of devices with affiliate links - and are essentially just paid advertising (though paid by vendors and not manufacturers in this case). I will agree that it's infuriating to have to sift through the ever-growing AI generated content to find something which has novel information.

  • Cable can't compete with 5G home internet, so it's cheating

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  • T-mos general coverage outside of city centers and interstates is trash (they're all pretty bad, but Tmo is very binary). I'd get it over xfinity, but it's not even offered in my major university town due to coverage limitations. And it's not like there aren't big pipes nearby - the university consumes more than 100TB of data traffic a day; their Netflix traffic alone was so large just 3 years ago that they were on the edge of getting a co-located Netflix rack on campus.

  • how's your week going, Beehaw

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  • Sinus (head) stuff is just terrible - and and internet outage? You drew the short straw this week! Hope you feel better soon!

  • how's your week going, Beehaw

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  • Went to see my parents last week. Dad had a sniffle the first day and I suggested we leave but my wife didn't want to drive 8 hours back home so we agreed to "be careful" and he stayed mostly away from us and wore a mask when we were in the car. Cue to 4 days later and my wife feels tired and has allergy symptoms driving home (tbf, the pine pollen down south is nuts and it's one of her primary allergens). I slept in the guest bedroom when we got home / spent my time on the other side of the house in case it wasn't just allergies. Tuesday morning...she tests for Covid "just to see" and is positive. I'm typing this from a hotel room, still feeling well, tested negative. Will test again today regardless.

    Oh, and Remdesivir? $1680 for a single prescription. Fuck me; no wonder they have so much money for TV ads.

  • Enshittification is coming for absolutely everything

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  • And, ime, a lot of corporations are serving content through third party (or at least non-native) servers, which means that any blocker which touches any of those servers breaks content completely. I've experienced major Travel, banking, and retail sites which simply don't work unless most blacklisted sites are allowed. That means either turning blocking off for that main site entirely, or spending an hour testing every one of their 30 off-site connections to see which ones break. I don't have that kind of bullshit time, and the rest of my family don't have the patience or skill to do that troubleshooting. PiHole turned out to be multiple hours a week of frustration so I gave up - I already have a full time job and full slate of hobbies. In-browser blockers are, at least, easier to toggle on and off.

  • Enshittification is coming for absolutely everything

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  • Just to be clear, generally stock buy backs are not to increase revenue or dividends, but to increase the stock price by creating a false scarcity. Potential dividend increases from corporate stock ownership are a shell game as the corporation received the dividend and it is simply added to the cash on hand and book value.

    Nearly all growth in stocks is capital based. Every corporation wants to increase revenue and profits because that forms the basis for valuation. Yes, there are young companies who are "forward looking" and trading on factors based on revenue and not net income, but most of the market is based on a net income multiplier (which varies by industry).

    As much pressure as the boomers (and soon GenXers) will place on revenue, it will never be enough to support the lifestyle to which they have become accustomed. Rather, they will be selling capital to fund their retirements. This will lead to long term stagnation of stock prices (in the best scenario) or a collapse of market value as retirees try to sell their stock for the next 9 month round-the-world cruise. This is a negative feedback loop, too, as the more people sell, the lower the value of their stock, requiring they sell even more shares to get to a fixed value in cash. I think of this as just one more Fuck You (added to the collapse of public health and public retirement subsidies) the boomers will be handing Millennials and GenZ. Actually, I thought you might catch a break with housing, as the value of housing as they all move into retirement homes would drop with the glut of units coming to market. Alas, corporations have found they can buy those units and rent them back at exorbitant rates, so they'll be tag teaming the boomers in fucking over the youth of today.

  • The NFL is an Abusive Workplace

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  • True, but most NFL players don't need to.

    On a realistic, rather than sarcastic level, CTE and the prevalence isn't the result of an abusive workplace, its the result of an unsafe workspace. Even in today's TikTok/Click Bait Headline world, words and their meaning should matter. Having a pit without a guardrail or a rotating machine in a manufacturing plant without limb guards and lockout station is not an "abusive workspace" it's an unsafe one. We need to stop referring to CTE, and damage in other injurious professions, as if they're something that Human Resources can address with an annual training course on proper workplace etiquette and start identifying them as the (prohibited) injurious practices they are.

  • The NFL is an Abusive Workplace

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  • Minimum wage at my library is also quite a bit lower. Risk/reward.

  • Record waiting times for cancer treatment in the UK whilst King Charles begins treatment within days of diagnosis

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  • A proper leader would ensure all of his subjects are treated before him. If he wishes to speed his own process he should fix the system, not circumvent or commandeer it.

  • Wizards of the Coast confirms it is not selling the d&d IP to tencent

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  • Whether you take the stick out of your dog's mouth or you tell the dog to give it to you, you're the taking the stick. Breaking up and selling off IP is exceedingly commonplace.

    We've already established they are whores, Tencent has simply been unsuccessful, so far, in negotiating their price.

  • Google's Chrome Browser Analyzing Your Browsing History with so-called "Privacy Sandbox" Feature

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  • I’m about 99% sure that this is exactly what credit card companies do.

  • More Americans are nonreligious. Who are they and what do they believe?

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  • Would, uh, that be God's ineffable plan? (with apologies to Pratchett and Gaiman)

  • From fiction to reality: Could people ever embrace a ban on flying?

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  • My guess is petrol scooter or motorbike, which is probably 2.5-3x the best automobile.

  • From fiction to reality: Could people ever embrace a ban on flying?

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  • My guess is that approach would do relatively little to mitigate the overall environmental impact. If you raise fees enough then private airplanes, with much higher CO2 per passenger, become more desirable. To make air travel "worth it" airlines - who have fleets of aircraft with 35-50 year useful lifespans - would dial back to business and first class only.

    Spitballing it, I'd say we could reduce flying passenger count by 80% but only see a 10-20% reduction in net CO2 generation. And then, to offset the loss in 80% travel, you would need to find an alternative travel source that is only 12-20% of the use of an aircraft per passenger mile for actual traveled miles just to break even on net passenger travel. 20% seems to be the marker for national rail vs most air travel, so we're at best break even. And for passenger ocean ships, the net cost per passenger in CO2 is higher than flying, so it's a lose-lose for any trans-Atlantic or trans-Pacific travel (not to mention the week travel time each way).