Hacker News: m4rkuskk

New comment by m4rkuskk in "Ask HN: What Are You Working On? (April 2026)"

m4rkuskk — Sun, 12 Apr 2026 23:33:20 +0000

https://auxx.ai Yet another "AI CRM" Started over a year ago working on it part time. Its coming together. https://auxx.ai

New comment by m4rkuskk in "AI for American-produced cement and concrete"

m4rkuskk — Wed, 01 Apr 2026 19:11:29 +0000

What do you mean by "onsite testing"? Wouldn't this be part of the pre-submittal process?

New comment by m4rkuskk in "AI for American-produced cement and concrete"

m4rkuskk — Wed, 01 Apr 2026 18:58:05 +0000

This may work on a small scale, not in most commercial use cases. A typical deck pour (400cy) will pour at 70-80cy/hr. you got 9-10cy/truck. Meaning you have 7 to 8 minutes to back in the truck, empty it into the hopper and leave. You barely have time to add water to the mix. Most high-volume concrete plants are "dry-batch", which means all the ingredients get dumped into the drum and the concrete will get mixed while driving to the project site. Also, changing mixes on the fly will not "fly". No one is going to authorize the adjustment, because what happens when the mix doesn't meet specs... It will need to get chipped out.

New comment by m4rkuskk in "AI for American-produced cement and concrete"

m4rkuskk — Wed, 01 Apr 2026 18:42:25 +0000

They are standardized for a given mix. A mix design that is based on a trial badge is submitted to the SEOR prior to pouring anything. The mix design shows the ratios ingredients (cementitious materials, find and coarse aggregates, water, air, admixtures). But Concrete is still a non-homogeneous material with lots of variations. Take for instance aggregates, if it rained the last two weeks, the moisture content will be higher but it may only be a layer on that pile. Same goes for gradation (particle size of the rock). Sometimes you get a batch with smaller rock. There are a 100 things that can go wrong to get bad mud.

But yeah, there are concrete plants that cut corners and try to save on cement (the most expensive part of the mix), which depending on the project may bite them in the ass when they have to pay to fixing it.

New comment by m4rkuskk in "The Berlin Startup Scene According to Mattermark Data"

m4rkuskk — Fri, 22 May 2015 18:05:01 +0000

I think the author forgot to mention 6wunderkinder, the creators of wunderlist.

New comment by m4rkuskk in "The Rise of the Mile-High Building"

m4rkuskk — Tue, 24 Mar 2015 22:50:45 +0000

A carpenter from Local 22 (Bay area) will cost a company $70+/hr. http://local22.org/2014_carpenter1.jpg

New comment by m4rkuskk in "High-school teen builds one-man submarine for $2,000"

m4rkuskk — Wed, 05 Jun 2013 01:17:43 +0000

It's linear. The surrounding pressure increases by the following: P=γ*h P=pressure (lb/ft^2) h=height (ft) γ=density (lb/ft^3) water = 62.4lb/ft^3 So if he goes down 33ft, the pressure @33ft will be: Total pressure: 62.4x33 = 2059psf (1atm ≈ 2116.21psf)

New comment by m4rkuskk in "Show HN: Learn English with movies and TV Shows"

m4rkuskk — Tue, 28 May 2013 14:25:14 +0000

I learned English by watching Friends as well. However the thick german accent stayed. It's funny to see how many people in this post have learned english by watching Friends.

New comment by m4rkuskk in "Show HN: Subvim – Vim customized to be like SublimeText"

m4rkuskk — Sat, 06 Apr 2013 17:57:34 +0000

Pressing Ctrl-K,D to skip an entry is quite cumbersome, especially if you missed an entry and there is no way of undoing the last selection.

New comment by m4rkuskk in "Zip Bomb"

m4rkuskk — Fri, 05 Oct 2012 20:50:24 +0000

In case safari crashes and you won't be able to open it, sudo rm -rf ~/Library/Caches/com.apple.Safari did it for me.

New comment by m4rkuskk in "Build muscle memory with your favorite editor"

m4rkuskk — Mon, 16 Jul 2012 16:38:41 +0000

Event quicker ⌘+space spotlight and type `keyboard` =)

New comment by m4rkuskk in "DRM-Free Day, forever."

m4rkuskk — Fri, 04 May 2012 18:15:15 +0000

I got "Node up and running", "Programming Amazon EC2", and "Developing Backbone.js Applications".

New comment by m4rkuskk in "Firefox: Not A Good Citizen on OS X Lion"

m4rkuskk — Sat, 28 Apr 2012 20:30:57 +0000

The two-finger swipe gesture is horrobile on chrome. The swipe occurs way too fast and I wish there would be an option to adjust the sensibility in chrome.

New comment by m4rkuskk in "NYTimes November 11, 1911"

m4rkuskk — Fri, 11 Nov 2011 20:50:07 +0000

I wonder if she ever married the Baron.

New comment by m4rkuskk in "Ask HN: Review my startup"

m4rkuskk — Mon, 12 Sep 2011 17:24:31 +0000

Video looked promising. Can't wait to try it out. How many people have you already interviewed?

New comment by m4rkuskk in "Request for Google+ invite here - Let's help each other. "

m4rkuskk — Thu, 07 Jul 2011 19:43:16 +0000

Almost every cool person out there has a google+ account except me. =( I would love an invite.

Here is my email: m4rkuskk+thanks4invite [at] gmail.com