Date: 13/2/2010
Today was my first OT at HC2. It was more rewarding than the previous 2 days, because besides cutting Unistrut, I got to assist in the installation of cable ladder with George.
Most of the time, I was just passing tools to George and observing the installation process. Observation is an important task as an apprentice. Because the tradesman will suddenly ask you what's the next step or the sequence of putting in the nuts, washers and bolt. Although tempted to fall asleep, staying on alert should the way of doing it.
To install cable ladder, we need:
1. Unistrut - the length depending on where we want to mount them. The Unistrut used to mount onto the ceiling must have holes, and the Unistrut used to support the cable need not have holes - because the channel on the Unistrut will do the job with the help a channel nut - great design!
2. Threaded rod - we need 2 of them - the length depend on the application
3. Nuts - 4 of them
4. Washers - 4 of them
5. Square washer - 2 of them
6. Channel nut - 2 of them
We were doing a very dangerous job today - trying to put a 6 metres cable tray onto a position which was impossible to fit. There were no proper tools to perform the job. We had to move the cable tray up to the scissor lift with George in the lift and me pushing the tray to him from the ground. The tray was not light! It was just too dangerous. What if George slips? The cable tray will crush onto me. Luckily when we were doing that, a plumber spotted us performing the dangerous job and offered us a tool - the lifter. It was much easier after that but still - dangerous.
After getting it on top the lift, we pushed it to the roof, and from the roof trying to slide it back to the little slot where the tray supposed to lie - with a huge inclination. With a little calculation, before doing it, I already know there was no way of succeeding - because of the piping blocking underneath. But when the tradesman insisted, you can't say no.
In the end, George decided to cut the cable ladder into half. We brought it down and cut it. This process of trial and error took us 2 hours, which could have been avoided with a little bit of calculation.
1300 - Finished - According to Matto, we got to get out from the site before 1300 otherwise, we'll be locked in! That's why we left at 1240. So good.
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