A couple of weeks ago, Constructorator's blog post was on sequence. I thought I would give my two cents on the matter, because it really hit home and it's something I continually preach. Proper sequencing is crucial to every phase and task you and your crew perform. I am also a firm believer in open communication between everyone involved in the task at hand. I really push for input from my crew and any other subcontractors affected when planning sequence.
My current job is supervising two of the four concrete core walls, 83 feet in height. We used a gang form on a rollback system to pour six lifts of an H shaped wall and a rectangle stair core wall. Sequence was the first thing on my mind when pre-planning this job.
I started with the overall sequence by asking these questions:
• Which wall went first?
• How would this affect the ironworkers?
• How many crane picks were we on each wall?
These were a few of the variables that went into the overall sequence plan to create flow. If we didn't plan our sequence and just went at it, we would never meet our tight schedule and budget. The crane time was our biggest obstacle; we had one crane to feed four walls, twenty-five guys, and the ironworkers. If we were out of sequence, we could halt production by needing to jump panels and fly rebar on all four walls at the same time. All of the key players sat down together to come up with a plan that would keep everyone in the proper sequence.
Now that we had our overall plan, we didn't stop planning there; next, we looked at all of the steps we needed to take to pour our walls. Would we gain anything by doing one step before the other? My foreman and I walked through everything together to come up with a plan. We then communicated our plan and opened a discussion with the crew for their input during evening huddles. You would be surprised how processes will improve, if you allow the workers doing the actual work, have a say in their procedures. They might see something that you haven't thought about that could save valuable time.
You should always look to improve process. No matter how good your crew is at a job, there is always room for improvement. Pre-planning sequence should be your first step in helping improve your crew’s productivity.
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