If you are only building one home, the schedule planning presented on this page and on those linked to it could conceivably be skipped entirely. If you simply took the above list as a guide and proceeded to build your home, you wouldn’t go too wrong.
You’ll lose some construction time and a little money. Remember that when you are dealing with borrowed funds - time is money! Some small builders just play it by ear - keeping it all in their heads. So don’t get up tight if this material seems a little complicated.
But we wouldn't recommend that you skip this step in your home building adventure. It is a great feeling to know weeks or months in advance when you'll be needing certain subs or materials on the job.
And as I said before, it'll really help you coordinate the coming and going of subs and materials. Nothing upsets subs more than to get to a job site and find that it's not ready for him.
Or to find that the materials he needs have not arrived.
Or that you have scheduled too many subs on the
job at the same time and they're in each other's way! So again.
Plan your work and work your plan!
residential construction scheduling
systems we will present as the most useful for the owner builder
are the Critical Path Method (CPM) and the Bar Chart.
CRITICAL PATH METHOD
In 1957, DuPont developed a similar project management method called the Critical Path Method (CPM).
It was developed to address the challenge of shutting down chemical plants for maintenance and then restarting the plants once the maintenance had been completed.
It was quickly adopted by the construction industry to manage complicated projects. You can imagine how important scheduling must be on the construction of a skyscraper in central Manhattan. Storage space for materials is extremely limited, so steel that must be ordered and fabricated months in advance and reach the job site on the precise day it is to be installed.
It was to solve this kind of scheduling nightmare, that
the Critical Path Method (CPM) was developed.
HOW IT WORKS
Some activities must
follow others (you have to frame the house before you can put
the roofing on), while some activities can be happening at the
same time (the landscape sub and the wallpaper hanger will not
interfere with each other, and one’s work is not dependent
on the completion of the other’s).
You can readily see from the diagram above that a delay in some activities may delay the start of the succeeding activities. If a delay occurs in a critical activity, the completion of the job will be delayed.
THE BAR CHART
The bar chart is a simplified way of presenting or viewing some of the same information manipulated in the CPM.
The Bar Chart differs from the CPM in several ways. For one, it does not show any dependencies. I realize you may not know what that means yet, unless you clicked ahead to get a sneak peak at the details on the CPM. What it basically means is that some activities (e.g. framing) cannot start until other activities (the foundation) are completed. Therefore "framing" is said to be "dependent" on completing the foundation.
The CPM diagram shows these relationships, while the Bar Chart does not . . . as you will see when you examine the details of both types of recording your construction project scheduling.
There are other differences we will point out on their respective pages.
Bottom line: it
doesn't matter which you use. As long as you do the planning,
the method you use is not that important. Follow
these links to the CPM and Bar
Chart pages for more details on each method and instructions
for putting your own construction project
schedule together. I
prefer the CPM just because it provides more useful information
when it comes to the day-to-day scheduling. But you can use either!
When you've mastered your construction project scheduling it's time to move on to construction! You have gotten yourself pre-qualified for the financing you will need, you've prepared a budget for your project, found and purchased your lot, gotten your plans and specifications prepared, completed your cost estimate, and planned your construction project schedule.
it's time to secure your construction loan, get your permits
and start construction. We're going to start by giving you a walk
through of the entire Building Sequence. Click here.