Sixteen field durations, each a quantity divided by a sourced production rate and rounded up, fill MT381's Unit 3 worksheet, with weather held on its own exterior calendar. Searches like "mt 381 unit 3 assignment example", "mt381 unit 3 sample" and "mt381 unit 3 example" land here.
What a finished MT381 Unit 3 duration estimate worksheet looks like
A six-page worksheet in columns: activity, quantity, unit, production rate per crew-day, adjustment factor, raw duration, rounded duration and a source column naming where each rate came from. Sixteen rows cover the work that drives the network: 236 cubic yards of footings at 20 a day for twelve days, 42,600 square feet of deck at 2,600 for seventeen, 14,900 square feet of air barrier at 1,300 for twelve, and 36,500 square feet of board per level at 3,700 for ten. Brick veneer is the only row with a factor: six masons at 62 square feet each, reduced by 0.95 for scaffold moves at the corners, gives 31.7 days, rounded to 32. A second table lists quoted lead times for five procured items, switchgear the longest at 132 working days.
How a MT381 Unit 3 example is structured
Rows follow the order the building goes up, so a reviewer can check each duration against the network it feeds. Every line prints its arithmetic, quantity over rate times factor, and rounding always goes up to a whole day, since a crew does not pack up after 0.4 of a day's output. Each rate names its source, whether the course's cost data, the curtain wall installer's stated output or the concrete subcontractor's records, and the worksheet says which is which. Weather is handled once rather than sixteen times: exterior activities are assigned a calendar that removes 28 anticipated lost days between March and December, drawn from the scenario's ten-year averages, so every duration remains a measure of work. Procurement lines split into submittal preparation, review at the ten working days the specification allows, and fabrication with delivery, because each part belongs to a different party.
Quantity over rate, row after row
Footings 236 over 20, deck 42,600 over 2,600, framing 14,900 over 750. Every line shows its division, so any duration can be recomputed on a phone calculator in seconds.
Rounding in one direction
Raw results such as 29.43 or 11.46 become thirty and twelve. Rounding down would promise output the rate itself says the crew cannot deliver in the time shown.
One factor, with its reason
Brick slows while scaffold is relocated around the building's corners, so 372 square feet a day becomes about 353. No other row carries a factor, and the worksheet says why none was needed.
Weather kept off the rows
Twenty-eight anticipated lost days sit on the exterior calendar, four each in March, April and December, two in each month from June through October. Interior work runs five days a week with nine holidays.
Lead times split by who holds them
Switchgear needs twenty days of submittal and approval, then 132 of fabrication and delivery; the elevators need 25 and 80. Separating review from fabrication shows whose lateness would move which installation.
Where marks go in MT381 Unit 3
Durations that arrive without a quantity or a rate beside them are what this worksheet exists to prevent, and graders commonly recompute two or three rows to see whether the division holds. Rates with no source earn less than sourced ones even when the figures look plausible. Rounding down, or carrying fractional days into the network, suggests the arithmetic was never connected to real crews. Weather folded into individual durations draws comment in sections that later ask for an update, because a padded duration cannot reveal when conditions ran worse than normal. Procurement entered as one block from order to arrival hides the review period an architect controls. A productivity factor applied to every row without stated reasons reads as padding, and unlabeled units, tons beside square feet, invite errors a reviewer finds fast.
Get a MT381 Unit 3 example written to your instructions
Upload whatever quantities and production data the Unit 3 prompt provides, along with the activity list from your breakdown and the rubric, and mention which cost data your course uses. Within 24-48h a free first worksheet comes back with each duration shown as a division, every rate sourced, and weather kept on its own calendar.
MT381 Unit 3 questions, answered
Should anticipated weather go into each activity's duration?
Usually not. Many schedulers leave durations as measures of work and give outdoor activities a calendar with expected lost days taken out, based on local historical records. An update can then separate normal weather from abnormal weather. If your course or scenario prescribes a different method, follow it and state the method on the worksheet.
What if the prompt gives no production rates?
Use a published cost database, the course text or rates the scenario implies, and name the source on each row. Where you must assume a rate, mark it plainly as assumed and pick a figure credible for the crew described. A sourced but imperfect rate is easier to defend than an unexplained number, and graders can follow the reasoning.
Why round durations up rather than to the nearest day?
Because a crew needing 11.46 days of output is still working on day twelve. Rounding down schedules less work than the quantity requires and builds a slip into the network before the job starts. Some sections accept half days; if yours does, say so, but whole working days are the usual convention.