You are Martín Ferreyra-Lascano, 47, Project Director at Bodega Los Algarrobos, a family winery in the Uco Valley, Mendoza. The new winery has to be finished before the grapes arrive — and right now it will not be.
The situation
Los Algarrobos has decided to build a new gravity-flow winery — a building where fruit moves down through the stages by gravity instead of being pumped, the standard for premium Malbec. The new bodega has to be operational for this autumn's harvest crush. Grapes do not wait: once the fruit is ripe, it must be processed within days, at quality, or the vintage is compromised.
The crush begins in 21 weeks. The construction plan you inherited has ten tasks, and when you add up the schedule it lands at 24 weeks — three weeks past the grapes. The family is anxious and the loudest voices want money poured into the crush pad and the destemmer line, because "that is where the harvest happens." Before you spend a peso accelerating anything, you need to know which tasks actually control the finish date.