#Procurement
Drawing SVG Electrical Panels You Can Measure on Paper
The electrical panel drawings I generated from HTML looked good, but the technician said the proportions were wrong. I rebuilt the whole sheet, anchored it to actual catalog dimensions, wrote the viewBox directly in millimeters, and added a scale bar so the technician could use a ruler to verify that the drawing in hand really was at 1:10.
Food Factory Drawings: Sheets, Scales, and Paper Sizes
A food factory application drawing set has 7 items, each with its own scale range, and some numbers to work out before drawing—how wide a plan will fit on A4 or A3 at 1 to 100, and how to split it across sheets without changing the scale if it will not fit.
Quantity Takeoff from SketchUp Models with Ruby Scripts
A finished model already contains every number a quantity takeoff needs. Give groups readable names from the start, then write a script to grep through them, with two traps to watch for that can double your areas.
Sizing Main Cables and Breakers by Installation Method
Notes on choosing the main cable and breaker for a new 253 A feeder, why the same size CV cable can carry 227 A or 364 A depending on how it is installed, and the option of downsizing to 95 and compensating with operating rules, at the cost of the main breaker tripping if anyone breaks those rules.
Government ICT Computer Price Criteria + DIY Builds with Scripts
The December 2568 government ICT reference price criteria clearly define specifications for 20,000 baht office computers and 24,000 baht processing computers. In this article, I read the actual criteria item by item, then write a Python script to pull Advice prices and put together DIY builds to compare how much better the value is than buying prebuilt machines.
MDES 2564 Government CCTV Price Limits and a Hikvision PoE BOM
Read the full MDES June 2564 government CCTV reference pricing and basic specifications before setting a budget, then design a Hikvision IP/PoE BOM that meets the minimum specifications, reference price ceilings, 30-day recording retention rule, and requirement to allow at least 3 brands to compete.