Adrian Cole builds practical, calculator‑driven tools for estimating construction costs, quantities, and timelines. With internships on mid‑rise residential projects and small commercial fit‑outs, he focuses on turning plan notes and takeoffs into clear numbers teams can use. Over the past 3 years, he has assembled spreadsheets and lightweight web tools that handle unit conversions, crew‑rate assumptions, and change‑order impacts at a modest project scale.
His work translates field inputs—labor hours, production rates, waste factors, and equipment cycles—into step‑by‑step estimates. He documents formulas plainly, tests edge cases, and flags hidden risks like mobilization, delivery minimums, and lead‑time float. Whether building a concrete volume tool or a labor loading chart, Adrian aims for transparent variables, sane defaults, and outputs that match how site teams actually build.
He collaborates with estimators, foremen, and junior PMs to validate quantity methods and ensure calculators reflect real‑world constraints. He keeps scope crisp, explains inputs in the same units the field uses, and publishes short notes on assumptions so decisions stay defensible.
Brandon Keller
Content Specialist
Brandon Keller is a construction estimator who turns drawings and specs into calculator-ready quantities, durations, and cost assemblies. With hands-on experience from residential remodels to small commercial tenant improvements, he focuses on clear inputs, realistic production rates, and transparent waste and lead-time assumptions. He has built estimating sheets and simple web tools that help junior PMs roll up takeoffs, schedule crews, and separate direct costs from markups. His writing favors short, structured steps and consistent units so teams can validate numbers quickly and avoid common pitfalls like double-counting, missing laps, or mixing metric and US units.
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Table of contents
Construction Calculator Osrs — Practical Guide
Scope: plan plank usage, actions, XP, and total gold cost for Old School RuneScape Construction training. I treat it like any cost takeoff: define variables, run the math, sanity-check against a known benchmark.
Goal: Oak Larder from level 30 to 74, plank price 500 gp, demon butler.
From xpTable: startXp = 13,363; targetXp = 165,636.
xpNeeded = 165,636 − 13,363 = 151,631 xp.
Oak Larder: 240 xp/action, 8 planks/action.
actions = ceil(151,631 / 240) = 632.
planks = 632 × 8 = 5,056.
plankCost = 5,056 × 500 = 2,528,000 gp.
trips = ceil(5,056 / 20) = 253 trips.
butlerCost = 253 × 1,000 = 253,000 gp.
totalCost = 2,528,000 + 253,000 = 2,781,000 gp.
Sanity check: XP per action is 240; 600+ actions to cover ~152k XP is consistent. Planks scale directly with actions; butler trips at 20 planks/trip match the calculator’s assumption.
Assumptions, limits, and pitfalls
XP table is fixed to standard OSRS skill XP thresholds (levels 1–99).
No bonus XP, no portable/buffs, no flatpacks.
Butler cost is an approximation (1,000 gp/trip) and does not model wages over time, missed cycles, or inventory errors.
Plank prices are user-entered; validate against current market data if precision matters.
Edge cases: fromLvl clamped to 1–98; toLvl to 2–99 and must exceed fromLvl. Negative or blank prices treated as 0.
Cost breakdown pattern
Direct material: plankCost = planks × gpEach.
Service allowance: butlerCost = trips × 1,000 (if demon).
Total: totalCost = plankCost + butlerCost.
Tip: If you’re optimizing for gp/xp, compare methods by dividing totalCost by total XP (actions × xpPerAction). Keep the same start/target levels to compare apples to apples.
Planning estimate only. Validate against live prices and in-game conditions.
Frequently Asked Questions
What does the calculator include in total cost?
It sums plankCost (planks × plank price) and an approximate demon butler cost at 1,000 gp per 20-plank trip if selected.
How are actions calculated?
Actions = ceil(xpNeeded ÷ xpPerAction), with xpPerAction set by the chosen method.
Why don’t I see bonus XP or flatpacks?
The model assumes no bonus XP and flatpack off to keep costs and actions aligned to standard builds.
What plank counts per action are used?
Oak Larder 8, Carved Oak Table 10, Teak Larder 8, Mahogany Table 6.
Are the XP values per action?
Yes: Oak Larder 240, Carved Oak Table 300, Teak Larder 375, Mahogany Table 420 xp/action.
