Quality & Grading Academy

A grade name is not a specification. That single sentence is the whole of this page, and almost every grading dispute in the Cameroonian export trade is a restatement of it.

Two suppliers can quote you the same grade name, in good faith, and ship materially different timber — because they were applying different rules, measuring at different points, or using a word that carries one meaning in their yard and another in yours. Neither has cheated you. You bought a label instead of a description.

This page does not print grade definitions, defect allowances, class boundaries or measurement conventions, and you should be suspicious of any page that does without saying which rule set it is quoting and which edition. What it does instead is explain what grading is actually doing, why the vocabulary is genuinely unstable in this trade, and what to write into a contract so that the word you and your supplier are both using ends up meaning the same thing.

What grading is for

Grading sorts a batch of naturally variable material into commercial classes so that it can be priced, described and sold without inspecting every piece. The glossary defines a grade as a classification of timber quality based on visible defects, dimensions and appearance, used to set price and suitability for a given use. That is the right level of generality, and it is worth noticing what it does not say.

It does not say grading measures strength. It does not say a higher grade is better timber. And it does not say the classes are the same everywhere.

Three distinctions carry most of the practical weight:

• Appearance grading versus structural grading. Most of what is traded out of Cameroon is graded on appearance — what the piece looks like and how much clear usable material it yields. Structural grading is a different discipline answering a different question, namely what load a piece can be relied on to carry, and it is tied to the design code of the destination market. An appearance grade is not a structural rating and must never be substituted for one. If your application is load-bearing, that is an engineering question for your market's rules, not a grade name on an invoice.
• Grade is relative to a yield, not to perfection. Appearance grading systems generally describe how much of a piece is usable clear material and what has to be cut around. So a lower grade is not damaged timber; it is timber that needs more cutting to get the same clear component. Which matters enormously, because whether a lower grade is worse for you depends on your cutting list, not on the label.
• Grading is done on a face, at a moment. A piece is assessed as it presents itself at the point of inspection, in the condition it is in then. Timber that is subsequently dried further, re-sawn, planed or shipped badly is not the same piece that was graded. This is why where the grading happens is a contract term, not a detail.

Why the vocabulary is genuinely unstable here

This is the part buyers underestimate.

More than one rule family exists. Named appearance-grading rule sets for hardwood are published by trade bodies in different producing and consuming regions, and grading conventions used for tropical African timber, for temperate hardwood and for logs are not the same systems. Names drawn from these families circulate in African export trade and appear routinely in offers and contracts. What cannot be said honestly is that any one of them governs Cameroonian export sawn timber as a matter of course. There is no single default. Which rule set applies to your order is a contract question, and if the contract does not answer it, it is unanswered.

Names travel further than the rules behind them. A grade name is a short string that costs nothing to write in an email. The rule set that gives it meaning is a document with an issuing body and an edition. In practice the string travels and the document usually does not, so the same word arrives in your inbox carrying whatever the sender assumed it meant.

Mills apply rules inconsistently, and not always dishonestly. Grading is human judgement applied to variable material, usually at speed, by graders trained in different places to different habits. Even under one agreed rule set, two graders will not produce identical sorts, and a mill that grades tightly for one long-standing customer may grade loosely for a spot sale. The Processing Academy covers what happens at the mill and why grade recovery is a separate question from volume recovery.

In-house grades are common. A great deal of what is offered is graded to the seller's own house standard — a real, consistent, internally documented thing in a good mill, and a mood in a bad one. House grades are not illegitimate. They are just unreadable from outside unless someone writes them down for you.

"First grade", "prime", "select", "export quality" and "premium" are marketing words unless a named rule set is attached. On their own they tell you that the seller wants the parcel to sound good. They tell you nothing you can inspect against or claim under.

Logs and sawn timber are graded differently, on different features and for different purposes, and a log grade says little about the grade of the boards that will come out of it. See the Products Academy for the traded forms.

The five things a contract has to settle

If you take nothing else from this hub, take this list. It is the difference between a grade you can enforce and a word you can only argue about.

1. The rule set — named, and by edition

State which published rule set applies, who issues it, and which edition or version. If you are buying to a mill's house standard instead, say so explicitly and get the house standard in writing — the classes, what each permits, and how it is assessed — attached to the contract as a document. A house standard you have read and agreed is far safer than a famous name nobody has pinned down.

If a supplier cannot tell you which rule set they grade to, that is not a disqualification. It is the beginning of a useful conversation: ask them to describe how they sort, and write down what they say.

2. The inspection point

Grade is assessed somewhere, and the answer changes what you get. Before or after drying? Before or after planing? Green off the saw, at the yard, at the point of loading, or on arrival at your premises? Timber can change classification between these points through drying degrade alone, and a parcel graded green and shipped dry has not been graded in the state you receive it.

Name the point. Then name who does it: the mill's own grader, your appointed agent, or an independent inspection company. The Buyer Academy covers wiring inspection into the payment mechanism, which is what gives an inspection clause teeth.

3. The measurement convention

Volume and dimension are not self-evident, and this is where quiet money moves. Agree in writing:

• At what moisture condition dimensions are stated — timber shrinks as it dries, so a thickness measured green and a thickness measured dry are different numbers for the same board.
• Whether dimensions are nominal or actual, and whether they are measured sawn or after planing.
• How width is taken on a board that is not parallel-sided, and how length is taken.
• How volume is computed and rounded, and whether over-length or over-thick material is paid for as measured or as ordered.
• Whether widths and lengths are fixed, random, or random within a stated range — random dimension stock is normal and perfectly usable, but it prices differently and a buyer expecting a fixed list has a dispute rather than a delivery.

Two suppliers using different conventions can quote the same price per cubic metre for the same grade and deliver you materially different value.

4. The tolerance

No parcel of natural material meets a specification exactly, and a contract that implies otherwise is a contract that will be breached. So state what proportion of off-grade material is acceptable, how it is counted — by piece, by volume, per bundle, per parcel — and against what sample. A tolerance that is not quantified is not a tolerance; it is a future argument in which the party with more leverage wins.

5. The remedy

Decide before production what happens when the parcel does not conform. Rejection of the whole lot, re-grading, replacement of the off-grade pieces, a price adjustment on a stated basis, or a right not to release payment. Each has very different consequences for both sides, and each is easy to agree in advance and near-impossible to agree in a dispute.

Note the geography of the problem: once a container has sailed from Douala, rejection is a theoretical remedy. Returning hardwood across an ocean is not a commercial option. Any remedy that matters is one that can be exercised before loading, which is why 2, 4 and 5 on this list belong together.

Grading and legality are different questions

They are frequently confused, so state it plainly: a grade says nothing about whether the timber was legally harvested. Grading is a commercial quality sort. Legality is a documentary chain — harvest title, transport records, mill records, export papers — assessed under whichever regime governs the market you are placing the goods on.

A high-grade parcel can be illegal. A low-grade parcel can be impeccably documented. Neither classification predicts the other, and no grading certificate substitutes for a legality file. That whole subject belongs to the Compliance Academy, and the traceability vocabulary — including chain of custody — is in the glossary.

What actually gets sorted

Without asserting any rule set's allowances, it is useful to know the kinds of feature graders look at, because it tells you what to specify.

Natural features of the tree. Knots and their type and distribution, grain deviation, colour variation and streaking, the proportion of sapwood present, brittleheart or other pith-associated weakness, and insect or fungal marks acquired before the log reached the mill.

Features introduced by sawing. Wane on an edge, out-of-square sections, thickness or width variation along a piece, saw marks, and skip where a planer did not clean up.

Features introduced by drying. End and surface checking, internal splitting, cup, bow, twist and spring, staining, and case-hardening in material that was dried too aggressively. The Fundamentals hub covers why these happen; the Processing Academy covers where.

Features introduced by handling and shipment. Fresh staining, mould, mechanical damage, and moisture pick-up in a badly protected load. This is the category that most often turns an accepted parcel into a rejected one, and it is not a grading problem at all — it is a packing and protection problem, covered in the Export Academy.

The reason this matters for specification: some features you care about may not be graded features under the rule set you agreed. Colour matching and figure are the classic examples — an appearance grade is not a colour match, and a parcel can be entirely to grade and visually unusable for a single continuous run. If appearance is part of what you are buying, agree it separately, against a physical sample, and say so in the contract.

Moisture content is the other one. It is not a grade. Specify it separately, with a target, a tolerance, and a stated measurement method — it is the line most often omitted and least fixable after arrival.

For a buyer: how to make grade enforceable

1. Describe the end use, not just the grade. Tell the supplier what you are making and what your cutting list looks like. A good mill can then tell you which of their sorts actually suits it — and may point you at a cheaper one.
2. Name the rule set and edition, or attach the house standard. Either is fine. Neither is optional.
3. Buy against a sample where you can. A retained, sealed sample agreed by both parties settles more disputes than any amount of prose, particularly for appearance. Say in the contract that the sample is the reference and where it is held.
4. Fix the inspection point, the inspector and the timing — before loading, in every case where you can.
5. Quantify the tolerance and write the remedy.
6. Ask what proportion of the parcel is expected to sit at the boundary. A candid mill will tell you. The answer tells you how the sort was actually run.
7. Ask for photographs and the grader's own tally, not a summary line on an invoice.
8. Re-use the same written wording with every supplier you approach. Grade is the term that most quietly destroys comparability between quotes; identical wording is what restores it.

When your specification is settled, post an RFQ so several suppliers quote against the same written brief, or browse the marketplace and the supplier directory to see who handles the form and species you need.

For a Cameroonian supplier: grading is a commercial asset

Buyers are not primarily asking to be sold a high grade. They are asking to be able to predict what arrives. A mill that can do that wins repeat business at better prices than one that talks up every parcel.

• Write your house standard down. Classes, what each one permits, how it is assessed, who assesses it. A one-page document you can send with a quotation puts you ahead of most of the market, and it costs you nothing you did not already know.
• Grade consistently across customers and across seasons. Consistency is the product. A buyer who can predict your sort will keep buying it.
• Say which rule set you grade to — or say honestly that you grade to your own standard and hand over the document. Buyers can work with either. What they cannot work with is a grade name and no explanation.
• Photograph and tally what you actually loaded. Records made before shipment are the only evidence that survives a dispute at the other end.
• Offer a sample and honour it. The parcel that matches the sample is worth more than the parcel described with better adjectives.
• Grade separately from the sales pitch. Where a parcel sits at the boundary, saying so before shipment costs a little margin once. Discovering it costs a customer.

Where to go next

Grading sits between the material and the transaction. Read the Fundamentals hub for the properties that make timber variable in the first place — moisture, movement, heartwood and sapwood — and the species directory for what we have assessed about each species. The Processing Academy covers the mill decisions that produce the sort, and the Products Academy covers the traded forms each grade attaches to — sawn timber, logs, boules, veneer, decking.

For turning a grade into an enforceable order, see the Buyer Academy; for the legality file that grading has nothing to do with, the Compliance Academy. Unfamiliar terms are defined in the Cameroon timber glossary.

About this hub

The Quality & Grading Academy currently holds no articles. This pillar page is the whole of the hub so far, and it is deliberately a page about how grading works rather than a reference table of grades.

That is a considered decision, not a gap we are apologising for. You will not find grade-name definitions, defect allowances, permitted knot sizes, clear-cutting yields, class boundaries or measurement conventions written into this prose, because printing them would require us to assert which rule set governs your contract — and nobody can know that except the parties to it. A grading rule set is a published document with an issuing body and an edition, and the honest thing to do is to tell you to name it and read it rather than to paraphrase it here and have you rely on the paraphrase.

Where we have not assessed something, the page says so. Articles will be added beneath this one as they are written and checked, and we are not going to list what they will be, because a promised article is not a published one.