Wholesale sales of wooden cornices: how to coordinate linear trim with fire doors and fire compartment boundaries before ordering

In a hotel corridor, a decorative wooden cornice runs as a long horizontal line along almost the entire floor. On the architectural elevation, it is easy to arrive at a single figure: KZ — 68 linear metres. But the same corridor contains fire doors, fire compartment boundaries, fire partitions, technical openings and other special assemblies.

For wholesale procurement, such a cornice cannot automatically be treated as one continuous component. First, all special boundaries must be identified and an approved decision obtained: where the decorative line continues, where it stops, where it changes geometry, and where procurement has no right to make a decision at all without the designer.

Working sequence: floor → axis → special boundary → door/partition mark → approved assembly → decorative elements affected by the boundary → finished sections → terminations → individual components → cutting → marking → installation sequence → follow-up order.

The main principle: the fire and door system determines the permissible assembly, and the decorative moulding is subordinate to that decision. Procurement does not design fire protection and does not alter it for the sake of cornice continuity.

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A continuous cornice on the elevation does not yet mean a continuous procurement component

A corridor 60–70 m long can look like a single decorative line. For budgeting purposes, it is convenient to write:

KZ‑… — 68 m.

But this figure says nothing about the special points at which the design assembly may change geometry.

The route may include:

• standard room doors;
• fire doors;
• boundaries of fire compartments;
• fire partitions;
• elevator lobbies;
• technical rooms;
• stairwells;
• shafts and special openings;
• transitions to areas with a different cornice.

For procurement, not only the total linear footage matters, but also the question: which sections are actually a single continuous decorative element according to the approved documentation?

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Why the total perimeter is dangerous

If the PG‑02 boundary requires the decorative line to end, the cornice to its left and right become two separate elements. If the purchaser has already ordered one long composition or calculated the cutting as continuous, the material will have to be redistributed or additionally ordered.

That is why the main calculation begins not with the wall length, but with the map of special boundaries.

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Before calculation, all special boundaries of the floor must be collected

Procurement needs more than just the architectural plan. For each corridor and public area, the working documentation must be used to find:

• boundaries of fire compartments;
• fire door tags;
• fire partitions;
• technical shafts and openings;
• stairwells;
• finish junction details;
• material changes;
• places where the designer has already specified a special termination.

The article does not define the door class, fire resistance rating, permissible fastening method, or barrier construction. These parameters are taken from the approved design and working documentation.

What needs to be obtained as a result

Not a set of comments on the drawing, but a separate boundary schedule.

Until PG‑02 is resolved, the lengths of adjacent decorative elements remain provisional.

The procurement specialist must not independently decide on a special assembly

The most dangerous phrase on a project:

"It looks nicer this way, let's just extend the curtain rail further."

If the zone belongs to a fire barrier or its opening, the method of execution is determined by the approved design and responsible specialists.

The role of procurement is different:

• identify the special boundary;
• not lose it during calculation;
• obtain the approved assembly;
• translate it into specific parts;
• order the correct geometry;
• do not replace standard door elements with a decorative profile;
• do not assign the fastening method by analogy.

What procurement can do that is useful

It can ask the designer a precise question:

“PG‑02 crosses line KZ‑006. According to the assembly, should the cornice continue, end, or change design? If it ends, specify the end point on the left and on the right.”

This is a good question, because after the answer the part can be calculated.

The special boundaries map should appear before the cutting map

Cutting can be optimized only after the actual finished parts are known.

If the PG‑01 boundary has not yet been resolved, the buyer does not know what they need:

• one long part;
• left part;
• right part;
• two decorative end caps;
• different profile on both sides;
• special short filler.

Therefore, the sequence is strict:

BOUNDARY MAP → APPROVED ASSEMBLIES → PARTS LIST → CUTTING → ORDER.

Changing this order for early purchasing is risky.

Why preliminary square footage is still useful

It is suitable for budgeting and early price requests. But the document must clearly state:

“68 m — preliminary, special units PG‑01…PG‑03 are not closed.”

At that point, no one treats the budget figure as a finished production specification.

A fire door cannot be considered an ordinary interior opening

An ordinary door and a fire door may be identical in width and height, but they cannot automatically be combined into a single decorative type for procurement.

The reason is not the appearance. A fire door is part of a special design solution. The finish next to it must correspond to the approved unit.

This means:

• do not transfer the standard door unit to it without verification;
• do not replace the standard casing with a decorative molding without authorization;
• do not attach decorative elements to the door unit “as usual” without a design solution;
• do not assume that the cornice necessarily runs continuously above the opening;
• do not assume that the baseboard ends the same way as with an ordinary door.

For standard door solutions, STAVROS already describes Door molding. A special fire door requires a separate project review on top of this general logic.

A cornice above a fire door is a separate procurement matter

On a long wall, you want to see a continuous top line. But the buyer must get an answer to a specific question:

DOES THE DECORATIVE CORNICE ABOVE THIS OPENING COMPLY WITH THE APPROVED DETAIL?

There are at least two options.

Option A — the line continues

Then the project specifies the permissible geometry and fastening. The buyer calculates one section or several production parts by commercial length.

Option B — the line ends

Then the following appear:

• left part;
• right end on the left;
• left end on the right;
• right part.

This is already a completely different cutting layout.

Why you can't decide based on aesthetics alone

Even if a continuous line looks more beautiful, the decision is made not by decorative preference, but by the approved assembly.

If selected wooden cornice, its specific dimensions and product length are checked separately after the project has determined the very principle of how the boundary runs.

A fire partition must receive its own FR code

On an ordinary architectural plan, a fire partition may look like just another wall. For procurement, this is not enough. If a decorative line passes through it, the partition must be clearly highlighted.

For example:

PG‑04 / FLOOR 3 / AXIS 18 / FIRE PARTITION / KZ‑006 / DETAIL No.___.

The code is not needed for fire calculation. It is needed to:

• link the design detail to a specific location;
• not lose the boundary in the wholesale schedule;
• attach the cornice, skirting and moulding to it;
• give the installer an unambiguous reference point;
• place a supplementary order if one special part is damaged.

Why axes and door marks must be transferred to the procurement table

The designer works with axes, marks and details. The warehouse more often sees packages, floors and rooms. If the PG code is not transferred from the design documentation to the picking list, the meaning of the special boundary disappears.

The marking must connect two languages:

PG‑04 / AXIS 18 / FLOOR 3 / CORNICE K‑01B.

So the warehouse doesn't have to read the entire fire protection section, but understands that the part belongs to a special assembly and is not interchangeable with a standard one.

A vertical boundary can simultaneously affect the baseboard, molding, band, and cornice

If a fire barrier runs from floor to ceiling, you cannot resolve each decorative element separately.

The following can be on the same vertical line:

• plinth;
• framed wall molding;
• horizontal band;
• wall panel;
• platband;
• ceiling cornice.

A weak process looks like this:

• the baseboard is drawn by one designer;
• the molding — by a second;
• cornice — third;
• the door comes from a separate supplier;
• the installer on site tries to assemble everything together.

A strong process — a single vertical assembly PG‑05.

What the single assembly should show

• floor;
• bottom of the wall;
• plinth;
• door unit or partition;
• framed composition;
• horizontal decorative lines;
• cornice;
• endpoints;
• permissible fastenings according to the project;
• separation of materials.

So one special boundary yields one set of procurement decisions, not four independent guesses.

The skirting near a special door must be calculated according to the approved termination

For a fire door, it is especially important to determine in advance where the horizontal skirting line ends and how it interacts with the door trim.

Procurement needs four answers:

1. where the skirting ends on the left;
2. where it begins on the right;
3. which profile is used;
4. whether the logic is the same on both sides of the opening.

If the left section is 420 mm and the right is 680 mm, these are two specific short pieces. They must not be hidden in the general allowance for "cutting."

Why short pieces are especially easy to lose

In a long corridor, the main consumption comes from dozens of meters of straight sections. Against that background, 420 mm seems like a trifle. But it is precisely the absence of such a short filler piece that prevents the neat completion of the door.

Therefore, special sections are included in the parts map as separate lines.

For a standard joint, the material is useful Wooden baseboard in the door area. For a fire-rated assembly, only the decorative solution approved by the project is used.

A wall molding near a special boundary requires a separate module

If the corridor is finished with frame moldings, the fire-rated boundary may fall inside a standard module.

Then the standard M‑01 stops working.

For example, the following is created:

M‑PG01.

The following are recorded within it:

• left vertical;
• right vertical;
• horizontal parts;
• end point at a door or partition;
• article number;
• the material;
• finishing;
• finished lengths.

Why the module must be repeated as a unit

If the same special door occurs 40 times, procurement receives:

M‑PG01 × 40.

The geometry is approved once, the cutting layout is built once, and the marking is determined once.

This is far more reliable than measuring “approximately the same opening” on site forty times.

A horizontal band cannot automatically run through a special boundary

On a panel wall, a horizontal molding may run at one height. If it meets PG‑06, there are several possible design scenarios:

• the belt ends before the boundary;
• the belt continues;
• the belt changes geometry;
• transitions into another profile;
• absent in the door unit zone.

There is no universal answer.

Procurement must receive the exact assembly and then translate it into parts.

Why “a continuous line is more beautiful” is not an argument for procurement

In an ordinary decorative composition, aesthetics truly determines the rhythm. For a special project boundary, the aesthetic solution operates only within the constraints of the approved assembly.

A long ceiling cornice must be divided into sections K-01A, K-01B, K-01C

Let us imagine one corridor with two special boundaries.

Instead of:

K‑01 — 68 m.

More useful:

• K‑01A — from the beginning of the corridor to PG‑01;
• K‑01B — from PG‑01 to PG‑02;
• K‑01C — from PG‑02 to the end of the corridor.

After the units are approved, each section becomes a set of actual parts.

What this division provides

• it is clear which lengths depend on the unresolved PG;
• each confirmed section can be cut separately;
• easier to label;
• simpler to arrange replacement of one damaged part;
• Changing PG‑02 does not require recalculating the entire corridor.

Example

Conventionally:

• K‑01A — 21.4 m;
• K‑01B — 18.7 m;
• K‑01V — 27.9 m.

The total is still 68 m. But the production structure is already different.

If PG‑01 requires a break, K‑01A and K‑01B get separate endings. If PG‑02 allows continuation, K‑01B and K‑01V may have a different layout.

A special fire boundary must not be confused with a movement joint

In both cases, the decorative line may be interrupted. But the reason is different.

For a movement joint, the main task is related to the movement of structures and the inadmissibility of a rigid bridge where none is provided.

For a PG boundary, the reason is a special designed fire-rated assembly, door, partition, or compartment separation.

Two topics require different source documents and different responsible specialists.

Why you cannot transfer a solution "by analogy"

The fact that the cornice ends before the expansion joint does not automatically mean that it must also end at the fire door. And vice versa.

The procurement card must store the reason for each break.

The two sides of a fire door may belong to different interior zones

For example, one side of the door opens into a hotel corridor, and the other into an elevator lobby.

Then the following may differ:

• cornice;
• plinth;
• wall molding;
• color;
• the material;
• scale of the decorative system.

A fire door simultaneously becomes a convenient architectural boundary between two interiors — if that is exactly what the project provides for.

Why one profile does not have to continue on both sides

If the corridor uses KZ‑006 and the elevator lobby uses KZ‑008, there is no point in forcing one of them to extend into the other's zone just for formal uniformity.

The door boundary can naturally separate two KZ types.

If adjacent zones use different KZ, this must be resolved before ordering both batches

Let's imagine:

• corridor — KZ‑006;
• lobby — KZ‑008;
• between them, PG‑07.

Current STAVROS product cards show that these profiles really do differ in scale: KZ‑006 is about 55 × 20–22 mm, KZ‑008 is about 90 × 41–44 mm depending on the material.

This means the transition cannot be hidden as an accidental cut. It must be architecturally meaningful.

What to check

• the termination point of KZ‑006;
• the starting point KZ‑008;
• door casing or door portal;
• the overall height of the top line;
• the material;
• finish;
• visibility of two profiles simultaneously.

After that Wooden ceiling cornice is ordered as part of a specific zone, not as a universal profile for the entire floor.

A standard element of a door system cannot be automatically replaced with a decorative molding

In the area of a standard interior door, the casing, extension, and decorative molding are often considered a single interior system. With a special door, this is dangerous logic.

If the project specifies a particular door unit, the purchaser must not independently decide to:

• replace the standard casing with another wooden profile;
• add a decorative strip to the door leaf;
• change the thickness of the trim;
• close the installation area with a "beautiful molding";
• glue the profile where the project does not include such a solution.

A decorative profile and an element of a certified/project door system are not the same thing.

What can be done in the procurement article

It can be determined that next to PG-08 a decorative profile M-01 of length ___ is needed according to the approved detail. Its quantity and cutting can be calculated. The left and right parts can be marked.

A universal instruction such as "remove the standard casing and replace it with a wooden molding" or "attach the cornice directly to the door frame" must not be given. The admissibility of such solutions depends on the specific detail.

How to correctly link the STAVROS door cluster with this article

For a conventional architectural system, the door trim material is useful. It helps to understand the roles of the casing, skirting board, and profiles. In a special zone, these roles are preserved only in the form permitted by the approved documentation.

The wall panel near a fire-rated opening must have an exact finish boundary

If the corridor is finished with wall panels, the vertical line of the fire partition may intersect not only the cornice but also the panel system.

Before purchasing, you need to know:

• whether the panel reaches the opening;
• where its front plane ends;
• whether an end profile is needed;
• which molding is used;
• where the horizontal band ends;
• how the panel joins the door assembly;
• which section belongs to the fire partition.

Without this, the purchaser may calculate a standard wall module, and on site it will turn out that a separate vertical and a short horizontal are needed near the fire partition.

Special panel wall module

Can create:

M‑PG02 = vertical terminating molding + short horizontal + skirting section + upper band section.

If the unit repeats 24 times, procurement receives M‑PG02 × 24.

Why this is stronger than a general allowance

The short piece near the opening is known in advance. It is not an “unforeseen cut.” Therefore, it must be a full line item, not a hope for an offcut.

Repeating fire doors need to be turned into standard units PG-D01, PG-D02, and PG-D03

On a hotel or office project, the same door scheme can repeat dozens of times.

For example:

• PG‑D01 — single-leaf type 1 door;
• PG‑D02 — double-leaf door;
• PG‑D03 — tall door in a public area;
• PG-D04 — door between the corridor and the elevator lobby.

Each type gets its own decorative schedule.

What is counted once inside PG-D01

• left part of the ceiling cornice;
• right part;
• endings;
• skirting board on the left;
• skirting board on the right;
• wall molding;
• horizontal band;
• finishing profile of the panel;
• finishing;
• marking.

If PG-D01 repeats 40 times, there is no need to count forty doors independently.

Why the same door class does not mean the same decorative geometry

Doors can differ in width, height, architraves, position in the wall, adjacent profile, and interior zone. Therefore, typification is based not only on the fire rating but also on the geometry of the decorative assembly.

Single-leaf and double-leaf doors

If the opening width changes the length of the upper section, the position of the ends, and the side piers, these are two different PG types.

High door

The upper zone is checked with particular care. If there is little space between the top of the door assembly and the ceiling cornice, the profile cannot be "squeezed in" by analogy. An approved section is required.

A hotel corridor is better treated as regular sections plus special assemblies, rather than as a single perimeter

Practical scenario:

• 42 rooms;
• 2 fire compartment boundaries;
• 4 special doors;
• one type of ceiling cornice in the main area;
• one type of skirting board;
• framed moldings between doors.

Calculation error:

corridor perimeter × KZ.

Correct:

STANDARD SECTIONS + PG‑ASSEMBLIES + ENDS + SHORT PARTS + RESERVE.

Conditional schedule

Until the last line is resolved, the final wholesale order is not released.

Why 68 m is still useful

This is the control net footage. After detailing, the sum of all regular and special sections must be logically consistent with it. If the parts list unexpectedly gives 74 m, the cause must be found: ends, returns, an error, or a project change.

How short special parts help cutting

A long plank may leave a remainder of 300–600 mm. If the PG assembly contains a known short section in advance, the remainder can be used efficiently — provided the article number, material, and finish match.

This is proper optimization: the assembly geometry does not change to accommodate the remainder; the remainder is selected to fit the already approved part.

A business center requires several types of special transitions on a single floor

In a business center, the situation is more complex than in a hotel. A single floor may contain:

• elevator lobby;
• office corridor;
• rental units;
• stairwell;
• technical rooms;
• server room;
• utility shafts;
• different fire compartments.

You cannot limit yourself to a single "PG" code.

Typology example

• PG-D01 — office door;
• PG-D02 — stairwell door;
• PG-D03 — technical room door;
• PG-P01 — partition between compartments;
• PG-L01 — elevator hall boundary;
• PG-S01 — special technical opening.

Each code is associated with a detail and a decorative solution.

Why a stairwell cannot automatically be continued as a corridor

Even if the finish looks visually similar, the stairwell area has its own design requirements. First, the working documentation is checked, then a decision is made as to whether the same expensive wooden cornice is needed there at all.

A technical room may not need expensive decor

There is no need to run a wooden profile solely for the sake of formal continuity of the overall line if the architectural design of the technical area does not provide for it.

This simultaneously reduces the risk of an incorrect detail and unnecessary costs.

An evacuation route is a signal to check the documentation, not to invent your own rule

The article does not design evacuation or assign material classes. For procurement, a practical trigger matters: if an area has special requirements under the fire safety design, its decorative finishing cannot be released based only on the interior elevation.

The parts map should appear only after all PG details have been approved

After the special boundaries are closed, the corridor is translated into specific details.

It is this table that becomes the basis for cutting and marking.

Why lengths cannot be taken approximately

The end point at a special joint is fixed. If the left part must end on a specific vertical, an error of 50–80 mm moves the joint into a visible place or forces the installer to change the joint.

Therefore, final lengths are taken from the current project geometry and confirmed on site if the project requires it.

Cutting is subordinate to the joint

If the optimal cutting plan "asks" to make a part 40 mm longer, but the joint defines a specific ending, the geometry does not change. Production looks for another combination of strips.

How to use short offcuts correctly

After distributing the long sections, the offcuts are compared with the already approved K-PG, P-PG, and M-PG parts. If the length fits, the offcut is used. If not, it is not a justification for changing the boundary.

Material, finish, and commercial length must be fixed for each special element

The phrase "wooden cornice" is too general.

For example, the current KZ-006 has different configurations:

• MDF — 55 × 22 × 2600 mm;
• beech — 55 × 20 × 2400 mm;
• oak — 55 × 20 × 2400 mm.

A single KZ-006 code does not define either the material or the commercial length.

Why this matters for special assemblies

A short left part of 2150 mm can conveniently be cut from a single 2400 mm strip. Another part of 2520 mm no longer fits such a configuration, but it does fit into 2600 mm MDF. However, this does not mean that the purchaser can replace oak with MDF just for the length.

The material is a design decision. Cutting is adjusted to the approved configuration.

If required cornices wholesale, the product category helps select a specific KZ, but a special PG map determines its actual details on site.

The finish on both sides of the door may differ

If the corridor and hall have different colors, two purchasing versions of the same profile may appear in the PG unit. They must not be mixed during cutting after the final finish.

Special parts must be labeled, supplied, and installed as separate PG kits

After the geometry is approved, an operational task remains: do not confuse special parts with regular long linear trim.

If all KZ-006 are in one bundle, the installer is not required to determine by appearance which strip belongs to PG-01 and which belongs to a regular wall.

Therefore, the labeling of a special part must answer at least the following questions:

• which object;
• which floor;
• which PG boundary;
• which side;
• which SKU;
• which material;
• what finish;
• which finished or production part;
• which version of the assembly.

Example:

FLOOR 4 / PG‑02 / KZ‑006 / OAK / O‑01 / RIGHT PART / R02.

Why a “special part” should not dissolve into the regular reserve

The regular KZ‑006 reserve may contain whole planks, but a special PG element may have:

• exact length;
• prepared end;
• separate finish;
• attachment to the left or right side;
• its own version.

If such a part is lost, it cannot be replaced with the first available strip without re-checking.

Delivery by installation sequence

The special kit must arrive together with the area where it is needed.

Weak scenario:

• a standard corridor curtain rail arrived today;
• the PG parts will arrive in two weeks;
• the installer temporarily assembles it "as usual";
• then the section has to be redone.

Strong:

FLOOR 4 / CORRIDOR = STANDARD SECTIONS + PG‑D01 × 2 + PG‑P01 × 1 + RESERVE.

A floor set is considered complete only when both standard and special items are ready.

Floor-by-floor table

So the warehouse does not send a "almost complete" set to the floor.

What to do when repacking

If long factory packs are split by floor, the new packaging retains the PG code. You cannot write only "cornice 4th floor".

Changing the door after ordering

If the following have changed:

• dimensions;
• position in the wall;
• door type;
• platband;
• fire-rated assembly;
• adjacent profile;

the entire adjacent decorative set is being checked.

It is not certain that the total linear meters will change much. But the finished lengths, ends, and joint points may become different.

Why the total linear meters can hide a serious revision

Before changing the door:

• left part KZ — 2120 mm;
• right — 2380 mm.

After shifting the opening by 120 mm:

• left — 2240 mm;
• right — 2260 mm.

The total remained 4500 mm.

If the buyer checks only the total linear meters, they will not notice the revision. But two old finished parts no longer fit.

Node version is required

Working scheme:

• PG‑D02 / R01 — original door;
• PG‑D02 / R02 — new width or position;
• R02 is effective from the date ___;
• old R01 parts are stored separately or redistributed only after inspection.

A reorder must repeat the part code, not the general product name

Not:

“Need one more curtain rod KZ‑006.”

But:

PG‑02 / K‑PG02P / KZ‑006 / oak / O‑01 / R02 / right part / quantity 1.

If you need cornices wholesale from the manufacturer, such a code allows the manufacturer to understand that this is not a new standard rail, but a repeat of a specific project part.

How to divide responsibility

For the article, it is especially important not to mix up roles.

Architect / specialized designer — approves the decorative and special assembly within their competence and project documentation.

Fire safety specialist / relevant designer — determines the requirements of the special fire safety section and the acceptability of the solution where required.

Procurement — translates the approved geometry into SKUs, materials, lengths, quantities, marking, and delivery.

Molding manufacturer — produces the agreed product according to the ordered configuration.

Installer — implements the approved solution rather than inventing a new assembly on site.

What to do if the documentation is contradictory

If the interior elevation shows a continuous KZ, while the special assembly shows an end, one cannot choose the “more recent image” based on appearance. The contradiction must be officially resolved by the project team and an agreed version issued.

Until then, the special lengths remain unconfirmed.

15 mistakes, a checklist, and control before bulk purchasing

1. Treating a fire door as an ordinary opening

Why it happens: the dimensions are similar to neighboring doors. Consequence: a standard decorative assembly is mechanically transferred to a special door. How to prevent it: a separate fire-door code and a reference to the approved assembly.

2. Automatically running the curtain track through a special boundary

Reason: a continuous line looks more aesthetically pleasing. Consequence: the wrong geometry is purchased, and installation runs into a design conflict. Prevention: the question “continue or terminate?” is resolved before cutting.

3. Resolving the assembly on site without approved documentation

Reason: deadlines are tight. Consequence: the temporary solution becomes the actual one and later requires rework. Prevention: the special zone is not released for bulk installation until the assembly is closed out.

4. Treating the corridor as only a total perimeter

Reason: the estimate already contains 68 m. Consequence: gaps, terminations, and short pieces are not accounted for. Prevention: K‑01A, K‑01B, K‑01C + fire-door sets.

5. Not transferring special door tags into the procurement list

Cause: procurement works only from interior elevations. Consequence: fire boundaries disappear from logistics. Prevention: fire partition map with axes and types.

6. Do not account for skirting, moulding, and cornice simultaneously

Cause: sections are handled by different contractors. Consequence: one vertical boundary receives several uncoordinated solutions. Prevention: a single assembly along the entire wall height.

7. Creating four independent decorative solutions for one fire partition

Cause: each profile is calculated separately. Consequence: terminations do not align along a single architectural axis. Prevention: fire partition kit with a shared boundary coordinate.

8. Do not encode repeating assemblies

Cause: all doors appear identical. Consequence: each is calculated manually and different lengths result. Prevention: fire partition door D01 × quantity.

9. Treating doors of different geometry as one type

Cause: the door class or grade is the same. Consequence: different opening widths break decorative details. Prevention: typification by actual decorative geometry.

10. Trying to replace a door system element with a decorative profile

Reason: desire for visual unity. Consequence: unauthorized modification of the assembly. Prevention: decorative elements only where permitted by the approved solution.

11. Ordering old lengths after changing the door

Reason: the total footage has barely changed. Consequence: the left and right parts no longer fit. Prevention: versioning of the PG.

12. Not labeling special parts

Reason: the item code is the same as for a regular section. Consequence: a short PG part ends up in the wrong place. Prevention: PG code, side, version.

13. Using regular stock as a replacement for a special part without checking

Reason: the same KZ is in stock. Consequence: the material is available, but the required end or length is not. Prevention: first restore the PG set.

14. Independently assigning the fastening method

Reason: the standard scheme is familiar to the installer. Consequence: the fastening is not linked to the approved special assembly. Prevention: use only the agreed installation documentation.

15. Prioritizing aesthetics over the requirements of the approved assembly

Cause: a continuous line seems "more correct." Consequence: the architectural idea begins to conflict with the special design solution. Prevention: first the constraints of the assembly, then aesthetics within the permissible options.

Checklist before ordering