Earthworks in Morocco: regulations, surveys and excavation acceptance

Earthworks in Morocco are not governed by a single product standard; they depend on the documents prepared beforehand and on a few laws. The topographic survey must be drawn up by a surveyor registered under Law 30-93, the geotechnical report fixes the founding level, and spoil has to be removed to authorised sites under Law 28-00. Large projects may need an environmental assessment (Law 49-17), and coastal plots are subject to the Coastal Law 81-12. On site, the setting-out and the excavation bottoms are the two hold points.

Scope

This page covers general excavation, trench and pit digging for foundations, backfilling, the removal of spoil and the granular layers placed under ground slabs (hardcore, unbound graded aggregate, geotextile). It includes the protection of open excavations and the attention owed to neighbouring buildings.

It begins with the topographic survey and the setting-out accepted on the ground, and finishes when the excavation bottoms have been accepted, just before the blinding concrete. Retaining walls and deep basements fall under their own page, as do the foundations themselves.

Regulatory table

Reference, edition, status, the text that makes the rule mandatory and the verified source (standards catalogue 2026-10-25; NM statuses checked against the official list of the Ministry of Industry and Trade).

ReferenceEditionStatusText making it mandatorySourceNote
Loi n° 30-93
Exercice de la profession d'ingénieur géomètre-topographe		consolidée (adala)mandatoryThe text itself (published in the Official Bulletin)full textOnly a registered surveying engineer (IGT) may produce the survey and levelled plans on which the earthworks are measured.
Loi n° 28-00
Gestion des déchets et leur élimination		—mandatoryThe text itself (published in the Official Bulletin)État marocainExcavated material and site waste go to authorised destinations; the CPS should say where and who pays.
Loi n° 49-17
Évaluation environnementale		2020 (version adala)mandatoryThe text itself (published in the Official Bulletin)full textEnvironmental assessment: check at sketch-design stage whether a large project is subject to an impact study.
Loi n° 81-12
Loi relative au littoral		texte diffusé par l'agence urbaine de KénitramandatoryThe text itself (published in the Official Bulletin)full textCoastal law: on any seaside plot, confirm the non-buildable strip and public access before planning the dig.
Décret n° 2-02-177 du 22/02/2002
Règlement de construction parasismique RPS 2000 version 2011		version consolidée du décret au 11/11/2024mandatoryThe text itself (published in the Official Bulletin)full textThe geotechnical report gives the site class used by the seismic code, which the structural engineer needs.
NM 10.1.020
Matériaux de construction Granulometrie et granulats		1974approved—IMANORHomologated standard on grading and aggregates; a contractual reference for fill and sub-base materials if the CPS cites it.

Materials and documents to request

MaterialStandardsSupporting documentsBasis
Unbound graded aggregate and all-in fillNM 10.1.020Quarry origin and grading stated on the delivery note, consistent with what the CPS describes.Specification (CPS) requirement
Hardcore (dry stone, rubble)—Clean, hard and non-friable stone, approved on a sample by the architect before the first loads arrive.Good practice
Geotextile separation layer—Product data sheet and roll labels; laps and placement as shown on the architect's detail.Good practice

Who does what

PartyRole
Registered surveyor (IGT)Produces the topographic survey tied to the reference grid, checks title and plot concordance, and sets out axes and levels.
Geotechnical engineerPlans the boreholes, reports on soil, groundwater and site class, and confirms the founding soil when the bottoms are opened.
ArchitectAccepts the setting-out against the permit, follows the excavation and signs off the bottoms with the geotechnical engineer.
Earthworks contractorDigs to the levels on the drawings, shores or batters the sides, protects neighbouring footings and removes spoil to authorised sites.
Client (owner)Commissions the survey and the soil investigation early, and checks that the contract covers spoil removal and any shoring.

Inspection milestones

  1. Topographic survey and title concordance Legal obligation
    Survey signed by a registered surveyor, boundaries and levels shown, plot concordant with the land title.
  2. Geotechnical survey Specification (CPS) requirement
    Soil report received, groundwater and site class stated, recommendations passed on to the structural engineer.
  3. Setting-out accepted Specification (CPS) requirement
    Markers recovered, setbacks and axes measured against the permit, site datum fixed outside the dig area.
  4. Earthworks completed Good practice
    Excavation measured against the drawings, spoil removal documented, open trenches fenced and protected from run-off.
  5. Excavation bottoms accepted Specification (CPS) requirement
    Bottoms at the design level, soil matching the report, faces stable, neighbours' footings undisturbed.

Common non-conformities and follow-up

FindingAction
Groundwater appears that the soil report did not mention.Pause the dig, inform the geotechnical engineer and agree a dewatering method in writing before continuing.
A neighbouring wall shows cracks or its footing is exposed.Stop excavating alongside it, record its condition with photos and a joint report, then shore it as the structural engineer prescribes.
Over-excavation below the design level.Do not refill with loose soil; the structural engineer specifies the make-up, usually lean concrete.
Spoil tipped without a receipt from an authorised site.Ask the contractor for disposal evidence and withhold payment of that item until it is provided.

Frequently asked questions

Do I need a surveyor before digging?

Yes. In Morocco levelled plans must come from a surveying engineer registered under Law 30-93, and the setting-out relies on that survey.

Why wait for the soil report before excavating?

It sets the founding level and warns of groundwater or weak layers. Digging without it means guessing the depth and possibly paying twice.

Where can excavated soil be taken?

Only to destinations authorised under Law 28-00. Keep the tipping receipts in the project file.

Who signs off the excavation bottoms?

The geotechnical engineer and the architect, with the structural engineer or inspection body where appointed. Blinding concrete is poured straight after.

Are there special rules on the coast?

Yes. The Coastal Law 81-12 restricts building near the shoreline and protects public access, so check it at sketch-design stage for any seaside plot.

Sources, author and revisions

Written by , architect · under review · updated . Professional reading, separate from the text of the standard: each requirement is classed as a legal obligation, a specification (CPS) requirement or good practice.

Revision log

All standards for this trade (51)

In short: for the "Earthworks" trade, the library lists 4 Moroccan regulation(s), 0 mandatory Moroccan standard(s), 2 approved NM and 9 foreign reference(s) used as equivalents.

Moroccan regulations (4)

Approved Moroccan standards (NM, voluntary) (2)

Eurocodes (3)

European and French standards (EN, NF, DTU) (4)

Other jurisdictions (equivalents) (2)

Cross-cutting texts (all trades) (36)

2026 reference prices — Earthworks

Public reference prices from the CITURBAREA materials library (October 2026), in dirhams excluding VAT; 20% VAT on top (incl. VAT = excl. VAT × 1.2), Rabat-Salé-Kénitra base. These are benchmarks, not supplier prices.

MaterialFrom (excl. VAT)From (incl. VAT)Range excl. VATReliability
Géotextile6,66 DH / m²7,99 DH / m²6,66 DH – 6,67 DHC (indicative)
Tout-venant 0/40 (rendu)100 DH / m³120 DH / m³100 DH – 180 DHC (indicative)

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2 materials for this trade in the materials library. Gros œuvre · VRD & extérieurs

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