GRAVEL, per dm³

Form

Clean, hard, durable natural gravel, supplied per dm³ (loose volume).
Particle size typically 5–20 mm (standard construction grade) unless otherwise specified.
Free from clay, silt, organic matter, salts, and other deleterious materials.
Uniform colour and texture consistent with standard aggregate for concrete/mortar production.

Suitable for use with Portland cement, sand, and water in standard concrete mixes.
Compatible with manual or mechanical mixing methods used in field construction.
Can be stored in open stockpiles on-site, provided it is kept clean and free from soil contamination.
Fits into typical humanitarian construction and logistics workflows, transported in bulk or bags depending on local supply chain.

Acts as a coarse aggregate in concrete, providing volume, structural stability, and improved load-bearing capacity.
Ensures proper mechanical interlock and strength development when combined with cement and sand.
Contributes to the durability and stability of concrete used in foundations, slabs, pathways, WASH infrastructure, and general building works.
Supports production of field-mixed concrete with consistent grading, drainage characteristics, and reduced shrinkage.

OC subscriptions: included in supply or field order tools (e.g. UniField)	OCA OCB OCBA OCG OCP
SC subscriptions: included in supply or field tools	MSF Supply MSF Log APU Casier Départ MSFSK
OC validations: approved for procurement and use by an OC for international or local orders specifying context and activity in Medical Standard Lists (MSL)	OCA OCB OCBA OCG OCP