Page 46 - SIM Guide to annual assessment_v2.0_Dec 2021

Silo

INSPECTION OF SILO ROOF

GOOD PRACTICE:
▪ Verify your drawings for potential design errors

▪ Inspect beam/silo wall connections to detect potential workmanship errors or signs of

deterioration
▪ If you have doubts, contact your SIM Country or Regional regional champion.

Damaged silo beam pocket: risk of roof
collapse

Repaired silo beam pocket

REMARKS:
▪ Structures exposed to heat can lead to plastic deformations (case of clinker silo with

excessive filling degree where clinker heat can affect the mechanical properties of
the support structure of the conical roof)
▪ Degree of filling of clinker silo must respect a minimum distance of 2m to the roof

structure to avoid heat exposure.
▪ Silo flat roofs are typically designed with a steel structure resting on silo walls. A

concrete cover typically sits then on the top (see example of "beam pocket
arrangement" below)
▪ Two critical factors may compromise the structural integrity overtime:
1. Small or reduced bearing area (small base plate, beams covering only part of the
silo wall width)
2. Beam connection (welded or bolted) to the base plate not allowing for
expansion/contraction of the beam

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