Blikkenslagersvendeprøven cheat sheet
Blikkenslagersvendeprøven · Keep the key ideas within reach.
Architectural sheet metal, development and weathering details
Verify actual material, exposure, finish and compatibility.
Develop blanks from the supplied bend, seam and neutral-axis model.
Select joining and movement accommodation for the complete assembly.
Trace water routes and inspect relevant concealed interfaces before closure.
Roof assemblies, drainage and maintainable interfaces
Trace the actual structural, thermal, air, vapor and water functions.
Detail penetrations, outlets, edges and interfaces as part of the system.
Material chemistry alone does not specify a safe joining procedure.
Inspection, maintenance access and actual loads belong in the design.
Facade performance, solar integration and safe coordination
Distinguish cladding, cavity, inner weather layer and supporting structure.
Design fixings and movement accommodation for the actual panel and loads.
BIPV combines enclosure and electrical functions with coordinated interfaces.
An open downstream switch does not make every sunlit PV component safe.
Engineering models, drawings, evidence and project decisions
State the system boundary and assumptions before calculation.
Units, sign conventions and uncertainty are part of the answer.
Verification against a specification differs from validation for an intended use.
Drawings need a declared convention and controlled revision.
Classroom models do not authorize physical operation or structural approval.
Welding processes, joint preparation and controlled heat input
Distinguish consumable-electrode, wire-fed and tungsten-electrode process functions.
Joint, material, position and procedure determine actual parameters.
Use the stated heat-input formula and unit conversions consistently.
Written process identification does not authorize live hot work or certify a weld.
Materials, testing and selection
Engineering stress σ = F/S₀ uses original area; E = σ/ε applies to the linear elastic region. Engineering stress itself is not confined to that region.
Toughness = whole curve area; resilience = elastic area
Hardness is not fundamental but correlates with strength
Grain refinement commonly increases yield strength in conventional metallic microstructures, subject to material and scale limits.
Selection needs specific indices (σ/ρ, E/ρ) plus cost and durability
Construction planning, safe boundaries, inspections and controlled changes
Clarify actual responsibility, approved drawings and change authority.
Hazards require task-specific controls, not one universal PPE recipe.
Inspect concealed requirements before they become inaccessible.
Separate net quantities, stated allowances and unresolved handover issues.