Requirement
We receive the requested standard, loading or class and the permitted damage criterion.
Heavy closures · two leaves · documentation
Steel configurations assessed as complete assemblies for applications where the project specifies protection against blast effects.
Class, design loading and compliance are confirmed only for the documented configuration
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Need engineering as well? SPW Engineering can coordinate the contracted documentation with fabrication and installation for this application.
Special-door and security-gate engineering01 — Approach
A closure intended for an application with blast-protection requirements must be considered together with its frame, hinges, locking mechanisms, anchors and supporting structure. The real photographs show a two-leaf swing configuration without automatically assigning a resistance class.
Before quotation, we clarify the project requirement, opening geometry, load direction, operating method and responsibility for verification. Pressure, impulse, damage level or standard values are taken only from approved technical documentation; they are not inferred from an image or visual similarity to another model.
02 — Distinct real model
The three real photographs show a two-leaf swing configuration with heavy external hinges and a central mechanical locking system. The model is presented separately from the indicative bunker doors and the radiation-shielding gate.



03 — Scope
04 — Process
We receive the requested standard, loading or class and the permitted damage criterion.
We review the opening, supporting wall, anchoring, opening direction, access and utilities.
We define the assembly, verification method and responsibility boundaries in the quotation.
Fabrication, installation and adjustment follow the project-approved documentation.
05 — Documentation
Send opening dimensions, supporting-structure drawings, the protection standard or requirement, pressure and impulse or requested class when defined, load direction, accepted damage level, operating method, location and required verification or acceptance method. Without these inputs, we can provide only preliminary clarification, not a performance statement.
Request a technical assessmentConfiguration, required inputs, installation, maintenance and limits of documented performance. This sheet does not replace project-specific documentation.
06 — Technical clarifications
Steel configurations assessed as complete assemblies for applications where the project specifies protection against blast effects. Class, design loading and compliance are confirmed only for the documented configuration
Send opening dimensions, supporting-structure drawings, the protection standard or requirement, pressure and impulse or requested class when defined, load direction, accepted damage level, operating method, location and required verification or acceptance method. Without these inputs, we can provide only preliminary clarification, not a performance statement.
Single- or double-leaf steel swing closure; Frame, hinges, locking and operating mechanisms; Anchoring and integration with the supporting structure; Fabrication, installation, adjustment and agreed documentation. The final scope is defined after reviewing the project and site conditions.
Requirement: We receive the requested standard, loading or class and the permitted damage criterion. Interfaces: We review the opening, supporting wall, anchoring, opening direction, access and utilities. Configuration: We define the assembly, verification method and responsibility boundaries in the quotation. Execution: Fabrication, installation and adjustment follow the project-approved documentation.
Photographs support an initial assessment but do not replace dimensions, quantities, materials and access conditions. Price, schedule, transport and included work are defined in the quotation for the specific project.
Request documents applicable to the quoted configuration: drawings, materials, inspections and, where required by the project, test reports or certificates. A photograph or commercial name alone does not demonstrate a protection rating or certified performance.
08 — Contact
Send photographs, drawings, dimensions, location and schedule. We will return with the questions needed for a technical quotation.