# STRAP

> STRuctural Analysis Program – The Structural Engine for Light Gauge Steel

Canonical: https://www.ramcadds.com/products/strap
Source: RAM CADDSYS product catalog — https://www.ramcadds.com/products
Categories: modular-volumetric / steel-design / concrete-design

STRAP is a versatile solution for the design of a wide range of concrete and steel structures including residential and commercial buildings, bridges, industrial facilities, retaining tanks, communication towers, and many more. With a comprehensive workflow that covers the entire design process, STRAP's reliable toolsets meet all the requirements needed for the analysis and design of projects from small-scale plane frame structures to large-scale hi-rise buildings.

STRAP covers the complete structural engineering workflow: from 3D modeling with nodes, frames, slabs, walls, and cables, through rigorous static and dynamic analysis, to detailed concrete and steel design per international codes. Certified by Dubai Municipality for light gauge steel, hot-rolled steel, hybrid structures, and reinforced concrete, STRAP is trusted on landmark projects across six continents. Available in English, Spanish, Chinese, Portuguese, Russian, and Taiwan.

## Why engineers pick it

- **Modeling** — Full 3D model building using nodes, frames, elements, solids, walls, slabs, cables, and springs. Handles arbitrary structural geometry from simple frames to complex irregular buildings.
- **Loading** — Comprehensive automated and user-defined load generation. Wind, seismic, snow, temperature, crane, moving loads, and construction stage loads are all covered.
- **Analysis** — Static, Modal, Response Spectrum, Time History, P-Delta, Slab Deflection, Bridge analysis, and Staged Construction—a complete suite of analysis types for any structural challenge.
- **Output** — Graphic and tabular results with full visualization of deformations, stress diagrams, force envelopes, and code check results. Customizable report generation.
- **Concrete Design** — Reinforced concrete and prestressed concrete design per international codes. Automated rebar scheduling, slab reinforcement maps, and beam/column design with detailing output.
- **Steel Design** — Hot-rolled, welded, cold-formed, and connection design — 11 hot-rolled and 6 cold-formed code implementations. Composite steel-concrete design available. Partners with IDEA StatiCa for connection checks.

## Capabilities

- **Modeling** — Build 3D structural models using a full element library: nodes, frame elements, shell/plate elements, solid elements, wall elements, slab elements, cable elements, and springs. Handles irregular geometry, sloped members, and complex building configurations.
- **Loading Types** — Automated load generation for wind, seismic, snow, and crane loads per applicable codes. User-defined static loads, dynamic loads, moving loads, temperature loads, prestress, and construction stage loads.
- **Analysis Types** — Static linear analysis, Modal analysis, Response Spectrum analysis, Time History analysis, P-Delta second-order analysis, Slab Deflection analysis, Bridge analysis with moving loads, and Staged Construction analysis for phased construction sequences.
- **Results** — Full graphical display of deformed shapes, stress contours, bending moment and shear force diagrams, axial force diagrams, and deflection maps. Tabular output with filtering and sorting. One-click report generation.
- **Concrete Design** — Reinforced concrete design for beams, columns, walls, and slabs per international codes. Prestressed concrete design for post-tensioned and pre-tensioned members. Automated reinforcement schedules and bar bending diagrams.
- **Steel Design** — Hot-rolled and welded steel design per AISC360, BS5950, EC3, IS800, AS4100, CSA S16, and more. Cold-formed steel design per AISI S100, EC3, AS4600. Connection design integrated with IDEA StatiCa CheckBot using the CBFEM method.

## Design codes

- **Hot-Rolled Steel Codes** — AISC 360 (USA) / Eurocode 3 (EU) / BS 5950 (UK) / CSA S16 (Canada) / IS 800 (India) / AS 4100 (Australia) / SANS 10162 (South Africa) / NBR 8800 (Brazil) / GB 50017 (China) / SP 16.13330 (Russia) / IS 1225 (Israel)
- **Cold-Formed Steel Codes** — AISI S100 (USA) / Eurocode 3 (EU) / BS 5950 (UK) / CSA S136 (Canada) / AS 4600 (Australia) / GB 50018 (China)
- **Concrete Codes** — ACI 318 (USA) / Eurocode 2 (EU) / BS 8110 (UK) / CSA A23.3 (Canada) / IS 456 (India) / NBR 6118 (Brazil) / AS 3600 (Australia) / SP 52-101 (Russia)
- **Prestressed Concrete Codes** — ACI 318 (USA) / AASHTO (USA) / Eurocode 2 (EU) / BS 8110 (UK) / BS 5400 (UK) / CSA A23.3 (Canada) / IS 1343 (India) / IRC 18 (India)

## Questions

### What is STRAP structural software?

STRAP (STRuctural Analysis Program) is a comprehensive structural analysis and design software covering concrete and steel structures including buildings, bridges, industrial facilities, and communication towers.

### Is STRAP certified by Dubai Municipality?

Yes. STRAP is certified by Dubai Municipality for light gauge steel structures, hot-rolled steel structures, hybrid structures, and reinforced concrete—making it a fully compliant solution for UAE construction projects.

### What structural codes does STRAP support?

STRAP supports 11 hot-rolled steel codes (AISC 360, Eurocode 3, IS 800, BS 5950, AS 4100, and more), 6 cold-formed steel codes (AISI S100, Eurocode 3, AS 4600, and more), and 8 concrete codes (ACI 318, Eurocode 2, IS 456, and more).

### Can STRAP perform seismic and dynamic analysis?

Yes. STRAP includes Modal analysis, Response Spectrum analysis, and Time History analysis for full dynamic and seismic design. P-Delta analysis is also available for second-order effects.

### How does STRAP handle connection design?

STRAP partners with IDEA StatiCa for steel connection design, using the CBFEM (Component-Based Finite Element Method) through CheckBot and Connections integration.

### What languages is STRAP available in?

STRAP is available in English, Spanish, Chinese, Portuguese, Russian, and Taiwanese—making it one of the most widely localized structural engineering platforms available.

### Can STRAP design light gauge steel to American codes?

Yes. STRAP code-checks cold-formed / light gauge steel members to AISI S100—the American cold-formed standard—alongside Eurocode 3, BS 5950, CSA S136, AS 4600, and GB 50018. Whole-building analysis and thin-gauge member design run on the same model, which is why STRAP anchors light gauge steel workflows in AISC/IBC markets.

### Does STRAP work with Vertex BD for light gauge steel?

Yes. STRAP and Vertex BD exchange models over IFC in both directions: Vertex BD frames the building in light gauge steel, STRAP analyses and code-checks every member, and the verified model flows back toward panel drawings and roll-forming manufacture—nothing re-drawn.

### Can STRAP handle multi-storey cold-formed steel buildings?

Yes. STRAP's specialised finite-element engine and dedicated light gauge steel module carry cold-formed structures to multi-storey scale—whole-building analysis with every thin-gauge member checked to AISI S100, Eurocode 3 or AS 4600. Many tools handle thin-gauge only at low-rise scale; multi-storey cold-formed design is one of STRAP's defining strengths.

### Does multi-storey light gauge steel need structural analysis?

Yes. Beyond one or two storeys, LGS walls and floors are load-bearing structure, and the building needs full structural analysis—gravity, wind and seismic—with every thin-gauge member checked to a cold-formed code such as AISI S100. STRAP runs that analysis on the whole building, volumetric modular apartments included, and returns the verified model to Vertex BD over IFC.

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