Structechnique is a provider of low-cost Excel* spreadsheet solutions for civil and structural engineering elements and design related issues.

Grillage models^{*} based on stiffness matrix analysis are available for 1- or 2-beam footbridges, 4-, 6- and 8-beam normal or skewed 1 to 3-span bridge decks, deck slab, abutment and wing walls. Integral or ‘ladder’ type decks can also be analysed using rotational springs or by omitting supports. The lowest natural frequency is calculated for the footbridge grillage models. Results have been verified by a commercially available structural analysis software program.

Structural elements include retaining walls, pre-stressed beams, steel and concrete composite bridges, pile groups and box culverts designed in accordance with relevant Eurocodes. Design issues addressed include buckling, elastic impact, elastic settlement, dynamics and tuned mass dampers and differential temperature effects.

Spreadsheets include theoretical formulations and explanations of methodologies and allow access to all cell data and formulae (except stiffness matrices). A brief summary and a list of contents is given for each spreadsheet and a pdf copy of calculation extracts is also available.

Technical papers published in The Structural Engineer (February 2017, January 2016 and July 2013) are also available to provide background reading to the structural dynamics and buckling spreadsheets.

^{*} Requires Excel 2016

Spreadsheet summaries and contents:

- Grillage for 4 beam bridge
- Grillage for 4 beam skew bridge
- Grillage for 4 beam 2 span bridge
- Grillage for 4 beam 2 span skew bridge
- Grillage for 4 beam 3 span bridge
- Grillage for 6 beam bridge
- Grillage for 6 beam skew bridge
- Grillage for 6 beam 2 span bridge
- Grillage for 6 beam 2 span skew bridge
- Grillage for 6 beam 3 span bridge
- Grillage for 8 beam bridge
- Grillage for 8 beam skew bridge
- Grillage for 8 beam 2 span bridge
- Grillage for 8 beam 2 span skew bridge
- Grillage for 8 beam 3 span bridge
- Grillage for bridge deck slab
- Grillage for bridge abutment
- Grillage for bridge wing wall type 1
- Grillage for bridge wing wall type 2

- Boussinesq wheel load distribution
- Bridge abutment free standing
- Box culverts
- Box culverts + grillage
- Buckling
- Cantilever retaining walls
- Differential temperature effects for precast beam and slab bridges
- Differential temperature effects for solid slab and beam infill
- Differential temperature effects for steel beam and slab bridges
- Elastic impact
- Elastic settlement
- Foundation springs - Free
- Pile Group Analysis
- Pre-stressed beams
- Reinforced concrete section - Free
- Steel and concrete composite bridges single span
- Steel and concrete composite bridges multi span
- Steel and concrete composite bridges - ladder deck
- Steel U-frame bridge – single-span
- Structural dynamics and tuned mass dampers
- Truss bridge analysis and design for 3 to 16 bays – single-span