Structechnique is a provider of low-cost Excel spreadsheet solutions for civil and structural engineering elements and design related issues. Structural elements include retaining walls, pre-stressed beams and box culverts designed in accordance with relevant Eurocodes. Design issues addressed include buckling, elastic impact, dynamics and tuned mass dampers and differential temperature effects.

Grillage models* based on stiffness matrix analysis are available for 4-, 6- and 8-beam normal or skewed bridge single-span decks, deck slab, abutment and wing walls. Integral or ‘ladder’ type decks can also be analysed using rotational springs or by omitting supports. 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 and box culverts designed in accordance with relevant Eurocodes. Design issues addressed include buckling, elastic impact, 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.

* Requires Excel 2016

Arch mechanism analysis

Arch mechanism analysis based on paper by WJ Harvey as recommended by CS 454 – 33 failure mechanisms analysed for…

Arch Model Analysis

A plane strain arch model analysis with optional pins at crown and foundations and optional spring supports using a stiffness…

Beam on elastic foundation analysis + Stiffness Matrix

‘Beam on springs + SM’ provides a stiffness matrix analysis for a 41-node beam with 3 degrees of freedom –…

Boussinesq wheel load distribution

‘Boussinesq wheel load distribution’ includes Boussinesq calculation of vertical ground stress at depth for EC1-2 and the NA to EC1-2…

Box culverts

‘Box culverts’ includes analyses of all relevant load cases using a stiffness matrix solution with spring supports and compilations of…

Box culverts + grillage

‘Box culverts + grillage’ includes analyses of all relevant load cases using stiffness matrix solution and compilations of load combination…

Bridge abutment free-standing

‘Bridge abutment free-standing’ provides design calculations for free-standing bridge abutments in accordance with Eurocode 7 and PD 6694-1, including bearing…

Buckling

'Buckling' calculates critical buckling loads for pinned, fixed and spring supported struts. It also includes calculations for stepped, tapered and…

Cantilever retaining walls

'Retaining walls' provides design calculations for gravity retaining walls with variable sloping backfill in accordance with Eurocode 7, including bearing…

Differential temperature effects for precast beam & slab bridges

This spreadsheet calculates non-linear residual differential temperature effects for pre-stressed beam and slab bridge decks, including graphical representations of results. Contents…

Differential temperature effects for solid slab and beam infill

This spreadsheet calculates non-linear residual differential temperature effects for solid slab and precast beam infill bridge decks, including graphical representations…

Differential temperature effects for steel beams and slab bridge

This spreadsheet calculates non-linear residual differential temperature effects for pre-stressed beam and slab bridge decks, including graphical representations of results. Contents…

Elastic impact

'Elastic impact' provides calculations of the effects of dropped weights and slow moving vehicles on a range of simply supported…

Embedded retaining walls

‘Embedded retaining walls’ provides limit equilibrium design calculations for cantilever and high-level propped embedded retaining walls in accordance with Eurocode…

Footbridge model for 1 beam 1 span

A model analysis for a single span footbridge comprising a single main beam supported on pinned or rotational springs using…

Footbridge model for 1 beams 2 spans

A model analysis for a two-span footbridge comprising 2 main beams supported on pinned or rotational springs using stiffness matrices…

Footbridge model for 1 beams 3 spans

A model analysis for a three-span footbridge comprising 2 main beams supported on pinned or rotational springs using stiffness matrices…

Footbridge model for 2 beams 1 span

A grillage analysis for a single span footbridge comprising 2 main beams supported on pinned or rotational springs using stiffness…

Footbridge model for 2 beams 2 spans

A grillage analysis for a two-span footbridge comprising 2 main beams supported on pinned or rotational springs using stiffness matrices…

Footbridge model for 2 beams 3 spans

A grillage analysis for a two-span footbridge comprising 2 main beams supported on pinned or rotational springs using stiffness matrices…

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