Structural Engineering

Timber Beam-to-Post Connection

An enlarged timber beam and post connection identifies the post cap, through-bolts and bearing arrangement.

Floor Joists Bearing on a Dropped Beam

A wood floor assembly identifies joists, rim joists, blocking, subfloor and the dropped beam supporting the joist ends.

Roof-to-Wall Framing Detail

A roof framing cutaway identifies rafters, ceiling joists or rafter ties, top plates and supporting wall studs.

Wood Wall and Floor Assembly

A wall and floor cutaway relates studs, plates, sheathing, floor joists and subfloor at the floor-to-wall junction.

Roof-to-Wall Connection Cutaway

An enlarged timber eave connection identifies roof sheathing, rafters, plates, ceiling framing and wall studs.

Wood Exterior Wall Layers

An exploded wall section identifies cladding, weather-resistive layers, structural sheathing, studs, insulation and interior board.

Window Header and Jamb Framing

A framed wall opening identifies the header, king studs, jack studs, rough sill and cripple studs.

Wood-Frame Building Connection Overview

A house framing cutaway locates roof-to-wall connections, floor framing, wall-to-floor junctions and foundation anchorage.

Exploded Wood Building Assemblies

Separated roof, wall, floor and foundation assemblies illustrate how timber building systems fit together.

Timber-Frame Structural Members

A timber building frame identifies roof and wall members and shows their relationship to the supporting foundation.

Exploded Light-Frame Building Construction

An exploded two-story timber structure identifies roof framing, sheathing, walls, floors, foundations and interior supporting elements.

Conceptual Floor Framing Plan

A residential floor framing plan locates joists, beams, bearing walls, framed openings and associated deck areas.

Freestanding Floor Frame

A timber floor frame identifies floor joists, rim members and supporting wood bearing pads over concrete piers.

Wood Shear-Wall Assembly

A wood structural panel shear wall identifies end studs, hold-downs, sill anchors and the in-plane lateral load path.

Roof Tie and Uplift Load Path

A roof tie and a wall-to-foundation anchorage inset illustrate the connections along a continuous uplift load path.

Wood Wall Hold-Down Connection

An enlarged wall-end connection identifies end studs, a hold-down, sill plate and anchor rod into a concrete foundation.

Timber Building Gravity Load Path

A framed house cutaway traces vertical loading through the roof, walls and floor to footings and bearing soil.

Gravity and Lateral Load Paths

Paired building-frame diagrams distinguish downward gravity loading from lateral force transfer through diaphragms and shear walls.

Roof Gravity Loads through a Wood House

A house cutaway relates roof gravity loads to the supporting roof framing, wall system, foundation and soil.

Three Levels of Structural Anchorage

A building cutaway highlights the roof-to-wall, wall-across-floor and wall-to-foundation connections in a continuous load path.

Building Uplift Force Balance

A framed-building free-body illustration compares wind uplift, dead weight and foundation anchorage demand on a consistent load basis.

Roof Uplift and Connection Equilibrium

A house roof connection and an isolated roof free body illustrate the vertical equilibrium relationship between uplift, dead load and anchorage demand.

Wood ADU Gravity Load Path

A small wood accessory dwelling unit cutaway traces roof loading through exterior and interior bearing walls to continuous footings.

House Gravity and Lateral Load Paths

Paired house illustrations trace gravity loading to soil and lateral loading through roof diaphragm, shear walls and anchorage.

Grid A Shear-Wall Elevation

A wood structural panel wall elevation identifies an example effective wall segment, end anchorage and panel fastening references.

Wood Wall-to-Foundation Connection

A framed wall on a concrete stem wall identifies sill anchorage and the continuous footing below the wall.

Continuous Footing Reinforcement Section

A reinforced-concrete stem wall and strip footing illustrate longitudinal and transverse reinforcement above the supporting soil.

Isolated Footing Reinforcement

A reinforced-concrete column and isolated footing illustrate column ties, bottom reinforcement and concrete cover.

Footing Geometry and Applied Actions

A concrete footing and column in soil identify plan dimensions, thickness, embedment, axial load, horizontal force and applied moment.

Eccentric Footing Bearing Pressure

Pressure-distribution sketches compare full contact, the kern boundary and partial contact for a compression-only footing idealization.

House Foundation Plan and Typical Section

A residential foundation plan and section relate continuous perimeter footings, an interior foundation line and a supporting wood wall.

Retaining Wall Stem Earth Pressure

Pressure-distribution sketches separate soil self-weight and surcharge contributions before combining them into total lateral pressure.

Steel Beam Shear-Tab Connection

An enlarged steel connection shows the beam web overlapping a shear tab, with bolts through the overlapping steel components.

Structural Steel Connection Angle

A steel beam and column connection identifies the connection angle, beam web and structural bolts.

Bridge Abutment Bearing Plate

A steel stringer bearing on a concrete abutment is shown with a bearing-plate plan and separate anchor inset; restraint and bearing-device design require separate checks.

Deck Ledger and Joist Hangers

An exterior deck connection identifies the ledger board, flashing, joist hangers and supported timber joists.

Elevated Deck Framing Plan

A deck plan identifies ledger attachment, joist layout, beam support and posts, with dimensions and final design checks coordinated separately.

Deck Ledger Section and Front View

A deck ledger section and front view identify flashing, joist hangers and fasteners referenced to a verified connection schedule.

Deck Post and Concrete Footing

A timber post, post base and concrete footing illustrate the connection and bearing geometry, with final sizes dependent on calculation and site requirements.

Residential Foundation Crack Map

A house foundation plan marks observed cracks and reference points for monitoring movement over time.

Concrete Crack Pattern Examples

Illustrated concrete surfaces compare fine surface cracking, map cracking, an isolated crack and a wide open crack without assigning a cause from appearance alone.

Foundation Settlement Patterns

Building sketches compare uniform settlement, rigid-body tilt and differential settlement in relation to soil support movement.

Conceptual Foundation Underpinning Options

Sections compare helical-pile underpinning, concrete-pad underpinning and permeation grouting beneath existing structural support.

Pile Underpinning and Compaction Grouting

Enlarged below-ground illustrations compare helical piles, mass-concrete underpinning and compaction grouting concepts.

Exterior Waterproofing at a Stable Crack

A sequence of exterior foundation views illustrates surface preparation, compatible crack treatment, membrane work, protection and drainage concepts after assessment.

Combined Seismic Retrofit Concept

A multi-story building illustrates added steel bracing and an FRP overlay as conceptual seismic strengthening measures.

Building Condition-Assessment Cutaway

A house cutaway highlights roof, framing, chimney, wall, sill and foundation observations requiring assessment in context.

House Plan and Effective Shear-Wall Segments

A house grid and opening layout identify example effective shear-wall segments for coordination with a structural calculation set.

Wood Roof Framing Plan and Section

A roof plan, section and framing view relate rafters, ridge board, ceiling ties and bearing-wall layout.