Balloon Framing

Longitudinal balloonframing with H-10R’s

Longitudinal balloonframing with plywood blocks

Transverse balloonframing with 2by to ledger

Transverse balloonframing with plywood to ledger

 

Education – Basic Engineering

Diagram – 16,000 Pounds of force each side-2arrowheads

Diagram – 14 stt’s each side

Diagram – 14 ft of plywood each side

Diagram – 14 bolts each side

 

Education – What Happens

Unreinforced – reinforced cripple wall defined

General Diagram – Typical failue points

General Diagram – Transfer Tie Failure

General Diagram – Transfer Tie Failure Horizontal

General Diagram – Cripplewall Failure

General Diagram – Cripplewall Failure TWO

General Diagram – cripple wall by stairs

General Diagram – Bolt Failure

General Diagram – Bolt Failure TWO

Cripple wall – 3 EQ forces consequences

Education –  Overturning Forces

General Diagram – Overtunring + holddowns no force

General Diagram – Overtunring, holddowns pull on fdn

General Diagram – Overturning, holddown with cement blocks

General Diagram – Overturning, no holddowns, closeup.

General Diagram – Overturning, no holddowns,sill tears

General Diagram – Overturning, no uplift

General Diagram – Overturning,holddowns fdn breaks

General Principles – Concrete under hold down close detail

Stick house – Overturning forces

 

Education – Shear Wall Construction

General Diagram – Cripplewall Failure General Principles – Nailing of plywood

General Principles – Shear panel – stepped foundation

General Principles – Shearwall framing

General Principles Load Path

General Principles Rreinforced cripple wall only.

General Principles Shear Wall – structural components

 

Education – Don’t Ignore Top Plates

EQ forces travel thru break in topplate

General Principles – Topplate splice

Topplate splice nailed close up

 

Education – Misc.

General Diagram – cripple wall by stairs

General Diagram – Ground stationary and house moves

Shear Wall Deformation – rectangle

 

Lag Floor Connectors – Save The Ceiling Drywall

Lag bolts. side view

Lag Bolts Detail

Lag bolts – front view

 

Misc.

Addition -Tension tie

Cross-grain bending

Double mudsill with LTP-4s

Foundation Follows Porch

Wall obstruction detail

 

Missing Top Plates

Missing topplate – 2by to next joist

Missing topplate – ply DIA to next joist

Missing topplate-Sistered 2by

 

New Footings

New footing and shear wall to one joist,

New footing and shear wall to two joists one story

New footing and shear wall to two joists two story

New footing and shear wall with plywood blocking

 

Shear Wall Repairs

Shearwall repair – DIA stapled to existing shear wall with 2×10

Shearwall Repair – staple 2by to subfloor

Shearwall repair- ply DIA to next joist

Shearwall repair-no blocking-flushcut repair

 

Short Shear Wall

Short Shearwall – UFP and 2 x 10 shear wall

Short Shearwall – UFP with 2×4 sistered to topplate+2×10

Short Shearwall – UFP with 2×4 sistered to topplate+L-90

Short Shearwall – UFP with plywood shear wall

 

New Sill to Side of Foundation

Sidebolt, capped transverse 2 joists

Sidebolt-longitudinal capped wall

Sidebolt – 4×4.to side, obstruction bypass

 

Sidebolt – 2×8 and 2by DIA

Sidebolt -2×8 direct to joist

Sidebolt -2×8 LTP4 direct to joist

Sidebolt -2×8, plywood to next joist

Sidebolt -2×8. ply+ blocking to joist BAUM

 

Side Bolt –  No Cripple Wall, No Blocking

Sidebolt 2 x 8 and .75 ply 7 inch bolt

Sidebolt no blocking, 2 x 8 and 1 1-8th ply

 

Sill Connections

Sill connection – Four panel flush cut

 

Nailed Blocking

Detail – blocked UFP Sill Connection –

Four Panel Nailed Blocks Sill Connecton –

Nailed Blocks, two panel

 

Reverse Blocking

Reverse block – bolts in wide foundation

Sill Connection – Reverse Block narrow sill

Sill Connection – Four panel reverse blocking

Sill Connection – Reverse blocking + UFP

Sill Connection – Reverse Block Breakdown

Sill Connection – Reverse blocking + bolt

Sill Connection- Three panel reverse blocking

 

Stapled Blocking

Sill Connection – Four Panel Stapled Blocks

Sill Connection – Stapled Blocks

Sill Connection Plywood stapled to blocks.

Sill Connecton – plywood stapled to blocks.

ZX Sill Connection – Stapled Blocks

 

Staple to Floor

Sidebolt -staple plywood to floor Short shearwall

Sidebolt -staple plywood to floor, 2 x 12 and ply

Sidebolt -staple plywood to floor, 2 x 8 and ply

 

Splices

General Principles – Horizontal seam – sheetmetal splice

General Principles – Horizontal stapled splice

General Principles – Topplate splice

Topplate splice nailed close up

 

URFP Details

Detail – blocked UFP

UFP and L90 Perp

URFP and L90 Parallel