MEET THE DBI PROS Meet the DBI Pros

MEET THE DBI PROS Meet the DBI Pros Summit October 25, 2006 Amy Lee, Acting Director RESIDENTIAL EARTHQUAKE PREPARATION

MEET THE DBI PROS Residential Earthquake Preparation n Joe Duffy, Senior Building Inspector/DBI n Howard Zee, Structural Engineer/DBI Major Plan Check

MEET THE DBI PROS Earthquake Preparedness Presented by Joe Duffy & Howard Zee - San Francisco Department of Building Inspection DBI Summit October 25, 2006

MEET THE DBI PROS Marina photo 1

MEET THE DBI PROS Marina photo 2

MEET THE DBI PROS Marina photo 3

MEET THE DBI PROS PERSONAL PREPAREDNESS Make your family and home as safe as possible. www. 72 hours. org

MEET THE DBI PROS Develop a Family Emergency Plan n Locate safe shelter areas in your home n Identify places to store emergency supplies n Arrange where to meet after a disaster n Establish a distant phone contact

MEET THE DBI PROS Assemble and Maintain Emergency Supplies n Home n Work n Vehicles n Transportable

MEET THE DBI PROS Your “Grab & Go” Bedroom Kit n Shoes – sturdy, with socks n Crowbar n Leather work gloves n Flashlight n Cash, w/batteries ID, cell phone

MEET THE DBI PROS “Grab & Go” Items n ATM, credit cards n Essential medication and eye glasses n Whistle n Scissors n Watch or clock

MEET THE DBI PROS Water – Minimum 1 gallon/person/dayx 5 Unopened store-bought drinking water – check expiration date n Stored tap water should be purified before using n Store in cool, dark place secure from animals and easy to get to n

MEET THE DBI PROS Home/transportable supplies n n n n Water purification kit First aid kit and instruction book Antiseptic wipes or baby wipes Foods requiring little heat or water Can opener, eating utensils Toilet paper and personal hygiene items Butane barbeque igniter or matches Large garbage bags, duct tape

MEET THE DBI PROS more home/transportable supplies… Battery-operated radio, spare batteries n Flashlights, spare batteries, and bulbs n Blankets for all family members n Warm clothes n Diapers, if needed n Pet food, leash, and carrier, if needed n Tent, sleeping bags n Backpacks to carry emergency supplies n

MEET THE DBI PROS Utilities Train family to turn off utilities, if necessary (not automatically) Natural gas n Electricity n Water n

MEET THE DBI PROS Natural Gas n Teach children to identify the smell of gas (rotten eggs) n Turn off gas if you smell leaks & are unsure n Turn off gas if your meter wheels are spinning

MEET THE DBI PROS n Turn off gas if necessary (suspect leaking gas, broken pipes) n Call PG&E to turn gas back on n Do not turn gas back on yourself

MEET THE DBI PROS Natural Gas

MEET THE DBI PROS Water Turn off water if house is flooding or if water is contaminated

MEET THE DBI PROS Shut off Water, IF necessary n Locate water shutoff n Insert tool in hole & remove cover n Turn water OFF

MEET THE DBI PROS Home Preparedness Structural n Structural evaluation by architect or engineer n n n Seismic upgrade/retrofit Meets Code requirements Do-it-yourself strengthening n n Improves strength, but not a true seismic upgrade/retrofit Not as good, but better than nothing

MEET THE DBI PROS Seismic Upgrade or Seismic Retrofit n Building permit required for voluntary seismic upgrade/retrofit per SFBC 3403. 6 and 3403. 2. 2. 2 n Engineered design by architect or engineer n Civil engineer or structural engineer n Fee: a few thousand $ n It’s a seismic upgrade / seismic retrofit

MEET THE DBI PROS Do-it-yourself Voluntary Strengthening n No drawings required, but must get a building permit n Engineer’s stamp not required n Architect’s stamp not required n It’s NOT a seismic upgrade or retrofit

MEET THE DBI PROS n n n Description of work: “voluntary strengthening work to add anchor bolts and plywood at lowest story, etc” Residential Permit Counter (1 st floor) No drawings, architect, or engineer required Over-the-counter permit approval It’s NOT a “seismic upgrade or retrofit”, it’s simply a seismic “strengthening”.

MEET THE DBI PROS General Guidelines and Tips for Voluntary Strengthening n Adding anchor bolts n Strengthening cripple walls n One size does NOT fit all

MEET THE DBI PROS Anchor Bolts Access and space to work n Mud sill n

MEET THE DBI PROS Anchor Bolt Guidelines California Building Code Requirements n 5/8” or ¾” diameter (A 307 or A 36) n At least 7” embedment into foundation n Spaced not more than 4’ apart n Minimum of 2 bolts per piece n One bolt located not more than 12”, and not less than 5 ½”, from each end of the sill piece

MEET THE DBI PROS Anchor bolt n Epoxy type adhesives best for older concrete foundations (Simpson, CIA, Hilti, etc) n Expansion anchors n Approximate cost per anchor

MEET THE DBI PROS Bolt Sill to Foundation Using Square Plate Washers Square plate washers perform better in quakes than round washers Galvanized steel plates best Plate washers must be a minimum of 2” x 3/16” thick

MEET THE DBI PROS Strengthen Cripple Walls First Floor Crawl Space Cripple Wall A cripple wall is generally the weakest part of older building because it has insufficiently strong sheathing materials. This can cause full or partial collapse in an earthquake. These areas can be strengthened for relatively low cost by correctly applying plywood sheathing to the cripple walls.

MEET THE DBI PROS Plywood Guidelines at Cripple Walls n ½” thick, C-DX or Structural I n Minimum 4’ long segments, but longer segments better n Well distributed among all cripple walls, all sides of house. Cover the corners.

MEET THE DBI PROS Plywood Guidelines at Cripple Walls n n n Use 8 d or 10 d COMMON nails, not box or sinkers, and not 1 ½” shorts Galvanized nails best, but not essential Nail along all edges of each sheet of plywood (add blocking); 4” or 6” o. c. Vent holes A 34 metal connectors

MEET THE DBI PROS Home/Building Preparedness Nonstructural Items n Chimneys n Lighting fixtures n Water heaters n Wall hangings n Furniture n Appliances

MEET THE DBI PROS Water Heaters Earthquake strapping of water heaters n 2 metal straps n 1/3 points n Anchor to studs, not just drywall n

MEET THE DBI PROS Additional Information n 72 hours. org website n USGS. org - personal and home n FEMA 526 – personal preparedness n Call 800 480 2520 to order free FEMA documents n NERT– www. sfgov. org/sffdnert n ABAG – www. quake. abag. ca. gov

MEET THE DBI PROS n Display boards n Hilti and Simpson reps in lobby n DBI Information booth in lobby n Again, www. 72 hours. org website

MEET THE DBI PROS QUESTIONS ? Use the microphone n Please limit each question to a couple minutes maximum n

MEET THE DBI PROS Thank you for attending! n n n We value you and your opinion We want you to feel that we’re here to help assist you Our goal is to improve the value of our services to better serve you We’ve been listening to you telling us what’s important New improvements are on the horizon Please fill out evaluation forms. Thank you!

MEET THE DBI PROS