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Home > Bob on TV > Home Again > LifeSpan House > Working on the First Floor > 1102 Transcript
1102 - Working on the First Floor
September 11-17, 2000 | March 12-18, 2001
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HI, I'M BOB VILA. WELCOME HOME AGAIN
TO THE NEIGHBORHOOD OF I'ON, RIGHT OUTSIDE CHARLESTON, SOUTH CAROLINA.
TODAY'S OUR SECOND VISIT HERE. THE FIRST FLOOR DECK IS ALMOST COMPLETED.
WE'RE STILL PUTTING DOWN SOME PLYWOOD.
WE'RE ALSO GONNA BE PUTTING DOWN SOME PERIMETER WALLS AND FIRST FLOOR
PARTITIONS.
AND WE'VE GOT A VISIT FROM BRYAN READLING, WHO'S WITH THE A.P.A.
HE'S GOING TO BE DEMONSTRATING SOME OF THE NEW TECHNOLOGY
THAT FIGHTS HURRICANE DAMAGE FROM HIGH WINDS.
STICK AROUND. IT'S GOOD TO HAVE YOU HOME AGAIN.
CAPTIONING MADE POSSIBLE BY SEARS
THE HOMES BEING BUILT HERE IN THE NEW NEIGHBORHOOD OF I'ON
ARE INSPIRED BY THE TRADITIONAL TOWNS OF THE 19th CENTURY.
THE TRADITIONAL DESIGNS ARE COMBINED WITH MODERN TECHNOLOGY.
THESE PLANS FOR THE HOUSE WE'RE BUILDING
INCLUDE THIS LARGE COLUMNED PORCH ON 2 SIDES OF THE HOUSE.
IF YOU REMEMBER, LAST WEEK WE GOT THE FOUNDATION FINISHED.
WE USED ENGINEERED WOOD FOR THE GIRT AND I-JOISTS.
NOW LET'S GET TOGETHER WITH BOB RYLEY AND OUR GENERAL CONTRACTOR, KEVIN KALMAN,
AND GET TO WORK ON THE FIRST FLOOR DECK.
OK, WELL RYLEY IS PUTTING DOWN ADHESIVE ON THE TOPS OF THE I-JOISTS.
WHAT WE'RE WORKING ON RIGHT NOW IS WHAT WE CALL THE DECKING,
AND THAT DOESN'T REALLY REFER TO BUILDING AN OUTSIDE DECK.
IT REFERS TO PUTTING SUB- FLOORING DOWN OVER THE JOIST.
THE SUB-FLOORING, OF COURSE, WILL RECEIVE EITHER CARPETING
OR VINYL FLOORS OR HARDWOOD FLOORS.
AND YOU CAN SEE THAT THIS IS A TONGUED AND GROOVED PLYWOOD.
IT'S SOUTHERN YELLOW PINE AND IT'S REALLY TAKEN OVER THE INDUSTRY,
BECAUSE IT USED TO BE, 20 YEARS AGO,
WE USED CDX FIR PLYWOOD, AND IT DELAMINATED A LITTLE BIT.
THIS IS STILL IN THE MID-$20 RANGE PER SHEET
AND IT STILL DOES A VERY GOOD JOB, IT HOLDS THE WATER.
WHY IS IT SO IMPORTANT, RYLEY,
TO PUT DOWN THE PANEL ADHESIVE UNIFORMLY
BEFORE YOU PUT DOWN A SHEET OF PLYWOOD?
WELL, IT'S REALLY GOING TO ADHERE THE PLYWOOD TO THE JOIST
AND IT'S GONNA TAKE ALL THAT BOUNCE OUT OF IT, STIFFEN UP THE FLOOR,
ELIMINATE ANY SQUEAKS YOU MIGHT HAVE IN THERE.
BUT YOU WANT TO NAIL IT OFF RIGHT AWAY 'CAUSE THIS STUFF SETS UP FAST.
YEAH, AND WHAT HAPPENS IS, WHEN YOU PUT DOWN THE SHEET OF PLYWOOD,
AND IT GOES ON TOP OF THE ADHESIVE,
YOU'RE KIND OF SQUISHING THE ADHESIVE
AND ALMOST CREATING A KIND OF GASKETING EFFECT ON THE WHOLE THING.
LET ME GET THIS DOWN HERE.
HOW'S THAT? GOOD.
AND ONE MORE UP OVER HERE, BOB.
GOOD. ALL RIGHT.
AND THEN KEVIN JUST NAILS IT OFF.
AND WHAT KIND OF NAILS ARE YOU USING?
WE'RE USING RING-SHANK 8D NAILS.
NOW, ARE THOSE THE NAILS THAT HAVE ADHESIVE ON THEM?
NO, THESE ARE PASLODE NAILS,
THEY'RE A GUN NAIL, THEY'RE AN 8-PENNY.
WE'RE GONNA NAIL THIS OFF ON EVERY JOIST.
GET A NAIL, THEN WE'RE GONNA NAIL IT OFF A MINIMUM OF 12 INCHES ON CENTER.
WE TEND TO OVERNAIL. WE GO FOR 6 TO 8 INCHES ON CENTER.
BUT THAT'S ELIMINATING THE POSSIBILITY OF SQUEAKS,
WHICH I'M TOLD IS LIKE THE NUMBER ONE CALLBACK
FOR A CONTRACTOR'S LIFE.
SQUEAKS, LEAKS, AND DRYWALL POPS ARE THE NIGHTMARE.
SQUEAKS, LEAKS, AND POPS. RIGHT.
THEY'RE A NIGHTMARE.
OK, NOW ANY TIME WE ARE LAYING OUT THE PLYWOOD DECK--
IS THAT WHERE YOU WANT IT, KEVIN? YES, SIR.
YOU'LL HAVE SOME OVERHANGING PLYWOOD LIKE YOU HAVE HERE.
NOW, KEVIN, WHEN YOU'RE LAYING OUT AND PUTTING THE PLYWOOD DOWN
SOMETIMES IT MAKES SENSE TO OVERHANG WHATEVER IT IS
FOR REASONS OF LAYOUT. CAN YOU EXPLAIN THAT?
WE WANT THE STACKS OF OUR JOINTS OF OUR PLYWOOD, BOB, 4 FOOT ON CENTER
SO WE LAY A FULL 8-FOOT SHEET.
THE NEXT SHEET THAT COMES ON,
WE'RE GONNA LAY THAT 4 FEET FROM WHERE THE FIRST SHEET STARTED.
AND IN A SITUATION LIKE THIS,
BY STARTING OUT WITH A 4-FOOT PIECE HERE,
OUR 8-FOOT PIECE ACTUALLY HUNG OUT OVER THE END OF THE DECK.
IT'S A LOT EASIER TO STRIKE A LINE,
GO AROUND THE PERIMETER OF THE BUILDING
AND JUST SAW OFF THE EXCESS PIECE
THAN TO CALL THOSE MEASUREMENTS OUT TO THE CUT GUY IN THE FIELD.
EXACTLY, AND THAT'S WHERE YOU GET A LITTLE WASTE
BUT IT MAKES THE JOB GO MORE QUICKLY.
AND THEN WE'VE GOT ANOTHER ONE TO CUT OVER HERE.
AND WE CALL IT A LITTLE WASTE
BUT SOMEBODY WILL MAKE A DOGHOUSE OUT OF IT.
AT THIS POINT, WE REALLY HAVE ALMOST 2/3 OF THE DECKING COMPLETE.
WHEN WE COME BACK WE'LL BE RAISING THE FIRST FLOOR WALLS.
STICK AROUND.
OK, WELL THE FIRST OF THE OUTSIDE WALLS IS GETTING READY TO GO UP.
AND THE ONE THING YOU WANT TO NOTICE RIGHT AWAY IS
WE'RE USING 2 X 6 STUDS FOR THE EXTERIOR WALLS,
WHICH WILL GIVE US THE OPPORTUNITY
TO PUT IN FIBERGLASS FOR AN R30 FACTOR.
IT'S NOT THAT BIG A DEAL IN SOUTHERN HOT CLIMATES
BUT IT'S A REAL PAYBACK WHERE YOU HAVE REAL COLD WEATHER
AND YOU WANT TO KEEP THE COLD WEATHER OUT.
ALSO, IT'S AN ADVANTAGE FROM THE POINT OF VIEW OF FINISHING OFF INSIDE THE
HOUSE,
WHEN YOU PUT THE WINDOWS IN A 2 X 6 PARTI--
UH, OUTSIDE WALL, YOU'VE GOT THAT EXTRA DEPTH FOR BLINDS OR WHATEVER.
NOW RYLEY, LET'S TALK ABOUT THE LAYOUT,
BECAUSE WHAT WE'VE GOT HERE ARE THE PRESSURE TREATED SHOE AND TOP PLATE,
WHICH ARE ALWAYS PUT TOGETHER AT THE ASSEMBLY STAGE
SO THAT WHEN YOU DO THE LAYOUT,
YOU CAN DO THE LAYOUT OF YOUR LOCATIONS ON BOTH AT THE SAME TIME.
AT THE SAME TIME, EXACTLY, BUT BEFORE YOU START LAYING IT OUT
THE FIRST THING THEY'RE GONNA DO IS TO CUT THESE PLATES TO LENGTH.
SO ON THIS LAST STUD HERE
THEY'RE GONNA END UP ON A 16-INCH CENTER.
EXACTLY. SO THAT YOU SPLIT THE STUD.
SO YOU DON'T HAVE THE TOP AND BOTTOM PLATES KIND OF WOBBLING IN THERE,
NOT FASTENED TO A VERTICAL MEMBER.
RIGHT, AND TO HELP US ALONG THIS TAPE HAS GOT EVERY 16--
WHEREVER THE 16 INCHES IS--
IS COLORED IN RED.
RIGHT.
SO IT STANDS OUT FOR YA. EXACTLY.
SO NOW LET'S MEET BRYAN READLING
FROM THE A.P.A.-- THE ENGINEERED WOOD ASSOCIATION.
HEY, BRYAN. HI, BOB.
HOW ARE YA? GOOD.
NOW ONE OF THE OBJECTIVES IN BUILDING THIS DREAM HOUSE
TO MAKE IT AS STRONG AS IT POSSIBLY CAN BE
TO WITHSTAND HURRICANES, EARTHQUAKES, AND THE LIKE.
AND LET'S TALK A LITTLE BIT ABOUT SOME OF THE MATERIALS THAT WE'RE USING HERE.
THIS IS A LAMINATED VENEER LUMBER HEADER THAT WE'RE USING.
IT'S SUPERIOR TO A DIMENSION LUMBER HEADER.
IT'S MADE SIMILAR TO PLYWOOD
IN THAT THE VENEER IS PEELED AND USED TO PRODUCE THE BEAM,
BUT IN THIS CASE THE VENEER IS NOT CROSS-ORIENTED AS YOU HAVE WITH PLYWOOD.
IT'S ALL GOING IN THE SAME DIRECTION.
RIGHT, SO ALL THE VENEER IS WORKING FOR YOU.
AND I DON'T KNOW IF YOU CAN SEE IT WELL IN AN EXTREME CLOSE-UP HERE,
BUT THERE MUST BE 20 LAYERS OF IT THERE.
SO THAT IS WHAT MAKES THIS A LOT STRONGER THAN A REGULAR 2 X 8.
BY USING INDIVIDUAL PIECES OF VENEER
YOU ELIMINATE A LOT OF THE STRENGTH-REDUCING CHARACTERISTICS OF WOOD,
SUCH AS KNOTS, SLOPE OF GRAIN THAT YOU WOULD HAVE IN A 2-BY MEMBER.
IT REALLY IS ENGINEERED.
WHAT OTHER PRODUCTS ARE WE USING
IN THE CONSTRUCTION OF THE HOUSE?
WE'RE GOING TO BE USING AN ORIENTED STRAND BOARD EXTERIOR WALL SHEATHING
TO CREATE OUR SHEAR WALL.
THIS IS A PRODUCT THAT'S MADE WITH THE SAME REAL ADHESIVE
THAT IS USED IN A LAMINATED VENEER LUMBER BEAM OR PLYWOOD.
AND WHAT KIND OF ADHESIVE IS IT?
IT'S NOT SOMETHING THAT PEOPLE NEED TO WORRY ABOUT
IN TERMS OF ALLERGIES, IS IT?
THE EMISSIONS OF FORMALDEHYDE FORM THIS PRODUCT
IS ALMOST IMMEASURABLE IN A LABORATORY SETTING.
VERY LOW.
SO IT'S PRACTICALLY NON-EXISTENT. RIGHT.
BUT I KNOW THAT A LOT OF BUILDERS, EVEN,
ARE CONCERNED THAT OSB, ORIENTED STRAND BOARD,
OR SOMETIMES THEY CALL IT BY THE MISNOMER, CHIPBOARD,
THAT IT CAN DELAMINATE,
ESPECIALLY IF YOU HAVE FLOODING SITUATIONS, A LOT OF WATER.
RIGHT. THIS PRODUCT IS MANUFACTURED
WITH THE FULL INTENTION THAT IT IS TO BE EXPOSED TO WEATHER.
THAT INCLUDES RAIN.
FOR A TEMPORARY PERIOD OF TIME,
UNDER NORMAL CONSTRUCTION DELAYS,
THIS PRODUCT WILL NOT LOSE STRENGTH AFTER IT'S EXPOSED TO RAINFALL.
BUT WHAT ABOUT IF IT'S IMMERSED IN WATER, IN A FLOODING SITUATION?
THAT SHOULDN'T BE A PROBLEM, EITHER.
THAT'S PART OF THE TESTING AT A.P.A.
IS TO FULLY IMPREGNATE THIS PRODUCT WITH WATER USING A VACUUM.
IT'S INJECTED, MORE OR LESS, INTO THE INTERIOR OF THE PANEL.
THEN WE TEST THE PANEL TO MAKE SURE IT HASN'T LOST STRENGTH.
YEAH, GREAT.
WELL, LET'S SEE HOW THEY'RE COMING ALONG WITH THE WALL HERE.
OK, BRUCE IS SLIDING IN WHAT YOU CALL THE JACK STUD.
THIS IS WHERE YOU'RE GONNA HAVE A WINDOW OPENING
AND SO YOU HAVE...
2 OF THE JACK STUDS ON EITHER SIDE OF THESE STUDS.
AND DOWN AT THE BOTTOM WE'LL HAVE WHAT THE CALL THE CRIPPLES,
WHICH ARE THESE SHORT CUTOFFS WHICH GO ON EITHER SIDE
AND ON 16-INCH CENTERS.
AND THEN AT THE TOP, I'LL BRING IN THE OTHER ONE
OF THESE EXTRA-HEAVY HEADERS...
WHICH ALSO GET NAILED TOGETHER.
ONCE THE WALL'S READY TO GO UP
THERE ARE 2 OR 3 THINGS THAT NEED TO BE DONE.
FIRST, ON THE OUTER PERIMETER, SOME BRACES,
SO THAT WHEN WE RAISE THE WALL IT DOESN'T FALL OVER THE SIDE.
SECONDLY, ON THE SIDES OF THE WALLS, SOME 2 X 4s
THAT WILL HELP RAISE IT AND HELP KEEP IT IN PLACE TEMPORARILY.
OK? ALL RIGHT, NOW WE'RE READY TO BRING IT UP.
1...2...3.
[GRUNTING]
OK, RUSSELL, ARE YOU GONNA DO THE PLUMBING?
[UNINTELLIGIBLE] YEP.
LET ME GET THE SLEDGE.
THERE.
Bob: IS THAT GOOD?
THAT'S GOOD!
BEAUTEOUS. YEP.
ONCE IT'S UP AND MADE PLUMB
WE ADD THESE ADDITIONAL TEMPORARY BRACES.
NEXT, WE'LL SEE AN EXPERIMENTAL HOUSE RETROFITTED
TO PREVENT DAMAGE FROM HURRICANES.
NEXT TIME ON...
WE'LL CONTINUE OUR PROJECT OUTSIDE CHARLESTON, SOUTH CAROLINA
IN THE NEW NEIGHBORHOOD OF I'ON.
WE'LL FINISH THE FIRST FLOOR DECK,
START RAISING SOME OF THE SIDE WALLS.
BRYAN READLING OF THE A.P.A. WILL TALK ABOUT CONSTRUCTION TECHNIQUES
TO PREVENT DAMAGE FROM HIGH WINDS.
WE'LL ALSO VISIT A DEMONSTRATION HOUSE IN DOWNTOWN CHARLESTON
TO LEARN ABOUT THE LATEST RESEARCH ON RETROFITTING HOUSES
TO PREVENT DAMAGE DURING HURRICANES AND FLOODS.
DON'T MISS IT. THAT'S NEXT TIME ON HOME AGAIN.
NEXT TIME ON...
WE'LL START RAISING THE WALLS
AND LEARN ABOUT PREVENTING DAMAGE DURING HURRICANES AND FLOODS.
DON'T MISS IT.
WE'RE IN FRONT OF 113 CALHOUN STREET HERE IN CHARLESTON,
A HOUSE THAT'S 125 YEARS OLD
AND WHICH WAS HEAVILY DAMAGED A DECADE AGO
WHEN HURRICANE HUGO SWEPT OVER CHARLESTON.
NOW IN THE LAST 5 YEARS THE HOUSE HAS BEEN RECONSTRUCTED
AND RECONFIGURED AND REALLY REBUILT AS A DEMONSTRATION HOUSE,
TO LET PEOPLE AND BUILDERS UNDERSTAND BETTER WAYS OF MITIGATING
THE EFFECTS OF FLOOD AND HIGH WINDS AND EVEN EARTHQUAKES
IN THIS PART OF THE COUNTRY.
BETH JUDGE IS AN ASSOCIATE AT CLEMSON UNIVERSITY
WHO'S AN EXPERT IN ALL THESE DIFFERENT AREAS
AND SHE'S GONNA HELP US UNDERSTAND SOME OF THE FEATURES OF THE HOUSE.
HI, BETH, HOW ARE YOU? HI, BOB.
TELL ME A LITTLE BIT ABOUT THE COLLABORATION HERE.
THERE'S A NUMBER OF DIFFERENT GROUPS INVOLVED IN CREATING THIS, RIGHT?
THAT'S RIGHT, BOB.
WE'VE GOT THE SOUTH CAROLINA SEA GRANT CONSORTIUM,
CLEMSON UNIVERSITY, THE CITY OF CHARLESTON,
WHO DONATED THE HOUSE,
CHARLESTON COUNTY,
THE EMERGENCY MANAGEMENT AGENCY HERE IN SOUTH CAROLINA,
AND WE'VE ALSO HAD SUBSTANTIAL FUNDING FROM F.E.M.A.
GREAT, SO IT'S A LONG-TERM EDUCATIONAL TOOL THAT YOU'VE CREATED HERE.
WHAT ARE SOME OF THE OBJECTIVES?
WELL, BOB, WE'RE HOPING THAT NOT ONLY CAN WE PROMOTE
THESE HAZARD RESISTANT BUILDING TECHNIQUES
TO BUILDERS, ARCHITECTS, ENGINEERS, HOMEOWNERS,
BUT WE'RE ALSO USING THE HOUSE AS A LAB.
WE'RE BRINGING IN SOME TECHNOLOGIES THAT AREN'T QUITE TESTED
AND WE'RE GONNA SEE HOW THEY PERFORM HERE IN DOWNTOWN CHARLESTON.
AND THE CONCEPT OF SUSTAINABILITY.
CAN YOU TELL ME A LITTLE BIT ABOUT THAT?
WELL, BOB, SUSTAINABILITY REALLY MEANS
THAT WE OF THIS GENERATION MEET OUR NEEDS
WHILE ENSURING THAT THOSE OF FUTURE GENERATIONS
CAN MEET THEIR NEEDS AS WELL.
SO THAT MEANS USING CERTAIN MATERIALS JUDICIOUSLY
AND BRINGING IN NEW MATERIALS.
LOOKING AT THE HOUSE, IT LOOKS LIKE SOMETHING OUT OF THE MID-19th CENTURY
WITH THOSE BEAUTIFUL DOUBLE PORCHES AND THE COLUMNS.
WHAT KIND OF CHANGES HAVE BEEN MADE HERE?
WELL, BOB, DOWN HERE WHAT WE'VE DONE
IS WE'VE ACTUALLY ELEVATED THE HOUSE
DURING THE CONSTRUCTION PROGRESS,
AND WE'VE REBUILT THE FOUNDATION.
HERE WE'VE GOT A SEISMIC ZONE
SO WE'VE GOT A POURED CONCRETE FOOTING
CONCRETE BLOCK, REINFORCED,
IT'S ALL BOLTED TOGETHER TO THE HOUSE SILL.
SO THE BRICK VENEER IS JUST HIDING A CONCRETE...
PIER THAT SUPPORTS THE HOUSE.
THAT'S EXACTLY RIGHT, AND THAT'S WHY YOU SEE
THIS SORT OF INTERESTING FEATURE RIGHT HERE.
WHAT ABOUT THE LEVEL OF THE HOUSE?
WELL, YOU KNOW, IT'S ABOUT A FOOT HIGHER THAN IT WAS ORIGINALLY.
ONE OF THE MASTERS DEGREE STUDENTS AT CLEMSON,
ONE OF THOSE ENGINEERS,
SHE DID A LOT OF RESEARCH AND SHE FOUND THAT...
BY JUST ELEVATING IT A MERE 7 INCHES
WE COULD ELIMINATE 60% OF THE FLOODING EVENTS
HERE IN DOWNTOWN CHARLESTON.
AND THAT, OF COURSE, IS THE SOURCE OF A LOT OF DAMAGE
AND A LOT OF BILLIONS OF DOLLARS, RIGHT?
ABSOLUTELY. THERE'S NO QUESTION ABOUT THAT.
WHAT ABOUT SOME OF THE MATERIALS WE'RE LOOKING AT HERE.
IS IT ALL WOOD?
WELL, MOST OF IT IS WOOD BECAUSE
OUR BOARD OF ARCHITECTURAL REVIEW
LIKES TO STICK TO THE ORIGINAL MATERIALS--
IN THE HISTORIC DISTRICT.
IN THE HISTORIC DISTRICT.
SO MOST OF IT IS A CYPRESS SIDING.
WE'VE ALSO GOT A HARDI-PLANK BACK HERE ON THE BACK PART OF THE HOUSE.
AND THAT'S CEMENTITIOUS MATERIAL THAT WE'RE USING ON THE BACK PART.
WE'VE ALSO GOT HERE, THESE ARE SORT OF A FIBERGLASS,
THEY'RE MADE TO LOOK LIKE WOOD.
THIS IS ACTUALLY REALLY WOOD.
AND HERE WE'RE, OF COURSE, TYING EVERYTHING TOGETHER,
YOU CAN SEE THIS RIGHT HERE.
SO THERE'S MANY AREAS OF THE HOUSE YOU'VE LEFT ITEMS EXPOSED
THAT SHOW US HOW EVERYTHING GETS TIED TOGETHER.
THAT'S EXACTLY RIGHT, BOB.
CAN WE LOOK INSIDE?
SURE.
BOB, HERE IN THE HOUSE WE'VE USED A BLOWN CELLULOSE INSULATION
THAT'S BASICALLY A RECYCLED NEWSPAPER.
BUT DOWN HERE WE'VE GOT A FLOOD ZONE,
SO WHAT WE'RE USING IS A RIGID FOAM INSULATION.
THAT CAN BE RE-USED.
THAT'S A VERY GOOD TIP, SO YOU DON'T HAVE TO TOTALLY REINSULATE THE ENTIRE HOUSE
IF YOU SHOULD HAVE SOME PARTIAL FLOODING.
THAT'S EXACTLY RIGHT.
WHAT ABOUT STRUCTURAL THINGS THAT YOU CAN DO
TO MAKE THE HOUSE STRONGER?
OVER HERE, BOB, WE'VE GOT A LOT OF DIFFERENT THINGS BEING USED.
WE'VE USED SOME METAL STRAPPING TO REINFORCE SOME OF THE OLD WOOD,
AND OCCASIONALLY WE'VE HAD TO SISTER THE OLDER FLOOR JOISTS WITH SOME NEWER
ONES.
WE'VE ALSO USED AN EPOXY THAT WILL STRENGTHEN THE OLD WOOD
WHERE THERE WERE ROTTING PROBLEMS.
SO THAT YOU CAN PRESERVE SOME OF THE ANTIQUE ELEMENTS OF THE HOUSE
AND STILL MAKE IT STRUCTURALLY VIABLE.
AND THE WINDOWS, THEY GET STRAPPED IN?
THE WINDOWS ARE ALSO STRAPPED IN, ALL THE WAY TO THE BUILDING'S FRAME.
NOW BETH, THIS IS ALL FINE AND GOOD IN NEW CONSTRUCTION
BUT WHAT DO YOU DO IF YOU'RE RETROFITTING?
YOU KNOW, BOB, THERE ARE SOME RETROFIT PRODUCTS
AND THIS PARTICULAR ONE WE'RE DEMONSTRATING HERE HAS BEEN--
WAS INVENTED UP IN CLEMSON BY A GRADUATE STUDENT AND HIS PROFESSOR.
THEY'RE CALLING IT THE HIGH WIND RETROFIT BRACKET.
HOW DOES IT WORK?
WELL, WHAT YOU DO IS--
OH, YOU'VE GOT IT UP THERE.
YOU PUT IT OVER YOUR SHEETROCK,
AND ACTUALLY LAG SCREW IT INTO THE UPPER STORY FLOOR JOISTS
AND YOUR WALL STUDS HERE.
THEN YOU CAN JUST TAKE SOME CROWN MOLDING AND DRESS IT UP.
THAT'S EXACTLY RIGHT.
SO THAT'S A GOOD WAY OF DOING IT.
WELL, THANKS, BETH. THIS IS ALL VERY EDIFYING.
THANK YOU.
MORE IS AVAILABLE ON CONSTRUCTING
AND RETROFITTING HOMES TO WITHSTAND HURRICANES AT...
ALL RIGHT, THE NEXT STEP IS PUTTING UP THE SHEATHING
AND ONE TIP IS TO GET A CHALK LINE
AND PUT UP A GUIDE FOR YOUR FIRST COURSE
AND PUT UP THESE NAILS INTO THE STUDS UP THERE
SO THAT YOU DON'T GO OFF THE LINE.
THAT IS ONE QUICK WAY TO MAKE SURE THEY ARE ALL GOING IN PLACE,
UH, UNIFORMLY ACROSS.
YOU GET ONE COURSE DOWN THEN YOU GO UP TO THE NEXT ONE.
BRYAN READLING IS WITH US.
BRYAN, LET'S TALK A LITTLE BIT ABOUT THE FUNCTION OF THE SHEATHING.
I MEAN, UP TILL 10 YEARS AGO WE ALWAYS PUT PLYWOOD SHEATHING,
NOW IT'S ORIENTED STRAND BOARD,
BUT THE WHOLE SHEATHING REALLY PERFORMS A STRUCTURAL FUNCTION
THAT'S VERY IMPORTANT.
THAT'S RIGHT, BOB. WHAT WE HAVE BEFORE WE INSTALL THE SHEATHING
IS A SET OF INDEPENDENT STUDS WHICH ARE ABLE TO RACK...
WITH THE WINDLOAD AS THE HURRICANE COMES ON SHORE.
BY ATTACHING THE STRUCTURAL WOOD PANELED SHEATHING
LIKE WE HAVE HERE, THE O.S.B.,
WE MAKE THE WALL MORE OF A SINGLE UNIT,
OR A BUILDING BLOCK.
THIS WALL CAN NO LONGER DEFORM.
IT STAYS RECTANGULAR, AND THAT HELPS
TO CARRY THOSE WINDLOADS INTO THE FOUNDATION.
I LIKE TO CALL IT THE SKIN OF THE HOUSE,
AND WHAT I UNDERSTAND ALSO IS THAT THIS IS,
IN EFFECT, A SHEAR WALL.
AND THE AMOUNT OF NAILING AROUND THE PERIMETER
HAS A ROLE IN ITS STRENGTH.
RIGHT. THE MINIMUM FASTENING SCHEDULE THAT WE RECOMMEND
IS 6 INCHES ON CENTER AROUND THE PERIMETER.
12 INCHES ON CENTER ALONG THE INTERMEDIATE STUDS.
BUT BY DOUBLING THE NUMBER OF FASTENERS AROUND THE PERIMETER
YOU ROUGHLY DOUBLE THE CAPACITY OF THE SHEAR WALL.
SO, IN A HURRICANE PRONE AREA,
IT DOES MAKE SENSE TO HAVE THE NAILING CLOSE TOGETHER.
RIGHT. 3 INCHES?
UP TO 3 INCHES ON CENTER WITH WITH 2-BYS,
YOU CAN GO UP TO 2 INCHES ON CENTER WITH A 3-INCH PIECE OF LUMBER.
IT'S IMPORTANT THAT THE NAILS GO INTO THE SILL PLATE.
AND NOW, LOOKING IN THIS DIRECTION,
WE'VE ALREADY GOT ONE COURSE DOWN
AND WE'VE GOT THE NAILS IN PLACE ALL ALONG UP HERE
SO THAT WHEN WE PUT THE NEXT COURSE UP,
THEY REST ON THE NAIL AND THE NAIL CREATES THE SPACER
WHICH IS REQUIRED IN BETWEEN EACH COURSE OF PLYWOOD
FOR EXPANSION AND CONTRACTION.
OK, BRYAN, THIS WILL GO UP. IT'S A GABLE END,
AND WHEN WE'RE PUTTING THE ROOF TOGETHER,
I WANT YOU TO COME BACK, OK?
THANKS A LOT.
AND THEN WE'RE JUST ABOUT OUT OF TIME.
COME HOME AGAIN NEXT TIME
WE'LL BE FINISHING PUTTING UP
THE PARTITIONS, THE OUTSIDE WALLS
AS WELL AS BUILDING THE ROOF.
TILL THEN, I'M BOB VILA.
IT'S GOOD TO HAVE YOU HOME AGAIN.
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