Thursday, May 7, 2009
roof erection part 2
Hi now that you have all your trusses and material that gets supplied with your roofing layout. You are ready to get started.
I hope THAT YOU HAVE HAD SOMEBODY GO UP ON THE WALL AND CLEAN MOST OF THE MORTAR OFF THE TOP OF THE BRICKS. AND SOMEONE WOULD HAVE TO GO AND NAIL DOWN THE WALL PLATE ALL ROUND THE PERIMETER OF THE HOUSE.
IT WOULD BE A GOOD IDEA TO HAVE A NOTE BOOK WHERE YOU CAN WRITE DOWN YOUR MEASUREMENTS IN.
NOW MEASURE THE HOUSE DOWN THE LENGHT OF IT ON THE INSIDE WALL. GET THE TOTAL LENGTH AND DIVIDE THIS MEASUREMENT BY 2. MAKE A MARK ON THE BRICKS WITH A CARPENTES PENCIL JUST BELOW THE WALL PLATE.BE SURE TO MEASURE THE OTHER LONGEST WALL NOW AS WELL AND DIVIDE THIS MEASUREMENT BY 2. ALSO MAKE A MARK UNDER THE WALL PLATE ON THE BRICK. REMEMBER THIS RULE OF THUMB IF YOU MEASURE THE WALL FROM EAST TO WEST, THEN THIS SAME WAY OF MEASURING WOULD APPLY TO THE OTHER WALL.
THE REASON FOR THIS IS THAT BUILDERS ARE ONLY HUMAN AND IF YOURHOUSE IS OUT OF SQUARE THEN YOU AT LEAST HAVE A STARTING POINT WHICH IS FAIRLY ACCURATE.
RIGHT NOW YOU HAVE YOUR HOUSE HALVED BY MEASUREMENT.
COUNT YOUR MAIN TRUSSES THE BIGGEST ONES, DIVIDE THESE BY 2 AS WLL.THEN DEPENDING ON THE TYPE OF ROOF YOU HAVE IE TILE OR CHROMADECK.THIS STYLE WOULD DETERMINE YOUR TRUSS SPACING. TILE ROOF TRUSSES ARE NORMALLY MAXIMUM 750MM CENTRES
AND CROMADECK TRUSSES ARE NORMALLY MAXIMUM 1150MM CENTRES APART. BUT THIS MEASUREMENT IS NORMALLY ACCORDING TO THE ROOFING ENGINEERS SPECIFICATIONS. IF THIS MEASUREMENT IS NOT ON PLAN ASK THE ENGINEER TO FURNISH THIS INFORMATION.
NOW I AM GOING TO USE TILE TRUSS SPACING AS AN EXAMPLE ONLY BUT THIS WOULD APPLY TO THE OTHER STYLE TRUSSES AS WELL
GO BACK TO THE MEASUREMENT ON YOUR WALL AND DIVIDE THE 750MM MEASUREMENT BY 2 THAT IS 375MM MEASURE FROM YOUR MARK ON THE WALL 375MM AND MARK THE WALL CLEARLY SO YOU CAN SEE IT WHEN YOU STAND ON THE FLOOR DO THE SAME MEASUREMENT ON THE OTHER SIDE OF THE MARK. MARK OUT 750MM FROM THAT MARK UNTIL ALL TRUSSES ARE ACCOUNTED FOR.
REMEMBER WHATEVER YOU DO ONE THE ONE SIDE OF YOUR HOUSE YOU REPEAT THE PROCEDURE ON THE OTHER SIDE.(DO EXACTLY THE SAME)
NOW YOU HAVE MARKED WHERE THE TRUSSES WOULD STAND MORE OR LESS YOU MIGHT HAVE TO MAKE SLIGHT ADJUSTMENTS TO YOUR MEASUREMENTS DEPENDING ON THE HOUSE BEING SQUARE.
NOW YOU NEED TO MEASURE THE SHORT WALLS OF THE HOUSE,DIVIDE THIS MEASUREMENT BY 2 AS WELL. THIS MEASUREMENT WILL BE THE MEASUREMENT YOU USE TO PLACE YOUR TRUSSES ACCURATELY.
NOW GO TO YOUR BIGEST TRUSSES AND MEASURE THEM ONE BY ONE.
IF YOU LOOK AT THE TRUSS , WHERE THE TOP AND BOTTOM OF THE TRUSS INERSECT THINK OF A RIGHT ANGLE TRIANGLE. JUST MEASURE THE BASE OF THE TRUSS AND GET YOUR CENTRE NOW MARK THE MEASUREMENT THAT YOU DIVIDED FROM YOUR SHORT WALL ON THE TRUSS FROM THE TRUSSES CENTRE TO THE OUT SIDE. FROM THE CENTRE OF THE TRUSS MARK THE OTHER SIDE TO THE OUTSIDE AS WELL. REPEAT THIS PROCEDURE WITH ALL THE BIG TRUSSES UNTIL ALL OF THEM HAVE BEEN MARKED.
PART THREE WILL FOLLOW IN DUE COURSE IF YOU NEED MORE LEAVE ME A POST
HAPPY ROOFING
http://carpentryoil.blogspot.com
I hope THAT YOU HAVE HAD SOMEBODY GO UP ON THE WALL AND CLEAN MOST OF THE MORTAR OFF THE TOP OF THE BRICKS. AND SOMEONE WOULD HAVE TO GO AND NAIL DOWN THE WALL PLATE ALL ROUND THE PERIMETER OF THE HOUSE.
IT WOULD BE A GOOD IDEA TO HAVE A NOTE BOOK WHERE YOU CAN WRITE DOWN YOUR MEASUREMENTS IN.
NOW MEASURE THE HOUSE DOWN THE LENGHT OF IT ON THE INSIDE WALL. GET THE TOTAL LENGTH AND DIVIDE THIS MEASUREMENT BY 2. MAKE A MARK ON THE BRICKS WITH A CARPENTES PENCIL JUST BELOW THE WALL PLATE.BE SURE TO MEASURE THE OTHER LONGEST WALL NOW AS WELL AND DIVIDE THIS MEASUREMENT BY 2. ALSO MAKE A MARK UNDER THE WALL PLATE ON THE BRICK. REMEMBER THIS RULE OF THUMB IF YOU MEASURE THE WALL FROM EAST TO WEST, THEN THIS SAME WAY OF MEASURING WOULD APPLY TO THE OTHER WALL.
THE REASON FOR THIS IS THAT BUILDERS ARE ONLY HUMAN AND IF YOURHOUSE IS OUT OF SQUARE THEN YOU AT LEAST HAVE A STARTING POINT WHICH IS FAIRLY ACCURATE.
RIGHT NOW YOU HAVE YOUR HOUSE HALVED BY MEASUREMENT.
COUNT YOUR MAIN TRUSSES THE BIGGEST ONES, DIVIDE THESE BY 2 AS WLL.THEN DEPENDING ON THE TYPE OF ROOF YOU HAVE IE TILE OR CHROMADECK.THIS STYLE WOULD DETERMINE YOUR TRUSS SPACING. TILE ROOF TRUSSES ARE NORMALLY MAXIMUM 750MM CENTRES
AND CROMADECK TRUSSES ARE NORMALLY MAXIMUM 1150MM CENTRES APART. BUT THIS MEASUREMENT IS NORMALLY ACCORDING TO THE ROOFING ENGINEERS SPECIFICATIONS. IF THIS MEASUREMENT IS NOT ON PLAN ASK THE ENGINEER TO FURNISH THIS INFORMATION.
NOW I AM GOING TO USE TILE TRUSS SPACING AS AN EXAMPLE ONLY BUT THIS WOULD APPLY TO THE OTHER STYLE TRUSSES AS WELL
GO BACK TO THE MEASUREMENT ON YOUR WALL AND DIVIDE THE 750MM MEASUREMENT BY 2 THAT IS 375MM MEASURE FROM YOUR MARK ON THE WALL 375MM AND MARK THE WALL CLEARLY SO YOU CAN SEE IT WHEN YOU STAND ON THE FLOOR DO THE SAME MEASUREMENT ON THE OTHER SIDE OF THE MARK. MARK OUT 750MM FROM THAT MARK UNTIL ALL TRUSSES ARE ACCOUNTED FOR.
REMEMBER WHATEVER YOU DO ONE THE ONE SIDE OF YOUR HOUSE YOU REPEAT THE PROCEDURE ON THE OTHER SIDE.(DO EXACTLY THE SAME)
NOW YOU HAVE MARKED WHERE THE TRUSSES WOULD STAND MORE OR LESS YOU MIGHT HAVE TO MAKE SLIGHT ADJUSTMENTS TO YOUR MEASUREMENTS DEPENDING ON THE HOUSE BEING SQUARE.
NOW YOU NEED TO MEASURE THE SHORT WALLS OF THE HOUSE,DIVIDE THIS MEASUREMENT BY 2 AS WELL. THIS MEASUREMENT WILL BE THE MEASUREMENT YOU USE TO PLACE YOUR TRUSSES ACCURATELY.
NOW GO TO YOUR BIGEST TRUSSES AND MEASURE THEM ONE BY ONE.
IF YOU LOOK AT THE TRUSS , WHERE THE TOP AND BOTTOM OF THE TRUSS INERSECT THINK OF A RIGHT ANGLE TRIANGLE. JUST MEASURE THE BASE OF THE TRUSS AND GET YOUR CENTRE NOW MARK THE MEASUREMENT THAT YOU DIVIDED FROM YOUR SHORT WALL ON THE TRUSS FROM THE TRUSSES CENTRE TO THE OUT SIDE. FROM THE CENTRE OF THE TRUSS MARK THE OTHER SIDE TO THE OUTSIDE AS WELL. REPEAT THIS PROCEDURE WITH ALL THE BIG TRUSSES UNTIL ALL OF THEM HAVE BEEN MARKED.
PART THREE WILL FOLLOW IN DUE COURSE IF YOU NEED MORE LEAVE ME A POST
HAPPY ROOFING
http://carpentryoil.blogspot.com
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