the next 6 slides are examples of roadbeds for each type of truss bridge
DESCRIPTION
THE NEXT 6 SLIDES ARE EXAMPLES OF ROADBEDS FOR EACH TYPE OF TRUSS BRIDGE. UNDERNEATH DECK TRUSS. THROUGH TRUSS. TRIANGULAR TRUSS. K TRUSS. WARREN TRUSS WITH VERTICAL SUPPORTS. BALTIMORE TRUSS. GET THE ROADBED WORKSHEET. DO NOT COVER THE HOLE IN THE TEST BLOCK!. - PowerPoint PPT PresentationTRANSCRIPT
THE NEXT 6 SLIDES ARE EXAMPLES OF ROADBEDS FOR EACH TYPE OF TRUSS BRIDGE
UNDERNEATH DECK TRUSS
THROUGH TRUSS
TRIANGULAR TRUSS
K TRUSS
WARREN TRUSS WITH VERTICAL SUPPORTS
BALTIMORE TRUSS
Student name: __________________________________ Block #_____ Date_________
Student name: _ ____________________________________________
TEST BLOCK
I nstructions: The two thick black lines represent the two trusses you built. The trusses will stand up vertically on those lines. Do not cover the hole in test block.
ROADBED WORKSHEET
Do not cover this hole
GET THE ROADBED WORKSHEET
DO NOT COVER THE HOLE IN THE TEST BLOCK!
TAPE THE ROADBED WORKSHEET TO THE FOAM BOARD AT THE 4 CORNERS.NO WAX PAPER IS NEEDED!
YOU WILL NEED A DIME SIZE DOT OF GLUE ON A PIECE OF SMALL SCRAP
PAPER.
STAND UP THE 2 TRUSSES ON THE 2 SOLID BLACK LINES AND TAPE THE TRUSS TO THE PAPER. PLACE THE TAPE ON THE OUTSIDE OF THE TRUSS. ROADBED PIECES WILL BE PLACE
WHERE THE TEST BLOCK IS LOCATED.NOTE: TRUSS NEEDS TO STAND VERTICALLY
THE 2 TRUSSES STANDING VERTICALLY IS IMPORTANT FOR THE TEST BLOCK TO FIT
THROUGH THE OPENING.
THE TOP OF THE TRUSS SHOULD MEASURE 2 ½ INCHES
TEST BLOCK MUST FIT BETWEEN THE 2 TRUSSES
PLACE THE ROADBED BALSA WOOD PIECES WHERE THE TEST BLOCK IS LOCATED. DON’T ADD MANY PIECES TOWARDS THE END OF THE TRUSSES WHERE THE TEST BLOCK IS NOT LOCATED.
IMPORTANT - LAY BALSA WOOD ON TOP OF BOTH TRUSSES.CAUTION: NOT IN BETWEEN THE 2 TRUSSES
CUT THE BALSA WOOD USING THE BALSA CUTTER & GLUE THE PIECE IN PLACE.
USE THE REMAINING BALSA WOOD TO FORM A ROADBED.
NOTICE - THE ROADBED PIECES ARE LOCATED OVER THE TEST BLOCK. DO NOT COVER THE HOLE ON THE TEST BLOCK.
YOU MAY LAY PIECES ON TOP OF EACH OTHER (2 PIECES MAX.)
YOU MAY USE DIAGONALS
EXAMPLE OF THE TEST BLOCK RESTING ON THE ROADBED
SIDE VIEW OF TEST BLOCK RESTING ON THE ROAD BED
STORING YOUR BRIDGEGIVE IT TO YOUR INSTRUCTOR
DO NOT REMOVE YOUR BRIDGE FROM THE FOAM BOARD UNTIL THE NEXT CLASS. GLUE MUST DRY.