referring to the drawings wherein like reference numerals designate corresponding parts throughout the several figures , and initially referring to fig1 the slab pattern tool 10 of the present invention comprises a drill pattern 11 that has a series of drilling holes 12 that form a guide for the drilling of a concrete slab . the drill pattern 11 is used for drilling concrete for subterranean termite treatments in concrete slabs that are contiguous to the walls of a building . the drilling holes 12 are preferably three - quarter inch ( 3 / 4 &# 34 ;) in diameter and centered at a point three and five - eighths ( 35 / 8 &# 34 ;) from the wall side 13 of the slab pattern . the adjustment footings 14 attach to a top surface 15 of the drill pattern 11 , and create an offset from the wall that the concrete slab joins . the adjustment footings 14 have a set of holes 16 that allow for adjustment from a position approximately five inches ( 5 &# 34 ;) from the wall to a position approximately twelve inches ( 12 &# 34 ;) from the wall . the adjustment footing 14 is attached to the drill pattern 11 by means of three - eighths inch ( 3 / 8 &# 34 ;) bolts 17 that go through the set of holes 16 in the adjustment footing 14 and through a set of corresponding holes 18 in the slab pattern 11 . to change the distance of the slab pattern 11 from the wall , the bolts 17 are placed in a different set of the holes 16 . the different holes on the adjustment footing are marked with distances ranging from five ( 5 ) to twelve ( 12 ) inches from the wall . the adjustment footings are attached to the slab pattern 11 by the bolts 17 and a set of wing nuts 19 that allow for easy adjustment of the footings 14 in the field . the footing of the foundation of the house usually protrudes no more than four inches ( 4 &# 34 ;) from the wall of the building . the drilling for the application of termiticide should be done at a point just beyond the footing . the adjustment footing 14 provides a fine adjustment in one inch increments from a distance of four and five - eighths inches ( 45 / 8 &# 34 ;) to eleven and five - eighths inches ( 115 / 8 &# 34 ;) measured from the wall to the center of the drilling holes 12 . this fine adjustment allows the service technician to move the slab pattern tool 10 away from the wall , if an initial drilling hits the footing of the foundation . the distance of five to twelve inches from the wall includes the width of a support leg 27 that is at the front of the adjustment footing 14 and makes contact with the wall . the support leg is preferably one ( 1 &# 34 ;) inch wide . accordingly , at the first set of holes 16 in the adjustment footing 14 , the distance from the wall to the center of the drilling hole 12 is equal to three and five - eighths inches from the center of the drilling hole to the wall side 13 of the drill pattern 11 plus one inch for the support leg 27 . the drilling holes 12 are open at one end to a drill bit removal slot 20 that goes all the way to the slotted side 21 of the drill pattern 11 . referring to fig2 a starting hole 22 is positioned on the left side of the slab pattern tool 10 . the other drilling holes 12 are color coded and spaced from twelve to eighteen inches from the starting hole 22 . a series of red labels 23 indicate a drilling hole pattern based on twelve inch centers . a series of blue labels 24 indicate a drilling hole pattern based on fourteen inch centers . purple labels 25 indicate a drilling hole pattern based on sixteen inch centers , and yellow labels 26 indicate a drilling hole pattern based on eighteen inch centers . once the starting hole has been drilled , a set stob or metal rod approximately one - hag inch diameter by three feet long should be placed in the hole through the slab pattern tool 10 to hold the tool in place while drilling the rest of the holes 12 . in fig3 the slotted side 21 of the drill pattern 11 is shown with the drill bit removal slots 20 leading to each drilling hole 12 . the drill bit removal slots 20 allow for some of the concrete dust generated from drilling to move away from the drilling hole . also , if the drill bit breaks or becomes lodged in the concrete by hitting rock or rebar , the drill bit removal slots 20 allow the slab pattern tool 10 to be removed from around the drill . the slab pattern tool 10 should be removed by lifting the tool from the wall side 13 of the drill pattern 11 up and away from the drill . fig4 shows the adjustment footing 14 in an extended position . the support leg 27 is positioned against the wall when the slab pattern tool 10 is being used . various modifications may be made of the invention without departing from the scope thereof and it is desired , therefore , that only such limitations shall be placed thereon as are imposed by the prior art and which are set forth in the appended claims .
a slab pattern tool for termite treatment drilling in which the tool comprises a drill pattern with a series of color coordinated drilling holes wherein the colors represent different spacing patterns , and a set of adjustment footings which abut the wall of the building being treated and allow for adjustment away from the foundation footing at the wall .