Installation Manual - Bigfoot Systems Footing Forms
Contents
1. SYSTEMS The Original Installation Manual Bigfoot Systems Inc 6750 Highway 3 Martin s Point TF 1 800 934 0393 www bigfootsystems com RR 2 Mahone Bay Nova Scotia PH 902 627 1600 EM info bigfootsystems com Canada BOJ 2E0 FX 902 627 1700 Bigfoot Systems Inc RR 2 Mahone Bay 6750 Hwy 3 Martins Point Nova Scotia Canada BOJ 2E0 BIGFOOT SYSTEMS FOOTING FORMS U S Pat No 29 063 625 U S Pat No 5 785 459 U S Des Pat No 393 474 U S Pat No 6 840 491 Canadian _ gt Construction Materials Centre Canadian Construction Materials Centre ICC Evaluation Services Inc CCMC 12839 R ESR 2148 INSTALLATION MANUAL 1 0INTRODUCTION The Bigfoot Systems Footing Forms come in four sizes Model BF20 Model BF24 Model BF28 and Model BF36 Each model accepts various diameter construction tubes as per Table 1 Figure 1 TABLE 1 Ring BF20 BF24 BF28 BF36 Ring Height BF20 BF24 BF28 BF36 Diameter in in in in in in in in in cm cm cm cm cm cm 5 5 7 9 5 13 97 19 05 24 13 18 00 18 75 18 75 23 0 39 37 47 63 47 63 58 42 17 00 17 625 17 625 20 5 43 18 44 77 44 77 52 07 6 02 8 02 10 02 15 29 20 37 25 45 35 56 16 00 16 5 16 5 18 0 40 64 41 91 41 91 45 72 0 PA 05 30 48 14 37 35 56 0739 ans 16 46 21 39 26 47 40 64 som 0920 uer 192. 9 53 mm holes on a 45 degree angle in the footing form as indicated by the markings on the flange area at each rib location to accept a minimum of 12 in 30 48 cm spikes Place the Bigfoot on undisturbed soil and drive spikes at a 45 degree angle inwards to prevent Bigfoot from rising when concrete is being poured If the soil 1s such that the spikes cannot resist the upward pressure caused by the concrete being poured into the footing form then alternative methods such as sandbags or backfill must be used to hold the footing form in place If the height of the construction tube exceeds 3 ft 0 91 m above ground the tube must then be braced in accordance with Section 3 0 Bracing in the Installation Manual See Drawing BFS 103 The total combined height of the Bigfoot Systems must not exceed 5 ft 1 52 m When ready to pour use another Bigfoot inverted on top of the construction tube to act as a funnel The Model BF36 is not recommended for above ground applications 1 2 1 3 BELOW GRADE APPLICATION MODELS BF20 BF24 AND BF28 DRAWING BFS 102 After determining which Model Bigfoot Systems Footing Form and construction tube size is required for your application excess rings above the ring diameter required must be removed with a utility knife hand snips or saw and discarded example if you are using a 10 in 25 40 cm medium construction tube with the Model BF24 remove excess plastic at top of medium 10 in 25 40 cm
3. m to a maximum of 5 ft 1 52 m from the bottom of the footing form as shown in Drawing BFS 102 Backfill should be consolidated with a manual plate tamper or a 2 x 4 on end Do not strike Bigfoot Systems Footing Forms with tamper Re check alignment of pier Do not over consolidate so as to distort the shell of the footing form The backfill is intended to hold the footing form place 5 0 PLACING CONCRETE Concrete shall have a minimum of 3000 psi 20 7 Mpa 30 day compressive strength and consist of not more than 3 4 19 05 mm aggregate Place concrete in 10 in 16 in 25 40 40 64 cm lifts and rod or probe concrete with 4 or 5 rebar 10 to 12 thrusts per lift Do not strike inside the top lip of the Bigfoot footing form when rodding the first lift of concrete rod in center area NOT around perimeter Finish pouring concrete in equal lifts and rod to the perimeter of the construction tube surface Place three to four 4 or 5 rebar in the construction tube extending approx 6 in 15 24 cm below the bottom ring of the footing form When placing rebar keep approximately 2 in 5 08 cm from the side of the construction tube Level concrete at the top of the construction tube screen off and place the anchor plate or anchor bolts as specified Re check alignment or piers and move to re align and re secure braces as necessary before concrete sets 6 0 STRIPPING OF FORMS Stripping of the plastic footing form is not
4. necessary with the Bigfoot Systems Footing Form Remove wooden braces cut and remove construction tube 4 in 10 16 cm below the finished grade If the footing p form should need to be removed use form oil inside the footing form before pouring concrete If removal of tube 15 necessary after concrete is poured this should then be done within 24 48 hours for best results 7 0 STRUCTURAL STEEL If structural steel 15 required it must be designed by a qualified professional engineer in accordance with the Building Codes 6 0 SPACING OF FOOTING Spacing of the footing forms is dependent on loads number of stories and joist span Footings should be spaced in accordance with Section 9 15 3 of the NBCC 1995 for Canada and the Universal Building Code 1997 and the Federal Building Code for the United States 9 0 LOADS FOR BIGFOOT SYSTEMS FOOTING FORMS Allowable loads for the various footing forms can be found at Table BFS 101 for Canadian applications and Table BFS 102 for American applications Bigfoot Systems Inc RR 2 Mahone Bay 6750 Hwy 3 Martins Point Nova Scotia CANADA 2 Toll Free 1 800 934 0393 Phone 1 902 627 1600 Fax 1 902 627 1700 E mail info bigfootsystems com Web site www bigfootsystems com May 10 2007 Revision 1 TABLE BFS T102 UNITED STATES Allowable Gravity Loads on BIGFOOT Systems Footing Forms Models 20 24 28 and BF36 Model 24
5. ring thereby discarding the 10 in 25 40 cm small and 8 in 20 30 cm small medium and large rings Attach the required length of construction tube to Bigfoot footing form with a minimum of four 3 4 in 1 in long 19 1 mm 2 54 cm wood screws If the construction tube frays inward when cut with a handsaw remove excess frayed tube material with a utility knife for ease of application Place the Bigfoot in the excavation on top of undisturbed soil or 4 6 in 10 16 15 24 cm of compacted crushed stone or gravel level and have inspected by a Building Inspector if necessary then backfill 1n accordance with section 4 0 Backfill for Below Grade Applications The Model BF36 footing form must be placed on level undisturbed soil or on 4 to 6 inches 102 to 152 mm of compacted crushed stone or gravel Align the Bigfoot and construction tube with batter board lines plum and brace as shown in Drawing BFS 103 When backfilling avoid dropping or placing heavy rocks or heavy wet clay on Bigfoot Systems footing form If the tube height above grade exceeds 3 ft 0 91 m the tube must then be braced in accordance with Section 3 0 Bracing in the Installation Manual See Drawing BFS 103 BELOW GRADE APPLICATION Model BF36 DRAWING BFS 102 See 71 2 and 3 Below Grade Application for the Models BF20 BF24 and BF28 Align batter board lines plum and brace as shown in Figure 2 Typical Bracing during construction Backfill ov
6. 05 24 13 29 21 45 72 38 10 39 05 39 05 39 37 a 3020 cozy __ 35 56 36 20 36 20 33 02 33 34 33 34 Thickness 239 239 239 47625 DI Outside Diameter D4 D5 8 02 10 02 12 02 20 37 25 45 30 53 8 42 10 42 12 42 21 39 26 47 31 55 D7 21 5 25 2 29 6 54 61 64 01 75 18 20 24 28 50 80 60 96 71 12 H1 H2 H3 H4 H5 H6 FIGURE 1 HI Overall Height 30 12 for BF20 24 28 35 em 14 for 6 Figure Bigfoot Systems Footing Forms 1 1 ABOVE GROUND APPLICATION DRAWING BFS 101 After determining which Model Bigfoot Systems Footing Form and construction tube size 15 required for your application excess rings above the ring diameter required MUST be removed with a utility knife hand snips or saw and discarded example if you are using a 10 in 25 40 cm medium construction tube with the Model BF24 remove excess plastic at top of medium 10 in 25 40 cm ring thereby discarding the 10 in 25 40 cm small and 8 in 20 30 cm small medium and large rings Attach the required length of construction tube to the Bigfoot with a minimum of four 3 4 in 1 in long 19 1 mm 25 4 mm 8 wood screws If the construction tube frays inward when cut with a handsaw remove the excess frayed tube material with a utility knife for ease of application to the Bigfoot footing form Drill 3 8
7. Allowable Model BF20 Allowable Allowable Soil Bearing Pressure Soil Description Model BF28 Allowable Model BF36 Allowable Clay Sandy Clay Silty 2000 4364 6283 8560 14134 50 Clay and Clayey Sit 62 82 Sand Silty Sand Clayey Sand Silty Gravel and Clayey Gravel Crystalline Bedrock 12 000 26184 574 56 116 5 Notes 2 3 4 5 7 8 Ihe allowable gravity loads shown meet or exceed the requirements of the Canadian National Building Code Section 9 4 4 1 Minimum concrete compressive strength shall be 3000 psi 20 7 MPa at 28 days Calculations are in accordance with CSA A23 3 M77 which is equivalent to ACI 318 95 Gravity loads include only dead loads weight of construction materials and service loads such as snow loads and rain loads Pier design and their ability to resist lateral and uplift loads is beyond the scope of this table Piers requiring design for earthquake loads shall be designed by a qualified Professional Engineer Maximum lift when pouring concrete is 16 40 6 cm Allowable loads shown are for use in the U S and are based on soil bearing pressure values provided by BOCA Canadian users should refer to table BFS T101 Canada Bigfoot Systems Footing Forms are not intended as a substitute foundation system for the full foundations commonly used under residential housing unless they have been designed to do so by a qualified
8. ET DATE 4 OCT 99 PS 1 of 1 CONSTRUCTION TUBE NOTES BELOW GRADE APPLICATION wae FINISH GRADE UNDISTURBED GROUND OR 4 6 COMPACTED GRAVEL 1 THE TOTAL COMBINED HEIGHT OF BIGFOOT SYSTEMS FOOTING FORM MUST NOT EXCEED THIRTEEN FEET 13 2 SCREW CONSTRUCTION TUBE TO FOOTING FORM WITH A MINIMUM OF FOUR 4 3 4 8 WOOD SCREWS 3 BIGFOOT SYSTEMS FOOTING FORMS MUST BE PLACED ON UNDISTURBED GROUND OR 4 6 COMPACTED GRAVEL 4 BACKFILL MUST BE PLACED UP TO A MINIMUM OF 2 TO A MAXIMUM OF 5 FROM THE BOTTOM OF THE FOOTING FORM THE BACKFILLIS INTENDED TO HOLD THE FOOTING FORM IN PLACE 5 BACKFILL SHOULD BE CONSOLIDATED WITH A MANUAL PLATE TAMPER OR 7 2 ON END DO NOT STRIKE BIGFOOT SYSTEMS FOOTING FORM DO NOT OVER CONSOLIDATE SO AS TO DISTORT THE SHELL OF THE FOOTING FORM 6 CHECK ALIGNMENT OF CONSTRUCTION TUBE AFTER BACKFILLING BIGFOOT SYSTEMS FOOTING FORM BELOW GRADE APPLICATION ES SIZE CAGE CODE NO REV A BFS 102 4 ee eee n EE SH V SCAB BOARDS X 4 BRACES X 4 SCAB BOARD CONSTRUCTION TUB SCREWS 1 SCREWS FOOTING FORM UNDISTURBED GROUND 4 6 COMPACTED CRUSHED GRAVEL NOT TO SCALE SCALE 4 8 BIGFOOT SYSTEMS FOOTING FORM BRACING CAGE CODE TDWG NO TREV BFS 103 e EET SH shown 1 OF 1
9. er the footing form to a minimum height of 2 feet 610mm from the bottom of the footing form and compacted with a mechanical compactor Continue backfill in 8 to 12 inch 203mm lifts to a maximum height of 5 feet Compaction must be carried out between each lift The concrete must be placed in lifts that are 10 to 16 inches 254 to 406 mm in height with the concrete being consolidated after each lift as per previous instructions 7 Height Restrictions The total combined height of Bigfoot Systems Footing Forms must not exceed 13 ft 3 96 m b The maximum tube height for the 6 in 15 24 cm construction tubes must not exceed 3 ft 0 91 m above grade c The maximum tube height for the 8 in 20 30 cm construction tubes must not exceed 4 ft 1 22 m above grade and braced d The maximum tube height for the 10 in 25 40 cm and 12 in 30 48 cm construction tubes must not exceed 8 ft 2 44 m above grade and must be braced The maximum tube height for the 121 30 48 cm 141n 35 56 cm 161n 40 64 cm and 181 45 72 construction tubes must not exceed 8 ft 396 24 cm above grade and must be braced f Backfill must not exceed 5 ft 1 52 m 8 When ready to pour use another Bigfoot footing form inverted on top of the construction tube to act as a funnel 2 0 CONSTRUCTION TUBE PIERS Construction tubes exceeding 8 ft 2 44 m in height above grade must be approved by a Professional Engineer and require ext
10. ernal vibration Place top of concrete grade line with piano wire to designed height of the piers from the batter boards With Above Ground Applications loosely place construction tube on the collar of the Bigfoot Systems Footing Form and mark the concrete level Remove the construction tube mark the concrete level with a wrap around template and saw off the excess construction tube squarely If the construction tube frays inward when cut with a handsaw remove excess frayed tube material with a utility knife for ease of application Lay construction tube on a level area and attach four 1 in 2 54 cm x 3 in 7 62 cm x 8 in 20 32 cm scab boards on the top of the construction tube on the outside at four quarter points with two or more screws from inside the construction tube walls See Drawing BFS 103 Place the construction tube on the Bigfoot Systems Footing Form collar and attach with a minimum of four 3 4 in to 1 in long 19 1 mm 2 54 cm wood screws Place and screw the four bracing boards to the top of the pier scab boards and to the four 2 x 4 anchor stakes See Drawing BFS 103 Level and plumb the pier check the top of concrete level mark adjust if necessary attach and secure the bracing boards RE CHECK Then fasten the Bigfoot to the ground as detailed in Section 1 1 Items 4 and 5 Above Ground Application Model BF36 is not recommended for above ground applications With Below Grade Applications pre attach
11. h is equivalent to ACI 318 95 Gravity loads include only dead loads weight of construction materials and service loads such as snow loads and rain loads Pier design and their ability to resist lateral and uplift loads is beyond the scope of this table Piers requiring design for earthquake loads shall be designed by a qualified Professional Engineer Maximum lift when pouring concrete is 16 40 6 cm Bigfoot Systems footing forms are not intended as a substitute foundation system for the full foundations commonly used under residential housing unless they have been designed to do so by a qualified professional engineer CONSTRUCTION TUBE SPIKE DETENTS UNDISTURBED GROUND NOTES ABOVE GROUND APPLICATION 1 TOTAL COMBINED HEIGHT OF BIGFOOT SYSTEMS FOOTING FORM MUST NOT EXCEED FIVE FEET 5 2 DRILL Y8 HOLE AT A 5 DEGREE ANGLE AT EACH DETENT MARK DRIVE A 12 SPIKE THROUGH 3 8 HOLE 45 DEGREE ANGLE INWARDS 4 TUBES MUST BE BRACED ONCE THE COMBINED HEIGHT EXCEEDS THREE FEET 3 ABOVE GROUND 5 SCAB BOARDS ARE FASTENED TO THE CONSTRUCTION TUBE WITH 1 1 47 WOOD SCREWS FROM THE INSIDE THE TUBE 6 BIGFOOT SYSTEMS FOOTING FORMS MUST BE PLACED ON UNDISTURBED GROUND 7 CHECK ALIGNMENT OF CONSTRUCTION TUBE BEFORE 5 MAX POURING CONCRETE 12 SPIKES 45 DEGREE ANGLE BIGFOOT SYSTEMS FOOTING FORM ABOVE GROUND APPLICATION CAGE DWG NO NN BFS 101 SCALE SHE
12. professional engineer COFESSIO TABLE BFS T101 CANADA Allowable Loads on BIGFOOT Systems Footing Forms Models BF 20 BF24 BF28 and BF36 re Soil Allowable Soil Model BF 20 Model BF24 Model BF28 Model BF36 Description Bearing Pressure Allowable Loads Allowable Loads Allowable Loads Allowable Loads psf kPa Ibs KN Ibs KN Ibs KN Loose Sandor 1044 50 50 00 2279 10 10 1 3280 8 14 6 4466 3 19 9 7391 32 85 Gravel Firm Clay 1566 75 75 00 3418 65 15 2 4921 2 21 9 6699 4 29 8 11085 49 27 Compact or 2089 00 100 00 4558 20 20 3 6561 6 29 2 8932 6 39 7 14782 65 70 Dense Silt i i ree 3133 50 150 00 6837 3 30 4 9842 3 43 8 13398 8 59 6 22174 98 55 Compact Sand or Gravel Stiff Clay 3133 50 150 00 6837 3 30 4 9842 3 43 8 13398 8 59 6 22174 98 55 EG 4178 00 200 00 9116 4 40 5 13123 1 58 4 17865 1 79 5 29565 131 40 Clayey Shale 6267 00 300 00 13674 6 60 8 19712 9 87 7 26797 7 119 2 44347 197 10 10455 00 500 00 22812 8 101 5 32839 2 146 1 44705 6 198 9 73912 328 50 Bedrock The allowable loads shown meet or exceed the requirements of the National Building Code Section 9 4 4 1 most common range of soils a Minimum concrete compressive strength shall be 3 000 psi 20 7 MPa at 28 days Calculations are in accordance with CSA A23 3 M77 whic
13. the construction tube to the Bigfoot Systems Footing Form with a minimum of four 3 4 in 1 in long 19 1 mm 2 54 cm wood screws and lower into the excavated 4 hole Level plumb and mark the concrete level on the construction tube Use a minimum of six 5 1n 1 in long 19 1mm 25 4mm wood screws evenly spaced around the diameter of the Bigfoot when using the Model BF36 Remove the Bigfoot from the hole and lay the construction tube on supports Mark the concrete level with a wrap around template and saw off the excess construction tube squarely If the construction tube frays inward when cut with a handsaw remove excess frayed tube material with a utility knife for ease of application Attach the four 1 in 2 53 cm x 3 in 7 62 cm x 8 20 32 cm scab boards on the top of the construction tube on the outside at four quarter points with two or more screws from inside the tube walls See drawing BFS 103 Carefully replace the assembled unit in the excavated hole check for level plumb top of concrete level mark and then backfill as detailed in Section 4 0 Backfill for Below Grade Applications 3 0BRACING DRAWING BFS 103 Brace the construction tube with four framing boards at the top and nail to stakes and scab boards Brace the top of construction tubes to each other with spreaders attached to the braces or the scab boards 4 0 BACKFILL FOR BELOW GRADE APPLICATIONS Place backfill a minimum of 2 ft 0 61
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