PRE‐EXISTING MINIMUM FLOOR REQUIREMENTS Existing concrete floors should be test drilled to verify minimum floor thickness and to confirm building drawings. A core sample should be obtained and tested to verify
Concrete Specifications
PRE-EXISTING MINIMUM FLOOR REQUIREMENTS TWO-POST MODELS GP-7 SERIES MODELS XPR-9 SERIES MODELS XPR-10 SERIES MODELS XPR-12 SERIES MODELS XPR-15 SERIES MODELS XPR-18 SERIES MODELS 4-POST LIFTS HD-7 SERIES MODELS HD-9 SERIES MODELS GP-9 SERIES MODELS PL-6K SERIES MODELS HDS-14 SERIES MODELS HDS-18 SERIES MODELS HDS-27 SERIES MODELS HDSO-14 SERIES MODELS HD-973P HDS35 SERIES MODELS HDS40 SERIES MODELS MIN. THICKNESS 4-1/4" 4-1/4" 4-1/4" 6 1/2" 8" 8" MIN. THICKNESS 4-1/4" 4-1/4" 4-1/4" 4-1/4" 4-1/4" 4-1/4" 4-1/4" 4-1/4" 6 1/2" 6 1/2" 6 1/2" MIN COMP. STRENGTH 3000 PSI / 28 Day Aging 3000 PSI / 28 Day Aging 3000 PSI / 28 Day Aging 3000 PSI / 28 Day Aging 3000 PSI / 28 Day Aging 3000 PSI / 28 Day Aging MIN COMP. STRENGTH 3000 PSI / 28 Day Aging 3000 PSI / 28 Day Aging 3000 PSI / 28 Day Aging 3000 PSI / 28 Day Aging 3000 PSI / 28 Day Aging 3000 PSI / 28 Day Aging 3000 PSI / 28 Day Aging 3000 PSI / 28 Day Aging 3000 PSI / 28 Day Aging 3000 PSI / 28 Day Aging 3000 PSI / 28 Day Aging REINFORCEMENT #6 Rebar #6 Rebar #6 Rebar #6 Rebar #6 Rebar #6 Rebar REINFORCEMENT ACI Temp Only* ACI Temp Only* ACI Temp Only* ACI Temp Only* ACI Temp Only* ACI Temp Only* ACI Temp Only* #6 Rebar ACI Temp Only* ACI Temp Only* ACI Temp Only* REBAR SPACING 12 In. 12 In. 12 In. 10 In. 10 In. 10 In. REBAR SPACING ACI Temp Only* ACI Temp Only* ACI Temp Only* ACI Temp Only* ACI Temp Only* ACI Temp Only* ACI Temp Only* 12 In. ACI Temp Only* ACI Temp Only* ACI Temp Only* *The floor must be properly aged to American Concrete Institute specifications. The floor does not require reinforcement, but a minimum of wire mesh is recommended. Existing concrete floors should be test drilled to verify minimum floor thickness and to confirm building drawings. A core sample should be obtained and tested to verify minimum floor compressive strength. When investigating floor properties, consult building drawings to verify proper floor reinforcement. All 2-post lifts require a continuous single slab. Spanning expansion seams or positioning posts on separate slabs is not acceptable. DO NOT install any BendPak lift on any surface other than concrete, conforming to the minimum compressive strength, aging, reinforcement, and thickness stated in the table above. ALL BENDPAK LIFTS MUST BE INSTALLED ON CONCRETE ONLY. DO NOT install any BendPak lift on expansion seams or on cracked or defective concrete. All ¾ inch diameter anchors must be a minimum of 6 inches away from any expansion seams, control joints or other inconsistencies in the concrete. All anchors must be a minimum of 6" away from any expansion seams, control joints or other inconsistencies in the concrete. Refer to anchor manufacturer specifications for specific information concerning edge distances and bolt to bolt distance requirements. NEVER install a BendPak lift on hand mixed concrete. DO NOT install any BendPak lift on a secondary floor level or on any ground floor with a basement beneath without written authorization from the building architect and prior consultation and approval from BendPak. If the floor does not meet these minimum pre-existing floor requirements, it is suggested to construct a slab as outlined below in New Slab Recommendations. If the location of the lift is in a seismic zone, contact BendPak for seismic slab designs. NEW CONCRETE SLAB RECOMMENDATIONS The information contained in this appendage supersedes any other information given in the accompanied manual. This information is presented for design recommendations for a new concrete slab in the event that the pre-existing floor does not meet minimum requirements of the applicable lift type. Please read all instructions below carefully before producing new slab. Minimum tensile strength of concrete: Minimum aging of new concrete slab: NEW CONCRETE SLAB CONCRETE REQUIREMENTS: 4,000 PSI Minimum thickness of concrete slab: 28 days (cure time) Minimum width and length of slab: See new slab table & figures below See new slab table & figures below LIFT MODELS GP-7 Series Models MIN SLAB THICKNESS 12" W MIN. SLAB WIDTH 48" Min XPR-9 Series Models 12" 48" Min XPR-10 Series Models 12" 48" Min XPR-12/15 Series Models 12" 72" Min XPR-18 Series Models 12" 72" Min HD-7 Series Models 12" HD-9 Series Models 12" GP-9 Series Models 12" HDS-14 Series Models 12" PL-6K Series Models 12" HDS-18 Series Models 12" HDS-27 Series Models 12" HDSO-14 Series Models 12" HD-973P 12" HDS-35 Series Models 12" HDS-40 Series Models 12" 24" Min* 24" Min* 24" Min* 24" Min* 24" Min* 24" Min* 48" Min* 48" Min* 48" Min* 48" Min* 48" Min* *Four separate slabs formed at each post. L MIN. SLAB LENGTH 12" Wider Than OA Width of Lift 12" Wider Than OA Width of Lift 12" Wider Than OA Width of Lift 12" Wider Than OA Width of Lift 12" Wider Than OA Width of Lift 24" Min* 24" Min* 24" Min* 24" Min* 24" Min* 24" Min* 48" Min* 48" Min* 48" Min* 48" Min* 48" Min* R REINFORCEMENT SIZE (SEE NOTE 1 & 2) 8 - #4 - Main Bars 21 - #4 - Temperature Bars 8 - #4 - Main Bars 21 - #4 - Temperature Bars 8 - #4 - Main Bars 21 - #4 - Temperature Bars 12 - #4 - Main Bars 23 - #4 - Temperature Bars 12 - #4 - Main Bars 23 - #4 - Temperature Bars 8 - #4 Bars 8 - #4 Bars 8 - #4 Bars 8 - #4 Bars 8 - #4 Bars 8 - #4 Bars 16 - #4 Bars 16 - #4 Bars 16 - #4 Bars 16 - #4 Bars 16 - #4 Bars S1 & S2 REINFORCEMENT SPACING (SEE NOTE 3) 6" - Long Bars 8" - Short Bars 6" - Long Bars 8" - Short Bars 6" - Long Bars 8" - Short Bars 6" - Long Bars 8" - Short Bars 6" - Long Bars 8" - Short Bars 6" - Each Way / Crisscross 6" - Each Way / Crisscross 6" - Each Way / Crisscross 6" - Each Way / Crisscross 6" - Each Way / Crisscross 6" - Each Way / Crisscross 6" - Each Way / Crisscross 6" - Each Way / Crisscross 6" - Each Way / Crisscross 6" - Each Way / Crisscross 6" - Each Way / Crisscross D ANCHOR DIA. 3/4" 3/4" 3/4" 3/4" 3/4" 3/4" 3/4" 3/4" 3/4" 3/4" 3/4" 3/4" 3/4" 3/4" 3/4" 3/4" I ANCHOR LENGTH 5" 5" 5" 7" 7" 5" 5" 5" 5" 6" 7" 7" 5" 5" 7" 7" Temperature bars are steel rods placed horizontally (longwise) in concrete slabs for prevention of cracks due to temperature changes or drying; placed perpendicular to the main reinforcing rods (short span). Temperature bars are placed at right angles to the main reinforcing bars. Note 1: Temperature bars are steel rods placed horizontally (longwise) in concrete slabs for prevention of cracks due to temperature changes or drying; placed perpendicular to the main reinforcing rods (short span). Temperature bars are placed at right angles to the main reinforcing bars. An additional layer of 6 x 6 - 10/10 WWF at mid height of new slab would be advisable in any extremely hot or cold climate to control cracking due to temperature fluctuations and shrinkage. At anchor bolt locations only keep WWF mesh below the elevation of the anchorage to avoid drilling interference with the wire. Note 2: The main reinforcing and lower temperature steel shall be Grade 60 deformed bars Note 3: The tolerance on spacing of the bars in each direction shall be the value shown, plus or minus 1 inch. In addition, the number of bars specified in the table must be used. Note 4: The concrete outline dimensions and the reinforcing shown are for a foundation bed allowable bearing capacity of not less than 2,000 lb. / sq. ft. (1 ton per square foot). Many clays, and most all firm clay, hard clay, sand & clay mixes, dry sands, coarse dry sands, dry sand and silt mixes, sand and gravel mixes, and gravel type soils meet or exceed this allowable bearing capacity. If there is question regarding the foundation bed allowable bearing capacity, a soils testing engineer should be consulted. Situations where the allowable bearing capacity is lower than this value will require special attention. New concrete slabs must conform to the above stated properties before installation of the lift is deemed acceptable. The new slab must be totally surrounded by an existing asphalt or concrete floor. Certified strength documentation should be obtained from the firm who supplies the concrete mixture at the time of the pour. These new concrete slabs are designed as "stand alone" and do not take into account the contribution of strength from surrounding concrete. It may be desirable to tie and reinforce the new slab to the pre-existing surrounding floor. Care should be taken to locate any reinforcement bars away from any anchor positions of the specific lift. These new concrete slabs do not account for second floor installations or installations in a ground floor with a basement beneath. For this case, the lift should not be installed without written authorization from the building architect. All ¾ inch diameter anchors must be a minimum of 6 inches away from any expansion seams, control joints or other inconsistencies in the concrete. NEVER hand mix your own concrete.Acrobat Distiller 10.0.0 (Windows)