3/31/2012 Bureau of Ride and Measurement Standards PA Department of Agriculture 2301 N. Cameron Street Harrisburg, PA 17110 Attn: Mr. Joseph Filoromo RE: Ninja Jump Monster Dry Slide Dear Mr. Filoromo, We have reviewed the Monster Dry Slide Technical Dossier provided by Sawyer, Duncan & Associates. The Monster Dry Slide inflatable is an amusement device manufactured by Ninja Jump of Los Angeles, CA. Based on our review, we hereby certify that the design of Monster Dry Slide inflatable satisfies the wind load requirements of the 2009 International Building Code as required by the State of Pennsylvania. The structure also satisfies the requirements of ASTM F-24 in general and ASTM F2291-03, ASTM 2374-04 and the Pennsylvania Regulations Chapter 139 Pa Code 7, in particular. The ground anchors specified in the technical dossier are adequate to fully restrain the Inflatable Amusement Device in a 15 mph wind. When wind speeds are expected to exceed 15 mph, the ride shall be deflated and closed for the duration of the wind event. I trust this information is sufficient for your needs at this time. Please do not hesitate to contact our office should you have any questions. Regards, Clark-Reder Engineering, Inc. Jeffrey M. Reder, P.E. 3/31/12 Attachments: Monster Dry Slide Technical Dossier Clark-Reder Engineering, Inc 4828 Business Center Way, Cincinnati, OH, 45246 Phone (513) 851-1223 Fax (513) 297-0934 www.clarkreder.com
Pennsylvania Department of Agriculture Bureau of Ride and Measurement Standards Ride Approval Checklist Name and address of the manufacturer of the Ride or Attraction Ninja Jump 3221 San Fernando Road Los Angeles, CA 90065 Telephone # (325) 255-5418 (Grace Chavez) Fax # 323-255-1312 Email- info@ninjajump.com Web site - http://www.ninjajump.com Approved Manufacturers name of the Ride Monster Dry Slide Pet name of the Ride (if applicable) Minimum/Maximum Height Requirement (if applicable) Max = 72 Min = 42 Minimum/Maximum Age Requirement (if applicable) N/A Minimum/Maximum Weight Requirement (if applicable) Max weight = 250 lb per Is this an Inflatable Water Related Ride? YES NO X Does it meet the Department of Health guidelines regarding regulated water attractions: YES NO N/A Name and address of Pennsylvania Licensed Engineer providing certification Jeffrey M. Reder, P.E. 4828 Business Center Way Cincinnati, OH 45246 Telephone # (513) 419-9909 Fax # (513) 297-0934 E Mail- jreder@clarkreder.com First company to register the ride (if applicable) - Has the Department received an owner s manual? Has the Department received a photograph of the ride or attraction? - Approved name of the ride or attraction Monster Dry Slide Notes: Class
MONSTER DRY SLIDE TECHNICAL DOSSIER Introduction and Summary I have examined the design of the Monster Dry Slide amusement device manufactured by Ninja Jump Inc. of Los Angeles, California, USA and have performed wind load calculations. I hereby certify that the design of Ninja Jump s Monster Dry Slide satisfies the requirements of ASTM International F-24 Committee Standards in general and ASTM F2291-09b and ASTM 2374-10 in particular. I also certify that the specified anchors of 6 bottom anchors and 2 upper tethers, 18 stakes are adequate to fully restrain this Inflatable Amusement Device in a 15 mph wind. Michael J. Viechweg, P.Eng Sawyer, Duncan & Associates Monster Dry Sldie Dossier
Description of Ride This is a 35 L x 12 6 W x 18 H rectangular interactive air slide with two individual lanes. The slide is inflated using one 1-1.5 HP electric fan. Patrons enter at the front entrance of the device and use the climbing grips/stairs to reach the top of the slide. The device has netting at the top to stop diving and the operators can easily supervise the activities of the patrons and communicate to them. Specifications of the device are as follows: 1. Dimensions: 35 L x 12 6 W x 18 H max ht, 395 lbs. 2. Construction: fibre-reinforced fabric, 15 oz Fire Retardant material certified to NFPA 701 (certificate attached). 3. Two (2) operators are needed to operate this device. 4. Maximum participants: Children only with a maximum of 2 participants. Maximum weight of 250 lbs each and minimum height of 42 and a max 70 tall. Operator to ensure large boisterous children are not mixed with small timid ones. Sawyer, Duncan & Associates Monster Dry Sldie Dossier
5. Anchors: Minimum of 6 anchors. Stakes, if used, are to be a minimum of 18 in length, 5/8 diameter and driven completely into firm ground, such as grassed areas, or directly into asphalt. 24 stakes may be used but driven at least 75% (i.e. 18 ). Loose soil is unacceptable. A minimum of 50 lb ballast sandbags are acceptable for 15 mph winds. If indoors the upper tethers are not required and conduit strap anchored using concrete or wood fasteners are acceptable. The manufacturer may suggest more. 6. Blower: one 1-1.5 HP, producing min 700 cfm and max 900 cfm @ 5 wg. Typical inflation pressure for this type of device with sewn (rather than welded) seams is 5 7 (26 36 psf.) with a 1 HP blower. Blowers shall be fitted with a non-return valve or flap to minimise deflation. 7. Weather restrictions: Maximum wind speed for operation is 15 mph. Calculations are attached. Compliance Compliance with ASTM F 1159-03a, section 7.6 is as follows: a) Flame-out: certificate attached b) Hold-down is shown in the attached drawings, and is designed for maximum operating wind speeds of 15 mph. Calculations are attached. c) Concealment: Open structure, operators can monitor entire unit d) Exit Lighting: Not applicable e) Deflation: Open device and fast evacuation, operator on duty when patrons are on unit, no increased risk of injury due to sudden loss of power to blower. Sawyer, Duncan & Associates Monster Dry Sldie Dossier
Pattern Name: MONSTER DRY SLIDE-SEWING INSTRACTION BACK VIEW MESH 18' 0" SLIDE SLIDE 0' 6" 1' 8" 3' 3" 1' 8" 3' 3" 1' 8" 0' 6" 12' 6"
Pattern Name: MONSTER DRY SLIDE-SEWING INSTRACTION FRONT VIEW 3' 6" 4' 4" MESH 5' 8" CLUMB CLUMB 10' 2" 2' 8" 1' 10" 0' 6" 1' 8" 3' 3" 1' 8" 3' 3" 1' 8" 0' 6" 12' 6"
Pattern Name: MONSTER DRY SLIDE-SEWING INSTRACTION 1' 8" 3' 6" ZIPPER 18" RIGHT SIDE VIEW O CLIMB ENGLE 60 4' 7" O SLIDE ANGLE 49 18' 0" 5' 5" HIGH LEVEL ANCHOR POINTS 2 PLACES 10' 2" 4' 6" BLOWER TUBE ZIPPER 36" 5' 8" 4' 10" 2' 2" 9' 6" 12' 10"
Pattern Name: MONSTER DRY SLIDE-SEWING INSTRACTION FRONT TOP VIEW 2' 2" CLUMB SLIDE 12' 6" MESH MESH 8' 2" CLUMB SLIDE 2' 2" 11' 6" LOW LEVEL ANCHOR POINTS 6 PLACES 35' 0"
Sawyer, Duncan & Associates Report No: Page No: 1 Prepared By: M. Viechweg, P.Eng. Date: 30-Mar-2012 Subject: MONSTER DRY SLIDE Calculate wind loads using the UBC Method 2 - Projected Area From attached drawing, vertical projected area, Av = 283.5 sq.ft. = 4.5' x 32' + 1/2(15.5' x 18') (avg lengths used) horizontal projected area, Ah = 400.0 sq.ft = 17.5' x 17' (avg lengths used) For wind speed = 15.0 mph = 22.0 ft/sec Using qs = 0.5*ρ*V 2 where p = 0.002378 slug/cu.ft qs = 0.58 psf Cq = 1.30 Horizontal = 0.70 Uplift Ce = 1.00 Exposure coefficient not applicable Hence q = qs * Cq * Ce Hence: Total horizontal wind pressure Ph-tot = q * A = 0.75 psf - horizontal = 0.40 psf - uplift = 212.1 lb - unfactored = 318.1 lb - factored Weight of Unit Coefficient of friction Hence, resistance to sliding Net Horizontal Load on Anchors 395 lb. 0.60 (assumed) 140.32 lb 177.8 lb Similarly for uplift loads Pv-tot = 161.1 lb - unfactored = 241.7 lb - factored
Sawyer, Duncan & Associates Report No: Page No: 2 Prepared By: M. Viechweg, P.Eng. Date: 30-Mar-2012 Subject: MONSTER DRY SLIDE Calculate Overturning Moments Horizontal Load, P = Center of Pressure, h = Horiz center of gravity = Moment due to Wind = Moment due to (weight-uplift) = Net Moment (Factored) = 212.1 lb 5 ft 6.25 ft 1060.5 lb-ft 1461.7 lb-ft -601.8 lb-ft Anchors Number L, ft N*L^2 Load, lb 3 13 507.0 0.00 1 15 225.0 0.00 732.0 For this device, there are: 4 Anchors/side effective - Lateral 8 Anchors effective - Uplift Summary Total Gross Factored Load = 318.1 lb Lateral Total Net Factored Load = 107.7 lb Lateral 241.7 lb Uplift 0.0 lb Uplift Maximum vertical load per anchor, combining uplift and overturning 0.00 lb Hence Net Load/Anchor = 26.9 lb Lateral Equivalent Anchor Weight = 45 lb. 0.0 lb Vertical (For lateral loads, considering friction effects)
Sawyer, Duncan & Associates Report No: Page No: 3 Prepared By: M. Viechweg, P.Eng. Date: 30-Mar-2012 Subject: MONSTER DRY SLIDE Anchor Pull-Out Load Allowable Anchor Size: 18" submerged depth & 5/8" diameter Angle: Vertical / Perpendicular to ground / 90 degrees Upper Tethers: Angle of tethers to ground should be 60-80 degrees to reduce tripping hazzard Use Phmax = Pvmax = 300 lb. Lateral 200 lb. Vertical Hence Min Factor of Safety on Wind Load @ 15 mph = >10 Lateral = >10 Vertical Maximum Allowable windspeed = 27.9 mph and Min Factor of Safety on Wind Speed of 15 mph = 1.9
Calculation of Windloads Acting on an Inflatable Amusement Device Introduction This report details the method used in the calculation sheet attached. Various methods have been considered, especially those contained in Fluid Dynamic Drag, Chapter 4, by Hoerner. However it was decided to use the basic approach used in Building Codes since these are more readily accessible to the reviewer and use very similar coefficients to those suggested by Hoerner. It is impractical to make a detailed analysis of the forces on individual rides, taking account of the wildly irregular shapes found on many designs. The approach here has been simplified to assume a bluff body normal to the incident airflow. In cases where the inflatable device is cylindrical, or otherwise shaped to significantly reduce the profile drag coefficient, the Engineer preparing the calculations may choose to use a reduced C D in order to take this effect into account, thus avoiding overly conservative results. Assumptions Windloads are calculated using the method outlined in the Uniform Building Code, Method 2 Projected Area Method, based on the assumption of a closed structure. This method is most appropriate for the fully enclosed rectangular bouncer. Open irregular devices may experience lower uplift loads than those calculated here due to turbulence and flow separation. It is assumed that the device is firmly anchored to the ground and that the wind does not penetrate under the unit. The calculation method used in the UBC (and all other Building Codes) makes use of a gust/exposure coefficient. This is used to factor the general wind speed over a wide area to represent the net local effect. In our case, we are concerned with the wind speeds measured at the site, hence any addition (or reduction) due to exposure is not appropriate. Gusts still have to be taken into account, and it is recommended that the wind speed used in the calculation be interpreted as the maximum gust speed, rather than the average steady speed. The safety factor of 1.5 on calculated loads, plus the generally conservative nature of the calculation method, will provide the operator with sufficient margin of safety over the specified maximum operational wind speed. Anchor Allowable Loads Ultimate pull-out loads for typical 18 x 5/8 steel anchors have been determined by test and these values are used in the new CEN Standard, pren14960. The lateral pull-out value in that Standard is 1600N, 360lb. We have reviewed the test data used for that Standard and have included the results for vertical pull-out as well. Since the failure loads will be dependant on soil conditions, we have reduced the test values to more modest levels in order to take account of these variations. Our standard allowables are: horizontal 300lb, vertical 200lb. The larger tent stakes, measuring 36 x 7/8 or more, commonly used for the extra large slides have failure loads well in excess of 1,000lb. However the limiting factor now becomes the strength of the anchor point on the inflatable, which is dependant on the strength of the fabric and the design of the anchor point. From experience, we have determined that a typical allowable load on a single, welldesigned anchor point is no less than 600lb and this value will be used in the calculations. Considering this, it is quite acceptable for one of those large tent stakes to be attached to two anchor points on the inflatable. Sawyer, Duncan & Associates Windloads on Inflatable Rides Page 1
Method of Calculation Horizontal Forces P f = µ (W P u ) µ = coefficient of friction It is assumed that anchors on the leeward side are not effective in reacting the horizontal forces. Hence: P P f = H 1 + H 3 Horizontal anchor reactions will be considered equal (i.e. H 1 = H 3 ) Vertical Forces P u = W + R 1 + R 2 + R 3 + R 4 Vertical anchor reactions will be considered equal (i.e. R 1 = R 2 = R 3 = R 4 ) Overturning Moment Take moments about R 2 : M R2 = P.h - (W P u )x = R 1.2x {+ R 3 (2x + y)} Where R 3 exists, the reaction on an individual anchor is calculated by: R = M.L/ (n.l 2 ) where: L is moment arm and n is number of anchors at that location Sawyer, Duncan & Associates Windloads on Inflatable Rides Page 2
NINJA JUMP NEW PRODUCT SPEC SHEET (Please Fill Out what is applicable and write N/A if the item does not apply to product or 0 if it does not have one) All Sizes are inflated size All items with * to be filled by Ninja Jump PRODUCT NAME: Monster Dry Slide DATE: 09.28.11 * SKU: Standard Inventory Item: With Ramp Foot Prints / Schematic: Attached Without Ramp 3D Images: Attached Length: 35 0 Width: 12 6 Height: 18 0 (14 10 with out top arch) Weight: 395 Lbs. Slide Length: 12 9 Width: 2 10 Angle: 49 degree Slide Blanket Length: 28 10 Width: 2 10 Weight: Climb Width: 2 10 Climb Angle: 60 degree Landing Length: 12 5 Platform Size: 2 0 x 2 10 Slide Height From Ground: 10 2 From Landing Area: 8 4 Pool Dimension: L: N/A W: Depth: Anchor Points: Low Level Qty: 6 High Level Qty: 2 Sign Banner Attachment Locations (example: one in the front and one on the right side): One (1) on the right side railing near the exit. Roof (Type & Material) (example: convertible, mesh, permanent, etc): Permanent mesh roof top of the slide platform. Velcro Drain (Qty & Location): N/A Base Height: 1 10 Color: Purple Materials - Reinforced PVC Light N Strong Unit Colors: Purple, Yellow, Lt. Blue, Red Cushion Pad Qty: 4 Horizontal zipper (Qty, Location & Size): Two (2). One(1) on the left side 36 long & One(1) on the right side 36 long Vertical zipper (Qty, Location & Size): N/A Blower Tubes (Qty & Location): Two (2). One (1) on the right side & one(1) on the left side Removable/Replaceable Part/s: Slide Blanket, Climb Cover, Cushion Pads 4 pcs. Rolled up size: L: 38 W: 38 H: 52 * Recommended Blower/s: One (1) AA-1 * Clearance needed for set-up: 38 0 x 15 6 *Max. # of Plyr: 2 *Max. Plyr wt: 250 Lbs *Max. Plyr ht: 70 *Min. Plyr ht: 42 Accessories included (example: mister hose, balls, etc): N/A Obstacles included (example: pop ups, logs, etc): Climb, Slide Other Notes: Specsheet06.28.09
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