Varco Pruden BuildingsOrder Clarification Form
TOP RUNNING CRANE/ Project Number: / Questions Answered By: / Date:
Please provide the following information for the proper design of the crane support structure. If multiple cranes are present, more than one sheet may be needed. Please provide a plan showing the extent and relative location of each crane system.
GENERAL TOP-RUNNING CRANE DATA:
Design Specification: AISC / S16 (Std) AISE Technical Report #13 (add’l cost and time required)
Runway Support Option: A Brackets (Maximum 55 kip bracket load; Maximum 20 ton crane)
B Auxiliary (Independent) Crane Columns8 By VP By Others
C Stepped Crane Column9 (Fixed Base Column Strongly Recommended)
Stepped - Fixed Base Stepped - Pinned Base
Grouted base with leveling nuts is strongly recommended for cranes > 10 tons 2” grout No grout
Runway Beams and Lateral Ties: By VP By Others5 - Runway size:
Crane Rail Size: ASCE lbs/yd (Crane rail and attachment NOT by VP)
If crane is supported on interior columns, can rod bracing go to the floor at interior columns?4 Yes No
If Yes, provide locations where interior bracing is allowed:
CRANE DESIGN DATA: PROVIDED DATA PRESUMED DATA7 (Must be verified.)
Crane Capacity: TonsNo. Cranes per Aisle: Min. Dist. Between Cranes “M”:
Crane Bridge Girder Type: Single Girder Double Girder Other
Service Classification: A (Standby) B (Light) C (Moderate) D (Heavy) E (Severe)
Method of Operation: Hand Geared Pendant Operated Cab Operated Radio Controlled
Impact Factors: VP to Determine Per Governing Building CodeVertical Impact: %
Other: Please provide. Must meet Bldg Code, min.Lateral Impact: %
Longitudinal Impact: %
Max. Wheel Load (w/o Impact): kips
Total Bridge Wt.: kipsHoist and Trolley Wt.: kips
No. of Wheels per Endtruck: Wheel Spacing:
Assumed Crane Stop Force: kips (Crane Stop NOT by VP)
Crane Runway Deflection Limits:Main Frame Drift Limit Due to Crane Lateral or 10-Year Wind
Vertical: VP Recommended (Note #6)(2” limit is at Runway Elevation):
Span / Eave Ht/100 2” for Hand, Pendant or Radio Operated crane
Other: Span / Eave Ht/240 2” for Cab Operated crane
Horizontal: Span / 400 (Standard) Other: Eave Height / ” at runway elevation
Other: Span /
CRITICAL DIMENSIONS: (Include OSHA Requirements.)
“A” Bridge Span (centerline to centerline of runway/rail):………………...
“B” Horizontal Clearance (centerline of runway/rail to face of column):…
“C” Vertical Clearance (top of rail to underside of frame rafter):…………
“D” Top of Rail Elevation (dimensioned from finished floor):……………..
“E” Top of Bracket/Column Elevation (dimensioned from finished floor):.
NOTES PERTAINING TO TOP RUNNING CRANE(S)
1) The building and crane support system (if by VP) has been designed to support a crane with the criteria shown. If the actual crane installed does not fall within these parameters, please contact VP as the design may no longer be valid.
2) Crane rail must be centered on crane runway beams. Crane rail and method of attachment not by VP.
3) Crane rod-bracing should be wire-tied together at the center to prevent the rods from slapping during crane operation.
4) VP Buildings recommends the use of rod bracing at interior columns from the crane runway elevation down to the base of the columns, where applicable. VP will not be responsible for potential crane related problems in the future. These include, but are not limited to misalignment of the crane runways, wear on the rails and wheels and squareness of the crane.
5) If VP Buildings is not providing the crane runway:
- Simple span runway design is assumed.
- VP Buildings will not provide the lateral ties. Lateral ties are required on all crane systems, even if VP is not providing the ties. For lateral ties NBVP, bearing stiffeners both sides of the column web need to be provided at the lateral tie elevation and should be incorporated into the tie-back system to avoid local separation of the column flange and web. These bearing stiffeners are NBVP.
- For runway beams and lateral ties NBVP, please provide the preferred connection details so that VP brackets and columns may be designed and detailed appropriately. The design of the runway system and tie-back system should be done by a qualified design professional, experienced in crane system designs.
- VP Buildings requires the bolt size and pattern for fastening the runway to the bracket as well as the method to be used to laterally tie the runway to the column. If this information is not supplied, VP will assume a runway size and locate bracket holes for 3/4” diameter bolts accordingly and will assume the method of laterally tying the runway to the column in order to properly design the column.
Bolt Pitch required, if other than shown:
NO HOLES REQUIRED. BRACKET WILL BE FIELD MODIFIED.
- VP will not be responsible for the compatibility of these assumptions with the final, required conditions.
Vertical Deflection of Runways - Span / 600 for Class A, B or C crane
Span / 800 for Class D crane
Span / 1000 for Class E crane
Horizontal Deflection of Runways -Span / 400 for all service classifications
7) PRESUMED CRANE DATA:
If the actual crane data is unavailable, presumed data can be requested. However, the actual crane used must fall within the presumed limits. Any beef-up, field work or other modifications related to the actual crane data exceeding the presumed crane data will NOT be the responsibility of VP Buildings.
Presumed crane data is per the following VP standard assumptions:
Governing design specification: AISC
Service Classification: Class C
Crane Design Data: Per the “Kranco” crane data for the crane capacity specified
Frame Drift: Hand, Pendant or Radio Operated - H /100 (2” max.); Cab Operated cranes - H / 240 (2” max.)
8) Crane bracing in buildings with auxiliary/independent crane columns will be between crane columns, not frame columns. Building bracing for wind/seismic forces will be between frame columns.
9) Crane bracing in buildings with stepped crane columns will be at or near the inside flange of the columns under the crane runway. Building bracing for wind/seismic forces will be toward the outside flange of the columns.
Issued: 07/01/98 Rev. 6: 3/26/08Page 1 of 2FM702907