calculator

Dome Worksheet Using Flex-C Trac

User Input Area
Step 1
For Domes with requirements of greater than 20 foot span or 20 psf loading please contact Flex-Ability Concepts.
Step 2
Dome Height cannot be more than one half the Dome Span.
Step 3
Click on drop down box and indicate the track type you have chosen. Note load capacity and choose accordingly.
Step 4
Click on drop down box and indicate the nominal rib spacing you have chosen, i.e. 12.
Step 5 Note Loading Capacity (psf): Confirm that the load capacity of your selection is sufficient for the dome loading requirement.
Step 6 Print Flex-C Trac Dome Information Sheet Loading capacity is computed for framing only with no contribution from sheathing/skin.
Track Type Flex-C Trac 3 5/8" - 20 Ga. Flex-C Trac 3 5/8" - 18 Ga. Flex-C Trac 3 5/8" - 16 Ga.
Nominal Rib Spacing (in.)
Actual Rib Spacing (in.)
Load Capacity (psf)
Number of Ribs
Length of Each Rib (in.)
Circum. of Tension Ring (in.)
"X" Indicates Track Type Chosen
 
Track Type Flex-C Trac 6" - 20 Ga. Flex-C Trac 6" - 18 Ga. Flex-C Trac 6" - 16 Ga.
Nominal Rib Spacing (in.)
Actual Rib Spacing (in.)
Load Capacity (psf)
Number of Ribs
Length of Each Rib (in.)
Circum. of Tension Ring (in.)
"X" Indicates Track Type Chosen
Flex-C Trac Dome
Dome Information and Material Sheet
 
Error in User Input Area
 
Flex-C Trac Dome
Dome Information and Material Sheet
  Dome Dimensions Est. Weight of Completed Dome (lbs.)
  Dome Span (in.):
  Dome Height (in.):  
  Load Capacity (psf.)**:  
  Ribs  
  Material Type:
  Number of Ribs:   Make half right and half left facing flanges to allow nesting at top.
  Length of Each Rib (in.):   Measured along the outside flange of the rib.***
  Radius of Each Rib (in.):   Outside radius.
  Nominal Rib Spacing (in.):  
  Actual Rib Spacing (in.):  
  Clips****   Use one clip per 18 or 16 Flex-C Trac Rib to attach to the tension ring.
  Compression Ring  
  Material Type:
 
  No. of links:
  Ring Inside Radius:
  Tension Ring  
  Material Type:
  No. of 10' Pcs. Needed:  
  Ring Outside Radius (in.):  
  Circumference (in.):  
  Assembly Steps  
  Step 1     Shape and secure* rib pieces.
  Step 2     Construct compression ring.
  Step 3     Shape and secure* tension ring pieces, construct tension ring.
  Step 4     Place three ribs in compression ring and tension ring equal distance apart.
  Step 5     Fill in remaining ribs into all three sections.
  Step 6     Check that all components are fastened securely.
  Step 7     Install dome into place and sheathe.
  * Refer to Flex-Ability Concepts dome drawings DD2-DD9 for instructions regarding fabrication, securing, and assembly of dome components.
  ** Refer to the letter Experimental Study of Flex-C Trac for Dome Applications by Roger LaBoube/Structural. Engineering dated: 6/29/10.
  *** If using 20 ga. Flex-C Trac add 1 1/8" extra of web length to fold over (for use as a clip when attaching to the tension ring.)
  **** Clips - Use Simpson Strong-Tie angle clip ML24 or equal.
Disclaimers:

Flex-Ability Concepts:
5500 W. Reno Ave, Ste 300
Oklahoma City, OK 73127
Tel: 886-443-3539
E-mail: info@flexabilityconcepts.com