Canopy Solutions L-Bent Canopy Calculator

Important Message from Engineering Express

By clicking below, you agree that the use of this design aid is for estimating purposes only. Results are not valid for use & no construction or design shall be performed without the review and certification by a registered professional engineer.

No warranty or guarantee whatsoever is offered with any results obtained herein.


AGREE & CONTINUE
Canopy Solutions L-Bent v16
logo
                         L-Bent / T-Bent Walkway Cover Calculator (ASD)
                      ASCE 7     Version v16      4/13/20
DISCLAIMER: THIS CALCULATOR IS ONLY VALID FOR FLAT ROOF WALKWAY COVERS WITH ZERO SLOPE
Loading
ASCE:
IBC 03/06/09 = ASCE 7-05
IBC 12/15 = ASCE 7-10
IBC 18 = ASCE 7-16
V : mph
V ult : mph
Exposure:
Risk Cat.:
Live Load: psf
Dead Load: psf
Ground Snow Load: psf
Superstructure
Against Host?
MRH:
Mean Roof Height
ft
URL:
Upper Roof Length
ft
PH:
Parapet Height:
ft
Canopy 
Deck Parallel to Walk.?
Post Nearer to Host?
For T-Bents, leave as Yes
W:
Width
ft
S:
Post Spacing
ft
H:
Height to top of post
ft
BS:
Back Span
ft
FS:
Front Span
ft
No. of Gutt./Pur.:
PS1:
Gutter/Purlin spacing 1
ft
PS2:
Gutter/Purlin spacing 2
ft
PS3:
Gutter/Purlin spacing 3
ft
PS4:
Gutter/Purlin spacing 4
ft
Fascia Height:
When decking is perpendicular to walkway, fascia height is net of fascia height AND beam height parallel to walkway
in
Welded Base Plate?
ASD Load Combinations (Post)
Effective Combinations:
Gravity:
Uplift:
1.
2.
3.
4.
5.
6a.
6b.
7.
8.
Legend:
D = Dead Load Lr = Roof Live Load S = Snow Load W = Wind Load
Decking Capacity

INVALID WITHOUT
ENGINEER SEAL

Purlin Capacity

        INVALID WITHOUT ENGINEER SEAL

Beam Capacity

INVALID WITHOUT
ENGINEER SEAL

INVALID WITHOUT
ENGINEER SEAL

Post Capacity

INVALID WITHOUT
ENGINEER SEAL

INVALID WITHOUT
ENGINEER SEAL

Gusset Capacity
Beam:
Post:
Quantity:
Gusset:
in
2" Washer?
1/2" Bolt Capacity:
ASD Reactions to Host Structure at Base of Post
Post:
Gravity:
Uplift:
Moment:
Lateral:
Foundation Design
USCS Soil Class:
GW: Well-graded gravel
GP: Poorly graded gravel
GM: Silty gravel
GC: Clayey gravel
SW: Well-graded sand
SP: Poorly graded sand
SM: Silty sand
SC: Clayey sand
ML: Silt
CL: Lean clay
OL: Organic clay/silt (low plasticity-LL<50)
MH: Elastic silt
CH: Fat clay
OH: Organic clay/silt (high plasticity-LL>=50)
Footing Diameter:
Footing Depth:
Vertical Rebar:
Stirrups:
  Information                                                
  Rain Load (R) is ignored 334461 332450 313492 312330 303631 281991 280718  
  Monoslope, 0 slope, canopies only  
  Load Combo 6a reserved as TX canopy engineers not considering roof maintenance during wind/snow design event  
  Steel decking Fb calculated to replicate manufacturer tested data for bending/deflection  
  Wind direction gamma=90 not considered as worst case tributary on posts occurs a signicant distance away from canopy ends to create average gamma=0,180 coefficients to equal gamma=0 condition  
  Drift snow idealized as UDL as analyzing drift for L-Bents against host with post near/far away from host and T-Bents against host becomes too complex to calculate  
  For post unity, combined bending and axial for lateral wind and vertical D,W,S and separate check for D,Lr axial without lateral wind as roof TX canopy engineers not considering roof maintenance during wind/snow design event  
  Positive sign convention for post moment from wind is clockwise positive  
  D+Lr load combination analyzed as full and partial loading to create (2) worst case scenraios of high bending low axial and low bending high axial  
  Post allow axial and bending stresses increased to matched VA results via factors in OneNote  
  For double posts, moment divided by spacing between posts plus 1" and axial not considered to match results from similar analysis in VA  
  Assuming 15 psf soil adhesion for drained clayey soils for footing uplift calculations, however drained soils can result in 0 psf soil adhesion  
 
  Decking (Moment) Load Combinations   Grav Control Uplift Control   Loads  
  1 D     D      
  2 D     S      
  3     Lr    
  4     Wp    
  5     Wn    
  6a     R 0      
  6b        
  7    
  8 0.6D    
  Max:    
         
  Decking (Deflection) Load Combinations   Grav Control Uplift Control   Loads  
  1 D     D  
  2 D     S  
  3     Lr  
  4     Wp  
  5     Wn  
  6a     R 0  
  6b        
  7    
  8 0.6D    
  Max:    
         
  Beam (Moment) Load Combinations   Grav Control Uplift Control   Loads  
  1 D     D