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Committee of the Whole/Documents/Attachment 6 - Engineering Load Tables
Appendix

Attachment 6 - Engineering Load Tables

July 12, 2022Page 4062 sections

Technical load tables and structural charts for 3" and 3.5" square tube aluminum beams.

2 APPROVAL OF AGENDA
March 12, 20216061-T6 AluminumSnow load calculations

LOAD TABLES FOR 3"x3"x0.1" SQUARE TUBE BEAM

Cross-section diagram of 3" square tube beam
Cross-section diagram of 3" square tube beam

ALLOWABLE LOAD (psf) - 2-POSTS (TYPE 1)

POST SPACING (ft.) ROOF PROJECTION (ft.)
5 6 7 8 9 10 11 12
5 108 90 77 67 60 54 49 45
6 75 62 53 47 42 37 34 31
7 55 46 39 34 30 27 25 23
8 42 35 30 26 23 21
9 33 28 24 21
10 27 22
11 22
12

ALLOWABLE LOAD (psf) - 3-POSTS (TYPE 2)

POST SPACING (ft.) ROOF PROJECTION (ft.)
5 6 7 8 9 10 11 12
5-5 108 90 77 67 60 54 49 45
6-6 75 62 53 47 42 37 34 31
7-7 55 46 39 34 30 27 25 23
8-8 42 35 30 26 23 21
9-9 33 28 24 21
10-10 27 22
11-11 22
12-12

ALLOWABLE LOAD (psf) - 4-POSTS (TYPE 3)

POST SPACING (ft.) ROOF PROJECTION (ft.)
5 6 7 8 9 10 11 12
5-5-5 112 96 84 75 67 61 56
6-6-6 93 78 67 58 52 47 42 39
7-7-7 68 57 49 43 38 34 31 29
8-8-8 52 44 37 33 29 26 24 22
9-9-9 41 34 30 26 23 21
10-10-10 34 28 24 21
11-11-11 28 23 20
12-12-12 23
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LOAD TABLES FOR 3 1/2"x3 1/2"x0.1" SQUARE TUBE BEAM

ALLOWABLE LOAD (psf) - 2-POSTS (TYPE 1)

POST SPACING (ft.) ROOF PROJECTION (ft.)
5 6 7 8 9 10 11 12
5 101 88 79 71 64 59
6 98 82 70 61 54 49 45 41
7 72 60 52 45 40 36 33 30
8 55 46 39 35 31 28 25 23
9 44 36 31 27 24 22 20
10 36 30 25 22 20
11 29 24 21
12 24 20

ALLOWABLE LOAD (psf) - 3-POSTS (TYPE 2)

POST SPACING (ft.) ROOF PROJECTION (ft.)
5 6 7 8 9 10 11 12
5-5 101 88 79 71 64 59
6-6 98 82 70 61 54 49 45 41
7-7 72 60 52 45 40 36 33 30
8-8 55 40 39 35 31 28 25 23
9-9 44 36 31 27 24 22 20
10-10 36 30 25 22 20
11-11 29 24 21
12-12 24 20

ALLOWABLE LOAD (psf) - 4-POSTS (TYPE 3)

POST SPACING (ft.) ROOF PROJECTION (ft.)
5 6 7 8 9 10 11 12
5-5-5 111 99 89 81 74
6-6-6 102 88 77 68 61 56 51
7-7-7 90 75 65 57 50 45 41 38
8-8-8 69 58 49 43 38 35 31 29
9-9-9 55 46 39 34 30 27 25 23
10-10-10 44 37 32 28 25 22 20
11-11-11 36 30 26 23 20
12-12-12 31 25 22

3" TUNDRA PANEL

TABLE "A" MAXIMUM PANEL SPANS

Superimposed Loads in lbs/sq. Ft. Or basic wind speed in mph PANEL THICKNESS 3.0"
10 PSF LIVE LOAD 15'-3"
20 PSF LIVE LOAD 14'-8"
20 PSF SNOW LOAD 13'-1"
30 PSF SNOW LOAD 10'-10"
40 PSF SNOW LOAD 9'-5"
50 PSF SNOW LOAD 8'-5"

6" ALASKAN PANEL

MAXIMUM PANEL SPANS

Superimposed Loads in lbs/sq. Ft. Or basic wind speed in mph CLEAR SPAN
10 23'-0"
20 18'-1"
30 14'-11"
40 12'-11"
50 11'-6"
60 10'-6"
70 9'-9"
80 9'

MINIMUM BEARING LENGTH = 1.5"

TABLE 5: LOAD CHARTS FOR AAA ALUMINUM POST SECTIONS

NOTE: MATERIAL REQUIREMENTS 6061-T6 ALUMINUM

Legend:

  • 2"x3 1/2" POST
  • 3.5" x0.09" SQUARE
  • 3" x0.09" SQUARE
  • 2 1/2" x0.0825" SQUARE

GENERAL NOTES

PLEASE SEE NOTES/DRAWING 91-1026-1

NOTES:

  1. CALCULATION OF POST LOADS
    • PROJ. = PROJECTION FT.
    • SPACE = POST SPACING FT.
    • SNOW LOAD = LB/FT
    • 1000LBS = 1 KIP
  2. POSTS TO BE SET PLUMB IN BOTH DIRECTIONS.
  3. ROOF BEAM TO BE SET FLUSH WITH POST SIDES.
  4. SEE NOTE 4 DRAWINGS 91-1026-1

POST LOAD FORMULAS:

  • TYPE 1: $\frac{\text{PROJ.}}{2} \times \text{SPACE} \times \text{SNOW LOAD}$
  • TYPE 2: $\frac{\text{PROJ.}}{2} \times \text{SPACE} \times \text{SNOW LOAD} \times 1.25$
  • TYPE 3: $\frac{\text{PROJ.}}{2} \times \text{SPACE} \times \text{SNOW LOAD} \times 1.10$
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Extracted from: 2022 07 12 Committee of the Whole agenda - Agenda - Pdf