MEP-HA Cartable-0109 - Hambro

HAMBRO SPAN TABLES
TABLE 6: D500 TM Clear Span Table
Slab
Thickness
NOTES:
• Minimum slab thickness = 2 1/2”
• Minimum top chord cover = 1”
• f’ c = 3,000 psi, F y = 50 ksi
• Table reflects uniform loads only.
Maximum Duct Openings
NOMINAL
JOIST DEPTH
TOP OF
CONCRETE SLAB
R
Residential Commercial
3” 3 1/2” 4” 3” 4”
Joist LL = 40 psf LL = 40 psf LL = 40 psf LL = 50 psf LL = 50 psf
Depth* DL = 65 psf DL = 71 psf DL = 77 psf DL = 65 psf DL = 77 psf
8” 20’ - 0” 20’ - 0” 20’ - 0” 20’ - 0” 20’ - 0”
10” 25’ - 0” 24’ - 6” 23’ - 6” 25’ - 0” 23’ - 6”
12” 30’ - 0” 27’ - 0” 26’ - 0” 30’ - 0” 26’ - 0”
14” 31’ - 0” 29’ - 6” 28’ - 0” 31’ - 0” 28’ - 0”
16” 33’ - 6” 32’ - 0” 30’ - 6” 33’ - 6” 30’ - 6”
18” 36’ - 0” 34’ - 0” 32’ - 6” 36’ - 0” 32’ - 6”
20” 38’ - 6” 36’ - 0” 34’ - 6” 38’ - 6” 34’ - 6”
22” 40’ - 6” 38’ - 6” 36’ - 6” 40’ - 6” 36’ - 6”
24” 43’ - 0” 40’ - 6” 38’ - 0” 43’ - 0” 38’ - 0”
* Total floor depth = D500 Joist depth plus slab thickness
• Standard spacing is 4’-1 1/4”
• Live load deflection design standard:
L / 360
PANEL
DEPTH (in.) PANEL (in.) D (in.) S (in.) R (in. x in.)
8 20 4 4 6 x 3
10 20 6 5 7 x 4
12 24 8 6 9 x 5
14 24 9 7 9 1/2 x 6
11 x 5
16 24 10 8 10 1/2 x 6 1/2
13 x 5
18 24 11 8 1/2 11 x 7
12 1/2 x 6
20 24 11 1/2 9 12 x 7
13 x 6
22 24 12 9 1/2 12 x 8
14 x 6
24 24 12 1/2 10 13 x 8
14 x 7
S
D
Design
Slab
Thickness
D500 Joist
Depth
2 1/2” min.
Top of Slab
1”
Cover min.
• Design clear spans, other than those
shown in the above table, require
additional structural review.
• Design > 43’ - 0” require additional
structural design review.
D = MAXIMUM DIAMETER
S = MAXIMUM SQUARE
R = MAXIMUM RECTANGULAR
NOTE: For other configurations, the
maximum limits will be defined
by the joist geometry.
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