MEP-Technical Manual CDN 0408.qxd - Hambro
MEP-Technical Manual CDN 0408.qxd - Hambro
MEP-Technical Manual CDN 0408.qxd - Hambro
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METRIC<br />
JOIST DEPTH SELECTION TABLES<br />
Concrete: f’ c = 20 MPa; density = 2 400 kg/m 3<br />
Joist spacing = 1 220 mm<br />
Slab thickness =150 mm<br />
Residential Office Other Loading<br />
Building Building (LL=4,8 kPa)<br />
Dead Load (kPa) 4.36 4.36 4.36<br />
Live Load (kPa) 1.92 2.40 4.80<br />
Total Load (kPa) 6.28 6.76 9.16<br />
SPAN c/c (mm)<br />
3 600<br />
4 300<br />
4 900<br />
5 500<br />
6 100<br />
6 700<br />
7 300<br />
7 900<br />
8 550<br />
9 150<br />
9 750<br />
10 350<br />
10 975<br />
11 575<br />
12 200 *<br />
13 100 *<br />
MDH200 MDH200 MDH300<br />
min = MDH200 min = MDH200 min = MDH200<br />
MDH250 MDH300 MDH300<br />
min = MDH200 min = MDH200 min = MDH200<br />
MDH300 MDH300 MDH350<br />
min = MDH200 min = MDH200 min = MDH200<br />
MDH300 MDH350 MDH350<br />
min = MDH200 min = MDH200 min = MDH200<br />
MDH350 MDH350 MDH350<br />
min = MDH200 min = MDH200 min = MDH200<br />
MDH350 MDH350 MDH400<br />
min = MDH250 min = MDH250 min = MDH250<br />
MDH350 MDH400 MDH400<br />
min = MDH250 min = MDH250 min = MDH250<br />
MDH400 MDH400 MDH400<br />
min = MDH300 min = MDH300 min = MDH300<br />
MDH400 MDH400 MDH500<br />
min = MDH300 min = MDH300 min = MDH300<br />
MDH500 MDH500 MDH500<br />
min = MDH300 min = MDH300 min = MDH300<br />
MDH500 MDH550 MDH500<br />
min = MDH350 min = MDH350 min = MDH350<br />
MDH550 MDH550 MDH550<br />
min = MDH350 min = MDH350 min = MDH350<br />
MDH500 MDH500 MDH550<br />
min = MDH400 min = MDH400 min = MDH400<br />
MDH550 MDH550 MDH550<br />
min = MDH400 min = MDH400 min = MDH400<br />
MDH550 MDH550 MDH550<br />
min = MDH450 min = MDH450 min = MDH450<br />
MDH550 MDH550<br />
min = MDH500 min = MDH500<br />
* Permanent line of cross bridging shall be installed at mid-span.<br />
MDHXXX<br />
: Optimal MD2000 ® Series Joist Depth (mm)<br />
min = MDHXXX : Minimum Depth (mm) Allowed<br />
7