Design Characteristics

Dimensions

Length

3500.0 mm to 15000.0 mm

Depth

250.0 mm to 900.0 mm

Deflection

180 to 1440 of span (1/Δ)

Panels

4 to 30 across the joist

Panel Types

Variable • Warren • Pratt

Panel Lengths

Variable • Equal | Single End Panel, then Pairs, with 1 to 4 centre panels

Joist Types

Roof • Floor • Classroom • Other (allows setting of panel point load)

Top Chord extension of 100 mm each end
Bottom Chord extension of 150 mm each end

Loads

In all cases multiple loads can be added. For example with the additional uniform loads you can have two live loads. Similarly you can add multiple end moments.

Uniform Loads

Load

0.0 kN/m to 50.0 kN/m

Types

Dead • Live • Snow

Uniform loads can have the following combinations: Dead and Live or Dead and Snow depending of Joist Type.

Uniform Uplift

Load

0.0 kN/m to 50.0 kN/m

Types

Wind

Point

Load

-150.0 kN to 150.0 kN

Location

0 mm to design length of joist

Types

Dead • Live

Reinforcement

Reinforced (No Local Bending Allowance, {NLBA}), Unreinforced (Local Bending Allowance {LBA})

Point loads with a local bending allowance (LBA) for the purpose of moment distribution are considered to be sitting in the middle of the panel if mid panel lock is on.

An unlimited number of point loads can be applied.

Moving Point

Load

0 kN to 150.0 kN

Types

Dead • Live

Reinforcement

Moving point loads must have reinforcement.

Snow Pileup

Load

0.0 kN/m to a maximum of 50.0 kN/m

Minimum length of 1000 mm and maximum of 10000 mm.

Left facing or right facing with the load's face anywhere on the joist.

Types

Snow

End Moment

Load

-300.0 kN•m to a maximum of 300.0 kN•m.

Single ended or both ends, with different loads each end.

Both reversible and non-reversible.

Types

Dead • Live • Wind • Seismic

These loads can be combined with the uniform loads that are entered on the main web page.

Strip Load

Load

0.0 kN/m to a maximum of 50.0 kN/m.

Can be anywhere along the joist, to the entire length of the joist.

Or strip load lengths a + b + cwhere b is the length of the strip load must be less than the design length of the joist.

Types

Dead • Live

These loads can be combined with the uniform loads that are entered on the main web page.

Additional Uniform Loads

Load

0.0 kN/m to 50.0 kN/m

Types

Dead • Live • Snow • Wind • Storage • Liquid • Soil

These loads can be combined with the uniform loads that are entered on the main web page.

An unlimited number of additional uniform loads can be applied.

Materials

Rods

Rods are used in the web of the joist. Listed below are the rods available to this program.

Rod characteristics are from calculation.

Fy of 300 Mpa.

No.	Diameter (mm)	Wt. (kg/m)	Area (mm2)	R (mm)
1	12.7000	0.99	126.68	3.1750
2	14.2875	1.26	160.33	3.5719
3	15.8750	1.55	197.93	3.9688
4	17.4625	1.88	239.50	4.3656
5	19.0500	2.24	285.02	4.7625
6	20.6375	2.63	334.51	5.1594
7	22.2250	3.05	387.95	5.5563
8	23.8125	3.50	445.35	5.9531
9	25.4000	3.98	506.71	6.3500
10	26.9875	4.49	572.03	6.7469
11	28.5750	5.03	641.30	7.1437
12	30.1625	5.61	714.54	7.5406
13	31.7500	6.22	791.73	7.9375

Angles

Hot rolled angles are used in the chords of the joist. Listed below are the angles available to this program.

Angle properties are from calculation.

Fy of 380 Mpa.

No.	Long Leg (mm)	Short Leg (mm)	Thickness (mm)	Wt. (kg/m)	Area (mm2)	Eff. Area (mm2)	Ixx (106 mm4)	Rxx (mm)	Rzz (mm)	s1 (103 mm3)	s2 (103 mm3)	dt (mm)	Ryy (mm)
1	25.4000	25.4000	3.1750	2.37	302.42	302.42	0.018	7.733	9.743	2.41	1.01	7.51	15.88	16.57	17.28	17.99	18.71	19.44	20.17	20.90	21.64	22.39	23.13	23.88	24.63	27.67	30.73	33.81	40.02	46.27	52.54	58.82	71.43	84.07
2	31.7500	31.7500	3.1750	3.01	383.06	383.06	0.037	9.773	12.331	4.02	1.62	9.11	18.29	18.96	19.65	20.34	21.04	21.75	22.46	23.17	23.90	24.62	25.35	26.09	26.83	29.80	32.82	35.86	42.01	48.21	54.44	60.70	73.26	85.87
3	38.1000	38.1000	3.1750	3.64	463.71	393.54	0.065	11.815	14.920	6.05	2.36	10.70	20.74	21.40	22.07	22.74	23.42	24.11	24.81	25.51	26.21	26.92	27.64	28.36	29.08	32.01	34.98	37.98	44.06	50.21	56.40	62.62	75.13	87.70
4	31.7500	31.7500	4.7625	4.39	559.47	559.47	0.051	9.565	12.029	5.29	2.32	9.68	18.66	19.35	20.04	20.74	21.45	22.16	22.88	23.61	24.33	25.07	25.80	26.54	27.28	30.28	33.30	36.36	42.52	48.72	54.96	61.23	73.80	86.41
5	50.8000	50.8000	3.1750	4.91	625.00	393.54	0.158	15.906	20.101	11.39	4.28	13.88	25.73	26.36	27.00	27.64	28.30	28.96	29.62	30.30	30.97	31.66	32.35	33.04	33.74	36.57	39.45	42.38	48.32	54.36	60.46	66.61	79.00	91.47
6	38.1000	38.1000	4.7625	5.34	680.44	680.44	0.092	11.600	14.614	8.12	3.41	11.27	21.10	21.76	22.44	23.12	23.81	24.51	25.21	25.92	26.63	27.35	28.07	28.79	29.52	32.46	35.45	38.46	44.56	50.72	56.92	63.15	75.67	88.24
7	44.4500	44.4500	4.7625	6.29	801.41	801.41	0.149	13.638	17.202	11.59	4.72	12.86	23.56	24.21	24.87	25.54	26.22	26.90	27.58	28.28	28.98	29.68	30.39	31.10	31.81	34.71	37.65	40.62	46.65	52.76	58.92	65.11	77.57	90.10
8	50.8000	50.8000	4.7625	7.24	922.38	885.46	0.227	15.680	19.791	15.69	6.24	14.46	26.05	26.69	27.34	27.99	28.65	29.32	29.99	30.67	31.36	32.05	32.74	33.44	34.14	36.99	39.89	42.83	48.79	54.85	60.96	67.11	79.52	92.00
9	63.5000	63.5000	4.7625	9.14	1164.31	885.46	0.455	19.768	24.971	25.80	9.92	17.64	31.08	31.70	32.32	32.96	33.59	34.24	34.89	35.55	36.21	36.88	37.55	38.23	38.91	41.67	44.50	47.36	53.20	59.14	65.16	71.24	83.51	95.90
10	50.8000	50.8000	6.3500	9.50	1209.67	1209.67	0.289	15.466	19.486	19.25	8.09	15.03	26.39	27.03	27.69	28.35	29.02	29.69	30.37	31.06	31.75	32.45	33.15	33.85	34.56	37.42	40.34	43.29	49.27	55.33	61.46	67.62	80.04	92.53
11	76.2000	76.2000	4.7625	11.04	1406.25	885.46	0.801	23.860	30.152	38.46	14.45	20.82	36.16	36.76	37.36	37.98	38.60	39.23	39.86	40.50	41.14	41.79	42.45	43.10	43.77	46.46	49.21	52.01	57.73	63.56	69.49	75.49	87.63	99.91
12	63.5000	63.5000	6.3500	12.03	1532.26	1532.26	0.585	19.545	24.662	32.14	12.93	18.21	31.39	32.02	32.65	33.29	33.93	34.59	35.24	35.91	36.57	37.25	37.93	38.61	39.30	42.08	44.92	47.79	53.65	59.61	65.64	71.73	84.02	96.42
13	76.2000	76.2000	6.3500	14.56	1854.83	1574.16	1.036	23.631	29.840	48.41	18.90	21.40	36.45	37.05	37.67	38.29	38.92	39.55	40.19	40.84	41.49	42.14	42.80	43.46	44.13	46.84	49.61	52.42	58.16	64.02	69.96	75.97	88.12	100.42
14	63.5000	63.5000	7.9375	14.84	1890.12	1890.12	0.706	19.333	24.357	37.61	15.80	18.79	31.71	32.34	32.98	33.63	34.28	34.94	35.60	36.27	36.95	37.63	38.31	39.00	39.69	42.49	45.34	48.23	54.11	60.08	66.12	72.22	84.53	96.93
15	88.9000	88.9000	6.3500	17.09	2177.42	1574.16	1.673	27.721	35.021	68.08	26.01	24.58	41.53	42.13	42.73	43.33	43.95	44.57	45.19	45.82	46.45	47.09	47.74	48.39	49.04	51.69	54.40	57.15	62.78	68.53	74.39	80.31	92.34	104.52
16	76.2000	76.2000	7.9375	18.00	2293.34	2293.34	1.257	23.411	29.533	57.20	23.18	21.97	36.75	37.36	37.98	38.61	39.24	39.88	40.53	41.18	41.84	42.50	43.16	43.83	44.50	47.23	50.01	52.84	58.60	64.47	70.43	76.44	88.62	100.92
17	101.6000	101.6000	6.3500	19.62	2499.99	1574.16	2.530	31.813	40.203	91.16	34.26	27.76	46.64	47.22	47.81	48.41	49.01	49.62	50.23	50.84	51.47	52.09	52.72	53.36	54.00	56.59	59.25	61.95	67.48	73.14	78.90	84.75	96.64	108.71
18	88.9000	88.9000	7.9375	21.17	2696.57	2459.62	2.039	27.495	34.711	81.04	31.98	25.16	41.82	42.42	43.02	43.64	44.26	44.88	45.51	46.15	46.79	47.43	48.08	48.73	49.39	52.06	54.78	57.55	63.20	68.97	74.84	80.78	92.82	105.02
19	76.2000	76.2000	9.5250	21.37	2721.77	2721.77	1.465	23.199	29.229	64.98	27.30	22.54	37.05	37.68	38.30	38.94	39.58	40.23	40.88	41.53	42.19	42.86	43.53	44.20	44.88	47.63	50.42	53.26	59.04	64.93	70.90	76.92	89.12	101.43
20	88.9000	88.9000	9.5250	25.16	3205.64	3205.64	2.385	27.277	34.404	92.70	37.76	25.73	42.11	42.72	43.33	43.95	44.57	45.21	45.84	46.48	47.13	47.78	48.43	49.09	49.75	52.43	55.17	57.95	63.62	69.41	75.29	81.25	93.31	105.52
21	101.6000	101.6000	9.5250	28.96	3689.51	3541.85	3.628	31.360	39.582	125.49	49.92	28.91	47.19	47.79	48.39	49.00	49.61	50.23	50.85	51.47	52.11	52.74	53.38	54.03	54.68	57.31	59.99	62.72	68.29	73.99	79.78	85.66	97.59	109.69
22	152.4000	101.6000	7.9375	30.66	3906.24	2459.62	3.476	29.832	42.355	149.16	44.40	23.31	73.90	42.63	75.09	43.78	76.30	44.95	77.52	46.15	78.75	47.37	79.99	48.62	81.25	51.81	86.38	57.12	94.36	68.27	105.40	79.88	122.56	103.88
							9.495	49.303	42.355	194.95	91.57	48.71	42.06	74.50	43.20	75.70	44.36	76.91	45.55	78.13	46.76	79.37	47.99	80.62	49.24	83.79	54.43	89.01	62.62	99.83	74.03	111.05	91.79	134.28
23	127.0000	127.0000	7.9375	30.66	3906.24	2459.62	6.177	39.766	50.253	178.04	66.92	34.69	57.15	57.72	58.30	58.88	59.47	60.06	60.66	61.26	61.87	62.48	63.09	63.71	64.33	66.86	69.43	72.06	77.44	82.95	88.57	94.29	105.94	117.81
24	101.6000	88.9000	12.7000	35.45	4516.12	4516.12	3.156	26.437	35.568	124.27	49.71	25.40	49.32	41.93	50.56	43.17	51.82	44.44	53.09	45.72	54.38	47.03	55.68	48.35	57.00	51.72	62.41	57.27	70.81	68.78	82.39	80.66	100.27	104.98
							4.431	31.324	35.568	139.56	63.44	31.75	41.32	49.94	42.55	51.19	43.80	52.45	45.08	53.73	46.37	55.03	47.69	56.34	49.02	59.68	54.47	65.17	62.97	76.55	74.69	88.29	92.75	112.40
25	127.0000	127.0000	9.5250	36.56	4657.25	3541.85	7.280	39.536	49.941	206.36	79.36	35.28	57.41	57.99	58.57	59.16	59.75	60.35	60.95	61.56	62.17	62.78	63.40	64.02	64.65	67.19	69.78	72.42	77.82	83.35	88.99	94.72	106.39	118.28
26	152.4000	101.6000	9.5250	36.56	4657.25	3541.85	4.083	29.609	42.004	170.87	52.54	23.89	74.19	42.90	75.39	44.06	76.60	45.25	77.82	46.46	79.06	47.69	80.31	48.95	81.58	52.16	86.73	57.50	94.74	68.70	105.81	80.35	123.01	104.38
							11.212	49.067	42.004	227.46	108.75	49.29	42.33	74.79	43.47	75.99	44.65	77.21	45.85	78.44	47.07	79.69	48.32	80.94	49.58	84.13	54.81	89.37	63.03	100.23	74.48	111.47	92.27	134.75
27	177.8000	101.6000	9.5250	40.36	5141.12	3541.85	4.247	28.742	40.863	192.22	53.42	22.09	88.08	41.00	89.28	42.15	90.50	43.32	91.73	44.52	92.97	45.74	94.22	46.99	95.48	50.19	100.61	55.51	108.55	66.70	119.50	78.36	136.49	102.41
							17.117	57.701	40.863	284.36	145.54	60.19	40.44	88.68	41.57	89.89	42.73	91.11	43.92	92.35	45.13	93.59	46.36	94.85	47.62	98.03	52.82	103.23	61.04	113.98	72.49	125.10	90.29	148.10
28	152.4000	152.4000	9.5250	44.16	5624.99	3541.85	12.809	47.719	60.304	307.66	115.64	41.63	67.67	68.24	68.81	69.38	69.96	70.54	71.13	71.72	72.31	72.91	73.51	74.12	74.73	77.20	79.72	82.28	87.53	92.92	98.42	104.02	115.46	127.13
29	127.0000	127.0000	12.7000	48.11	6129.02	6129.02	9.365	39.090	49.323	257.09	103.40	36.43	57.95	58.54	59.13	59.73	60.33	60.94	61.55	62.16	62.78	63.41	64.03	64.66	65.30	67.87	70.49	73.15	78.59	84.16	89.83	95.59	107.30	119.22
30	152.4000	152.4000	12.7000	58.24	7419.34	6296.62	16.573	47.262	59.681	387.27	151.20	42.79	68.18	68.76	69.33	69.92	70.50	71.10	71.69	72.29	72.89	73.50	74.11	74.72	75.34	77.84	80.38	82.97	88.26	93.69	99.22	104.85	116.33	128.04
31	152.4000	152.4000	15.8750	72.01	9173.37	9173.37	20.110	46.822	59.066	457.64	185.42	43.94	68.72	69.30	69.89	70.48	71.07	71.67	72.27	72.88	73.49	74.10	74.72	75.34	75.96	78.49	81.06	83.67	89.00	94.46	100.03	105.68	117.20	128.95
32	203.2000	203.2000	12.7000	78.50	9999.98	6296.62	40.482	63.626	80.405	729.26	274.10	55.51	88.74	89.30	89.86	90.42	90.98	91.55	92.12	92.70	93.28	93.86	94.45	95.03	95.63	98.02	100.45	102.93	107.99	113.19	118.49	123.90	134.95	146.27
33	203.2000	203.2000	25.4000	151.94	19354.80	19354.80	74.075	61.865	77.944	1232.26	517.70	60.11	90.80	91.38	91.97	92.56	93.15	93.74	94.34	94.94	95.55	96.15	96.76	97.37	97.99	100.47	102.99	105.55	110.75	116.07	121.49	127.00	138.23	149.69
34	304.8000	304.8000	25.4000	232.97	29677.36	25186.49	265.160	94.524	119.362	3098.14	1209.60	85.59	131.86	132.42	132.97	133.53	134.09	134.66	135.22	135.79	136.36	136.94	137.51	138.09	138.67	141.01	143.38	145.78	150.67	155.67	160.76	165.94	176.53	187.38