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U-Shape Drain

L-Shape Unit

Reinforced Concrete Piles

Precast Concrete Pipes

Box Culvert

STANDARD SIZE U - DRAIN

Standard size U-Drain

STANDARD SIZE U - DRAIN DIMENSIONS & PROPERTIES

						U-Drain		U-Drain with DWF
Nominal Size	B	b	h	tb	td	H	wt	e	c	R	tc	H	Wt
mm x mm	mm	mm	mm	mm	mm	mm	tonnes	mm	mm	mm	mm	mm	tonnes
600 x 300	740	600	300	70	70	370	0.25	70	300	195	95	440	0.32
600 x 450	740	600	450	70	70	520	0.30	70	300	195	95	590	0.37
600 x 600	740	600	600	70	70	670	0.35	70	300	195	95	740	0.42
750 x 300	910	750	300	80	80	380	0.32	80	450	356	105	460	0.41
750 x 450	910	750	450	80	80	530	0.38	80	450	356	105	610	0.47
750 x 600	910	750	600	80	80	680	0.44	80	450	356	105	760	0.53
750 x 750	910	750	750	80	80	830	0.50	80	450	356	105	910	0.59
900 x 300	1060	900	300	80	80	380	0.35	80	450	356	105	460	0.47
900 x 450	1060	900	450	80	80	530	0.41	80	450	356	105	610	0.53
900 x 600	1060	900	600	80	80	680	0.47	80	450	356	105	760	0.59
900 x 750	1060	900	750	80	80	830	0.52	80	450	356	105	910	0.65
900 x 900	1060	900	900	80	80	980	0.58	80	450	356	105	1060	0.71
1200 x 300	1390	1200	300	95	50	395	0.48	225	1075	755	245	620	0.69
1200 x 450	1390	1200	450	95	50	545	0.55	225	1075	755	245	770	0.76
1200 x 600	1390	1200	600	95	50	695	0.62	225	1075	755	245	920	0.83
1200 x 750	1390	1200	750	95	50	845	0.69	225	1075	755	245	1070	0.90
1200 x 900	1390	1200	900	95	50	995	0.76	225	1075	755	245	1220	0.97
1200 x 1050	1390	1200	1050	95	50	1145	0.83	225	1075	755	245	1370	1.04
1200 x 1200	1390	1200	1200	95	50	1295	0.90	225	1075	755	245	1520	0.12
1500 x 600	1700	1500	600	100	100	700	0.75	225	1075	755	250	925	1.13
1500 x 900	1700	1500	900	100	100	1000	0.89	225	1075	755	250	1225	1.28
1500 x 1200	1700	1500	1200	100	100	1300	1.04	225	1075	755	250	1525	1.42
1500 x 1500	1700	1500	1500	100	100	1600	1.19	225	1075	755	250	1825	1.57
1800 x 600	2030	1800	600	115	115	715	0.96	225	1075	755	250	940	1.52
1800 x 900	2030	1800	900	115	115	1015	1.13	225	1075	755	250	1240	1.69
1800 x 1200	2030	1800	1200	115	115	1315	1.30	225	1075	755	250	1540	1.86
1800 x 1500	2030	1800	1500	115	115	1615	1.47	225	1075	755	250	1840	2.04
1800 x 1800	2030	1800	1800	115	115	1915	1.64	225	1075	755	250	2140	2.21

SUPER SIZE U - DRAIN

Super size U-Drain

SUPER SIZE U - DRAIN DIMENSIONS & PROPERTIES

					U-Drain w/o DWF		U-Drain c/w DWF
Nominal Size	B	b	h	tt	H	weight	H	weight
mm x mm	mm	mm	mm	mm	mm	tonnes	mm	tonnes
2100 x 1200	2500	2100	1200	151	1400	2.08	1625	2.86
2100 x 1500	2500	2100	1500	142	1700	2.29	1925	3.08
2100 x 1800	2500	2100	1800	133	2000	2.49	2225	3.27
2100 x 2100	2500	2100	2100	124	2300	2.69	2525	3.46
2400 x 1200	2800	2400	1200	151	1400	2.21	1625	3.16
2400 x 1500	2800	2400	1500	142	1700	2.42	1925	3.37
2400 x 1800	2800	2400	1800	133	2000	2.62	2225	3.57
2400 x 2100	2800	2400	2100	124	2300	2.80	2525	3.75
2400 x 2400	2800	2400	2400	115	2600	2.97	2825	3.92
2700 x 1500	3100	2700	1500	142	1700	2.55	1925	3.67
2700 x 1800	3100	2700	1800	133	2000	2.75	2225	3.87
2700 x 2100	3100	2700	2100	124	2300	2.93	2525	4.05
2700 x 2400	3100	2700	2400	115	2600	3.11	2825	4.22
2700 x 2700	3100	2700	2700	106	2900	3.26	3125	4.38
3000 x 1500	3400	3000	1500	142	1700	2.69	1925	3.97
3000 x 1800	3400	3000	1800	133	2000	2.88	2225	4.17
3000 x 2100	3400	3000	2100	124	2300	3.07	2525	4.35
3000 x 2400	3400	3000	2400	115	2600	3.24	2825	4.52
3000 x 2700	3400	3000	2700	106	2900	3.39	3125	4.68
3000 x 3000	3400	3000	3000	98	3200	3.55	3425	4.83
3300 x 1500	3700	3300	1500	142	1700	2.82	1925	4.27
3300 x 1800	3700	3300	1800	133	2000	3.02	2225	4.46
3300 x 2100	3700	3300	2100	124	2300	3.20	2525	4.65
3300 x 2400	3700	3300	2400	115	2600	3.37	2825	4.82
3300 x 2700	3700	3300	2700	106	2900	3.53	3125	4.97
3300 x 3000	3700	3300	3000	98	3200	3.68	3425	5.13
3600 x 1800	4000	3600	1800	133	2000	3.15	2225	4.76
3600 x 2100	4000	3600	2100	124	2300	3.33	2525	4.94
3600 x 2400	4000	3600	2400	115	2600	3.50	2825	5.11
3600 x 2700	4000	3600	2700	106	2900	3.66	3125	5.27
3600 x 3000	4000	3600	3000	98	3000	3.81	3425	5.42

FEATURES OF ALLIANCE PRECAST INDUSTRIES (API)

API U-Drains are available in both Standard sizes (for widths between 600mm and 1800mm) and Super sizes (for widths between 2100mm and 3600mm).

API U-Drains are available both with and without Dry Weather Flow (DWF) Channels.

Easy handled and laid, API U-Drain allow for fast construction of waterways / open flow channels using high quality factory cast units with a minimum of wet concrete works.

DESIGN CONSIDERATIONS:

1. API U-Drains are designed in accordance with the requirement of BS 8110 with the following concrete cover to reinforcement: a) Standard size U-Drains : 25mm cover
following concrete cover to reinforcement: b) Super size U-Drains : 30mm cover
2. API U-Drains are made from high strength concrete with a 28 day characteristic
2. strength of 40 MPa.
3. API U-Drains are designed for the standard load conditions as shown below:

4. For other loading conditions or U-Drain size not shown in the tables here, please
4. contact our Technical Marketing Department for a special design.
5. 50mm diameter weepholes are provided for drainage of the retained soil which, when
5. combined with the butt jointed units, prevent the build up of hydrostatic pressures.
5. As such, the design does not take into consideration of hydrostatic pressures.The 5. 5. backfill material adjacent to wall should be granular type of soil for better drainage.

JOINTING:

API U-Drains are supplied with plan joints in standard length of 1 meter. Where necessary, cement mortar is normally used to fill the gap between U-Drains Units.

HANDLING:

The weepholes provided in the U-Drains units double up as lifting holes for handling.
A spreader beam should be used when lifting the units to avoid crack in the legs (See figure)

LAYING:

For most installations, API-U Drains may be laid on sand bedding. However, in bad ground, it may be necessary to excavate deeper and place a layer of hand core before placing the sand bedding as provide piled foundation.

STACKING:

All inverts should be stacked uniformly on level ground and supported with timber bearers at each end.

Is is our policy to continuously review and improve products and their design.
Information in this webpage is therefore subject to change without prior notice.

	API was accredited with SIRIM Product Certification for its Box Culvert in December 1999 and the Quality System MS ISO 9002 by SIRIM in February 2001.

	The upgrading of the Quality System to MS ISO 9001:2000 was successfully implemented in 2003.
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	Putrajaya
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	Monash University Malaysia
	SILK Highway
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	KASEH Highway
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	Guthrie Bukit Jelutong
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..Concept & development by Creative Compass.