Membrane Covered Roof Water Tanks

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CorGal tanks are available with flexible membrane covers for those applications that do not require a pitched roof and where snow loads are not a concern, however the possible reflection off the roof of the tanks is a concern.

The membrane cover tank consists of corrugated galvanized steel wall sheets with a round flexible membrane that is stretched across the top of the tank opening. The cover is pulled over the top edge of the tank wall and is secured with ropes to hooks that are bolted to the bottom of the top sheet. The membrane cover tanks are equipped with a geotextile preliner and a flexible membrane main liner for water containment.  The membrane covered tanks are pre-engineered for water containment only.

An exterior wind support ring is provided for 21′ diameter models and larger.

The membrane covers are not engineered for any specific sites nor for any live loads. These tanks should not be used in applications with high wind loads nor any snow load.

TANK ACCESS

All tanks having 2 rings (models XX02) or taller have a removable side access panel that is used for interior tank access during construction or for emergency access.

To allows access to inside the tank, the membrane cover must be unlaced and loosened at some point around the side of the tank.

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FLEXIBLE MEMBRANE COVERED TANK SIZES

TANK SPECS & DRAWINGS
MODELDIAMETEREAVE HEIGHTGALLONS
0601-WT-MC6′3’8”700
0602-WT-MC6′7’3”1,400
0603-WT-MC6′10’9”2,200
0604-WT-MC6′14’4”2,900
0605-WT-MC6′17’11”3,700
0606-WT-MC6′21’5”4,400
0801-WT-MC8′3’8”1,200
0802-WT-MC8′7’3”2,500
0803-WT-MC8′10’9”3,900
0804-WT-MC8′14’4”5,200
0805-WT-MC8′17’11”6,500
0806-WT-MC8′21’5”7,900
0901-WT-MC9′3’8”1,500
0902-WT-MC9′7’3”3,200
0903-WT-MC9′10’9”4,900
0904-WT-MC9′14’4”6,600
0905-WT-MC9′17’11”8,300
0906-WT-MC9′21’5”10,000
1201-WT-MC12′3’8”2,700
1202-WT-MC12′7’3”5,700
1203-WT-MC12′10’9”8,700
1204-WT-MC12′14’4”11,700
1205-WT-MC12′17’11”14,700
1206-WT-MC12′21’5”17,700
1501-WT-MC15′3’8”4,200
1502-WT-MC15′7’3”8,900
1503-WT-MC15′10’9”13,500
1504-WT-MC15′14’4”18,300
1505-WT-MC15′17’11”23,000
1506-WT-MC15′21’5”27,700
1801-WT-MC18′3’8”6,000
1802-WT-MC18′7’3”13,000
1803-WT-MC18′10’9”20,000
1804-WT-MC18′14’4”26,000
1805-WT-MC18′17’11”33,000
1806-WT-MC18′21’5”40,000
2101-WT-MC21′3’8”8,000
2102-WT-MC21′7’3”17,000
2103-WT-MC21′10’9”27,000
2104-WT-MC21′14’4”36,000
2105-WT-MC21′17’11”45,000
2106-WT-MC21′21’5”54,000
2401-WT-MC24′3’8”11,000
2402-WT-MC24′7’3”23,000
2403-WT-MC24′10’9”35,000
2404-WT-MC24′14’4”47,000
2405-WT-MC24′17’11”59,000
2406-WT-MC24′21’5”71,000
2701-WT-MC27′3’8”13,000
2702-WT-MC27′7’3”28,000
2703-WT-MC27′10’9”43,000
2704-WT-MC27′14’4”58,000
2705-WT-MC27′17’11”74,000
2706-WT-MC27′21’5”89,000
MODELDIAMETEREAVE HEIGHTGALLONS
3001-WT-MC30′3’8”15,000
3002-WT-MC30′7’3”34,000
3003-WT-MC30′10’9”53,000
3004-WT-MC30′14’4”72,000
3005-WT-MC30′17’11”91,000
3006-WT-MC30′21’5”109,000
3301-WT-MC33′3’8”19,000
3302-WT-MC33′7’3”42,000
3303-WT-MC33′10’9”64,000
3304-WT-MC33′14’4”87,000
3305-WT-MC33′17’11”110,000
3306-WT-MC33′21’5”132,000
3601-WT-MC36′3’8”22,000
3602-WT-MC36′7’3”49,000
3603-WT-MC36′10’9”76,000
3604-WT-MC36′14’4”103,000
3605-WT-MC36′17’11”131,000
3606-WT-MC36′21’5”157,000
3901-WT-MC39′3’8”26,000
3902-WT-MC39′7’3”58,000
3903-WT-MC39′10’9”89,000
3904-WT-MC39′14’4”121,000
3905-WT-MC39′17’11”153,000
3906-WT-MC39′21’5”185,000
4201-WT-MC42′3’8”30,000
4202-WT-MC42′7’3”67,000
4203-WT-MC42′10’9”104,000
4204-WT-MC42′14’4”141,000
4205-WT-MC42′17’11”178,000
4206-WT-MC42′21’5”214,000
4801-WT-MC48′3’8”36,000
4802-WT-MC48′7’3”85,000
4803-WT-MC48′10’9”132,000
4804-WT-MC48′14’4”180,000
4805-WT-MC48′17’11”229,000
4806-WT-MC48′21’5”276,000
6001-WT-MC60′3’8”56,000
6002-WT-MC60′7’3”132,000
6003-WT-MC60′10’9”206,000
6004-WT-MC60′14’4”282,000
6005-WT-MC60′17’11”358,000
6006-WT-MC60′21’5”432,000
7201-WT-MC72′3’8”81,000
7202-WT-MC72′7’3”190,000
7203-WT-MC72′10’9”297,000
7204-WT-MC72′14’4”406,000
7205-WT-MC72′17’11”515,000
7206-WT-MC72′21’5”622,000
75XX-WT-MC75′3’8” – 21’5”–
82XX-WT-MC82′3’8” – 21’5”–
85XX-WT-MC85′3’8” – 21’5”–
90XX-WT-MC90′3’8” – 21’5”–
105XX-WT-MC105′3’8” – 21’5”–
All capacities are rounded.  Actual tank capacities will vary due to location of flanges and structural design.