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BM15&BM13 TENSION FLAT ANCHORAGE

BM Series flat anchor used for flat structure output.
Flat shape anchor plate usually has 2-5 holes to lock 15.7MM/15.2MM, behind the anchor plate, there is trumpet shape bolster which used for grouting work, the inside of the trumpet is empty to enable the strand cross through. On the front or back side, there is a bore hole for grouting.

Pre-Stressing Concrete Anchorage Tension Procedure:
I Preparation:
1) Clean the remained concrete inside of the anchor bearing plate, wipe the strand out of rusty and mud.
2)Install anchorage, wedges and located plate.

II Location and installment of tension equipments
1) Get the tension jack ready and put in proper location in spot.
2) Install tool anchor, daub lube oil on outside of tool anchor wedges

III. Tension:
1)Turn on the hydraulic pump supply oil to jack tank slowly, till oil pressure reach up to the set-up value.
2) Measuring the extension length of the strand.
3) Make a data record for tension.

IV. Anchoring:
1) Loose the stop-current valve, let the pressure back to 0 gradually. When the gauge show zero, the anchoring move has been finished.
2) The pump collects the oil back to return way tank, the piston back to the bottom as beginning...
3) Unload jack and located plate.

IX. Seal the end
1) Cutting out the over long remaining strand, seal the anchorage with concrete.
2) Grouting the concrete to the corrugated pipe, seal and grouting shall be within 24 hours.