1964_BUILDING_(CONSTRUCTION)_REGULATIONS — Page 24

B 24

[Subsidiary]

Test load.

Notice as to load. L.N. 294/76.

CAP. 123]

Building (Construction) Regulations

[1985 Ed.

26. (1) The test load for any structure or part of a structure, excepting for piles and foundations, shall be such that the total load during the test includes the full dead load plus 1.4 times the imposed load (not including induced wind load) for which that structure or that part thereof has or should have been designed. This load shall be maintained for a period of 24 hours before removal.

(2) During the test adequate struts strong enough to take the whole of the dead load and test load shall be placed in position leaving a gap under the members to be tested. The test load shall not be applied to a reinforced concrete structure until at least 28 days after the date of concreting.

(3) The structure or that part thereof under test shall be deemed to be satisfactory if all the following conditions are met within their limits-

(a) no structural defects, signs of weakness or faulty construction can be observed; and

(b) the maximum deflection during the test shall not exceed
1
360
of the span (or twice the span for cantilevered members); and

(c) within 24 hours after removal of the applied test load, the recovery of deformation shall be not less than-

(i) in the case of a reinforced concrete or steel framed structure 75 per cent; and

(ii) in the case of a timber structure, 50 per cent,

of the maximum deflection during the test.

(4) The Building Authority may require a re-test of a structure or part of a structure to be carried out with the same loading, and conditions where the recovery is-

(a) in the case of a reinforced concrete or steel framed structure, less than 75 per cent but not less than 50 per cent; or

(b) in the case of a timber structure, less than 50 per cent but not less than 40 per cent.

(5) If on re-test of a structure or part of a structure under paragraph (4) the recovery is at least-

(a) in the case of a reinforced concrete or steel framed structure, 75 per cent; or

(b) in the case of a timber structure, 50 per cent,

of the maximum deflection during the re-test, the structure or part shall be deemed to be satisfactory.

27. (1) In every storey of every building with a designed imposed load (not including wind load) of 5 kPa and over, there shall be exhibited by the owner, at each staircase or at some other appropriate place, permanently and conspicuously, a notice in