STEEL NOTES

ALL STEEL SIZES TO BE CONFIRMED

2.
ALL DIMENSIONS DETAILED HAVE BEEN CALCULATED USING THE SPECIFIED STEELWORK.
BY THE ENGINEER.

3.
TO BE READ IN CONJUNCTION WITH THE ARCHITECTS / ARCHITECTURAL DRAWINGS.
4.
IN THE ABSENCE OF A PROJECT SPECIFIC SPECIFICATION THE BASE SPECIFICATION FOR
STRUCTURAL STEELWORK SHALL BE BS EN 1993-1-1 to 10: 'STRUCTURAL USE OF STEELWORK
IN BUILDING' AND THE 'NATIONAL STEELWORK SPECIFICATION' PRODUCED BY THE B.C.S.A.
5.
ALL STEELWORK SHALL COMPLY WITH THE FOLLOWING :-
BS EN 10025 - HOT ROLLED SECTIONS BS EN 10210 PART 1 - HOT ROLLED STRUCTURAL HOLLOW SECTIONS
6.
ALL STEELWORK ERECTION TO BE TO BS 5531 AND TO TOLERANCES SPECIFIED IN THE LATEST
EDITION OF THE 'NATIONAL STRUCTURAL STEELWORK SPECIFICATION FOR BUILDING
CONSTRUCTION'.
7.
DESIGN OF ALL TEMPORARY WORKS, PROPPING AND BRACING SHALL BE THE RESPONSIBILITY OF THE STEELWORK CONTRACTOR.
8.
FABRICATION MUST TAKE INTO CONSIDERATION, DEAD LOAD DEFLECTION, TO ENSURE THE
SPECIFIED ROOF PITCH AFTER CONSTRUCTION.
9.
ALL HOT ROLLED STRUCTURAL STEELWORK (INCLUDING ALL CONNECTION MATERIAL) TO
BE GRADE S355 U.N.O.
10.
ALL REACTIONS (ULTIMATE) SHOWN THUS (**) ARE IN kN. ALL MOMENTS (ULTIMATE)
SHOWN THUS {**} ARE IN kNm. ALL BEAM/COLUMN OFFSETS SHOWN THUS >>** ARE IN mm.
11.
ALL CONNECTIONS SHALL HAVE A MINIMUM OF 2 No BOLTS AND BE DESIGNED FOR A
MINIMUM 75kN (ULTIMATE) REACTION UNLESS NOTED OTHERWISE.
12.
ALL CONNECTIONS TO FABRICATORS DESIGN, TO BE FULL DEPTH END PLATES AND HAVE A
MINIMUM OF 4No. M20 BOLTS, UNLESS OTHERWISE INDICATED.
13.
ALL WELDS ARE TO BE MINIMUM OF 6mm CONTINUOUS FILLET WELD, FULL PROFILE, UNLESS
OTHERWISE INDICATED.
14.
ALL STRUCTURAL BOLTS WILL BE IN THE FORM OF FULLY THREADED SET SCREWS TO BS 3692
(GRADE 8.8) OR BSEN 24017 TS B.C.S.A. RECOMMENDED SIZE RANGE AND WILL BE
PURCHASED FROM QUALITY ASSURED SUPPLIERS.
15.
THE MINIMUM SPECIFICATION FOR BOLTS SHALL BE GRADE 8.8 AND WILL BE ZINC PLATED TO BS1706 : 1990 (ZN2).
16.
ALL BOLTS TO BE IN 2mm CLEARANCE HOLES UNLESS STATED OTHERWISE.
17.
BASE PLATE AND HOLDING DOWN BOLTS TO BE DESIGNED AND DETAILED BY THE
STEELWORK CONTRACTOR UNLESS NOTED OTHERWISE.
18.
HOLDING DOWN BOLTS AND WASHER PLATES ARE TO BE SUPPLIED BY THE STEELWORK
CONTRACTOR UNLESS OTHERWISE NOTED.
19.
HOLDING DOWN BOLTS AND BASE PLATES TO BE GROUTED UP WITH NON-SHRINK GROUT.
20. UNLESS OTHERWISE NOTED IN THE PROJECT SPECIFIC SPECIFICATION, PROTECTION
TREATMENT OF STEELWORK SHALL BE IN ACCORDANCE WITH BRITISH STEEL'S 'PREVENTION
OF CORROSION OF STRUCTURAL STEELWORK' APPROPRIATE SYSTEM. A MINIMUM
STRUCTURAL LIFE OF 50 YEARS AND A FIRST MAJOR MAINTENANCE OF 15 YEARS IS TO BE
ASSUMED.
21. THE STEELWORK CONTRACTOR IS TO ENSURE THAT ANY SHOP OR SITE APPLIED PRIMERS
ARE COMPATIBLE WITH ANY FINISHING, INTUMESCENT OR R.I.W. COATINGS WHICH MAY BE APPLIED BY THE MAIN CONTRACTOR.
22. FOR DETAILS OF FIRE PROTECTION TO COLUMNS REFER TO ARCHITECT'S / ARCHITECTURAL
DRAWINGS.
23. ALL STEELWORK BELOW GROUND LEVEL TO BE ENCASED WITH 100mm MIN CONCRETE
(MIX AS FOR FOUNDATIONS) AND WITH D49 WRAPPING FABRIC AS DIRECTED BY THE
ENGINEER.
24. ALL STEELWORK TO BE ENCASED (EITHER BURIED, ENCASED IN CONCRETE BELOW SLAB
LEVEL OR WHOLLY OR PARTIALLY EMBEDDED WITH EXTERNAL CAVITY WALLS) TO BE GIVEN
TWO COATS OF R.I.W. 'LIQUID ASPHALTIC COMPOUND' ON ALL SIDES THAT ARE TO BE
ENCASED OR EMBEDDED BY THE MAIN CONTRACTOR.
25. THE CONTRACTOR SHALL NOT FORM ANY HOLES THROUGH STEEL MEMBERS OTHER THAN
THOSE FOR CONNECTIONS WITHOUT WRITTEN APPROVAL OF THE ENGINEER.
26. ALL STEELWORK RECEIVING TIMBER WALL PLATES, BEARERS ETC TO BE PRE-DRILLED WITH
12mm Ø HOLES AT 450mm CENTRES, STAGGERED EITHER SIDE OF WEB.
27. ALL PROPRIETARY ITEMS TO BE INSTALLED IN STRICT COMPLIANCE WITH THE
MANUFACTURER'S INSTRUCTIONS AND RECOMMENDATIONS.
28. THE STEELWORK SUB-CONTRACTOR SHALL SUBMIT COPIES OF HIS DRAWINGS TO BOTH THE
ARCHITECT AND ENGINEERS FOR COMMENTS A MINIMUM OF 7 DAYS PRIOR TO
MANUFACTURE.
29. THE DESIGN, FABRICATION AND ERECTION OF THE TRUSS RAFTERS AND ALL OTHER
      TIMBER ROOF MEMBERS SHALL COMPLY WITH BS 5268 : PARTS 2 & 3.
30. THE SUPPLIER SHALL BE SOLELY RESPONSIBLE FOR THE DESIGN OF THE TRUSS
      RAFTERS INCLUDING / EXCLUDING
      ALL BRACING TIMBERS. ADEQUATE CEILING BRACING AND FIXINGS / STRAPPING ARE
      TO BE PROVIDED TO ENSURE
      SUITABLE RESTRAINT IS PROVIDED TO THE HEADS OF ALL WALLS.

31. THE SUPPLIER SHALL SUBMIT TO THE ENGINEER PRIOR TO FABRICATION,
      CALCULATIONS TO SHOW COMPLIANCE WITH THE ENGINEER'S REQUIREMENTS.

32. THE SUPPLIER SHALL PROVIDE ALL NECESSARY BRACING ETC. TO ENSURE THE
      STABILITY OF THE ROOF STRUCTURE DURING ERECTION AND ALL PERMANENT
      BRACING.

33. THE SUPPLIER WILL CHECK ALL BASIC SETTING OUT DIMENSIONS AND PITCHES ON
      SITE PRIOR TO FABRICATION.

34. WHERE SPECIFIED, PRESERVATIVE TREATMENTS TO BE IN ACCORDANCE WITH BS
      5268 : PART 3 : 1985, SECTION 3 AND BS 5268 : PART 5 : 1989.

35. TRUSSES STORED ON SITE SHOULD BE ON FIRM GROUND IN AN UPRIGHT POSITION
      AND STACKING SHOULD BE CARRIED OUT AGAINST A FIRM SUPPORT. THE TRUSSES SHOULD BE SUPPORTED AT DESIGN BEARING POINTS AT SUCH A HEIGHT AS TO ENSURE THAT ANY RAFTER OVERHANGS ARE CLEAR OF THE GROUND. ALL TRUSSES
       SHOULD BE PROTECTED AGAINST INCLEMENT WEATHER.

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