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STEEL RAIL. FOR MAIN STAIR GROUND-1 FLOOR

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STEEL RAIL. FOR MAIN STAIR GROUND-1 FLOOR Powered By Docstoc
					                                                                                                                                             12-Nov-11
                                                                  CLIENT: BREAKSTONE HOMES

                                                             PROJECT: BEHAR RESIDENCE

                                                         DESIGN FOR: MAIN STAIR - GROUND TO FIRST FLOOR - WROUGHT IRON

                                                                                                   140 Buttonwood Drive, Key Biscayne, Florida 33149
CA 09550                                                                                     phone: 305/361-9376          e-mail: tabioeng@aol.com



DATA:                                               VALUE          UNIT             TYPE   COMMENTS


STEP 1 - POST SIZE AND SPACING DESIGN

POST TYPE                                        HSS 1-1/2X1-1/2X3/16"
MATERIAL                                         C1010 - ASTM A500 GRADE 'B'
CONCENTRATED LOAD (P)                                      200.00 LB      SPEC.            FBC 2001
UNIFORM LOAD (W)                                            50.00 P/LF    SPEC.            FBC 2001
MINIMUM YIELD STRENGTH Fty                                  42.00 KSI     DATA             ANSI/NAAMM AMP521-01 STANDARDS
DESIGN BENDING STRESS                                       27.72 KSI                      ANSI/NAAMM AMP521-01 STANDARDS
HEIGHT (H)                                                  42.00 INCHES  DATA             DWGS.
POST SPACING (L)                                            48.00 INCHES  DATA             DWGS.
CONCENTRATED LOAD (P)                                      200.00 LB      SPEC.            FBC 2001
UNIFORM LOAD (W)                                            50.00 P/LF    SPEC.            FBC 2001
LENGTH                                                     1.5000 INCHES  DATA             MATERIAL DATA
WIDTH                                                      1.5000 INCHES  DATA             MATERIAL DATA
THICKNESS                                                  0.1875 INCHES  DATA             MATERIAL DATA
AREA                                                       0.9844 IN^2    DATA             MATERIAL DATA
SECTION MODULUS                                            0.3845 IN^3    DATA             MATERIAL DATA
MOMENT OF INERTIA                                          0.2884 IN^4    DATA             MATERIAL DATA
ACTING MOMENT                                            8,400.00 LB-IN                    P*H
REQUIRED SECTION MODULUS FOR POINT LOAD                    0.3030 IN^3    FORMULA          S=M/F
DESIGN CHECK UP                                       PASS

MAXIMUM POST SPACING FOR CONCENTRATED LOAD               266.47   INCHES    FORMULA        Lmax=5*1000*Fb*S/P
MAXIMUM POST SPACING FOR UNIFORM LOAD                    143.06   INCHES    FORMULA        Lmax= SQRT((96*1000*Fb*S)/W)
MAXIMUM CALCULATED POST SPACING                          143.06   INCHES    FORMULA        SMALLER OF BOTH
PROPOSED POST SPACING                                     48.00   INCHES          PASS

STEP 2 - CAP RAIL DESIGN

RAIL SIZE                                      DIXIE CAP 4441                              BY JULIUS BLUM OR APPROVED EQUAL
RAIL MATERIAL                                  C1010 - ASTM A500 GRADE 'B'
CONCENTRATED LOAD (P)                                    200.00 LB      SPEC.              FBC 2001
UNIFORM LOAD (W)                                          50.00 P/LF    SPEC.              FBC 2001
MINIMUM YIELD STRENGTH Fty                                42.00 KSI     DATA
DESIGN BENDING STRESS                                     27.72 KSI
WIDTH                                                    2.2500 INCHES  DATA               REF. 4441 - JULIUS BLUM CATALOG
DEPTH                                                    0.7500 INCHES  DATA               REF. 4441 - JULIUS BLUM CATALOG
THICKNESS                                                SOLID INCHES   DATA               MATERIAL DATA
AREA                                                     0.5940 IN^2    DATA               MATERIAL DATA
WEIGHT                                                   2.1400 PLF     DATA               MATERIAL DATA
SECTION MODULUS                                          0.2580 IN^3    DATA               MATERIAL DATA - COMBINED
MOMENT OF INERTIA                                        0.2910 IN^4    DATA               MATERIAL DATA
ACTING MOMENT                                          2,400.00                            PL/4
REQUIRED SECTION MODULUS FOR CONCENTRATED LOAD           0.0866 IN^3                PASS   S=M/F

STEP 3 - ORNAMENTAL PICKET DESIGN

PICKET TYPE                                      FLAT BAR 1/4"X1"                          ARRANGED ON ELLIPTICAL PATTERN
MATERIAL                                              A 36
UNIFORM LOAD (W)                                           25.00 PSF        SPEC.          FBC 2001 - 1617.4.6.2
MINIMUM YIELD STRENGTH Fty                                 42.00 KSI        DATA
DESIGN BENDING STRESS                                      27.72 KSI
WIDTH                                                   0.75000 INCHES      DATA           JULIUS BLUM CATALOG 17
DEPTH                                                   0.75000 INCHES      DATA           JULIUS BLUM CATALOG 17
THICKNESS                                               0.08300 INCHES      DATA           JULIUS BLUM CATALOG 17
WEIGHT                                                  0.75300 LB          DATA           JULIUS BLUM CATALOG 17
AREA                                                    0.22100 IN^2        DATA           JULIUS BLUM CATALOG 17
MOMENT OF INERTIA                                       0.01700 IN^4        DATA           JULIUS BLUM CATALOG 17
SECTION MODULUS                                         0.04500 IN^3        DATA           JULIUS BLUM CATALOG 17
PICKET SPACING (BETWEEN ELLIPSES)                           3.88 INCHES
LOAD                                                        8.07 PLF        DATA           LOAD*SEPARATION BETWEEN PICKETS
ELLIPSE MINOR AXIS                                          4.00 INCHES
ELLIPSE MAJOR AXIS                                         15.25 INCHES     FORMULA        APPROX.
HALF PERIMETER                                              2.92 FT         FORMULA        PI/4*SQRT(2(H^2+B^2)*2/12
SPAN = HALF PERIMETER                                       2.92 FT                        CONSIDERED AS A BEAM
REACTION AT ENDS                                           11.78 LB         FORMULA        R=WL/2
ACTING MOMENT                                               5.73 FT-LB      FORMULA        M=WL^2/12
ACTING MOMENT IN IN-LB                                     68.77 IN-LB      FORMULA
REQUIRED SECTION MODULUS                                0.00248 IN^3        FORMULA        S=M/Fs
ACTUAL SECTION MODULUS PROVIDED                         0.04500 IN^3              PASS     O.K.

STEP 4 - BOTTOM RAIL DESIGN


   6b86c75e-320c-4aba-a823-03588413155e.xls                                                                                  Mauricio Salazar, P.E.
                                                                   11/12/2011                                                 Florida Reg. #55757
                                                                                                                                                  12-Nov-11
                                                                CLIENT: BREAKSTONE HOMES

                                                           PROJECT: BEHAR RESIDENCE

                                                       DESIGN FOR: MAIN STAIR - GROUND TO FIRST FLOOR - WROUGHT IRON

                                                                                                        140 Buttonwood Drive, Key Biscayne, Florida 33149
CA 09550                                                                                          phone: 305/361-9376          e-mail: tabioeng@aol.com



DATA:                                            VALUE            UNIT             TYPE         COMMENTS


TOP AND BOTTOM HORIZONTAL CORDS                PL3/8"X1-1/4"
RAIL MATERIAL                                      A 36
CONCENTRATED LOAD (P)                                  200.00   LB         SPEC.                FBC 2001
UNIFORM LOAD (W)                                        50.00   P/LF       SPEC.                FBC 2001
ALLOWABLE TENSILE STRENGTH                              27.72   KSI        DATA
WIDTH                                                  1.0000   INCHES     DATA                 MATERIAL DATA
HEIGHT                                                 0.3750   INCHES     DATA                 MATERIAL DATA
THICKNESS                                              0.3750   INCHES     DATA                 MATERIAL DATA
AREA                                                   0.5630   IN^2       DATA                 MATERIAL DATA
WEIGHT                                                 1.9100   PLF        DATA                 MATERIAL DATA
SECTION MODULUS                                        0.0980   IN^3       DATA                 BD^2/3
MOMENT OF INERTIA                                      0.0610   IN^4       DATA                 BD^3/3
ACTING MOMENT                                        2,400.00                                   PL/4
REQUIRED SECTION MODULUS                               0.0866   IN^3               PASS

STEP 5 - WELDING ELECTRODE DESIGN

ALLOYS TO BE WELDED                           C1010 - ASTM A500 GRADE 'B'                       WEAKEST ALLOY USED
PROPOSED WELDING ELECTRODE                         7018
ELECTRODE STRENGTH                                       70.00 KSI
TYPE OF WELDING SPECIFIED                              FILLET
THICKNESS OF WELDING                                     3/16"
ALLOWABLE STRESS PER ASD                                 21.00 KSI                              .3*ELECTRODE STRENGTH
WELD RESISTANCE                                           2.78 KIPS/IN OK                       T=.7071*THICKNESS*Fw




SUMMARY:

POST TYPE                                     HSS 1-1/2X1-1/2X3/16"         C1010 - ASTM A500 GRADE 'B'
RAIL SIZE                                     DIXIE CAP 4441                C1010 - ASTM A500 GRADE 'B'
PICKET TYPE                                   FLAT BAR 1/4"X1"              A 36
TOP AND BOTTOM HORIZONTAL CORDS               HSS 1-1/2X1-1/2X3/16"         C1010 - ASTM A500 GRADE 'B'
TOP AND BOTTOM HORIZONTAL CORDS                PL3/8"X1-1/4"                A 36
WELDING ELECTRODE                                  3/16"       FILLET      7018




   6b86c75e-320c-4aba-a823-03588413155e.xls                                                                                       Mauricio Salazar, P.E.
                                                                  11/12/2011                                                       Florida Reg. #55757

				
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