(a) Guide Rails
Required.
All elevators and their counterweights shall be provided with
guide rails.
EXCEPTION: Existing counterweights running in
boxes.
(b) Material.
Guide rails, guide rail brackets, rail clips, fishplates, and
their fastenings
shall be of steel or other metals conforming
to the requirements of this section.
EXCEPTIONS:
1.
Where steel may present an accident hazard, as in chemical or explosive plants,
guide rails may be of selected wood or other suitable nonmetallic materials
provided the rated speed of the car does not exceed 150 feet per
minute.
2. Existing elevators
originally installed with wood guide rails.
(c) Requirements for Steel. Steel where used,
shall conform to the requirements of Design Section
3109(b).
(d) Requirements for Metals Other Than Steel.
Metals, other than steel, may be used provided the factor of safety is not less
than, and the deflections not more than, the values specified in Design Section
3109,
and provided that
cast iron is not used.
(e)
Rail Section.
(1) Guide rails shall be
T-section, conforming to the nominal weights and dimensions shown in Figure No.
3030 E1 and Table 3030 E1.
EXCEPTION:
Other approved shapes may be used subject to the
requirements of Design Section
3109(c).
Click
here to view image
FIGURE 3030 E1
T-Section Rail
(2) The cross section of existing or
replacement wood guides shall be not less than those given in Table 3030 E2.
The guides shall be of clear grain maple or its equivalent.
TABLE 3030 E1--STEEL GUIDE RAILS
Nominal Wt. |
|
|
Per Foot |
|
Nominal Dimension in
Inches
|
in
Lbs. |
A |
|
B |
C |
D |
E |
8.......................... |
2
7/16
|
3 ½
|
5/8 |
1 ¼
|
5/16 |
11.......................... |
3 ½
|
4 ½
|
5/8 |
1 ½
|
5/16 |
12.......................... |
3 ½
|
5 |
5/8 |
1 ¾
|
5/16 |
15.......................... |
3 ½
|
5 |
5/8 |
1
31/32
|
½
|
18 ½ .......................... |
4 ¼
|
5 ½
|
¾
|
1
31/32
|
½
|
22 ½ .......................... |
4
3/64
|
5 ½ |
1 1/8 |
2 |
9/16 |
30.......................... |
5 |
5 ½ |
1 ¼
|
2 ¼
|
11/16 |
TABLE 3030 E2--WOOD GUIDE RAILS
Maximum Total Weight Per Pair of Guide
Rails |
Cross Section of Each Guide Rail in
Inches |
3,000.......................... |
1
½ x 1 ¾ |
5,000.......................... |
1 7/8 x 2
¼ |
8,000.......................... |
2
¼ x 2 ¼ |
10,000.......................... |
2 5/8 x
2 ¾ |
14,000.......................... |
4 x 5
¼ |
16,000.......................... |
5 x
7 |
(f) Maximum Load on Rails in Relation to the
Bracket Spacing. The maximum load on rails in relation to the bracket spacing
shall be the smallest of the two values established by Sections
3030(f) (1),
3030(f) (2), and
3030(f) (3).
(1) Where a single car or counterweight
safety is used, the maximum suspended weight of the car and its rated load, or
the maximum suspended weight of the counterweight, including the weight of any
compensating ropes or chains and of any traveling cables suspended therefrom,
per pair of guide rails, shall not exceed the maximum specified in Figure No.
3030 F1 for the size of rail and the bracket spacing used.
EXCEPTION: The bracket spacing may exceed the values
specified in Figure 3030 F1 for a counterweight with a safety device or for a
given weight of car plus its rated load per pair of guide rails,
provided:
1. The guide rail is
reinforced; and
2. The moment of
inertia of a single reinforced rail, about an axis (I-I) parallel to the base
of the rail, shall be not less than that required by Figure 3109 D for the
total weight per pair of guide rails at the bracket spacing
used.
(2) Where the car
or counterweight is provided with two safety devices (duplex safety), the loads
specified in Figure No. 3030 F1 may be increased by the factors specified in
Table No. 3030 F2.
(3) The weight
of the counterweight and the bracket spacing for each rail size shall not
exceed the values determined from Figures 3030 F3 A, 3030 F3 B, and 3030 F3 C
or for a counterweight with a safety the values determined from Figure 3030 F1,
whichever is most restrictive. In no case shall bracket spacing exceed 16 feet.
FIGURE 3030 F1
Maximum Weight of Car with Rated Load or of
Counterweight with Safety for a Pair of Guide Rails as specified in Section
3030(f)(1).
Click
here to view image
TABLE NO. 3030 F2
Load Multiplying Factor for Duplex
Safeties
Vertical Distance Between Safeties in
Feet |
Multiple Load in Figure 3030 F1 |
18 or
more.......................... |
..........................2.0 |
15.......................... |
..........................1.83 |
12.......................... |
..........................1.67 |
9.......................... |
..........................1.50 |
Click
here to view image
FIGURE 3030 F3A
MAXIMUM WEIGHT OF COUNTERWEIGHTS AND BRACKET
SPACING SPECIFIED IN 3030 (f) (3)
Click
here to view image
FIGURE 3030 F3B
MAXIMUM WEIGHT OF COUNTERWEIGHTS AND BRACKET
SPACING SPECIFIED IN 3030 (f) (3)
Click
here to view image
FIGURE 3030 F3C
MAXIMUM WEIGHT OF COUNTERWEIGHT AND BRACKET
HEIGHT SPACING SPECIFIED IN SECTION
3030 (f) (4)
FIGURE 3030 F4
MAXIMUM COUNTERWEIGHT AND BRACKET HEIGHT
SPECIFIED IN SECTION
3030 (f) (4)
Click
here to view image
(4)
Where the spacing between
counterweight rail brackets tied to the building exceeds 10 feet, intermediate
tie brackets, not required to be tied to the structure, shall be added so the
distance between adjacent brackets is not more than 7 feet.
EXCEPTIONS:
(1)
Existing elevators in which the counterweight rail guiding system complies with
Section
200 of ANSI A17.1-1971.
(2) A period of seven years from October 6,
1975 will be allowed for counterweight rails existing on this date to comply
with the requirements of Section
3030(f)(4).
(5) The maximum bracket height and minimum
section modulus of the supporting leg of counterweight rail support brackets
shall be determined from Figure 3030(F)(4) using the weight of the
counterweight.
(A) Where gussets or diagonal
struts are used, the bracket height shall be considered as the unsupported
length of the bracket leg measured from the centerline of the rail.
(B) Where tie rods are used to tie the legs
of the brackets together to increase the effective section modulus, the tie
rods that are located across the outer ends of the brackets shall be guarded
unless located more than 7 inches from the edge of the car
top.
(6) The maximum
bracket height and minimum section modulus of intermediate tie brackets for
counterweight rails shall be determined from figure 3030(F)(4) using 1/3 the
weight of the counterweight.
EXCEPTION: The counterweight guide systems of elevators
need not comply with Section
3030(f)(3),
Section 3030(f)(4),
Section 3030(f)(5) and
Section 3030(f)(6) where
proper certification to the Division of Industrial Safety has been made by an
engineer qualified under the Civil and Professional Engineers Act that the
guide system has been designed and built to withstand the seismic forces for
which the building was designed.
(g) Stresses and Deflections. The stresses
and deflections in a guide rail or in a rail and its reinforcement shall not
exceed those specified in Design Section
3109(a)(1), nor
shall the deflections in the brackets and fastenings exceed those specified in
Design Section
3109(a)(2).
(h) Guide Rail Guiding Surfaces. Guide rails
shall have finished guiding surfaces.
(i) Rail Joints and Fishplates.
(1) Metal guide rails shall be joined
together by fishplates of such design and strength as to withstand the forces
specified in Design Section
3109(a) within the
deflection limits specified.
(2)
The joints of metal guide rails shall conform to the following requirements:
(A) The ends of the rails shall be accurately
machined with a tongue and matching groove centrally located in the
web.
(B) The backs of the rail
flanges shall be accurately machined, in relation to the rail guiding surfaces,
to a uniform distance front to back of the rails to form a flat surface for the
finished fishplates.
(C) The ends
of each rail shall be bolted to the fishplates with not fewer than 4
bolts.
(D) The width of the
fishplate shall be not less than the width of the back of the rail.
(E) The thickness of the fishplates and the
diameter of the bolts for each size of guide rail shall be not less than
specified in Table No. 3030 I2.
(F)
The diameter of bolt holes shall not exceed the diameter of the bolts by more
than
1/
16 inch
for guide rails nor 1/8inch for fishplates.
TABLE NO. 3030 I2
Minimum Thickness of Fishplates and Minimum
Diameter of Fastening Bolts
Nominal Weight of Guide Rail in Pounds
Per Foot |
Minimum Thickness of Fishplates
In Inches |
Minimum Diameter Of Bolts In
Inches |
8.......................... |
9/16
|
|
½ |
11.......................... |
11/16
|
|
5/8 |
12.......................... |
11/16
|
|
5/8 |
15.......................... |
11/16
|
|
5/8 |
18 ½ .......................... |
13/16
|
|
¾ |
22 ½ .......................... |
13/16
|
|
¾ |
30.......................... |
15/16
|
|
¾ |
(j) Overall Length of Guide Rails.
The top and bottom ends of each run of guide rail shall be so located
in relation to the extreme positions of travel of the car and counterweight
that the car and counterweight guiding members cannot travel beyond the ends of
the guide rails. This shall mean from the bottom of the pit to the
underside of the overhead slab or beams.
(k) Guide Rail Brackets and Building
Supports.
(1) The building construction
forming the supports for the guide rail brackets shall be of such design as to:
(A) Safely withstand the application of the
car or counterweight safety when stopping the car and its rated load or the
counterweight.
(B) Withstand the
forces specified in Design Section
3109(a) within the
deflection limits specified.
Where necessary, the building construction shall be
reinforced to provide adequate support for the guide rails.
NOTE: Hoistway enclosure walls of brick, terra cotta,
and similar materials, used in buildings of steel and concrete construction,
are usually insufficient in strength to form by themselves adequate supports
for the guide rails.
(C)
Withstand seismic forces created by accelerations of 0.5 g horizontally acting
on the car and/or counterweight in their most adverse position in relation to
any bracket without deflecting more than 1/4" and without exceeding 88% of the
yield strength of the material used.
(2) Guide rail brackets shall be secured to
their supporting structure by means of bolts, rivets, or by welding to
withstand forces described in Section
3030(k)(1)(C).
Fastening bolts and bolt holes in brackets and their supporting beams shall
conform to the requirements of Section
3030(z). Welding
shall conform to Section
3033(g).
(3) Bracket fastening to building structures
designed to provide controlled movement between the brackets and the building
shall be of a type acceptable to the Division and shall be of a design
supported by engineering calculations.
(l) Fastening of Guide Rails to Rail
Brackets.
(1) Guide rails shall be secured to
their brackets by clips or by bolts.
(2) The size of bolts used for fastening the
guide rails or rail clips to the brackets shall be not less than specified in
Table No. 3030 L2.
TABLE NO. 3030 L2
Minimum size of Rail Fastening Bolts
Nominal Weight of Guide Rail in Pounds
Per Foot |
Minimum Diameter of Bolts in
Inches |
8.......................... |
..........................
½ |
11.......................... |
..........................
5/8 |
12.......................... |
..........................
5/8 |
15.......................... |
..........................
5/8 |
18 ½
.......................... |
.......................... 5/8 |
22 ½
.......................... |
.......................... ¾ |
30.......................... |
..........................
¾ |
(3) The diameter of holes or the width of
slots for fastening bolts shall not exceed the diameter of the bolt by more
than
1/16 inch.
Where slots are used for adjustment of the distance between guide rails, the
brackets shall be secured in their final position by a bolt not less than 3/8
inch diameter or by welding.
Notes
Cal. Code Regs. Tit. 8, §
3030
1.
Amendment filed 9-5-75; effective thirtieth day thereafter (Register 75, No.
36).
2. Amendment of subsection (k)(2) filed 6-23-77; effective
thirtieth day thereafter (Register 77, No. 26).
3. Amendment of
subsections (f) and (k), Figure 3030 F1, Figure 3030 F2, Figure 3030 F3A,
Figure 3030 F3B, Figure 3030 F3C, and Table 3030 F4 which were filed 9-5-75
(Register 75, No. 36), was approved by the Building Standards Commission
3-26-76. History note printed in Register 78, No. 30 for technical
reasons.
4. Repealer of subsections (f)(3)(A), (f)(3)(B), Table 3030
F4, (f)(4) and new subsections (f)(4), (f)(5) and (f)(6) filed 12-22-78;
effective thirtieth day thereafter (Register 79, No. 1).
5.
Editorial correction of subsection (b) and Table 3030 E1 (Register 95, No.
26).
6. Change without regulatory effect amending subsection (e)(1)
to provide more legible illustration in Figure 3030 E1 filed 5-1-2009 pursuant
to section 100, title 1, California Code of
Regulations (Register 2009, No. 18).
Note: Authority cited: Section
142.3, Labor
Code.
1. Amendment
filed 9-5-75; effective thirtieth day thereafter (Register 75, No.
36).
2. Amendment of subsection (k)(2) filed 6-23-77; effective
thirtieth day thereafter (Register 77, No. 26).
3. Amendment of
subsections (f) and (k), Figure 3030 F1, Figure 3030 F2, Figure 3030 F3A,
Figure 3030 F3B, Figure 3030 F3C, and Table 3030 F4 which were filed 9-5-75
(Register 75, No. 36), was approved by the Building Standards Commission
3-26-76. History note printed in Register 78, No. 30 for technical
reasons.
4. Repealer of subsections (f)(3)(A), (f)(3)(B), Table
3030 F4, (f)(4) and new subsections (f)(4), (f)(5) and (f)(6) filed 12-22-78;
effective thirtieth day thereafter (Register 79, No. 1).
5.
Editorial correction of subsection (b) and Table 3030 E1 (Register 95, No.
26).
6. Change without regulatory effect amending subsection (e)(1)
to provide more legible illustration in Figure 3030 E1 filed 5-1-2009 pursuant
to section 100, title 1, California Code of Regulations (Register 2009, No.
18).