JPH05311820A - Block for roof floor parapet - Google Patents

Abstract

PURPOSE:To carry out waterproofing execution at a rising spot between the outer wall member of a roof floor parapet and a roof slab. CONSTITUTION:A block 24 which has a L-shaped section formed of a floor member 18 and a wall member 19 mutually crossing at right angles and several stripes of ribs 21 formed on the outer face 35 of the wall member 19 so as to vertically continue on the floor member 18 is executed at a rising spot 17 between the outer wall member 11 of a roof floor parapet and a roof slab 13 by sticking the floor member 18 on the roof slab 13 and abutting the rib 21 of the wall member 19 on the outer wall member 11, and a waterproofing surface skin member 25 is laminated on the block 24. Since the wall member 19 is not wholly sticked on the outer wall member 11, and the rib 21 partially abutting on the outer wall member 11 of the wall member 19 performs buffer action, the vibration of the outer wall member 11 is not directly transmitted to the wall member 19, and the crack, caused by difference in vibration between the outer wall member 11 and the roof slab 13, of the waterproofing surface skin member 25 laminated on the rising spots (17,20) can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is constructed by abutting a peripheral edge 14 of a roof slab against an inner wall surface side 12 of an outer wall material which is vertically built, and projecting a top end 15 of the outer wall material onto a roof slab 13. The present invention relates to a waterproofing method for a rising portion 17 where an outer wall material 11 of a roof parapet and a roof slab 13 intersect.

[0002]

2. Description of the Related Art A rising portion 1 of a roof parapet of this kind
In FIG. 7, the outer wall material 11 is joined to an angle welded to the shaped steel beam 26 and other steel materials to be erected vertically. By the way, the vertical outer wall material 11 and the horizontal roof slab 13 are
The manner of vibration in an earthquake or the like is completely different depending on the difference in the supported direction. Also, the outer wall material 11 and the roof slab 1
In No. 3, the degree of expansion and contraction due to the temperature greatly differs depending on the difference in their materials and structures. Therefore, the roof slab 13
Even if the waterproof skin material 25 is laid and laminated after the gap between the peripheral edge 14 and the outer wall material 11 is closed with mortar, due to the difference in expansion and contraction variation of the outer wall material 11 and the roof slab 13 that are in close contact with each other,
The waterproof skin material 25 is apt to crack at the rising portion 17 which is a boundary between the portion in close contact with the outer wall material 11 and the portion in close contact with the roof slab 13, and rain leakage easily occurs.

In order to prevent the leakage of rain and to cover up the reinforcing material and the backup material for joining the outer wall material protruding to the inner wall surface side 12 of the outer wall material, a reinforcing bar is assembled on the peripheral edge 14 of the roof slab and concrete is poured. Then, the rising wall along the outer wall material 11 is superposed on the outer wall material 11 to be double-constructed, and the roof slab 13
The method of continuously applying the waterproof skin material 25 to the rising wall is adopted.

[0004]

However, it is useless to construct the rising wall on the outer wall material 11 protruding above the roof slab 13 and constituting the roof parapet. is there. In addition, in order to construct the rising wall, a series of work is required to assemble the reinforcing bars, attach the formwork, place concrete, cure for a certain period of time, and then remove the formwork. Since each is done by a different contractor, the construction period is delayed, the process is complicated, and management at the construction site is complicated.

Therefore, the object of the present invention is to waterproof the outer wall material 11 and the rising portion 17 of the roof slab 13 in a simple and reliable manner, and to finish the roof parapet without constructing double rising walls made of concrete or the like. To do.

[0006]

According to the present invention, (1)
The peripheral edge 14 of the roof slab 13 is abutted against the inner wall surface side 12 of the outer wall material 11 which is vertically raised, and the top end 1 of the outer wall material 11 is
In the rising portion 17 where the roof slab 13 and the outer wall material 11 of the roof parapet formed by protruding 5 on the roof slab 13 are (2) a flat foam plastic rectangular floor member 18 and a flat foam plastic rectangular Wall member 19
Are orthogonal to each other to form an L-shaped cross section,
The ribs 21 having a constant ridge height H extending in a ridge shape toward the ridgeline 36 where the outer surface 35 of the wall member 19 and the outer surface 35 of the wall member 19 are orthogonal to each other are provided at a required interval L in the lengthwise direction of the ridgeline 36 at the outer surface of the wall member 19. 35
The roof parapet block 24 formed in
(3) The floor member 18 is adhered to the roof slab 13, and the rib 21 on the back side of the wall member is abutted on the inner wall surface 12 of the outer wall material, and (4) the top end 15 of the outer wall material 11 is connected to the block 2
The roof parapet 16 is finished by laying and stacking the waterproof skin material 25 on the entire surface of the rising portion 17 continuing to the roof slab 13 through the wall member 19 and the floor member 18 of FIG.

The block 24 includes a floor member 18 and a wall member 19.
It is recommended to connect the hinges in a hinge shape and fold them at a right angle when using to assemble them into an L-shaped cross-section. By doing so, the floor member 18 and the wall member 19 can be easily transported and stored.
Can be flattened and stacked. Floor member 18
The wall member 19 is connected to the inner surface side of the block 24 (38.
39) or the outer surface side (34.
35) (FIG. 5, FIG. 6, FIG. 7). When connecting on the inner surface side (38, 39), as shown in FIGS. 3 and 4, when the block 24 is expanded, the groove 37 for partitioning the floor member 18 and the wall member 19 is formed on the outer surface side (34, 3).
5), the sum (α + β) of the inclination angle α between the outer surface 34 of the floor member and the groove wall surface 40 subsequent thereto and the inclination angle β between the outer surface 35 of the wall member and the groove wall surface 41 subsequent thereto (α + β) is 90.
To be On the contrary, the outer surface side (34.3
5), as shown in FIGS. 5, 6 and 7, in the expanded state of the block 24, the groove 37 for partitioning the floor member 18 and the wall member 19 has an inner surface (38.
9), the sum (α + β) of the inclination angle α between the inner surface 38 of the floor member and the groove wall surface 40 subsequent thereto and the inclination angle β between the inner surface 39 of the wall member and the groove wall surface 41 subsequent thereto becomes 90 °. To be Thus, the sum of the inclination angles α and β of the left and right groove wall surfaces 40 and 41 with respect to the floor member 18 and the wall member 19 (α
When + β) is set to 90 °, the block 24 having an L-shaped cross section in which the left and right groove wall surfaces 40 and 41 are in close contact with each other can be formed only by bending the floor member 18 and the wall member 19, and the block 24 can be easily assembled.

In order to make it difficult for the wall member 19 to fall down during construction, the floor member 18 and the wall member 19 are provided on the outer surface side (34/35).
And the groove 37 at the boundary between them is a V-shaped groove, the inclination angle α between the inner surface 38 of the floor member and the groove wall surface 40, and the inner surface 3 of the wall member.
The inclination angle β between the groove 9 and the groove wall surface 41 is approximately 45 °,
The sum of the inclination angles (α + β) may be set to be slightly larger than 90 °, and ridges 45 and 46 having a right-angled triangular cross-section are provided on the left and right of the V-shaped groove 37, and one groove wall surface 40 The ridges 47 each having a right-angled triangular cross-section are discretely attached in the length direction of the V-shaped groove 37, and the other groove wall surface 41 facing the ridge 47 is fitted into the ridges 47 when the floor member 18 and the wall member 19 are bent at a right angle. It is advisable to attach a recess 48 having an inverted right-angled triangular cross-section shape (FIGS. 5, 6, and 7).

In the block 24, expandable beads such as polypropylene, polyethylene or polystyrene are charged into a molding cavity in the shape of the block 24 while being heated by a bead method in-mold molding method.
It is preferable that the floor member 18 and the wall member 19 and the connecting portion 43 that connects them are integrally formed by expanding the foamed material up to 120 times and by the closed cell structure of the expanded beads. A preferred foamed plastic is foamed 15 to 45 times to form a closed cell structure, has a bulk density of 0.02 to 0.06 and a tensile strength of 2.4 to 4 according to JIS-K-6767 standard.
7.8 Kg / cm ² , tensile elongation 12 to 16%, tear strength 1.9 to 3.5 Kg / cm, compression hardness 0.8 to
2.5 Kg / cm ² , compression set of 7.6 to 8.5%,
Repeated permanent set is 7.5-9.6%, JIS-A
-1412 standard, 20 ℃ thermal conductivity is 0.033〜
0.35, the impact resilience according to JIS-K-6401 standard is 31-43%, and the water absorption rate according to JIS-K-6767 standard B method is 0.32-0.90 g / 100 cm.
³ is a polypropylene foam bead having a hardness of 37 to 62 degrees according to the Japan Rubber Association standard SRIS-0101, the floor member 18 has a thickness of 20 to 40 mm, and the entire thickness of the wall member 19 including the ribs 21 is The thickness (height H) of the rib 21 occupying the total thickness of the wall member 19 is set to be 1 to 6 so that it is 1.5 to 2.5 times the thickness of the floor member 18.
It is good to make a ratio.

The ribs 21 also reinforce the wall member 19, and it is preferable that the ribs 21 are orthogonal to the ridge line 36.
The width W of 2 is 0 to 50 mm, preferably 25 mm or less, and each rib 21a, 21b, 21c, 21d, 21
The total area of the tops 42 of the e · 21f is 20% or less, preferably 10% or less, of the total area of the outer surface 35 of the wall member. In order to reinforce the rising portion 17 of the block 24, several ribs 21a, 21b,
21c, 21d, 21e, 21f, between the ends on the ridge side (36), it is preferable to attach a raised ridge 20 protruding from the outer surface 35 of the wall member and continuing parallel to the ridge line 36. In that case, the raised ridge 20 is formed. The height h of the raised ridges 20 is set to be the height H of the ribs 21 in order to prevent the ribs from being substantially occupied in the total area of the outer surface 35 of the ribs 42.
Should not be higher than (h ≦ H). Further, in order to facilitate the block 24 to closely adhere to the outer wall material 11 and the roof slab 13, a ridge line portion where the outer surfaces 34 and 35 of the floor member 18 and the wall member 19 are orthogonal to each other is cut along the ridge line 36 so that the block is not angular. To

In constructing the block 24, the groove wall surfaces 40 and 41 are coated with a chloroprene synthetic rubber adhesive,
The floor member 18 and the wall member 19 are bent to assemble the block 24. Next, a mortar 49 is filled between the peripheral edge 14 of the roof slab 13 and the outer wall material 11 to close the gap, and a primer and a chloroprene-based synthetic rubber adhesive 50 are applied to the periphery of the roof slab 13 and simultaneously applied to the outer surface 34 of the floor member. Also, a chloroprene-based synthetic rubber adhesive is applied, and after the open time of 30 to 60 minutes, the floor member 18 is bonded to the roof slab 13 while the wall member 19 is pressure-bonded to the outer wall member 11. Then
When the wall member 19 projects higher than the top end 15 of the outer wall material 11, the projecting portion is cut off with a cutter knife, and a heat insulating plate 51 is laid on the entire surface of the roof slab 13 continuing from the block 24 to level it. Adhesive tape 52 is attached to the bonding points (40 and 41) of the V groove 37, the joints between the blocks 24 and 24, the joints between the block 24 and the heat insulating plate 51 to close the gap, and heat is insulated from the top end 15 of the outer wall material 11. Board 51
The waterproof skin material 25 is laid and laminated on the entire surface up to and the roof end parapet 16 is finished by covering the top end 15 with the head tree 53. still,
When the rib 21 of the wall member 19 is bonded to the outer wall material 11,
It should be lightly bonded to the extent of temporary fixing.

[0012]

The block 24 constructed in this way is
A flat foam plastic rectangular floor member 18 and a flat foam plastic rectangular wall member 19 have an L-shaped cross-section orthogonal to each other, and an outer surface 34 of the floor member 18 and an outer surface 35 of the wall member 19 are perpendicular to a ridge line 36. The ribs 21 having a constant raised height H continuing in a ridge shape are formed on the outer surface 35 of the wall member 19 at a required interval L in the length direction of the ridge line 36, and contact the outer wall material 11 thereof. The interval L between the ribs 21 in contact with each other is larger than the width W of the rib 21, and the area ratio of the rib 21 to the entire wall member 19 is small. Therefore, when the roof slab 13 and the outer wall material 11 vibrate in different directions such that the roof slab 13 vibrates in the horizontal direction and the outer wall material 11 vibrates in the vertical direction, the block 24 and the bonded roof slab 13 are different from each other. Although it vibrates as a unit, since the rib 21 and the outer wall member 11 are slidably installed, the block 24 does not vibrate integrally with the outer wall member 11, and the vibration of the outer wall member 11 does not occur. Even if it is transmitted to the block 24, the vibrations are divided and absorbed by the fine bubbles of the foamed plastic, and since the block 24 is made of the foamed plastic having the cushioning property, it is unlikely to crack itself. Therefore, the rising portion (1 where the floor member 18 and the wall member 19 intersect)
Cracks in 7) are avoided.

The ribs 21 protruding toward the outer surface of the wall member 19 serve as a cushioning material that slides on the outer wall material 11 and does not transmit the vibration of the outer wall material 11 to the floor member 18.
Therefore, the distance L between the ribs 21 is made larger than the width W, the width W of the top portion 42 is set to 0 to 50 mm, preferably 25 mm or less, and each rib 21a, 21b, 21c, 21d.
The total area of the tops 42 of 21e and 21f is 20% or less, preferably 10% or less of the total area of the outer surface 35 of the wall member, and the contact area between the wall member 19 and the outer wall member 11 is reduced. It is effective, and therefore, when it is necessary to bond the rib 21 of the wall member 19 to the outer wall material 11 during the construction process, the rib 21 should be lightly bonded to the extent of temporary fixing.

As described above, a plurality of ribs 21 project from the outer surface of the wall member that abuts the outer wall member 11, and the entire surface of the wall member 19 does not abut the inner wall surface 12 of the outer wall member, but only a portion of the ribs. Since only the top portion 42 of the outer wall member 21 abuts on the inner wall surface 12 of the outer wall member, even if the reinforcing member 54 and the backup member necessary for constructing the outer wall member 11 are exposed on the surface of the outer wall member 12, the outer wall member 19 is covered with the outer member. It is accommodated in a gap 32 formed between the inner wall surface 12 of the outer wall material 11 and the inner wall surface 12 of the outer wall material 11, and the entire surface of the inner wall surface 12 of the outer wall material 11 is covered with the block 24 to be finished neatly. In that case, in particular, the outer surface 34 of the floor member 18 and the wall member 19
In the block 24 having a non-angular shape in which the ridge portion where 35 is orthogonal to each other is cut along the ridge line 36, the ridge portion is closely attached to both the outer wall material 11 and the roof slab 13 to facilitate construction. With the block 24 in which the floor member 18 and the wall member 19 are flexibly connected to each other in a hinge shape, the floor member 18 and the wall member 19 can be bent at a right angle to be assembled into an L-shaped cross-section during use, and are flat during transportation and storage. Easy to handle as it can be deployed and stacked.

In particular, the floor member 18 and the wall member 19 are connected on the outer surface side (34, 35), and in the expanded state, the floor member 18 and the wall member 19 are partitioned by the inner surface side (38, 39) between them. The V-shaped groove 37 is formed, and the inclination angle α of the groove wall surface 40 of the V-shaped groove 37 on the side following the floor member 18 with respect to the inner surface 38 of the floor member 18 and the wall member of the V-shaped groove 37 relative to the inner surface 39 of the wall member 19. In the block 24 in which the sum (α + β) of the inclination angle β of the groove wall surface 41 on the side following 19 is set to about 90 °, the floor member 18 and the wall member 19 are simply bent and the left and right groove wall surfaces 40 and 41 are brought into close contact with each other. Since it is assembled to the block 24 having an L-shaped cross section, the assembly is easy and the handling is easy.

Then, ridges 45 and 46 having a right-angled triangular cross-section are attached to the left and right of the V-shaped groove 37, and further, one groove wall surface 40.
The ridges 47 each having a right-angled triangular cross-section are discretely attached in the lengthwise direction of the V-shaped groove 37, and the groove wall surfaces 41 are fitted with the ridges 47 when the floor member 18 and the wall member 19 are bent at a right angle. In the case where the recess 48 having an inverted right triangle cross section is provided, the rising portion between the assembled floor member 18 and wall member 19 is fitted with the ridge 47 and the recess 48, and the left and right groove wall surfaces 40 of the V-shaped groove 37. Since the 41 is reinforced by the left and right ridges 45 and 46 which are closely attached to each other, the block 24 having excellent durability in which the wall member 19 does not easily fall toward the floor member 18
Will be assembled into.

In the block 24 made of expanded polypropylene, expanded polyethylene or expanded polystyrene, the expandable beads of polypropylene, polyethylene or polystyrene are charged into a molding cavity imitating the block 24 while being heated, and the foaming beads are molded in the molding cavity 10 It can be obtained at a low cost by a bead method in-molding method in which the floor member 18, the wall member 19, and the connecting portion 43 are integrally molded by foaming up to 120 times, and the shape is stable and practical.

Particularly, the foamed plastic has a closed-cell structure in which it is foamed 15 to 45 times, and JIS-K-67 is used.
67 standard has a bulk density of 0.02 to 0.06, a tensile strength of 2.4 to 7.8 Kg / cm ² , and a tensile elongation of 12 to 16.
%, Tear strength 1.9 to 3.5 Kg / cm, compression hardness 0.8 to 2.5 Kg / cm ² , compression set 7.6 to.
8.5%, the repeated permanent set is 7.5-9.6%,
The thermal conductivity at 20 ° C. according to JIS-A-1412 standard is 0.
033-0.35, the impact resilience according to JIS-K-6401 standard is 31-43%, JIS-K-67
67 standard B method has a water absorption of 0.32 to 0.90 g / 1
It is 00 cm ³ , and the Japan Rubber Association standard SRIS-010
1. The polypropylene foam beads having a hardness of 37 to 62 degrees according to No. 1 are used, the thickness of the floor member 18 is set to 20 to 40 mm, and the entire thickness including the rib 21 of the wall member 19 is set to the floor member 1.
The thickness of the rib 21 (height H) occupying the entire thickness of the wall member 19 so as to be 1.5 to 2.5 times the thickness of 8
10 to 60%, the shape is stable, the wall member 19 does not easily fall down, and is vertically supported by the floor member 18, which is excellent in chemical resistance and weather resistance and can be deformed even when walking on the floor member 18. Instead, the durable roof parapet 16 can be simply finished simply by laying and laminating the waterproof skin material 25 thereon.

Thus, according to the present invention, not only the rising wall of concrete which has been conventionally used for waterproof construction is unnecessary but it is not only economical, but also waterproof construction by a single contractor is possible and the construction period is also increased. The rooftop parapet is shortened, the management of the construction site is rationalized, and the durable roof parapet is beautifully finished. Therefore, the block according to the present invention is extremely practical.

[Brief description of drawings]

FIG. 1 is a sectional perspective view of a roof parapet according to the present invention.

FIG. 2 is a perspective view of a roof parapet block according to the present invention.

FIG. 3 is a perspective view of a roof parapet block according to the present invention.

FIG. 4 is a perspective view of a roof parapet block according to the present invention.

FIG. 5 is a perspective view of a roof parapet block according to the present invention.

FIG. 6 is a perspective view of a roof parapet block according to the present invention.

FIG. 7 is a perspective view of a roof parapet block according to the present invention.

FIG. 8 is a perspective view of the roof parapet showing a process of constructing the roof parapet block according to the present invention.

[Explanation of symbols] [Explanation of symbols]

 11 Outer wall material 12 Inner wall surface 13 Roof slab 14 Perimeter 15 Top edge 16 Rooftop 17 Rise point 18 Floor member 19 Wall member 20 Raised ridge 21 Rib 24 Block 25 Waterproof skin material 26 Shaped steel beam 32 Gap 34 Outer surface 35 Outer surface 36 Ridge line 37 V Shaped groove 38 Inner surface 39 Inner surface 40 Groove wall surface 41 Groove wall surface 42 Top portion 43 Connecting portion 45 Ridge 46 Ridge 47 Ridge 48 Dimple 49 Mortar 50 Adhesive 51 Heat insulating plate 52 Adhesive tape 53 Kasaki 54 Reinforcement material

Claims (6)

[Claims] 1. A flat-plate foam plastic rectangular floor member 18 and a flat-plate foam plastic rectangular wall member 19 have an L-shaped cross section orthogonal to each other, and (b) the outer surface 34 of the floor member 18 and the wall member. The ribs 21 having a constant ridge height H that continue in a ridge shape toward the ridgeline 36 where the outer surface 35 of the ridgeline 3 crosses the ridgeline 3
6. The roof parapet block, which is formed on the outer surface 35 of the wall member 19 at a required distance L in the length direction of 6. 2. A flat-plate foam plastic rectangular floor member 18 and a flat-plate foam plastic rectangular wall member 19 have an L-shaped cross section orthogonal to each other, and (b) the outer surface 34 of the floor member 18 and the wall member. The ribs 21 having a constant ridge height H that continue in a ridge shape toward the ridgeline 36 where the outer surface 35 of the ridgeline 3 crosses the ridgeline 3
6 is formed on the outer surface 35 of the wall member 19 at a required distance L in the length direction of (6), (c) the width W of the top portion 42 of the rib 21 is 0 to 50 mm, and the outer surface 35 of the wall member is Several ribs 21a, 21b, 21c, 21d protruding from the
The total area of the tops 42 of 21e and 21f is 20% or less of the total area of the outer surface 35 of the wall member, and (d) several ribs 21a, 21b, 21 protruding from the outer surface 35 of the wall member.
c, 21d, 21e, and 21f are orthogonal to the ridge line 36, and (e) the ridge line portion where the floor member 18 of the block 24 having an L-shaped cross section and the outer surfaces 34 and 35 of the wall members 19 are orthogonal to each other is angular. And not in the form of being cut off along the ridge 36, (f) floor member 18 and wall member 1
9, and the connecting portion 43 that connects the floor member 18 and the wall member 19 are integrally formed by expanded beads having a closed-cell structure, such as polypropylene, polyethylene, or polystyrene, which are expanded 10 to 120 times by a bead method in-molding method. A roof parapet block characterized by being molded. 3. (a) A flat foam plastic rectangular floor member 18 and a flat foam plastic rectangular wall member 19, which are flexibly connected to each other in a hinge shape, have an L-shaped cross-sectional shape orthogonal to each other. ) The ribs 21 having a constant ridge height H continuing in a ridge shape toward the ridge line 36 where the outer surface 34 of the floor member 18 and the outer surface 35 of the wall member 19 are orthogonal to each other have a required interval L in the length direction of the ridge line 36. The roof parapet block is characterized in that it is formed on the outer surface 35 of the wall member 19. 4. (a) A flat foam plastic rectangular floor member 18 and a flat foam plastic rectangular wall member 19, which are flexibly connected to each other in a hinge shape, have an L-shaped cross-sectional shape orthogonal to each other. ) The ribs 21 having a constant ridge height H continuing in a ridge shape toward the ridge line 36 where the outer surface 34 of the floor member 18 and the outer surface 35 of the wall member 19 are orthogonal to each other have a required interval L in the length direction of the ridge line 36. And is formed on the outer surface 35 of the wall member 19, and (c) the width W of the top portion 42 of the rib 21 is 0 to 50 m.
m and several ribs 2 protruding from the outer surface 35 of the wall member
The total area of the tops 42 of 1a, 21b, 21c, 21d, 21e, and 21f is 20% or less of the total area of the outer surface 35 of the wall member, and (d) several ribs protruding from the outer surface 35 of the wall member. 21a ・ 21b ・ 21c ・ 21d ・ 21e ・ 2
1f is orthogonal to the ridge line 36, (e) the ridge line portion where the floor member 18 of the block 24 having an L-shaped cross section and the outer surfaces 34 and 35 of the wall member 19 are orthogonal to each other is not angular, and the ridge line 36 Be cut along the
(F) Floor member 18, wall member 19, and floor member 18
The connecting portion 43 connecting the wall member 19 and the wall member 19 is integrally formed of expanded beads having a closed cell structure, such as polypropylene, polyethylene, or polystyrene, which are expanded 10 to 120 times by a bead method in-mold molding method. , A rooftop parapet block featuring. 5. (a) A flat foam plastic rectangular floor member 18 and a flat foam plastic rectangular wall member 19, which are flexibly connected to each other in a hinge shape, have an L-shaped cross-sectional shape orthogonal to each other. ) A plurality of ribs 21 having a constant ridge height H, which continue in a ridge shape toward the ridgeline 36 where the outer surface 34 of the floor member 18 and the outer surface 35 of the wall member 19 are orthogonal to each other, are arranged at required intervals in the lengthwise direction of the ridgeline 36. L is formed on the outer surface 35 of the wall member 19, (c) The floor member 18 and the wall member 19 are connected at the outer surface side (34/35), (d)
Inner surface side of the floor member 18 and the wall member 19 (38, 39) in a state where the floor member 18 and the wall member 19 are flatly developed.
A V-shaped groove 37 for partitioning the floor member 18 and the wall member 19 is formed in (3), and (e) the inclination angle α of the groove wall surface 40 of the V-shaped groove 37 with respect to the inner surface 38 of the floor member 18 following the floor member 18.
And the inclination angle β of the groove wall surface 41 of the V-shaped groove 37 following the wall member 19 with respect to the inner surface 39 of the wall member 19 (α + β) is 9
A roof parapet block characterized by being at 0 °. 6. (a) A flat foam plastic rectangular floor member 18 and a flat foam plastic rectangular wall member 19, which are flexibly connected to each other in a hinge shape, have an L-shaped cross-sectional shape orthogonal to each other. ) A plurality of ribs 21 having a constant ridge height H, which continue in a ridge shape toward the ridgeline 36 where the outer surface 34 of the floor member 18 and the outer surface 35 of the wall member 19 are orthogonal to each other, are arranged at required intervals in the lengthwise direction of the ridgeline 36. L is formed on the outer surface 35 of the wall member 19, (c) The floor member 18 and the wall member 19 are connected at the outer surface side (34/35), (d)
Inner surface side of the floor member 18 and the wall member 19 (38, 39) in a state where the floor member 18 and the wall member 19 are flatly developed.
A V-shaped groove 37 for partitioning the floor member 18 and the wall member 19 is formed in (3), and (e) the inclination angle α of the groove wall surface 40 of the V-shaped groove 37 with respect to the inner surface 38 of the floor member 18 following the floor member 18.
And the inclination angle β of the groove wall surface 41 of the V-shaped groove 37 following the wall member 19 with respect to the inner surface 39 of the wall member 19 (α + β) is 9
(F) The width W of the top portion 42 of the rib 21 is 0 to 50 mm, and the ribs 21a, 21b, 21c, 21d, 21 are projected from the outer surface 35 of the wall member.
The total area of the top portion 42 of e · 21f is 20% or less of the total area of the outer surface 35 of the wall member, (g) the outer surface 3 of the wall member
5 ribs 21a, 21b, 21c, 2 protruding from 5
1d · 21e · 21f are orthogonal to the ridgeline 36, and (h) the ridgeline portion where the floor member 18 of the block 24 having an L-shaped cross section and the outer surface 34/35 of the wall member 19 are orthogonal is formed. First, it is cut along the ridge line 36, and (i) the floor member 18 and the wall member 19, and the connecting portion 4 connecting the floor member 18 and the wall member 19.
The roof parapet block 3 is integrally molded with expanded beads having a closed cell structure, such as polypropylene, polyethylene, and polystyrene, which are foamed 10 to 120 times by a bead method in-mold molding method.